From c599914304b262067c19b2968ab50826b4d9bcd3 Mon Sep 17 00:00:00 2001 From: Justin Santa Barbara Date: Fri, 30 Jul 2010 12:54:03 -0700 Subject: Removed duplicate toXml method --- nova/virt/libvirt_conn.py | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 43b5eded2..6bc5ebf89 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -228,20 +228,6 @@ class LibvirtConnection(object): return os.path.abspath(os.path.join(instance.datamodel['basepath'], path)) - def toXml(self, instance): - # TODO(termie): cache? - logging.debug("Starting the toXML method") - libvirt_xml = open(FLAGS.libvirt_xml_template).read() - xml_info = instance.datamodel.copy() - # TODO(joshua): Make this xml express the attached disks as well - - # TODO(termie): lazy lazy hack because xml is annoying - xml_info['nova'] = json.dumps(instance.datamodel.copy()) - libvirt_xml = libvirt_xml % xml_info - logging.debug("Finished the toXML method") - - return libvirt_xml - def toXml(self): # TODO(termie): cache? logging.debug("Starting the toXML method") -- cgit From 7985f5fb32432630b3fef775f601900f89346ed2 Mon Sep 17 00:00:00 2001 From: Justin Santa Barbara Date: Fri, 30 Jul 2010 13:35:21 -0700 Subject: Accept a configurable libvirt_uri --- nova/virt/libvirt_conn.py | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 6bc5ebf89..8d473296a 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -49,6 +49,9 @@ FLAGS = flags.FLAGS flags.DEFINE_string('libvirt_xml_template', utils.abspath('compute/libvirt.xml.template'), 'Libvirt XML Template') +flags.DEFINE_string('libvirt_uri', + 'qemu:///system', + 'Libvirt URI to connect to') def get_connection(read_only): # These are loaded late so that there's no need to install these @@ -67,10 +70,11 @@ class LibvirtConnection(object): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_NOECHOPROMPT], 'root', None] + libvirt_uri = str(FLAGS.libvirt_uri) if read_only: - self._conn = libvirt.openReadOnly('qemu:///system') + self._conn = libvirt.openReadOnly(libvirt_uri) else: - self._conn = libvirt.openAuth('qemu:///system', auth, 0) + self._conn = libvirt.openAuth(libvirt_uri, auth, 0) def list_instances(self): -- cgit From 6c32e87c1be80230cf058586cee5a94cd25670b8 Mon Sep 17 00:00:00 2001 From: Justin Santa Barbara Date: Sat, 31 Jul 2010 21:35:58 -0700 Subject: Fixed up some of the raw disk stuff that broke in the abstraction out of libvirt --- nova/virt/libvirt_conn.py | 48 ++++++++++++++++++++++++++++++++++------------- 1 file changed, 35 insertions(+), 13 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 8d473296a..d18158678 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -195,32 +195,54 @@ class LibvirtConnection(object): user = manager.AuthManager().get_user(data['user_id']) if not os.path.exists(basepath('disk')): yield images.fetch(data['image_id'], basepath('disk-raw'), user) - if not os.path.exists(basepath('kernel')): - yield images.fetch(data['kernel_id'], basepath('kernel'), user) - if not os.path.exists(basepath('ramdisk')): - yield images.fetch(data['ramdisk_id'], basepath('ramdisk'), user) + + using_kernel = data['kernel_id'] and True + + if using_kernel: + if not os.path.exists(basepath('kernel')): + yield images.fetch(data['kernel_id'], basepath('kernel'), user) + if not os.path.exists(basepath('ramdisk')): + yield images.fetch(data['ramdisk_id'], basepath('ramdisk'), user) execute = lambda cmd, input=None: \ process.simple_execute(cmd=cmd, input=input, error_ok=1) + # For now, we assume that if we're not using a kernel, we're using a partitioned disk image + # where the target partition is the first partition + target_partition = None + if not using_kernel: + target_partition = "1" + key = data['key_data'] net = None if FLAGS.simple_network: - with open(FLAGS.simple_network_template) as f: - net = f.read() % {'address': data['private_dns_name'], + network_info = {'address': data['private_dns_name'], 'network': FLAGS.simple_network_network, 'netmask': FLAGS.simple_network_netmask, 'gateway': FLAGS.simple_network_gateway, 'broadcast': FLAGS.simple_network_broadcast, 'dns': FLAGS.simple_network_dns} - if key or net: + + with open(FLAGS.simple_network_template) as f: + net = f.read() % network_info + + with open(FLAGS.simple_network_dns_template) as f: + dns = str(Template(f.read(), searchList=[ network_info ] )) + + + if key or net or dns: logging.info('Injecting data into image %s', data['image_id']) - yield disk.inject_data(basepath('disk-raw'), key, net, execute=execute) + try: + yield disk.inject_data(basepath('disk-raw'), key=key, net=net, dns=dns, remove_network_udev=True, partition=target_partition, execute=execute) + except Exception as e: + # This could be a windows image, or a vmdk format disk + logging.warn('Could not inject data; ignoring. (%s)' % e) - if os.path.exists(basepath('disk')): - yield process.simple_execute('rm -f %s' % basepath('disk')) + if using_kernel: + if os.path.exists(basepath('disk')): + yield process.simple_execute('rm -f %s' % basepath('disk')) bytes = (instance_types.INSTANCE_TYPES[data['instance_type']]['local_gb'] * 1024 * 1024 * 1024) @@ -232,15 +254,15 @@ class LibvirtConnection(object): return os.path.abspath(os.path.join(instance.datamodel['basepath'], path)) - def toXml(self): + def toXml(self, instance): # TODO(termie): cache? logging.debug("Starting the toXML method") template_contents = open(FLAGS.libvirt_xml_template).read() - xml_info = self.datamodel.copy() + xml_info = instance.datamodel.copy() # TODO(joshua): Make this xml express the attached disks as well # TODO(termie): lazy lazy hack because xml is annoying - xml_info['nova'] = json.dumps(self.datamodel.copy()) + xml_info['nova'] = json.dumps(instance.datamodel.copy()) if xml_info['kernel_id']: xml_info['kernel'] = xml_info['basepath'] + "/kernel" -- cgit From 9732c0af89f21490cc8d6bc80799bbc8b36fb441 Mon Sep 17 00:00:00 2001 From: Justin Santa Barbara Date: Thu, 14 Oct 2010 13:38:35 -0700 Subject: Minimized diff, fixed formatting --- nova/virt/libvirt.uml.xml.template | 2 +- nova/virt/libvirt.xen.xml.template | 2 +- nova/virt/libvirt_conn.py | 2 ++ 3 files changed, 4 insertions(+), 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt.uml.xml.template b/nova/virt/libvirt.uml.xml.template index f6e5fad69..da9588049 100644 --- a/nova/virt/libvirt.uml.xml.template +++ b/nova/virt/libvirt.uml.xml.template @@ -12,7 +12,7 @@ - + diff --git a/nova/virt/libvirt.xen.xml.template b/nova/virt/libvirt.xen.xml.template index 9508ad3b7..8f650e512 100644 --- a/nova/virt/libvirt.xen.xml.template +++ b/nova/virt/libvirt.xen.xml.template @@ -23,7 +23,7 @@ - + diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index ba5d6dbac..ece98087b 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -72,6 +72,7 @@ flags.DEFINE_bool('allow_project_net_traffic', True, 'Whether to allow in project network traffic') + def get_connection(read_only): # These are loaded late so that there's no need to install these # libraries when not using libvirt. @@ -126,6 +127,7 @@ class LibvirtConnection(object): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_NOECHOPROMPT], 'root', None] + if read_only: return libvirt.openReadOnly(uri) else: -- cgit From f8028c0a4cd1c3cfb8a9c6b4c397fd67ce912cce Mon Sep 17 00:00:00 2001 From: Justin Santa Barbara Date: Thu, 14 Oct 2010 13:48:34 -0700 Subject: Removed stray spaces that were causing an unnecessary diff line --- nova/virt/libvirt_conn.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index ece98087b..68791c28a 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -127,7 +127,7 @@ class LibvirtConnection(object): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_NOECHOPROMPT], 'root', None] - + if read_only: return libvirt.openReadOnly(uri) else: -- cgit From 98623a160078dfed7347dcd1539b0cd27e51644a Mon Sep 17 00:00:00 2001 From: Justin Santa Barbara Date: Fri, 15 Oct 2010 11:06:16 -0700 Subject: Removed 'and True' oddity --- nova/virt/libvirt_conn.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 68791c28a..d78a8f0db 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -324,7 +324,7 @@ class LibvirtConnection(object): if not os.path.exists(basepath('disk')): yield images.fetch(inst.image_id, basepath('disk-raw'), user, project) - using_kernel = inst.kernel_id and True + using_kernel = inst.kernel_id if using_kernel: if not os.path.exists(basepath('kernel')): yield images.fetch(inst.kernel_id, basepath('kernel'), user, project) -- cgit From 2337fab0979b72bbc7e7730e94518a0e835a2751 Mon Sep 17 00:00:00 2001 From: Andy Smith Date: Mon, 25 Oct 2010 03:45:19 +0900 Subject: part way through porting the codebase off of twisted this provides a very basic eventlet-based service replacement for the twistd-based services, a replacement for task.LoopingCall also adds nova-combined with the goal of running a single service when doing local testing and dev --- nova/virt/fake.py | 6 +- nova/virt/libvirt_conn.py | 172 ++++++++++++++++++++++------------------------ nova/virt/xenapi.py | 103 ++++++++++++--------------- 3 files changed, 127 insertions(+), 154 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/fake.py b/nova/virt/fake.py index eaa2261f5..0684a0877 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -24,8 +24,6 @@ This module also documents the semantics of real hypervisor connections. import logging -from twisted.internet import defer - from nova.compute import power_state @@ -105,7 +103,6 @@ class FakeConnection(object): fake_instance = FakeInstance() self.instances[instance.name] = fake_instance fake_instance._state = power_state.RUNNING - return defer.succeed(None) def reboot(self, instance): """ @@ -117,7 +114,7 @@ class FakeConnection(object): The work will be done asynchronously. This function returns a Deferred that allows the caller to detect when it is complete. """ - return defer.succeed(None) + pass def destroy(self, instance): """ @@ -130,7 +127,6 @@ class FakeConnection(object): Deferred that allows the caller to detect when it is complete. """ del self.instances[instance.name] - return defer.succeed(None) def attach_volume(self, instance_name, device_path, mountpoint): """Attach the disk at device_path to the instance at mountpoint""" diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 509ed97a0..9ca97bd1b 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -25,10 +25,10 @@ import logging import os import shutil +from eventlet import event +from eventlet import tpool + import IPy -from twisted.internet import defer -from twisted.internet import task -from twisted.internet import threads from nova import context from nova import db @@ -145,13 +145,12 @@ class LibvirtConnection(object): except Exception as _err: pass # If the instance is already terminated, we're still happy - d = defer.Deferred() - d.addCallback(lambda _: self._cleanup(instance)) - # FIXME: What does this comment mean? - # TODO(termie): short-circuit me for tests - # WE'LL save this for when we do shutdown, + + done = event.Event() + + # We'll save this for when we do shutdown, # instead of destroy - but destroy returns immediately - timer = task.LoopingCall(f=None) + timer = utils.LoopingCall(f=None) def _wait_for_shutdown(): try: @@ -160,17 +159,26 @@ class LibvirtConnection(object): instance['id'], state) if state == power_state.SHUTDOWN: timer.stop() - d.callback(None) except Exception: db.instance_set_state(context.get_admin_context(), instance['id'], power_state.SHUTDOWN) timer.stop() - d.callback(None) timer.f = _wait_for_shutdown - timer.start(interval=0.5, now=True) - return d + timer_done = timer.start(interval=0.5, now=True) + + # NOTE(termie): this is strictly superfluous (we could put the + # cleanup code in the timer), but this emulates the + # previous model so I am keeping it around until + # everything has been vetted a bit + def _wait_for_timer(): + timer_done.wait() + self._cleanup(instance) + done.send() + + greenthread.spawn(_wait_for_time) + return done def _cleanup(self, instance): target = os.path.join(FLAGS.instances_path, instance['name']) @@ -179,32 +187,28 @@ class LibvirtConnection(object): if os.path.exists(target): shutil.rmtree(target) - @defer.inlineCallbacks @exception.wrap_exception def attach_volume(self, instance_name, device_path, mountpoint): - yield process.simple_execute("sudo virsh attach-disk %s %s %s" % - (instance_name, - device_path, - mountpoint.rpartition('/dev/')[2])) + process.simple_execute("sudo virsh attach-disk %s %s %s" % + (instance_name, + device_path, + mountpoint.rpartition('/dev/')[2])) - @defer.inlineCallbacks @exception.wrap_exception def detach_volume(self, instance_name, mountpoint): # NOTE(vish): despite the documentation, virsh detach-disk just # wants the device name without the leading /dev/ - yield process.simple_execute("sudo virsh detach-disk %s %s" % - (instance_name, - mountpoint.rpartition('/dev/')[2])) + process.simple_execute("sudo virsh detach-disk %s %s" % + (instance_name, + mountpoint.rpartition('/dev/')[2])) - @defer.inlineCallbacks @exception.wrap_exception def reboot(self, instance): xml = self.to_xml(instance) - yield self._conn.lookupByName(instance['name']).destroy() - yield self._conn.createXML(xml, 0) + self._conn.lookupByName(instance['name']).destroy() + self._conn.createXML(xml, 0) - d = defer.Deferred() - timer = task.LoopingCall(f=None) + timer = utils.LoopingCall(f=None) def _wait_for_reboot(): try: @@ -214,20 +218,16 @@ class LibvirtConnection(object): if state == power_state.RUNNING: logging.debug('instance %s: rebooted', instance['name']) timer.stop() - d.callback(None) except Exception, exn: logging.error('_wait_for_reboot failed: %s', exn) db.instance_set_state(context.get_admin_context(), instance['id'], power_state.SHUTDOWN) timer.stop() - d.callback(None) timer.f = _wait_for_reboot - timer.start(interval=0.5, now=True) - yield d + return timer.start(interval=0.5, now=True) - @defer.inlineCallbacks @exception.wrap_exception def spawn(self, instance): xml = self.to_xml(instance) @@ -235,16 +235,12 @@ class LibvirtConnection(object): instance['id'], power_state.NOSTATE, 'launching') - yield NWFilterFirewall(self._conn).\ - setup_nwfilters_for_instance(instance) - yield self._create_image(instance, xml) - yield self._conn.createXML(xml, 0) - # TODO(termie): this should actually register - # a callback to check for successful boot + NWFilterFirewall(self._conn).setup_nwfilters_for_instance(instance) + self._create_image(instance, xml) + self._conn.createXML(xml, 0) logging.debug("instance %s: is running", instance['name']) - local_d = defer.Deferred() - timer = task.LoopingCall(f=None) + timer = utils.LoopingCall(f=None) def _wait_for_boot(): try: @@ -254,7 +250,6 @@ class LibvirtConnection(object): if state == power_state.RUNNING: logging.debug('instance %s: booted', instance['name']) timer.stop() - local_d.callback(None) except: logging.exception('instance %s: failed to boot', instance['name']) @@ -262,10 +257,9 @@ class LibvirtConnection(object): instance['id'], power_state.SHUTDOWN) timer.stop() - local_d.callback(None) + timer.f = _wait_for_boot - timer.start(interval=0.5, now=True) - yield local_d + return timer.start(interval=0.5, now=True) def _flush_xen_console(self, virsh_output): logging.info('virsh said: %r' % (virsh_output,)) @@ -273,10 +267,9 @@ class LibvirtConnection(object): if virsh_output.startswith('/dev/'): logging.info('cool, it\'s a device') - d = process.simple_execute("sudo dd if=%s iflag=nonblock" % + r = process.simple_execute("sudo dd if=%s iflag=nonblock" % virsh_output, check_exit_code=False) - d.addCallback(lambda r: r[0]) - return d + return r[0] else: return '' @@ -296,21 +289,21 @@ class LibvirtConnection(object): def get_console_output(self, instance): console_log = os.path.join(FLAGS.instances_path, instance['name'], 'console.log') - d = process.simple_execute('sudo chown %d %s' % (os.getuid(), - console_log)) + + process.simple_execute('sudo chown %d %s' % (os.getuid(), + console_log)) + if FLAGS.libvirt_type == 'xen': - # Xen is spethial - d.addCallback(lambda _: - process.simple_execute("virsh ttyconsole %s" % - instance['name'])) - d.addCallback(self._flush_xen_console) - d.addCallback(self._append_to_file, console_log) + # Xen is special + virsh_output = process.simple_execute("virsh ttyconsole %s" % + instance['name']) + data = self._flush_xen_console(virsh_output) + fpath = self._append_to_file(data, console_log) else: - d.addCallback(lambda _: defer.succeed(console_log)) - d.addCallback(self._dump_file) - return d + fpath = console_log + + return self._dump_file(fpath) - @defer.inlineCallbacks def _create_image(self, inst, libvirt_xml): # syntactic nicety basepath = lambda fname='': os.path.join(FLAGS.instances_path, @@ -318,8 +311,8 @@ class LibvirtConnection(object): fname) # ensure directories exist and are writable - yield process.simple_execute('mkdir -p %s' % basepath()) - yield process.simple_execute('chmod 0777 %s' % basepath()) + process.simple_execute('mkdir -p %s' % basepath()) + process.simple_execute('chmod 0777 %s' % basepath()) # TODO(termie): these are blocking calls, it would be great # if they weren't. @@ -335,19 +328,19 @@ class LibvirtConnection(object): project = manager.AuthManager().get_project(inst['project_id']) if not os.path.exists(basepath('disk')): - yield images.fetch(inst.image_id, basepath('disk-raw'), user, - project) + images.fetch(inst.image_id, basepath('disk-raw'), user, + project) if not os.path.exists(basepath('kernel')): - yield images.fetch(inst.kernel_id, basepath('kernel'), user, - project) + images.fetch(inst.kernel_id, basepath('kernel'), user, + project) if not os.path.exists(basepath('ramdisk')): - yield images.fetch(inst.ramdisk_id, basepath('ramdisk'), user, - project) - - execute = lambda cmd, process_input=None, check_exit_code=True: \ - process.simple_execute(cmd=cmd, - process_input=process_input, - check_exit_code=check_exit_code) + images.fetch(inst.ramdisk_id, basepath('ramdisk'), user, + project) + + def execute(cmd, process_input=None, check_exit_code=True): + return process.simple_execute(cmd=cmd, + process_input=process_input, + check_exit_code=check_exit_code) key = str(inst['key_data']) net = None @@ -369,23 +362,23 @@ class LibvirtConnection(object): if net: logging.info('instance %s: injecting net into image %s', inst['name'], inst.image_id) - yield disk.inject_data(basepath('disk-raw'), key, net, - execute=execute) + disk.inject_data(basepath('disk-raw'), key, net, + execute=execute) if os.path.exists(basepath('disk')): - yield process.simple_execute('rm -f %s' % basepath('disk')) + process.simple_execute('rm -f %s' % basepath('disk')) local_bytes = (instance_types.INSTANCE_TYPES[inst.instance_type] ['local_gb'] * 1024 * 1024 * 1024) resize = inst['instance_type'] != 'm1.tiny' - yield disk.partition(basepath('disk-raw'), basepath('disk'), - local_bytes, resize, execute=execute) + disk.partition(basepath('disk-raw'), basepath('disk'), + local_bytes, resize, execute=execute) if FLAGS.libvirt_type == 'uml': - yield process.simple_execute('sudo chown root %s' % - basepath('disk')) + process.simple_execute('sudo chown root %s' % + basepath('disk')) def to_xml(self, instance): # TODO(termie): cache? @@ -637,15 +630,15 @@ class NWFilterFirewall(object): def _define_filter(self, xml): if callable(xml): xml = xml() - d = threads.deferToThread(self._conn.nwfilterDefineXML, xml) - return d + + # execute in a native thread and block until done + tpool.execute(self._conn.nwfilterDefineXML, xml) @staticmethod def _get_net_and_mask(cidr): net = IPy.IP(cidr) return str(net.net()), str(net.netmask()) - @defer.inlineCallbacks def setup_nwfilters_for_instance(self, instance): """ Creates an NWFilter for the given instance. In the process, @@ -653,10 +646,10 @@ class NWFilterFirewall(object): the base filter are all in place. """ - yield self._define_filter(self.nova_base_ipv4_filter) - yield self._define_filter(self.nova_base_ipv6_filter) - yield self._define_filter(self.nova_dhcp_filter) - yield self._define_filter(self.nova_base_filter) + self._define_filter(self.nova_base_ipv4_filter) + self._define_filter(self.nova_base_ipv6_filter) + self._define_filter(self.nova_dhcp_filter) + self._define_filter(self.nova_base_filter) nwfilter_xml = "\n" \ " \n" % \ @@ -668,20 +661,19 @@ class NWFilterFirewall(object): net, mask = self._get_net_and_mask(network_ref['cidr']) project_filter = self.nova_project_filter(instance['project_id'], net, mask) - yield self._define_filter(project_filter) + self._define_filter(project_filter) nwfilter_xml += " \n" % \ instance['project_id'] for security_group in instance.security_groups: - yield self.ensure_security_group_filter(security_group['id']) + self.ensure_security_group_filter(security_group['id']) nwfilter_xml += " \n" % \ security_group['id'] nwfilter_xml += "" - yield self._define_filter(nwfilter_xml) - return + self._define_filter(nwfilter_xml) def ensure_security_group_filter(self, security_group_id): return self._define_filter( diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index a17e405ab..f997d01d7 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -36,11 +36,10 @@ reactor thread if the VM.get_by_name_label or VM.get_record calls block. """ import logging +import sys import xmlrpclib -from twisted.internet import defer -from twisted.internet import reactor -from twisted.internet import task +from eventlet import tpool from nova import db from nova import flags @@ -110,36 +109,33 @@ class XenAPIConnection(object): return [self._conn.xenapi.VM.get_name_label(vm) \ for vm in self._conn.xenapi.VM.get_all()] - @defer.inlineCallbacks def spawn(self, instance): - vm = yield self._lookup(instance.name) + vm = self._lookup(instance.name) if vm is not None: raise Exception('Attempted to create non-unique name %s' % instance.name) network = db.project_get_network(None, instance.project_id) - network_ref = \ - yield self._find_network_with_bridge(network.bridge) + network_ref = self._find_network_with_bridge(network.bridge) user = AuthManager().get_user(instance.user_id) project = AuthManager().get_project(instance.project_id) - vdi_uuid = yield self._fetch_image( + vdi_uuid = self._fetch_image( instance.image_id, user, project, True) - kernel = yield self._fetch_image( + kernel = self._fetch_image( instance.kernel_id, user, project, False) - ramdisk = yield self._fetch_image( + ramdisk = self._fetch_image( instance.ramdisk_id, user, project, False) - vdi_ref = yield self._call_xenapi('VDI.get_by_uuid', vdi_uuid) + vdi_ref = self._call_xenapi('VDI.get_by_uuid', vdi_uuid) - vm_ref = yield self._create_vm(instance, kernel, ramdisk) - yield self._create_vbd(vm_ref, vdi_ref, 0, True) + vm_ref = self._create_vm(instance, kernel, ramdisk) + self._create_vbd(vm_ref, vdi_ref, 0, True) if network_ref: - yield self._create_vif(vm_ref, network_ref, instance.mac_address) + self._create_vif(vm_ref, network_ref, instance.mac_address) logging.debug('Starting VM %s...', vm_ref) - yield self._call_xenapi('VM.start', vm_ref, False, False) + self._call_xenapi('VM.start', vm_ref, False, False) logging.info('Spawning VM %s created %s.', instance.name, vm_ref) - @defer.inlineCallbacks def _create_vm(self, instance, kernel, ramdisk): """Create a VM record. Returns a Deferred that gives the new VM reference.""" @@ -177,11 +173,10 @@ class XenAPIConnection(object): 'other_config': {}, } logging.debug('Created VM %s...', instance.name) - vm_ref = yield self._call_xenapi('VM.create', rec) + vm_ref = self._call_xenapi('VM.create', rec) logging.debug('Created VM %s as %s.', instance.name, vm_ref) - defer.returnValue(vm_ref) + return vm_ref - @defer.inlineCallbacks def _create_vbd(self, vm_ref, vdi_ref, userdevice, bootable): """Create a VBD record. Returns a Deferred that gives the new VBD reference.""" @@ -200,12 +195,11 @@ class XenAPIConnection(object): vbd_rec['qos_algorithm_params'] = {} vbd_rec['qos_supported_algorithms'] = [] logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) - vbd_ref = yield self._call_xenapi('VBD.create', vbd_rec) + vbd_ref = self._call_xenapi('VBD.create', vbd_rec) logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, vdi_ref) - defer.returnValue(vbd_ref) + return vbd_ref - @defer.inlineCallbacks def _create_vif(self, vm_ref, network_ref, mac_address): """Create a VIF record. Returns a Deferred that gives the new VIF reference.""" @@ -221,24 +215,22 @@ class XenAPIConnection(object): vif_rec['qos_algorithm_params'] = {} logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, network_ref) - vif_ref = yield self._call_xenapi('VIF.create', vif_rec) + vif_ref = self._call_xenapi('VIF.create', vif_rec) logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, vm_ref, network_ref) - defer.returnValue(vif_ref) + return vif_ref - @defer.inlineCallbacks def _find_network_with_bridge(self, bridge): expr = 'field "bridge" = "%s"' % bridge - networks = yield self._call_xenapi('network.get_all_records_where', - expr) + networks = self._call_xenapi('network.get_all_records_where', + expr) if len(networks) == 1: - defer.returnValue(networks.keys()[0]) + return networks.keys()[0] elif len(networks) > 1: raise Exception('Found non-unique network for bridge %s' % bridge) else: raise Exception('Found no network for bridge %s' % bridge) - @defer.inlineCallbacks def _fetch_image(self, image, user, project, use_sr): """use_sr: True to put the image as a VDI in an SR, False to place it on dom0's filesystem. The former is for VM disks, the latter for @@ -255,33 +247,31 @@ class XenAPIConnection(object): args['password'] = user.secret if use_sr: args['add_partition'] = 'true' - task = yield self._async_call_plugin('objectstore', fn, args) - uuid = yield self._wait_for_task(task) - defer.returnValue(uuid) + task = self._async_call_plugin('objectstore', fn, args) + uuid = self._wait_for_task(task) + return uuid - @defer.inlineCallbacks def reboot(self, instance): - vm = yield self._lookup(instance.name) + vm = self._lookup(instance.name) if vm is None: raise Exception('instance not present %s' % instance.name) - task = yield self._call_xenapi('Async.VM.clean_reboot', vm) - yield self._wait_for_task(task) + task = self._call_xenapi('Async.VM.clean_reboot', vm) + self._wait_for_task(task) - @defer.inlineCallbacks def destroy(self, instance): - vm = yield self._lookup(instance.name) + vm = self._lookup(instance.name) if vm is None: # Don't complain, just return. This lets us clean up instances # that have already disappeared from the underlying platform. - defer.returnValue(None) + return try: - task = yield self._call_xenapi('Async.VM.hard_shutdown', vm) - yield self._wait_for_task(task) + task = self._call_xenapi('Async.VM.hard_shutdown', vm) + self._wait_for_task(task) except Exception, exc: logging.warn(exc) try: - task = yield self._call_xenapi('Async.VM.destroy', vm) - yield self._wait_for_task(task) + task = self._call_xenapi('Async.VM.destroy', vm) + self._wait_for_task(task) except Exception, exc: logging.warn(exc) @@ -299,7 +289,6 @@ class XenAPIConnection(object): def get_console_output(self, instance): return 'FAKE CONSOLE OUTPUT' - @utils.deferredToThread def _lookup(self, i): return self._lookup_blocking(i) @@ -316,35 +305,32 @@ class XenAPIConnection(object): def _wait_for_task(self, task): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" - d = defer.Deferred() - reactor.callLater(0, self._poll_task, task, d) - return d - @utils.deferredToThread - def _poll_task(self, task, deferred): + done = event.Event() + loop = utis.LoopingTask(self._poll_task, task, done) + loop.start(FLAGS.xenapi_task_poll_interval, now=True) + return done.wait() + + def _poll_task(self, task, done): """Poll the given XenAPI task, and fire the given Deferred if we get a result.""" try: - #logging.debug('Polling task %s...', task) status = self._conn.xenapi.task.get_status(task) if status == 'pending': - reactor.callLater(FLAGS.xenapi_task_poll_interval, - self._poll_task, task, deferred) + return elif status == 'success': result = self._conn.xenapi.task.get_result(task) logging.info('Task %s status: success. %s', task, result) - deferred.callback(_parse_xmlrpc_value(result)) + done.send(_parse_xmlrpc_value(result)) else: error_info = self._conn.xenapi.task.get_error_info(task) logging.warn('Task %s status: %s. %s', task, status, error_info) - deferred.errback(XenAPI.Failure(error_info)) - #logging.debug('Polling task %s done.', task) + done.send_exception(XenAPI.Failure(error_info)) except Exception, exc: logging.warn(exc) - deferred.errback(exc) + done.send_exception(*sys.exc_info()) - @utils.deferredToThread def _call_xenapi(self, method, *args): """Call the specified XenAPI method on a background thread. Returns a Deferred for the result.""" @@ -353,11 +339,10 @@ class XenAPIConnection(object): f = f.__getattr__(m) return f(*args) - @utils.deferredToThread def _async_call_plugin(self, plugin, fn, args): """Call Async.host.call_plugin on a background thread. Returns a Deferred with the task reference.""" - return _unwrap_plugin_exceptions( + return tpool.execute(_unwrap_plugin_exceptions, self._conn.xenapi.Async.host.call_plugin, self._get_xenapi_host(), plugin, fn, args) -- cgit From 9ca0b3435d93a87407ca42a853562cd06aaa896e Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 22 Nov 2010 12:57:03 +0000 Subject: added placeholders --- nova/virt/xenapi.py | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 0f563aa41..4ed5d047f 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -296,6 +296,14 @@ class XenAPIConnection(object): yield self._wait_for_task(task) except Exception, exc: logging.warn(exc) + + @defer.inlineCallbacks + def attach_volume(self, instance_name, device_path, mountpoint): + return True + + @defer.inlineCallbacks + def detach_volume(self, instance_name, mountpoint): + return True def get_info(self, instance_id): vm = self._lookup_blocking(instance_id) -- cgit From 9f722a0bcdb987c228f4ebf1e42c904a26d0ef73 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 25 Nov 2010 10:42:06 +0000 Subject: first cut of changes for the attach_volume call --- nova/virt/xenapi.py | 94 +++++++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 87 insertions(+), 7 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 4ed5d047f..ec5e7456a 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -63,6 +63,9 @@ from nova.compute import instance_types from nova.compute import power_state from nova.virt import images +from xml.dom.minidom import parseString + + XenAPI = None @@ -90,7 +93,7 @@ XENAPI_POWER_STATE = { 'Halted': power_state.SHUTDOWN, 'Running': power_state.RUNNING, 'Paused': power_state.PAUSED, - 'Suspended': power_state.SHUTDOWN, # FIXME + 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} @@ -126,7 +129,7 @@ class XenAPIConnection(object): def spawn(self, instance): vm = yield self._lookup(instance.name) if vm is not None: - raise Exception('Attempted to create non-unique name %s' % + raise Exception('Attempted to create non-unique name %s' % instance.name) network = db.project_get_network(None, instance.project_id) @@ -296,14 +299,34 @@ class XenAPIConnection(object): yield self._wait_for_task(task) except Exception, exc: logging.warn(exc) - + @defer.inlineCallbacks def attach_volume(self, instance_name, device_path, mountpoint): - return True + # NOTE: No Resource Pool concept so far + logging.debug("Attach_volume: %s, %s, %s", + instance_name, device_path, mountpoint) + volume_info = _parse_volume_info(device_path, mountpoint) + # Create the iSCSI SR, and the PDB through which hosts access SRs. + # But first, retrieve target info, like Host, IQN, LUN and SCSIID + target = yield self._get_target(volume_info) + label = 'SR-%s' % volume_info['volumeId'] + sr_ref = yield self._create_sr(target, label) + # Create VDI and attach VBD to VM + vm = None + try: + task = yield self._call_xenapi('', vm) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + yield True @defer.inlineCallbacks def detach_volume(self, instance_name, mountpoint): - return True + logging.debug("Detach_volume: %s, %s, %s", instance_name, mountpoint) + # Detach VBD from VM + # Forget SR/PDB info associated with host + # TODO: can we avoid destroying the SR every time we detach? + yield True def get_info(self, instance_id): vm = self._lookup_blocking(instance_id) @@ -333,6 +356,52 @@ class XenAPIConnection(object): else: return vms[0] + @utils.deferredToThread + def _get_target(self, volume_info): + return self._get_target_blocking(volume_info) + + def _get_target_blocking(self, volume_info): + target = {} + target['target'] = volume_info['targetHost'] + target['port'] = volume_info['targetPort'] + target['targetIQN'] = volume_info['iqn'] + # We expect SR_BACKEND_FAILURE_107 to retrieve params to create the SR + try: + self._conn.xenapi.SR.create(self._get_xenapi_host(), + target, '-1', '', '', + 'lvmoiscsi', '', False, {}) + except XenAPI.Failure, exc: + if exc.details[0] == 'SR_BACKEND_FAILURE_107': + xml_response = parseString(exc.details[3]) + isciTargets = xml_response.getElementsByTagName('iscsi-target') + # Make sure that only the correct Lun is visible + if len(isciTargets) > 1: + raise Exception('More than one ISCSI Target available') + isciLuns = isciTargets.item(0).getElementsByTagName('LUN') + if len(isciLuns) > 1: + raise Exception('More than one ISCSI Lun available') + # Parse params from the xml response into the dictionary + for n in isciLuns.item(0).childNodes: + if n.nodeType == 1: + target[n.nodeName] = str(n.firstChild.data).strip() + return target + + @utils.deferredToThread + def _create_sr(self, target, label): + return self._create_sr_blocking(target, label) + + def _create_sr_blocking(self, target, label): + # TODO: we might want to put all these string literals into constants + sr = self._conn.xenapi.SR.create(self._get_xenapi_host(), + target, + target['size'], + label, + '', + 'lvmoiscsi', + '', + True, {}) + return sr + def _wait_for_task(self, task): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" @@ -412,7 +481,18 @@ def _parse_xmlrpc_value(val): if not val: return val x = xmlrpclib.loads( - '' + - val + + '' + + val + '') return x[0][0] + + +def _parse_volume_info(device_path, mountpoint): + volume_info = {} + volume_info['volumeId'] = 'vol-qurmrzn9' + # XCP and XenServer add an x to the device name + volume_info['xenMountpoint'] = '/dev/xvdb' + volume_info['targetHost'] = '10.70.177.40' + volume_info['targetPort'] = '3260' # default 3260 + volume_info['iqn'] = 'iqn.2010-10.org.openstack:vol-qurmrzn9' + return volume_info -- cgit From 688d564668aefa4b644236421a3a45fc90486634 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 25 Nov 2010 20:31:32 +0000 Subject: work on attach_volume, with a few things to iron out --- nova/virt/xenapi.py | 99 ++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 83 insertions(+), 16 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 5bf98468e..d3167ebf3 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -147,7 +147,7 @@ class XenAPIConnection(object): vdi_ref = yield self._call_xenapi('VDI.get_by_uuid', vdi_uuid) vm_ref = yield self._create_vm(instance, kernel, ramdisk) - yield self._create_vbd(vm_ref, vdi_ref, 0, True) + yield self._create_vbd(vm_ref, vdi_ref, 0, True, True, False) if network_ref: yield self._create_vif(vm_ref, network_ref, instance.mac_address) logging.debug('Starting VM %s...', vm_ref) @@ -197,7 +197,21 @@ class XenAPIConnection(object): defer.returnValue(vm_ref) @defer.inlineCallbacks - def _create_vbd(self, vm_ref, vdi_ref, userdevice, bootable): + def _create_vdi(self, sr_ref, size, type, label, description, read_only, sharable): + vdi_rec = {} + vdi_rec['read_only'] = read_only + vdi_rec['SR'] = sr_ref + vdi_rec['virtual_size'] = str(size) + vdi_rec['name_label'] = label + vdi_rec['name_description'] = description + vdi_rec['sharable'] = sharable + vdi_rec['type'] = type + vdi_rec['other_config'] = {} + vdi_ref = yield self._call_xenapi('VDI.create', vdi_rec) + defer.returnValue(vdi_ref) + + @defer.inlineCallbacks + def _create_vbd(self, vm_ref, vdi_ref, userdevice, bootable, unpluggable, empty): """Create a VBD record. Returns a Deferred that gives the new VBD reference.""" @@ -208,8 +222,8 @@ class XenAPIConnection(object): vbd_rec['bootable'] = bootable vbd_rec['mode'] = 'RW' vbd_rec['type'] = 'disk' - vbd_rec['unpluggable'] = True - vbd_rec['empty'] = False + vbd_rec['unpluggable'] = unpluggable + vbd_rec['empty'] = empty vbd_rec['other_config'] = {} vbd_rec['qos_algorithm_type'] = '' vbd_rec['qos_algorithm_params'] = {} @@ -320,14 +334,33 @@ class XenAPIConnection(object): # But first, retrieve target info, like Host, IQN, LUN and SCSIID target = yield self._get_target(volume_info) label = 'SR-%s' % volume_info['volumeId'] - sr_ref = yield self._create_sr(target, label) + description = 'Attached-to:%s' % instance_name + # Create SR and check the physical space available for the VDI allocation + sr_ref = yield self._create_sr(target, label, description) + disk_size = yield self._get_sr_available_space(sr_ref) # Create VDI and attach VBD to VM - vm = None + vm_ref = yield self._lookup(instance_name) + logging.debug("Mounting disk of: %s GB", (disk_size / (1024*1024*1024.0))) try: - task = yield self._call_xenapi('', vm) - yield self._wait_for_task(task) + vdi_ref = yield self._create_vdi(sr_ref, disk_size, + 'user', volume_info['volumeId'], '', + False, False) except Exception, exc: logging.warn(exc) + if sr_ref: + yield self._destroy_sr(sr_ref) + raise Exception('Unable to create VDI on SR %s' % sr_ref) + else: + try: + userdevice = 2 # FIXME: this depends on the numbers of attached disks + vbd_ref = yield self._create_vbd(vm_ref, vdi_ref, userdevice, False, True, False) + task = yield self._call_xenapi('Async.VBD.plug', vbd_ref) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + if sr_ref: + yield self._destroy_sr(sr_ref) + raise Exception('Unable to create VBD on SR %s' % sr_ref) yield True @defer.inlineCallbacks @@ -395,23 +428,57 @@ class XenAPIConnection(object): if n.nodeType == 1: target[n.nodeName] = str(n.firstChild.data).strip() return target + + @utils.deferredToThread + def _get_sr_available_space(self, sr_ref): + return self._get_sr_available_space_blocking(sr_ref) + + def _get_sr_available_space_blocking(self, sr_ref): + pu = self._conn.xenapi.SR.get_physical_utilisation(sr_ref) + ps = self._conn.xenapi.SR.get_physical_size(sr_ref) + return (int(ps) - int(pu)) - (8 * 1024 * 1024) @utils.deferredToThread - def _create_sr(self, target, label): - return self._create_sr_blocking(target, label) + def _create_sr(self, target, label, description): + return self._create_sr_blocking(target, label, description) - def _create_sr_blocking(self, target, label): + def _create_sr_blocking(self, target, label, description): # TODO: we might want to put all these string literals into constants - sr = self._conn.xenapi.SR.create(self._get_xenapi_host(), + sr_ref = self._conn.xenapi.SR.create(self._get_xenapi_host(), target, target['size'], label, - '', + description, 'lvmoiscsi', '', True, {}) - return sr + # TODO: there might be some timing issues here + self._conn.xenapi.SR.scan(sr_ref) + return sr_ref + @defer.inlineCallbacks + def _destroy_sr(self, sr_ref): + # Some clean-up depending on the state of the SR + #yield self._destroy_vdbs(sr_ref) + #yield self._destroy_vdis(sr_ref) + # Destroy PDBs + pbds = yield self._conn.xenapi.SR.get_PBDs(sr_ref) + for pbd_ref in pbds: + try: + task = yield self._call_xenapi('Async.PBD.unplug', pbd_ref) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + else: + task = yield self._call_xenapi('Async.PBD.destroy', pbd_ref) + yield self._wait_for_task(task) + # Forget SR + try: + task = yield self._call_xenapi('Async.SR.forget', sr_ref) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + @utils.deferredToThread def _lookup_vm_vdis(self, vm): return self._lookup_vm_vdis_blocking(vm) @@ -524,8 +591,8 @@ def _parse_xmlrpc_value(val): def _parse_volume_info(device_path, mountpoint): volume_info = {} volume_info['volumeId'] = 'vol-qurmrzn9' - # XCP and XenServer add an x to the device name - volume_info['xenMountpoint'] = '/dev/xvdb' + # Because XCP/XS want an x beforehand + volume_info['xenMountpoint'] = '/dev/xvdc' volume_info['targetHost'] = '10.70.177.40' volume_info['targetPort'] = '3260' # default 3260 volume_info['iqn'] = 'iqn.2010-10.org.openstack:vol-qurmrzn9' -- cgit From a9b900d24020b68284e402a98ee28c107de0bd71 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 25 Nov 2010 20:42:22 +0000 Subject: added attach_volume implementation --- nova/virt/xenapi.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index d3167ebf3..236360f11 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -593,7 +593,7 @@ def _parse_volume_info(device_path, mountpoint): volume_info['volumeId'] = 'vol-qurmrzn9' # Because XCP/XS want an x beforehand volume_info['xenMountpoint'] = '/dev/xvdc' - volume_info['targetHost'] = '10.70.177.40' + volume_info['targetHost'] = '' volume_info['targetPort'] = '3260' # default 3260 volume_info['iqn'] = 'iqn.2010-10.org.openstack:vol-qurmrzn9' return volume_info -- cgit From a44ee54dfe3f243a44636e9224082e86fdee452f Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Sat, 27 Nov 2010 12:56:19 +0000 Subject: first cut of the refactoring of the XenAPIConnection class. Currently the class merged both the code for managing the XenAPI connection and the business logic for implementing Nova operations. If left like this, it would eventually become difficult to read, maintain and extend. The file was getting kind of big and cluttered, so a quick refactoring now will save a lot of headaches later. --- nova/virt/xenapi.py | 323 +++++------------------------ nova/virt/xenapi/power_state.py | 26 +++ nova/virt/xenapi/xenapi.py | 439 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 515 insertions(+), 273 deletions(-) create mode 100644 nova/virt/xenapi/power_state.py create mode 100644 nova/virt/xenapi/xenapi.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 3169562a5..93c119205 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -54,14 +54,9 @@ from twisted.internet import defer from twisted.internet import reactor from twisted.internet import task -from nova import db -from nova import flags -from nova import process -from nova import utils -from nova.auth.manager import AuthManager -from nova.compute import instance_types -from nova.compute import power_state -from nova.virt import images +from xenapi import power_state +from xenapi import vmops +from xenapi import volumeops XenAPI = None @@ -86,14 +81,6 @@ flags.DEFINE_float('xenapi_task_poll_interval', 'connection_type=xenapi.') -XENAPI_POWER_STATE = { - 'Halted': power_state.SHUTDOWN, - 'Running': power_state.RUNNING, - 'Paused': power_state.PAUSED, - 'Suspended': power_state.SHUTDOWN, # FIXME - 'Crashed': power_state.CRASHED} - - def get_connection(_): """Note that XenAPI doesn't have a read-only connection mode, so the read_only parameter is ignored.""" @@ -115,273 +102,83 @@ def get_connection(_): class XenAPIConnection(object): def __init__(self, url, user, pw): - self._conn = XenAPI.Session(url) - self._conn.login_with_password(user, pw) - + self._session = XenAPISession(url, user, pw) + self._vmops = VMOps(sef._session) + self._volumeops = volumeOps(self._session) + def list_instances(self): - return [self._conn.xenapi.VM.get_name_label(vm) \ - for vm in self._conn.xenapi.VM.get_all()] - - @defer.inlineCallbacks + return self._vmops.list_instances() + def spawn(self, instance): - vm = yield self._lookup(instance.name) - if vm is not None: - raise Exception('Attempted to create non-unique name %s' % - instance.name) - - network = db.project_get_network(None, instance.project_id) - network_ref = \ - yield self._find_network_with_bridge(network.bridge) - - user = AuthManager().get_user(instance.user_id) - project = AuthManager().get_project(instance.project_id) - vdi_uuid = yield self._fetch_image( - instance.image_id, user, project, True) - kernel = yield self._fetch_image( - instance.kernel_id, user, project, False) - ramdisk = yield self._fetch_image( - instance.ramdisk_id, user, project, False) - vdi_ref = yield self._call_xenapi('VDI.get_by_uuid', vdi_uuid) - - vm_ref = yield self._create_vm(instance, kernel, ramdisk) - yield self._create_vbd(vm_ref, vdi_ref, 0, True) - if network_ref: - yield self._create_vif(vm_ref, network_ref, instance.mac_address) - logging.debug('Starting VM %s...', vm_ref) - yield self._call_xenapi('VM.start', vm_ref, False, False) - logging.info('Spawning VM %s created %s.', instance.name, vm_ref) - - @defer.inlineCallbacks - def _create_vm(self, instance, kernel, ramdisk): - """Create a VM record. Returns a Deferred that gives the new - VM reference.""" - - instance_type = instance_types.INSTANCE_TYPES[instance.instance_type] - mem = str(long(instance_type['memory_mb']) * 1024 * 1024) - vcpus = str(instance_type['vcpus']) - rec = { - 'name_label': instance.name, - 'name_description': '', - 'is_a_template': False, - 'memory_static_min': '0', - 'memory_static_max': mem, - 'memory_dynamic_min': mem, - 'memory_dynamic_max': mem, - 'VCPUs_at_startup': vcpus, - 'VCPUs_max': vcpus, - 'VCPUs_params': {}, - 'actions_after_shutdown': 'destroy', - 'actions_after_reboot': 'restart', - 'actions_after_crash': 'destroy', - 'PV_bootloader': '', - 'PV_kernel': kernel, - 'PV_ramdisk': ramdisk, - 'PV_args': 'root=/dev/xvda1', - 'PV_bootloader_args': '', - 'PV_legacy_args': '', - 'HVM_boot_policy': '', - 'HVM_boot_params': {}, - 'platform': {}, - 'PCI_bus': '', - 'recommendations': '', - 'affinity': '', - 'user_version': '0', - 'other_config': {}, - } - logging.debug('Created VM %s...', instance.name) - vm_ref = yield self._call_xenapi('VM.create', rec) - logging.debug('Created VM %s as %s.', instance.name, vm_ref) - defer.returnValue(vm_ref) - - @defer.inlineCallbacks - def _create_vbd(self, vm_ref, vdi_ref, userdevice, bootable): - """Create a VBD record. Returns a Deferred that gives the new - VBD reference.""" - - vbd_rec = {} - vbd_rec['VM'] = vm_ref - vbd_rec['VDI'] = vdi_ref - vbd_rec['userdevice'] = str(userdevice) - vbd_rec['bootable'] = bootable - vbd_rec['mode'] = 'RW' - vbd_rec['type'] = 'disk' - vbd_rec['unpluggable'] = True - vbd_rec['empty'] = False - vbd_rec['other_config'] = {} - vbd_rec['qos_algorithm_type'] = '' - vbd_rec['qos_algorithm_params'] = {} - vbd_rec['qos_supported_algorithms'] = [] - logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) - vbd_ref = yield self._call_xenapi('VBD.create', vbd_rec) - logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, - vdi_ref) - defer.returnValue(vbd_ref) - - @defer.inlineCallbacks - def _create_vif(self, vm_ref, network_ref, mac_address): - """Create a VIF record. Returns a Deferred that gives the new - VIF reference.""" - - vif_rec = {} - vif_rec['device'] = '0' - vif_rec['network'] = network_ref - vif_rec['VM'] = vm_ref - vif_rec['MAC'] = mac_address - vif_rec['MTU'] = '1500' - vif_rec['other_config'] = {} - vif_rec['qos_algorithm_type'] = '' - vif_rec['qos_algorithm_params'] = {} - logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, - network_ref) - vif_ref = yield self._call_xenapi('VIF.create', vif_rec) - logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, - vm_ref, network_ref) - defer.returnValue(vif_ref) - - @defer.inlineCallbacks - def _find_network_with_bridge(self, bridge): - expr = 'field "bridge" = "%s"' % bridge - networks = yield self._call_xenapi('network.get_all_records_where', - expr) - if len(networks) == 1: - defer.returnValue(networks.keys()[0]) - elif len(networks) > 1: - raise Exception('Found non-unique network for bridge %s' % bridge) - else: - raise Exception('Found no network for bridge %s' % bridge) - - @defer.inlineCallbacks - def _fetch_image(self, image, user, project, use_sr): - """use_sr: True to put the image as a VDI in an SR, False to place - it on dom0's filesystem. The former is for VM disks, the latter for - its kernel and ramdisk (if external kernels are being used). - Returns a Deferred that gives the new VDI UUID.""" - - url = images.image_url(image) - access = AuthManager().get_access_key(user, project) - logging.debug("Asking xapi to fetch %s as %s" % (url, access)) - fn = use_sr and 'get_vdi' or 'get_kernel' - args = {} - args['src_url'] = url - args['username'] = access - args['password'] = user.secret - if use_sr: - args['add_partition'] = 'true' - task = yield self._async_call_plugin('objectstore', fn, args) - uuid = yield self._wait_for_task(task) - defer.returnValue(uuid) - - @defer.inlineCallbacks + self._vmops.spawn(instance) + def reboot(self, instance): - vm = yield self._lookup(instance.name) - if vm is None: - raise Exception('instance not present %s' % instance.name) - task = yield self._call_xenapi('Async.VM.clean_reboot', vm) - yield self._wait_for_task(task) + self._vmops.reboot(instance) - @defer.inlineCallbacks def destroy(self, instance): - vm = yield self._lookup(instance.name) - if vm is None: - # Don't complain, just return. This lets us clean up instances - # that have already disappeared from the underlying platform. - defer.returnValue(None) - # Get the VDIs related to the VM - vdis = yield self._lookup_vm_vdis(vm) - try: - task = yield self._call_xenapi('Async.VM.hard_shutdown', vm) - yield self._wait_for_task(task) - except Exception, exc: - logging.warn(exc) - # Disk clean-up - if vdis: - for vdi in vdis: - try: - task = yield self._call_xenapi('Async.VDI.destroy', vdi) - yield self._wait_for_task(task) - except Exception, exc: - logging.warn(exc) - try: - task = yield self._call_xenapi('Async.VM.destroy', vm) - yield self._wait_for_task(task) - except Exception, exc: - logging.warn(exc) - + self._vmops.destroy(instance) + def get_info(self, instance_id): - vm = self._lookup_blocking(instance_id) - if vm is None: - raise Exception('instance not present %s' % instance_id) - rec = self._conn.xenapi.VM.get_record(vm) - return {'state': XENAPI_POWER_STATE[rec['power_state']], - 'max_mem': long(rec['memory_static_max']) >> 10, - 'mem': long(rec['memory_dynamic_max']) >> 10, - 'num_cpu': rec['VCPUs_max'], - 'cpu_time': 0} - + return self._vmops.get_info(instance_id) + def get_console_output(self, instance): - return 'FAKE CONSOLE OUTPUT' + return self._vmops.get_console_output(instance) + + def attach_volume(self, instance_name, device_path, mountpoint): + return self._volumeops.attach_volume(instance_name, device_path, mountpoint) + + def detach_volume(self, instance_name, mountpoint): + return self._volumeops.detach_volume(instance_name, mountpoint) + + +class XenAPISession(object): + def __init__(self, url, user, pw): + self._session = XenAPI.Session(url) + self._session.login_with_password(user, pw) @utils.deferredToThread - def _lookup(self, i): - return self._lookup_blocking(i) - - def _lookup_blocking(self, i): - vms = self._conn.xenapi.VM.get_by_name_label(i) - n = len(vms) - if n == 0: - return None - elif n > 1: - raise Exception('duplicate name found: %s' % i) - else: - return vms[0] + def call_xenapi(self, method, *args): + """Call the specified XenAPI method on a background thread. Returns + a Deferred for the result.""" + f = self._session.xenapi + for m in method.split('.'): + f = f.__getattr__(m) + return f(*args) @utils.deferredToThread - def _lookup_vm_vdis(self, vm): - return self._lookup_vm_vdis_blocking(vm) - - def _lookup_vm_vdis_blocking(self, vm): - # Firstly we get the VBDs, then the VDIs. - # TODO: do we leave the read-only devices? - vbds = self._conn.xenapi.VM.get_VBDs(vm) - vdis = [] - if vbds: - for vbd in vbds: - try: - vdi = self._conn.xenapi.VBD.get_VDI(vbd) - # Test valid VDI - record = self._conn.xenapi.VDI.get_record(vdi) - except Exception, exc: - logging.warn(exc) - else: - vdis.append(vdi) - if len(vdis) > 0: - return vdis - else: - return None + def async_call_plugin(self, plugin, fn, args): + """Call Async.host.call_plugin on a background thread. Returns a + Deferred with the task reference.""" + return _unwrap_plugin_exceptions( + self._session.xenapi.Async.host.call_plugin, + self._get_xenapi_host(), plugin, fn, args) - def _wait_for_task(self, task): + def get_xenapi_host(self): + return self._session.xenapi.session.get_this_host(self._session.handle) + + def wait_for_task(self, task): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" d = defer.Deferred() reactor.callLater(0, self._poll_task, task, d) return d - + @utils.deferredToThread def _poll_task(self, task, deferred): """Poll the given XenAPI task, and fire the given Deferred if we get a result.""" try: #logging.debug('Polling task %s...', task) - status = self._conn.xenapi.task.get_status(task) + status = self._session.xenapi.task.get_status(task) if status == 'pending': reactor.callLater(FLAGS.xenapi_task_poll_interval, self._poll_task, task, deferred) elif status == 'success': - result = self._conn.xenapi.task.get_result(task) + result = self._session.xenapi.task.get_result(task) logging.info('Task %s status: success. %s', task, result) deferred.callback(_parse_xmlrpc_value(result)) else: - error_info = self._conn.xenapi.task.get_error_info(task) + error_info = self._session.xenapi.task.get_error_info(task) logging.warn('Task %s status: %s. %s', task, status, error_info) deferred.errback(XenAPI.Failure(error_info)) @@ -390,26 +187,6 @@ class XenAPIConnection(object): logging.warn(exc) deferred.errback(exc) - @utils.deferredToThread - def _call_xenapi(self, method, *args): - """Call the specified XenAPI method on a background thread. Returns - a Deferred for the result.""" - f = self._conn.xenapi - for m in method.split('.'): - f = f.__getattr__(m) - return f(*args) - - @utils.deferredToThread - def _async_call_plugin(self, plugin, fn, args): - """Call Async.host.call_plugin on a background thread. Returns a - Deferred with the task reference.""" - return _unwrap_plugin_exceptions( - self._conn.xenapi.Async.host.call_plugin, - self._get_xenapi_host(), plugin, fn, args) - - def _get_xenapi_host(self): - return self._conn.xenapi.session.get_this_host(self._conn.handle) - def _unwrap_plugin_exceptions(func, *args, **kwargs): try: diff --git a/nova/virt/xenapi/power_state.py b/nova/virt/xenapi/power_state.py new file mode 100644 index 000000000..d2d8fba42 --- /dev/null +++ b/nova/virt/xenapi/power_state.py @@ -0,0 +1,26 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from nova.compute import power_state + + +XENAPI_POWER_STATE = { + 'Halted': power_state.SHUTDOWN, + 'Running': power_state.RUNNING, + 'Paused': power_state.PAUSED, + 'Suspended': power_state.SHUTDOWN, # FIXME + 'Crashed': power_state.CRASHED} + \ No newline at end of file diff --git a/nova/virt/xenapi/xenapi.py b/nova/virt/xenapi/xenapi.py new file mode 100644 index 000000000..ddbef4303 --- /dev/null +++ b/nova/virt/xenapi/xenapi.py @@ -0,0 +1,439 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +A connection to XenServer or Xen Cloud Platform. + +The concurrency model for this class is as follows: + +All XenAPI calls are on a thread (using t.i.t.deferToThread, via the decorator +deferredToThread). They are remote calls, and so may hang for the usual +reasons. They should not be allowed to block the reactor thread. + +All long-running XenAPI calls (VM.start, VM.reboot, etc) are called async +(using XenAPI.VM.async_start etc). These return a task, which can then be +polled for completion. Polling is handled using reactor.callLater. + +This combination of techniques means that we don't block the reactor thread at +all, and at the same time we don't hold lots of threads waiting for +long-running operations. + +FIXME: get_info currently doesn't conform to these rules, and will block the +reactor thread if the VM.get_by_name_label or VM.get_record calls block. + +**Related Flags** + +:xenapi_connection_url: URL for connection to XenServer/Xen Cloud Platform. +:xenapi_connection_username: Username for connection to XenServer/Xen Cloud + Platform (default: root). +:xenapi_connection_password: Password for connection to XenServer/Xen Cloud + Platform. +:xenapi_task_poll_interval: The interval (seconds) used for polling of + remote tasks (Async.VM.start, etc) + (default: 0.5). + +""" + +import logging +import xmlrpclib + +from twisted.internet import defer +from twisted.internet import reactor +from twisted.internet import task + +from nova import db +from nova import flags +from nova import process +from nova import utils +from nova.auth.manager import AuthManager # wrap this one +from nova.compute import instance_types # wrap this one +from xenapi import power_state +from nova.virt import images # wrap this one + +XenAPI = None + + +FLAGS = flags.FLAGS +flags.DEFINE_string('xenapi_connection_url', + None, + 'URL for connection to XenServer/Xen Cloud Platform.' + ' Required if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_username', + 'root', + 'Username for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_password', + None, + 'Password for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_float('xenapi_task_poll_interval', + 0.5, + 'The interval used for polling of remote tasks ' + '(Async.VM.start, etc). Used only if ' + 'connection_type=xenapi.') + + +def get_connection(_): + """Note that XenAPI doesn't have a read-only connection mode, so + the read_only parameter is ignored.""" + # This is loaded late so that there's no need to install this + # library when not using XenAPI. + global XenAPI + if XenAPI is None: + XenAPI = __import__('XenAPI') + url = FLAGS.xenapi_connection_url + username = FLAGS.xenapi_connection_username + password = FLAGS.xenapi_connection_password + if not url or password is None: + raise Exception('Must specify xenapi_connection_url, ' + 'xenapi_connection_username (optionally), and ' + 'xenapi_connection_password to use ' + 'connection_type=xenapi') + return XenAPIConnection(url, username, password) + + +class XenAPISession(object): + def __init__(self, url, user, pw): + self._session = XenAPI.Session(url) + self._session.login_with_password(user, pw) + + def session(self): + return self._session + + def list_instances(self): + return [self._session.xenapi.VM.get_name_label(vm) \ + for vm in self._session.xenapi.VM.get_all()] + + @defer.inlineCallbacks + def spawn(self, instance): + vm = yield self._lookup(instance.name) + if vm is not None: + raise Exception('Attempted to create non-unique name %s' % + instance.name) + + network = db.project_get_network(None, instance.project_id) + network_ref = \ + yield self._find_network_with_bridge(network.bridge) + + user = AuthManager().get_user(instance.user_id) + project = AuthManager().get_project(instance.project_id) + vdi_uuid = yield self._fetch_image( + instance.image_id, user, project, True) + kernel = yield self._fetch_image( + instance.kernel_id, user, project, False) + ramdisk = yield self._fetch_image( + instance.ramdisk_id, user, project, False) + vdi_ref = yield self._call_xenapi('VDI.get_by_uuid', vdi_uuid) + + vm_ref = yield self._create_vm(instance, kernel, ramdisk) + yield self._create_vbd(vm_ref, vdi_ref, 0, True) + if network_ref: + yield self._create_vif(vm_ref, network_ref, instance.mac_address) + logging.debug('Starting VM %s...', vm_ref) + yield self._call_xenapi('VM.start', vm_ref, False, False) + logging.info('Spawning VM %s created %s.', instance.name, vm_ref) + + @defer.inlineCallbacks + def _create_vm(self, instance, kernel, ramdisk): + """Create a VM record. Returns a Deferred that gives the new + VM reference.""" + + instance_type = instance_types.INSTANCE_TYPES[instance.instance_type] + mem = str(long(instance_type['memory_mb']) * 1024 * 1024) + vcpus = str(instance_type['vcpus']) + rec = { + 'name_label': instance.name, + 'name_description': '', + 'is_a_template': False, + 'memory_static_min': '0', + 'memory_static_max': mem, + 'memory_dynamic_min': mem, + 'memory_dynamic_max': mem, + 'VCPUs_at_startup': vcpus, + 'VCPUs_max': vcpus, + 'VCPUs_params': {}, + 'actions_after_shutdown': 'destroy', + 'actions_after_reboot': 'restart', + 'actions_after_crash': 'destroy', + 'PV_bootloader': '', + 'PV_kernel': kernel, + 'PV_ramdisk': ramdisk, + 'PV_args': 'root=/dev/xvda1', + 'PV_bootloader_args': '', + 'PV_legacy_args': '', + 'HVM_boot_policy': '', + 'HVM_boot_params': {}, + 'platform': {}, + 'PCI_bus': '', + 'recommendations': '', + 'affinity': '', + 'user_version': '0', + 'other_config': {}, + } + logging.debug('Created VM %s...', instance.name) + vm_ref = yield self._call_xenapi('VM.create', rec) + logging.debug('Created VM %s as %s.', instance.name, vm_ref) + defer.returnValue(vm_ref) + + @defer.inlineCallbacks + def _create_vbd(self, vm_ref, vdi_ref, userdevice, bootable): + """Create a VBD record. Returns a Deferred that gives the new + VBD reference.""" + + vbd_rec = {} + vbd_rec['VM'] = vm_ref + vbd_rec['VDI'] = vdi_ref + vbd_rec['userdevice'] = str(userdevice) + vbd_rec['bootable'] = bootable + vbd_rec['mode'] = 'RW' + vbd_rec['type'] = 'disk' + vbd_rec['unpluggable'] = True + vbd_rec['empty'] = False + vbd_rec['other_config'] = {} + vbd_rec['qos_algorithm_type'] = '' + vbd_rec['qos_algorithm_params'] = {} + vbd_rec['qos_supported_algorithms'] = [] + logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) + vbd_ref = yield self._call_xenapi('VBD.create', vbd_rec) + logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, + vdi_ref) + defer.returnValue(vbd_ref) + + @defer.inlineCallbacks + def _create_vif(self, vm_ref, network_ref, mac_address): + """Create a VIF record. Returns a Deferred that gives the new + VIF reference.""" + + vif_rec = {} + vif_rec['device'] = '0' + vif_rec['network'] = network_ref + vif_rec['VM'] = vm_ref + vif_rec['MAC'] = mac_address + vif_rec['MTU'] = '1500' + vif_rec['other_config'] = {} + vif_rec['qos_algorithm_type'] = '' + vif_rec['qos_algorithm_params'] = {} + logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, + network_ref) + vif_ref = yield self._call_xenapi('VIF.create', vif_rec) + logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, + vm_ref, network_ref) + defer.returnValue(vif_ref) + + @defer.inlineCallbacks + def _find_network_with_bridge(self, bridge): + expr = 'field "bridge" = "%s"' % bridge + networks = yield self._call_xenapi('network.get_all_records_where', + expr) + if len(networks) == 1: + defer.returnValue(networks.keys()[0]) + elif len(networks) > 1: + raise Exception('Found non-unique network for bridge %s' % bridge) + else: + raise Exception('Found no network for bridge %s' % bridge) + + @defer.inlineCallbacks + def _fetch_image(self, image, user, project, use_sr): + """use_sr: True to put the image as a VDI in an SR, False to place + it on dom0's filesystem. The former is for VM disks, the latter for + its kernel and ramdisk (if external kernels are being used). + Returns a Deferred that gives the new VDI UUID.""" + + url = images.image_url(image) + access = AuthManager().get_access_key(user, project) + logging.debug("Asking xapi to fetch %s as %s" % (url, access)) + fn = use_sr and 'get_vdi' or 'get_kernel' + args = {} + args['src_url'] = url + args['username'] = access + args['password'] = user.secret + if use_sr: + args['add_partition'] = 'true' + task = yield self._async_call_plugin('objectstore', fn, args) + uuid = yield self._wait_for_task(task) + defer.returnValue(uuid) + + @defer.inlineCallbacks + def reboot(self, instance): + vm = yield self._lookup(instance.name) + if vm is None: + raise Exception('instance not present %s' % instance.name) + task = yield self._call_xenapi('Async.VM.clean_reboot', vm) + yield self._wait_for_task(task) + + @defer.inlineCallbacks + def destroy(self, instance): + vm = yield self._lookup(instance.name) + if vm is None: + # Don't complain, just return. This lets us clean up instances + # that have already disappeared from the underlying platform. + defer.returnValue(None) + # Get the VDIs related to the VM + vdis = yield self._lookup_vm_vdis(vm) + try: + task = yield self._call_xenapi('Async.VM.hard_shutdown', vm) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + # Disk clean-up + if vdis: + for vdi in vdis: + try: + task = yield self._call_xenapi('Async.VDI.destroy', vdi) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + try: + task = yield self._call_xenapi('Async.VM.destroy', vm) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + + def get_info(self, instance_id): + vm = self._lookup_blocking(instance_id) + if vm is None: + raise Exception('instance not present %s' % instance_id) + rec = self._session.xenapi.VM.get_record(vm) + return {'state': XENAPI_POWER_STATE[rec['power_state']], + 'max_mem': long(rec['memory_static_max']) >> 10, + 'mem': long(rec['memory_dynamic_max']) >> 10, + 'num_cpu': rec['VCPUs_max'], + 'cpu_time': 0} + + def get_console_output(self, instance): + return 'FAKE CONSOLE OUTPUT' + + @utils.deferredToThread + def _lookup(self, i): + return self._lookup_blocking(i) + + def _lookup_blocking(self, i): + vms = self._session.xenapi.VM.get_by_name_label(i) + n = len(vms) + if n == 0: + return None + elif n > 1: + raise Exception('duplicate name found: %s' % i) + else: + return vms[0] + + @utils.deferredToThread + def _lookup_vm_vdis(self, vm): + return self._lookup_vm_vdis_blocking(vm) + + def _lookup_vm_vdis_blocking(self, vm): + # Firstly we get the VBDs, then the VDIs. + # TODO: do we leave the read-only devices? + vbds = self._session.xenapi.VM.get_VBDs(vm) + vdis = [] + if vbds: + for vbd in vbds: + try: + vdi = self._session.xenapi.VBD.get_VDI(vbd) + # Test valid VDI + record = self._session.xenapi.VDI.get_record(vdi) + except Exception, exc: + logging.warn(exc) + else: + vdis.append(vdi) + if len(vdis) > 0: + return vdis + else: + return None + + def _wait_for_task(self, task): + """Return a Deferred that will give the result of the given task. + The task is polled until it completes.""" + d = defer.Deferred() + reactor.callLater(0, self._poll_task, task, d) + return d + + @utils.deferredToThread + def _poll_task(self, task, deferred): + """Poll the given XenAPI task, and fire the given Deferred if we + get a result.""" + try: + #logging.debug('Polling task %s...', task) + status = self._session.xenapi.task.get_status(task) + if status == 'pending': + reactor.callLater(FLAGS.xenapi_task_poll_interval, + self._poll_task, task, deferred) + elif status == 'success': + result = self._session.xenapi.task.get_result(task) + logging.info('Task %s status: success. %s', task, result) + deferred.callback(_parse_xmlrpc_value(result)) + else: + error_info = self._session.xenapi.task.get_error_info(task) + logging.warn('Task %s status: %s. %s', task, status, + error_info) + deferred.errback(XenAPI.Failure(error_info)) + #logging.debug('Polling task %s done.', task) + except Exception, exc: + logging.warn(exc) + deferred.errback(exc) + + @utils.deferredToThread + def _call_xenapi(self, method, *args): + """Call the specified XenAPI method on a background thread. Returns + a Deferred for the result.""" + f = self._session.xenapi + for m in method.split('.'): + f = f.__getattr__(m) + return f(*args) + + @utils.deferredToThread + def _async_call_plugin(self, plugin, fn, args): + """Call Async.host.call_plugin on a background thread. Returns a + Deferred with the task reference.""" + return _unwrap_plugin_exceptions( + self._session.xenapi.Async.host.call_plugin, + self._get_xenapi_host(), plugin, fn, args) + + def _get_xenapi_host(self): + return self._session.xenapi.session.get_this_host(self._session.handle) + + +def _unwrap_plugin_exceptions(func, *args, **kwargs): + try: + return func(*args, **kwargs) + except XenAPI.Failure, exc: + logging.debug("Got exception: %s", exc) + if (len(exc.details) == 4 and + exc.details[0] == 'XENAPI_PLUGIN_EXCEPTION' and + exc.details[2] == 'Failure'): + params = None + try: + params = eval(exc.details[3]) + except: + raise exc + raise XenAPI.Failure(params) + else: + raise + except xmlrpclib.ProtocolError, exc: + logging.debug("Got exception: %s", exc) + raise + + +def _parse_xmlrpc_value(val): + """Parse the given value as if it were an XML-RPC value. This is + sometimes used as the format for the task.result field.""" + if not val: + return val + x = xmlrpclib.loads( + '' + + val + + '') + return x[0][0] -- cgit From 541f8ce212a33d14ac5ba48b3dde6c43a60bc368 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Sat, 27 Nov 2010 13:33:38 +0000 Subject: typos and pep8 fixes --- nova/virt/xenapi.py | 35 ++++++++++++++++++++--------------- nova/virt/xenapi/power_state.py | 1 - 2 files changed, 20 insertions(+), 16 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 93c119205..a17894c84 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -55,8 +55,8 @@ from twisted.internet import reactor from twisted.internet import task from xenapi import power_state -from xenapi import vmops -from xenapi import volumeops +from xenapi import VMOps +from xenapi import VolumeOps XenAPI = None @@ -102,30 +102,32 @@ def get_connection(_): class XenAPIConnection(object): def __init__(self, url, user, pw): - self._session = XenAPISession(url, user, pw) - self._vmops = VMOps(sef._session) - self._volumeops = volumeOps(self._session) - + session = XenAPISession(url, user, pw) + self._vmops = VMOps(session) + self._volumeops = VolumeOps(session) + def list_instances(self): return self._vmops.list_instances() - + def spawn(self, instance): self._vmops.spawn(instance) - + def reboot(self, instance): - self._vmops.reboot(instance) + self._vmops.reboot(instance) def destroy(self, instance): self._vmops.destroy(instance) - + def get_info(self, instance_id): return self._vmops.get_info(instance_id) - + def get_console_output(self, instance): - return self._vmops.get_console_output(instance) - + return self._vmops.get_console_output(instance) + def attach_volume(self, instance_name, device_path, mountpoint): - return self._volumeops.attach_volume(instance_name, device_path, mountpoint) + return self._volumeops.attach_volume(instance_name, + device_path, + mountpoint) def detach_volume(self, instance_name, mountpoint): return self._volumeops.detach_volume(instance_name, mountpoint) @@ -136,6 +138,9 @@ class XenAPISession(object): self._session = XenAPI.Session(url) self._session.login_with_password(user, pw) + def get_session(self): + return self._session + @utils.deferredToThread def call_xenapi(self, method, *args): """Call the specified XenAPI method on a background thread. Returns @@ -162,7 +167,7 @@ class XenAPISession(object): d = defer.Deferred() reactor.callLater(0, self._poll_task, task, d) return d - + @utils.deferredToThread def _poll_task(self, task, deferred): """Poll the given XenAPI task, and fire the given Deferred if we diff --git a/nova/virt/xenapi/power_state.py b/nova/virt/xenapi/power_state.py index d2d8fba42..5892f0f48 100644 --- a/nova/virt/xenapi/power_state.py +++ b/nova/virt/xenapi/power_state.py @@ -23,4 +23,3 @@ XENAPI_POWER_STATE = { 'Paused': power_state.PAUSED, 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} - \ No newline at end of file -- cgit From b6bed02342ac716b3cb3847fb54b5f285995f3b7 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Sun, 28 Nov 2010 01:49:28 +0000 Subject: further refactoring --- nova/virt/xenapi.py | 15 +- nova/virt/xenapi/network_utils.py | 52 +++++ nova/virt/xenapi/vm_utils.py | 206 ++++++++++++++++++ nova/virt/xenapi/vmops.py | 126 +++++++++++ nova/virt/xenapi/xenapi.py | 439 -------------------------------------- 5 files changed, 391 insertions(+), 447 deletions(-) create mode 100644 nova/virt/xenapi/network_utils.py create mode 100644 nova/virt/xenapi/vm_utils.py create mode 100644 nova/virt/xenapi/vmops.py delete mode 100644 nova/virt/xenapi/xenapi.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index a17894c84..2f2cef75e 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -54,7 +54,6 @@ from twisted.internet import defer from twisted.internet import reactor from twisted.internet import task -from xenapi import power_state from xenapi import VMOps from xenapi import VolumeOps @@ -138,8 +137,11 @@ class XenAPISession(object): self._session = XenAPI.Session(url) self._session.login_with_password(user, pw) - def get_session(self): - return self._session + def get_xenapi(self): + return self._session.xenapi + + def get_xenapi_host(self): + return self._session.xenapi.session.get_this_host(self._session.handle) @utils.deferredToThread def call_xenapi(self, method, *args): @@ -149,17 +151,14 @@ class XenAPISession(object): for m in method.split('.'): f = f.__getattr__(m) return f(*args) - + @utils.deferredToThread def async_call_plugin(self, plugin, fn, args): """Call Async.host.call_plugin on a background thread. Returns a Deferred with the task reference.""" return _unwrap_plugin_exceptions( self._session.xenapi.Async.host.call_plugin, - self._get_xenapi_host(), plugin, fn, args) - - def get_xenapi_host(self): - return self._session.xenapi.session.get_this_host(self._session.handle) + self.get_xenapi_host(), plugin, fn, args) def wait_for_task(self, task): """Return a Deferred that will give the result of the given task. diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py new file mode 100644 index 000000000..e062f916f --- /dev/null +++ b/nova/virt/xenapi/network_utils.py @@ -0,0 +1,52 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of network records and +their attributes like bridges, PIFs, QoS, as well as their lookup functions. +""" + +import logging +import xmlrpclib + +from twisted.internet import defer +from twisted.internet import reactor +from twisted.internet import task + +from nova import db +from nova import flags +from nova import process +from nova import utils +from nova.auth.manager import AuthManager # wrap this one +from nova.compute import instance_types # wrap this one +from nova.virt import images # wrap this one + +import power_state + + +class NetworkHelper(): + @classmethod + @defer.inlineCallbacks + def find_network_with_bridge(self, session, bridge): + expr = 'field "bridge" = "%s"' % bridge + networks = yield session.call_xenapi('network.get_all_records_where', + expr) + if len(networks) == 1: + defer.returnValue(networks.keys()[0]) + elif len(networks) > 1: + raise Exception('Found non-unique network for bridge %s' % bridge) + else: + raise Exception('Found no network for bridge %s' % bridge) \ No newline at end of file diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py new file mode 100644 index 000000000..6fb409b26 --- /dev/null +++ b/nova/virt/xenapi/vm_utils.py @@ -0,0 +1,206 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of VM records and +their attributes like VDIs, VIFs, as well as their lookup functions. +""" + +import logging +import xmlrpclib + +from twisted.internet import defer +from twisted.internet import reactor +from twisted.internet import task + +from nova import db +from nova import flags +from nova import process +from nova import utils +from nova.auth.manager import AuthManager # wrap this one +from nova.compute import instance_types # wrap this one +from nova.virt import images # wrap this one + +import power_state + + +class VMHelper(): + @classmethod + @defer.inlineCallbacks + def create_vm(self, session, instance, kernel, ramdisk): + """Create a VM record. Returns a Deferred that gives the new + VM reference.""" + + instance_type = instance_types.INSTANCE_TYPES[instance.instance_type] + mem = str(long(instance_type['memory_mb']) * 1024 * 1024) + vcpus = str(instance_type['vcpus']) + rec = { + 'name_label': instance.name, + 'name_description': '', + 'is_a_template': False, + 'memory_static_min': '0', + 'memory_static_max': mem, + 'memory_dynamic_min': mem, + 'memory_dynamic_max': mem, + 'VCPUs_at_startup': vcpus, + 'VCPUs_max': vcpus, + 'VCPUs_params': {}, + 'actions_after_shutdown': 'destroy', + 'actions_after_reboot': 'restart', + 'actions_after_crash': 'destroy', + 'PV_bootloader': '', + 'PV_kernel': kernel, + 'PV_ramdisk': ramdisk, + 'PV_args': 'root=/dev/xvda1', + 'PV_bootloader_args': '', + 'PV_legacy_args': '', + 'HVM_boot_policy': '', + 'HVM_boot_params': {}, + 'platform': {}, + 'PCI_bus': '', + 'recommendations': '', + 'affinity': '', + 'user_version': '0', + 'other_config': {}, + } + logging.debug('Created VM %s...', instance.name) + vm_ref = yield session.call_xenapi('VM.create', rec) + logging.debug('Created VM %s as %s.', instance.name, vm_ref) + defer.returnValue(vm_ref) + + @classmethod + @defer.inlineCallbacks + def create_vbd(self, session, vm_ref, vdi_ref, userdevice, bootable): + """Create a VBD record. Returns a Deferred that gives the new + VBD reference.""" + + vbd_rec = {} + vbd_rec['VM'] = vm_ref + vbd_rec['VDI'] = vdi_ref + vbd_rec['userdevice'] = str(userdevice) + vbd_rec['bootable'] = bootable + vbd_rec['mode'] = 'RW' + vbd_rec['type'] = 'disk' + vbd_rec['unpluggable'] = True + vbd_rec['empty'] = False + vbd_rec['other_config'] = {} + vbd_rec['qos_algorithm_type'] = '' + vbd_rec['qos_algorithm_params'] = {} + vbd_rec['qos_supported_algorithms'] = [] + logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) + vbd_ref = yield session.call_xenapi('VBD.create', vbd_rec) + logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, + vdi_ref) + defer.returnValue(vbd_ref) + + @classmethod + @defer.inlineCallbacks + def create_vif(self, session, vm_ref, network_ref, mac_address): + """Create a VIF record. Returns a Deferred that gives the new + VIF reference.""" + + vif_rec = {} + vif_rec['device'] = '0' + vif_rec['network'] = network_ref + vif_rec['VM'] = vm_ref + vif_rec['MAC'] = mac_address + vif_rec['MTU'] = '1500' + vif_rec['other_config'] = {} + vif_rec['qos_algorithm_type'] = '' + vif_rec['qos_algorithm_params'] = {} + logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, + network_ref) + vif_ref = yield session.call_xenapi('VIF.create', vif_rec) + logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, + vm_ref, network_ref) + defer.returnValue(vif_ref) + + @classmethod + @defer.inlineCallbacks + def find_network_with_bridge(self, session, bridge): + expr = 'field "bridge" = "%s"' % bridge + networks = yield session.call_xenapi('network.get_all_records_where', + expr) + if len(networks) == 1: + defer.returnValue(networks.keys()[0]) + elif len(networks) > 1: + raise Exception('Found non-unique network for bridge %s' % bridge) + else: + raise Exception('Found no network for bridge %s' % bridge) + + @classmethod + @defer.inlineCallbacks + def fetch_image(self, session, image, user, project, use_sr): + """use_sr: True to put the image as a VDI in an SR, False to place + it on dom0's filesystem. The former is for VM disks, the latter for + its kernel and ramdisk (if external kernels are being used). + Returns a Deferred that gives the new VDI UUID.""" + + url = images.image_url(image) + access = AuthManager().get_access_key(user, project) + logging.debug("Asking xapi to fetch %s as %s" % (url, access)) + fn = use_sr and 'get_vdi' or 'get_kernel' + args = {} + args['src_url'] = url + args['username'] = access + args['password'] = user.secret + if use_sr: + args['add_partition'] = 'true' + task = yield session.async_call_plugin('objectstore', fn, args) + uuid = yield session.wait_for_task(task) + defer.returnValue(uuid) + + @classmethod + @utils.deferredToThread + def lookup(self, session, i): + return VMHelper.lookup_blocking(i) + + @classmethod + def lookup_blocking(self, session, i): + vms = session.get_xenapi().VM.get_by_name_label(i) + n = len(vms) + if n == 0: + return None + elif n > 1: + raise Exception('duplicate name found: %s' % i) + else: + return vms[0] + + @classmethod + @utils.deferredToThread + def lookup_vm_vdis(self, session, vm): + return VMHelper.lookup_vm_vdis_blocking(session, vm) + + @classmethod + def lookup_vm_vdis_blocking(self, session, vm): + # Firstly we get the VBDs, then the VDIs. + # TODO: do we leave the read-only devices? + vbds = session.get_xenapi().VM.get_VBDs(vm) + vdis = [] + if vbds: + for vbd in vbds: + try: + vdi = session.get_xenapi().VBD.get_VDI(vbd) + # Test valid VDI + record = session.get_xenapi().VDI.get_record(vdi) + except Exception, exc: + logging.warn(exc) + else: + vdis.append(vdi) + if len(vdis) > 0: + return vdis + else: + return None \ No newline at end of file diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py new file mode 100644 index 000000000..03b7fc614 --- /dev/null +++ b/nova/virt/xenapi/vmops.py @@ -0,0 +1,126 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Management class for VM-related functions (spawn, reboot, etc). +""" + +import logging +import xmlrpclib + +from twisted.internet import defer +from twisted.internet import reactor +from twisted.internet import task + +from nova import db +from nova import flags +from nova import process +from nova import utils +from nova.auth.manager import AuthManager # wrap this one +from nova.compute import instance_types # wrap this one +from nova.virt import images # wrap this one + +import power_state +import VMHelper +import NetworkHelper + + +class VMOps(object): + def __init__(self, session): + self._session = session + + def list_instances(self): + return [self._session.get_xenapi().VM.get_name_label(vm) \ + for vm in self._session.get_xenapi().VM.get_all()] + + @defer.inlineCallbacks + def spawn(self, instance): + vm = yield VMHelper.lookup(self._session, instance.name) + if vm is not None: + raise Exception('Attempted to create non-unique name %s' % + instance.name) + + network = db.project_get_network(None, instance.project_id) + network_ref = \ + yield NetworkHelper.find_network_with_bridge(self._session, network.bridge) + + user = AuthManager().get_user(instance.user_id) + project = AuthManager().get_project(instance.project_id) + vdi_uuid = yield VMHelper.fetch_image(self._session, + instance.image_id, user, project, True) + kernel = yield VMHelper.fetch_image(self._session, + instance.kernel_id, user, project, False) + ramdisk = yield VMHelper.fetch_image(self._session, + instance.ramdisk_id, user, project, False) + vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) + + vm_ref = yield VMHelper.create_vm(self._session, instance, kernel, ramdisk) + yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) + if network_ref: + yield VMHelper.create_vif(self._session, vm_ref, network_ref, instance.mac_address) + logging.debug('Starting VM %s...', vm_ref) + yield self._session.call_xenapi('VM.start', vm_ref, False, False) + logging.info('Spawning VM %s created %s.', instance.name, vm_ref) + + @defer.inlineCallbacks + def reboot(self, instance): + vm = yield VMHelper.lookup(self._session, instance.name) + if vm is None: + raise Exception('instance not present %s' % instance.name) + task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) + yield self._session.wait_for_task(task) + + @defer.inlineCallbacks + def destroy(self, instance): + vm = yield VMHelper.lookup(self._session, instance.name) + if vm is None: + # Don't complain, just return. This lets us clean up instances + # that have already disappeared from the underlying platform. + defer.returnValue(None) + # Get the VDIs related to the VM + vdis = yield VMHelper.lookup_vm_vdis(self._session, vm) + try: + task = yield self._session.call_xenapi('Async.VM.hard_shutdown', vm) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + # Disk clean-up + if vdis: + for vdi in vdis: + try: + task = yield self._session.call_xenapi('Async.VDI.destroy', vdi) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + try: + task = yield self._session.call_xenapi('Async.VM.destroy', vm) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + + def get_info(self, instance_id): + vm = VMHelper.lookup_blocking(self._session, instance_id) + if vm is None: + raise Exception('instance not present %s' % instance_id) + rec = self._session.get_xenapi().VM.get_record(vm) + return {'state': XENAPI_POWER_STATE[rec['power_state']], + 'max_mem': long(rec['memory_static_max']) >> 10, + 'mem': long(rec['memory_dynamic_max']) >> 10, + 'num_cpu': rec['VCPUs_max'], + 'cpu_time': 0} + + def get_console_output(self, instance): + return 'FAKE CONSOLE OUTPUT' \ No newline at end of file diff --git a/nova/virt/xenapi/xenapi.py b/nova/virt/xenapi/xenapi.py deleted file mode 100644 index ddbef4303..000000000 --- a/nova/virt/xenapi/xenapi.py +++ /dev/null @@ -1,439 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -A connection to XenServer or Xen Cloud Platform. - -The concurrency model for this class is as follows: - -All XenAPI calls are on a thread (using t.i.t.deferToThread, via the decorator -deferredToThread). They are remote calls, and so may hang for the usual -reasons. They should not be allowed to block the reactor thread. - -All long-running XenAPI calls (VM.start, VM.reboot, etc) are called async -(using XenAPI.VM.async_start etc). These return a task, which can then be -polled for completion. Polling is handled using reactor.callLater. - -This combination of techniques means that we don't block the reactor thread at -all, and at the same time we don't hold lots of threads waiting for -long-running operations. - -FIXME: get_info currently doesn't conform to these rules, and will block the -reactor thread if the VM.get_by_name_label or VM.get_record calls block. - -**Related Flags** - -:xenapi_connection_url: URL for connection to XenServer/Xen Cloud Platform. -:xenapi_connection_username: Username for connection to XenServer/Xen Cloud - Platform (default: root). -:xenapi_connection_password: Password for connection to XenServer/Xen Cloud - Platform. -:xenapi_task_poll_interval: The interval (seconds) used for polling of - remote tasks (Async.VM.start, etc) - (default: 0.5). - -""" - -import logging -import xmlrpclib - -from twisted.internet import defer -from twisted.internet import reactor -from twisted.internet import task - -from nova import db -from nova import flags -from nova import process -from nova import utils -from nova.auth.manager import AuthManager # wrap this one -from nova.compute import instance_types # wrap this one -from xenapi import power_state -from nova.virt import images # wrap this one - -XenAPI = None - - -FLAGS = flags.FLAGS -flags.DEFINE_string('xenapi_connection_url', - None, - 'URL for connection to XenServer/Xen Cloud Platform.' - ' Required if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_username', - 'root', - 'Username for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_password', - None, - 'Password for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_float('xenapi_task_poll_interval', - 0.5, - 'The interval used for polling of remote tasks ' - '(Async.VM.start, etc). Used only if ' - 'connection_type=xenapi.') - - -def get_connection(_): - """Note that XenAPI doesn't have a read-only connection mode, so - the read_only parameter is ignored.""" - # This is loaded late so that there's no need to install this - # library when not using XenAPI. - global XenAPI - if XenAPI is None: - XenAPI = __import__('XenAPI') - url = FLAGS.xenapi_connection_url - username = FLAGS.xenapi_connection_username - password = FLAGS.xenapi_connection_password - if not url or password is None: - raise Exception('Must specify xenapi_connection_url, ' - 'xenapi_connection_username (optionally), and ' - 'xenapi_connection_password to use ' - 'connection_type=xenapi') - return XenAPIConnection(url, username, password) - - -class XenAPISession(object): - def __init__(self, url, user, pw): - self._session = XenAPI.Session(url) - self._session.login_with_password(user, pw) - - def session(self): - return self._session - - def list_instances(self): - return [self._session.xenapi.VM.get_name_label(vm) \ - for vm in self._session.xenapi.VM.get_all()] - - @defer.inlineCallbacks - def spawn(self, instance): - vm = yield self._lookup(instance.name) - if vm is not None: - raise Exception('Attempted to create non-unique name %s' % - instance.name) - - network = db.project_get_network(None, instance.project_id) - network_ref = \ - yield self._find_network_with_bridge(network.bridge) - - user = AuthManager().get_user(instance.user_id) - project = AuthManager().get_project(instance.project_id) - vdi_uuid = yield self._fetch_image( - instance.image_id, user, project, True) - kernel = yield self._fetch_image( - instance.kernel_id, user, project, False) - ramdisk = yield self._fetch_image( - instance.ramdisk_id, user, project, False) - vdi_ref = yield self._call_xenapi('VDI.get_by_uuid', vdi_uuid) - - vm_ref = yield self._create_vm(instance, kernel, ramdisk) - yield self._create_vbd(vm_ref, vdi_ref, 0, True) - if network_ref: - yield self._create_vif(vm_ref, network_ref, instance.mac_address) - logging.debug('Starting VM %s...', vm_ref) - yield self._call_xenapi('VM.start', vm_ref, False, False) - logging.info('Spawning VM %s created %s.', instance.name, vm_ref) - - @defer.inlineCallbacks - def _create_vm(self, instance, kernel, ramdisk): - """Create a VM record. Returns a Deferred that gives the new - VM reference.""" - - instance_type = instance_types.INSTANCE_TYPES[instance.instance_type] - mem = str(long(instance_type['memory_mb']) * 1024 * 1024) - vcpus = str(instance_type['vcpus']) - rec = { - 'name_label': instance.name, - 'name_description': '', - 'is_a_template': False, - 'memory_static_min': '0', - 'memory_static_max': mem, - 'memory_dynamic_min': mem, - 'memory_dynamic_max': mem, - 'VCPUs_at_startup': vcpus, - 'VCPUs_max': vcpus, - 'VCPUs_params': {}, - 'actions_after_shutdown': 'destroy', - 'actions_after_reboot': 'restart', - 'actions_after_crash': 'destroy', - 'PV_bootloader': '', - 'PV_kernel': kernel, - 'PV_ramdisk': ramdisk, - 'PV_args': 'root=/dev/xvda1', - 'PV_bootloader_args': '', - 'PV_legacy_args': '', - 'HVM_boot_policy': '', - 'HVM_boot_params': {}, - 'platform': {}, - 'PCI_bus': '', - 'recommendations': '', - 'affinity': '', - 'user_version': '0', - 'other_config': {}, - } - logging.debug('Created VM %s...', instance.name) - vm_ref = yield self._call_xenapi('VM.create', rec) - logging.debug('Created VM %s as %s.', instance.name, vm_ref) - defer.returnValue(vm_ref) - - @defer.inlineCallbacks - def _create_vbd(self, vm_ref, vdi_ref, userdevice, bootable): - """Create a VBD record. Returns a Deferred that gives the new - VBD reference.""" - - vbd_rec = {} - vbd_rec['VM'] = vm_ref - vbd_rec['VDI'] = vdi_ref - vbd_rec['userdevice'] = str(userdevice) - vbd_rec['bootable'] = bootable - vbd_rec['mode'] = 'RW' - vbd_rec['type'] = 'disk' - vbd_rec['unpluggable'] = True - vbd_rec['empty'] = False - vbd_rec['other_config'] = {} - vbd_rec['qos_algorithm_type'] = '' - vbd_rec['qos_algorithm_params'] = {} - vbd_rec['qos_supported_algorithms'] = [] - logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) - vbd_ref = yield self._call_xenapi('VBD.create', vbd_rec) - logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, - vdi_ref) - defer.returnValue(vbd_ref) - - @defer.inlineCallbacks - def _create_vif(self, vm_ref, network_ref, mac_address): - """Create a VIF record. Returns a Deferred that gives the new - VIF reference.""" - - vif_rec = {} - vif_rec['device'] = '0' - vif_rec['network'] = network_ref - vif_rec['VM'] = vm_ref - vif_rec['MAC'] = mac_address - vif_rec['MTU'] = '1500' - vif_rec['other_config'] = {} - vif_rec['qos_algorithm_type'] = '' - vif_rec['qos_algorithm_params'] = {} - logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, - network_ref) - vif_ref = yield self._call_xenapi('VIF.create', vif_rec) - logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, - vm_ref, network_ref) - defer.returnValue(vif_ref) - - @defer.inlineCallbacks - def _find_network_with_bridge(self, bridge): - expr = 'field "bridge" = "%s"' % bridge - networks = yield self._call_xenapi('network.get_all_records_where', - expr) - if len(networks) == 1: - defer.returnValue(networks.keys()[0]) - elif len(networks) > 1: - raise Exception('Found non-unique network for bridge %s' % bridge) - else: - raise Exception('Found no network for bridge %s' % bridge) - - @defer.inlineCallbacks - def _fetch_image(self, image, user, project, use_sr): - """use_sr: True to put the image as a VDI in an SR, False to place - it on dom0's filesystem. The former is for VM disks, the latter for - its kernel and ramdisk (if external kernels are being used). - Returns a Deferred that gives the new VDI UUID.""" - - url = images.image_url(image) - access = AuthManager().get_access_key(user, project) - logging.debug("Asking xapi to fetch %s as %s" % (url, access)) - fn = use_sr and 'get_vdi' or 'get_kernel' - args = {} - args['src_url'] = url - args['username'] = access - args['password'] = user.secret - if use_sr: - args['add_partition'] = 'true' - task = yield self._async_call_plugin('objectstore', fn, args) - uuid = yield self._wait_for_task(task) - defer.returnValue(uuid) - - @defer.inlineCallbacks - def reboot(self, instance): - vm = yield self._lookup(instance.name) - if vm is None: - raise Exception('instance not present %s' % instance.name) - task = yield self._call_xenapi('Async.VM.clean_reboot', vm) - yield self._wait_for_task(task) - - @defer.inlineCallbacks - def destroy(self, instance): - vm = yield self._lookup(instance.name) - if vm is None: - # Don't complain, just return. This lets us clean up instances - # that have already disappeared from the underlying platform. - defer.returnValue(None) - # Get the VDIs related to the VM - vdis = yield self._lookup_vm_vdis(vm) - try: - task = yield self._call_xenapi('Async.VM.hard_shutdown', vm) - yield self._wait_for_task(task) - except Exception, exc: - logging.warn(exc) - # Disk clean-up - if vdis: - for vdi in vdis: - try: - task = yield self._call_xenapi('Async.VDI.destroy', vdi) - yield self._wait_for_task(task) - except Exception, exc: - logging.warn(exc) - try: - task = yield self._call_xenapi('Async.VM.destroy', vm) - yield self._wait_for_task(task) - except Exception, exc: - logging.warn(exc) - - def get_info(self, instance_id): - vm = self._lookup_blocking(instance_id) - if vm is None: - raise Exception('instance not present %s' % instance_id) - rec = self._session.xenapi.VM.get_record(vm) - return {'state': XENAPI_POWER_STATE[rec['power_state']], - 'max_mem': long(rec['memory_static_max']) >> 10, - 'mem': long(rec['memory_dynamic_max']) >> 10, - 'num_cpu': rec['VCPUs_max'], - 'cpu_time': 0} - - def get_console_output(self, instance): - return 'FAKE CONSOLE OUTPUT' - - @utils.deferredToThread - def _lookup(self, i): - return self._lookup_blocking(i) - - def _lookup_blocking(self, i): - vms = self._session.xenapi.VM.get_by_name_label(i) - n = len(vms) - if n == 0: - return None - elif n > 1: - raise Exception('duplicate name found: %s' % i) - else: - return vms[0] - - @utils.deferredToThread - def _lookup_vm_vdis(self, vm): - return self._lookup_vm_vdis_blocking(vm) - - def _lookup_vm_vdis_blocking(self, vm): - # Firstly we get the VBDs, then the VDIs. - # TODO: do we leave the read-only devices? - vbds = self._session.xenapi.VM.get_VBDs(vm) - vdis = [] - if vbds: - for vbd in vbds: - try: - vdi = self._session.xenapi.VBD.get_VDI(vbd) - # Test valid VDI - record = self._session.xenapi.VDI.get_record(vdi) - except Exception, exc: - logging.warn(exc) - else: - vdis.append(vdi) - if len(vdis) > 0: - return vdis - else: - return None - - def _wait_for_task(self, task): - """Return a Deferred that will give the result of the given task. - The task is polled until it completes.""" - d = defer.Deferred() - reactor.callLater(0, self._poll_task, task, d) - return d - - @utils.deferredToThread - def _poll_task(self, task, deferred): - """Poll the given XenAPI task, and fire the given Deferred if we - get a result.""" - try: - #logging.debug('Polling task %s...', task) - status = self._session.xenapi.task.get_status(task) - if status == 'pending': - reactor.callLater(FLAGS.xenapi_task_poll_interval, - self._poll_task, task, deferred) - elif status == 'success': - result = self._session.xenapi.task.get_result(task) - logging.info('Task %s status: success. %s', task, result) - deferred.callback(_parse_xmlrpc_value(result)) - else: - error_info = self._session.xenapi.task.get_error_info(task) - logging.warn('Task %s status: %s. %s', task, status, - error_info) - deferred.errback(XenAPI.Failure(error_info)) - #logging.debug('Polling task %s done.', task) - except Exception, exc: - logging.warn(exc) - deferred.errback(exc) - - @utils.deferredToThread - def _call_xenapi(self, method, *args): - """Call the specified XenAPI method on a background thread. Returns - a Deferred for the result.""" - f = self._session.xenapi - for m in method.split('.'): - f = f.__getattr__(m) - return f(*args) - - @utils.deferredToThread - def _async_call_plugin(self, plugin, fn, args): - """Call Async.host.call_plugin on a background thread. Returns a - Deferred with the task reference.""" - return _unwrap_plugin_exceptions( - self._session.xenapi.Async.host.call_plugin, - self._get_xenapi_host(), plugin, fn, args) - - def _get_xenapi_host(self): - return self._session.xenapi.session.get_this_host(self._session.handle) - - -def _unwrap_plugin_exceptions(func, *args, **kwargs): - try: - return func(*args, **kwargs) - except XenAPI.Failure, exc: - logging.debug("Got exception: %s", exc) - if (len(exc.details) == 4 and - exc.details[0] == 'XENAPI_PLUGIN_EXCEPTION' and - exc.details[2] == 'Failure'): - params = None - try: - params = eval(exc.details[3]) - except: - raise exc - raise XenAPI.Failure(params) - else: - raise - except xmlrpclib.ProtocolError, exc: - logging.debug("Got exception: %s", exc) - raise - - -def _parse_xmlrpc_value(val): - """Parse the given value as if it were an XML-RPC value. This is - sometimes used as the format for the task.result field.""" - if not val: - return val - x = xmlrpclib.loads( - '' + - val + - '') - return x[0][0] -- cgit From c10a6f3e97a5871ac0cdce97bde89b3cee59d336 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Sun, 28 Nov 2010 15:12:37 +0000 Subject: other round of refactoring --- nova/virt/xenapi/novadeps.py | 97 +++++++++++++++++++++++++++++++++++++++++ nova/virt/xenapi/power_state.py | 25 ----------- nova/virt/xenapi/vm_utils.py | 32 ++++---------- nova/virt/xenapi/vmops.py | 43 +++++++++--------- nova/virt/xenapi/volumeops.py | 35 +++++++++++++++ 5 files changed, 161 insertions(+), 71 deletions(-) create mode 100644 nova/virt/xenapi/novadeps.py delete mode 100644 nova/virt/xenapi/power_state.py create mode 100644 nova/virt/xenapi/volumeops.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py new file mode 100644 index 000000000..a4e512263 --- /dev/null +++ b/nova/virt/xenapi/novadeps.py @@ -0,0 +1,97 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from nova import db +from nova import flags +from nova import process +from nova import utils + +from nova.compute import power_state +from nova.auth.manager import AuthManager +from nova.compute import instance_types +from nova.virt import images + +XENAPI_POWER_STATE = { + 'Halted': power_state.SHUTDOWN, + 'Running': power_state.RUNNING, + 'Paused': power_state.PAUSED, + 'Suspended': power_state.SHUTDOWN, # FIXME + 'Crashed': power_state.CRASHED} + +class Instance(object): + + @classmethod + def get_name(self, instance): + return instance.name + + @classmethod + def get_type(self, instance): + return instance_types.INSTANCE_TYPES[instance.instance_type] + + @classmethod + def get_project(self, instance): + return AuthManager().get_project(instance.project_id) + + @classmethod + def get_project_id(self, instance): + return instance.project_id + + @classmethod + def get_image_id(self, instance): + return instance.image_id + + @classmethod + def get_kernel_id(self, instance): + return instance.kernel_id + + @classmethod + def get_ramdisk_id(self, instance): + return instance.ramdisk_id + + @classmethod + def get_network(self, instance): + return db.project_get_network(None, instance.project_id) + + @classmethod + def get_mac(self, instance): + return instance.mac_address + + @classmethod + def get_user(self, instance): + return AuthManager().get_user(instance.user_id) + + +class Network(object): + + @classmethod + def get_bridge(self, network): + return network.bridge + +class Image(object): + + @classmethod + def get_url(self, image): + return images.image_url(image) + +class User(object): + + @classmethod + def get_access(self, user, project): + return AuthManager().get_access_key(user, project) + + @classmethod + def get_secret(self, user): + return user.secret \ No newline at end of file diff --git a/nova/virt/xenapi/power_state.py b/nova/virt/xenapi/power_state.py deleted file mode 100644 index 5892f0f48..000000000 --- a/nova/virt/xenapi/power_state.py +++ /dev/null @@ -1,25 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -from nova.compute import power_state - - -XENAPI_POWER_STATE = { - 'Halted': power_state.SHUTDOWN, - 'Running': power_state.RUNNING, - 'Paused': power_state.PAUSED, - 'Suspended': power_state.SHUTDOWN, # FIXME - 'Crashed': power_state.CRASHED} diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 6fb409b26..8329f0d7e 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -30,11 +30,10 @@ from nova import db from nova import flags from nova import process from nova import utils -from nova.auth.manager import AuthManager # wrap this one -from nova.compute import instance_types # wrap this one -from nova.virt import images # wrap this one -import power_state +from novadeps import Instance +from novadeps import Image +from novadeps import User class VMHelper(): @@ -44,7 +43,7 @@ class VMHelper(): """Create a VM record. Returns a Deferred that gives the new VM reference.""" - instance_type = instance_types.INSTANCE_TYPES[instance.instance_type] + instance_type = Instance.get_type(instance) mem = str(long(instance_type['memory_mb']) * 1024 * 1024) vcpus = str(instance_type['vcpus']) rec = { @@ -76,9 +75,9 @@ class VMHelper(): 'user_version': '0', 'other_config': {}, } - logging.debug('Created VM %s...', instance.name) + logging.debug('Created VM %s...', Instance.get_name(instance)) vm_ref = yield session.call_xenapi('VM.create', rec) - logging.debug('Created VM %s as %s.', instance.name, vm_ref) + logging.debug('Created VM %s as %s.', Instance.get_name(instance), vm_ref) defer.returnValue(vm_ref) @classmethod @@ -128,19 +127,6 @@ class VMHelper(): vm_ref, network_ref) defer.returnValue(vif_ref) - @classmethod - @defer.inlineCallbacks - def find_network_with_bridge(self, session, bridge): - expr = 'field "bridge" = "%s"' % bridge - networks = yield session.call_xenapi('network.get_all_records_where', - expr) - if len(networks) == 1: - defer.returnValue(networks.keys()[0]) - elif len(networks) > 1: - raise Exception('Found non-unique network for bridge %s' % bridge) - else: - raise Exception('Found no network for bridge %s' % bridge) - @classmethod @defer.inlineCallbacks def fetch_image(self, session, image, user, project, use_sr): @@ -149,14 +135,14 @@ class VMHelper(): its kernel and ramdisk (if external kernels are being used). Returns a Deferred that gives the new VDI UUID.""" - url = images.image_url(image) - access = AuthManager().get_access_key(user, project) + url = Image.get_url(image) + access = User.get_access(user, project) logging.debug("Asking xapi to fetch %s as %s" % (url, access)) fn = use_sr and 'get_vdi' or 'get_kernel' args = {} args['src_url'] = url args['username'] = access - args['password'] = user.secret + args['password'] = User.get_secret(user) if use_sr: args['add_partition'] = 'true' task = yield session.async_call_plugin('objectstore', fn, args) diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 03b7fc614..abb422502 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -25,18 +25,14 @@ from twisted.internet import defer from twisted.internet import reactor from twisted.internet import task -from nova import db -from nova import flags -from nova import process -from nova import utils -from nova.auth.manager import AuthManager # wrap this one -from nova.compute import instance_types # wrap this one -from nova.virt import images # wrap this one - -import power_state + import VMHelper import NetworkHelper +from novadeps import XENAPI_POWER_STATE +from novadeps import Auth +from novadeps import Instance +from novadeps import Network class VMOps(object): def __init__(self, session): @@ -48,44 +44,45 @@ class VMOps(object): @defer.inlineCallbacks def spawn(self, instance): - vm = yield VMHelper.lookup(self._session, instance.name) + vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) if vm is not None: raise Exception('Attempted to create non-unique name %s' % - instance.name) + Instance.get_name(instance)) - network = db.project_get_network(None, instance.project_id) + network = Instance.get_network(instance) network_ref = \ - yield NetworkHelper.find_network_with_bridge(self._session, network.bridge) + yield NetworkHelper.find_network_with_bridge(self._session, Network.get_bridge(network)) - user = AuthManager().get_user(instance.user_id) - project = AuthManager().get_project(instance.project_id) + user = Instance.get_user(instance) + project = Instance.get_project(instance) vdi_uuid = yield VMHelper.fetch_image(self._session, - instance.image_id, user, project, True) + Instance.get_image_id(instance), user, project, True) kernel = yield VMHelper.fetch_image(self._session, - instance.kernel_id, user, project, False) + Instance.get_kernel_id(instance), user, project, False) ramdisk = yield VMHelper.fetch_image(self._session, - instance.ramdisk_id, user, project, False) + Instance.get_ramdisk_id(instance), user, project, False) vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) vm_ref = yield VMHelper.create_vm(self._session, instance, kernel, ramdisk) yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) if network_ref: - yield VMHelper.create_vif(self._session, vm_ref, network_ref, instance.mac_address) + yield VMHelper.create_vif(self._session, vm_ref, network_ref, Instance.get_mac(instance)) logging.debug('Starting VM %s...', vm_ref) yield self._session.call_xenapi('VM.start', vm_ref, False, False) - logging.info('Spawning VM %s created %s.', instance.name, vm_ref) + logging.info('Spawning VM %s created %s.', Instance.get_name(instance), vm_ref) @defer.inlineCallbacks def reboot(self, instance): - vm = yield VMHelper.lookup(self._session, instance.name) + instance_name = Instance.get_name(instance) + vm = yield VMHelper.lookup(self._session, instance_name) if vm is None: - raise Exception('instance not present %s' % instance.name) + raise Exception('instance not present %s' % instance_name) task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) yield self._session.wait_for_task(task) @defer.inlineCallbacks def destroy(self, instance): - vm = yield VMHelper.lookup(self._session, instance.name) + vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) if vm is None: # Don't complain, just return. This lets us clean up instances # that have already disappeared from the underlying platform. diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py new file mode 100644 index 000000000..f5b43adfb --- /dev/null +++ b/nova/virt/xenapi/volumeops.py @@ -0,0 +1,35 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Management class for Storage-related functions (attach, detach, etc). +""" + +from twisted.internet import defer + +from nova import exception +from nova.compute import power_state + + +class VMOps(object): + def __init__(self, session): + self._session = session + + def attach_volume(self, instance_name, device_path, mountpoint): + return True + + def detach_volume(self, instance_name, mountpoint): + return True \ No newline at end of file -- cgit From 9d26ad69bfeb88106a08f0f3f1e15ed621c18af2 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 29 Nov 2010 10:25:52 +0000 Subject: first cut of the refactoring of the XenAPIConnection class. Currently the class merged both the code for managing the XenAPI connection and the business logic for implementing Nova operations. If left like this, it would eventually become difficult to read, maintain and extend. The file was getting kind of big and cluttered, so a quick refactoring now will save a lot of headaches later --- nova/virt/xenapi/network_utils.py | 10 ---------- nova/virt/xenapi/vm_utils.py | 2 +- nova/virt/xenapi/vmops.py | 1 - nova/virt/xenapi/volumeops.py | 5 ----- 4 files changed, 1 insertion(+), 17 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index e062f916f..83ade1389 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -25,16 +25,6 @@ import xmlrpclib from twisted.internet import defer from twisted.internet import reactor from twisted.internet import task - -from nova import db -from nova import flags -from nova import process -from nova import utils -from nova.auth.manager import AuthManager # wrap this one -from nova.compute import instance_types # wrap this one -from nova.virt import images # wrap this one - -import power_state class NetworkHelper(): diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 8329f0d7e..a1b444e41 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -152,7 +152,7 @@ class VMHelper(): @classmethod @utils.deferredToThread def lookup(self, session, i): - return VMHelper.lookup_blocking(i) + return VMHelper.lookup_blocking(session, i) @classmethod def lookup_blocking(self, session, i): diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index abb422502..c04a9f4ec 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -25,7 +25,6 @@ from twisted.internet import defer from twisted.internet import reactor from twisted.internet import task - import VMHelper import NetworkHelper diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index f5b43adfb..fd316a0b8 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -18,11 +18,6 @@ Management class for Storage-related functions (attach, detach, etc). """ -from twisted.internet import defer - -from nova import exception -from nova.compute import power_state - class VMOps(object): def __init__(self, session): -- cgit From 9e34c9c7dc88d9e361c7f2d05e06b53ff68ee53f Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 29 Nov 2010 12:52:03 +0000 Subject: fixed deps --- nova/virt/xapi/__init__.py | 15 +++ nova/virt/xapi/network_utils.py | 40 ++++++++ nova/virt/xapi/novadeps.py | 100 ++++++++++++++++++++ nova/virt/xapi/vm_utils.py | 190 +++++++++++++++++++++++++++++++++++++ nova/virt/xapi/vmops.py | 123 ++++++++++++++++++++++++ nova/virt/xapi/volumeops.py | 30 ++++++ nova/virt/xenapi.py | 11 ++- nova/virt/xenapi/network_utils.py | 42 --------- nova/virt/xenapi/novadeps.py | 97 ------------------- nova/virt/xenapi/vm_utils.py | 192 -------------------------------------- nova/virt/xenapi/vmops.py | 122 ------------------------ nova/virt/xenapi/volumeops.py | 30 ------ 12 files changed, 505 insertions(+), 487 deletions(-) create mode 100644 nova/virt/xapi/__init__.py create mode 100644 nova/virt/xapi/network_utils.py create mode 100644 nova/virt/xapi/novadeps.py create mode 100644 nova/virt/xapi/vm_utils.py create mode 100644 nova/virt/xapi/vmops.py create mode 100644 nova/virt/xapi/volumeops.py delete mode 100644 nova/virt/xenapi/network_utils.py delete mode 100644 nova/virt/xenapi/novadeps.py delete mode 100644 nova/virt/xenapi/vm_utils.py delete mode 100644 nova/virt/xenapi/vmops.py delete mode 100644 nova/virt/xenapi/volumeops.py (limited to 'nova/virt') diff --git a/nova/virt/xapi/__init__.py b/nova/virt/xapi/__init__.py new file mode 100644 index 000000000..3d598c463 --- /dev/null +++ b/nova/virt/xapi/__init__.py @@ -0,0 +1,15 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. diff --git a/nova/virt/xapi/network_utils.py b/nova/virt/xapi/network_utils.py new file mode 100644 index 000000000..b58b9159c --- /dev/null +++ b/nova/virt/xapi/network_utils.py @@ -0,0 +1,40 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of network records and +their attributes like bridges, PIFs, QoS, as well as their lookup functions. +""" + +from twisted.internet import defer + + +class NetworkHelper(): + def __init__(self, session): + return + + @classmethod + @defer.inlineCallbacks + def find_network_with_bridge(self, session, bridge): + expr = 'field "bridge" = "%s"' % bridge + networks = yield session.call_xenapi('network.get_all_records_where', + expr) + if len(networks) == 1: + defer.returnValue(networks.keys()[0]) + elif len(networks) > 1: + raise Exception('Found non-unique network for bridge %s' % bridge) + else: + raise Exception('Found no network for bridge %s' % bridge) diff --git a/nova/virt/xapi/novadeps.py b/nova/virt/xapi/novadeps.py new file mode 100644 index 000000000..8cb5e3246 --- /dev/null +++ b/nova/virt/xapi/novadeps.py @@ -0,0 +1,100 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from nova import db +from nova import flags +from nova import process +from nova import utils + +from nova.compute import power_state +from nova.auth.manager import AuthManager +from nova.compute import instance_types +from nova.virt import images + +XENAPI_POWER_STATE = { + 'Halted': power_state.SHUTDOWN, + 'Running': power_state.RUNNING, + 'Paused': power_state.PAUSED, + 'Suspended': power_state.SHUTDOWN, # FIXME + 'Crashed': power_state.CRASHED} + + +class Instance(object): + + @classmethod + def get_name(self, instance): + return instance.name + + @classmethod + def get_type(self, instance): + return instance_types.INSTANCE_TYPES[instance.instance_type] + + @classmethod + def get_project(self, instance): + return AuthManager().get_project(instance.project_id) + + @classmethod + def get_project_id(self, instance): + return instance.project_id + + @classmethod + def get_image_id(self, instance): + return instance.image_id + + @classmethod + def get_kernel_id(self, instance): + return instance.kernel_id + + @classmethod + def get_ramdisk_id(self, instance): + return instance.ramdisk_id + + @classmethod + def get_network(self, instance): + return db.project_get_network(None, instance.project_id) + + @classmethod + def get_mac(self, instance): + return instance.mac_address + + @classmethod + def get_user(self, instance): + return AuthManager().get_user(instance.user_id) + + +class Network(object): + + @classmethod + def get_bridge(self, network): + return network.bridge + + +class Image(object): + + @classmethod + def get_url(self, image): + return images.image_url(image) + + +class User(object): + + @classmethod + def get_access(self, user, project): + return AuthManager().get_access_key(user, project) + + @classmethod + def get_secret(self, user): + return user.secret diff --git a/nova/virt/xapi/vm_utils.py b/nova/virt/xapi/vm_utils.py new file mode 100644 index 000000000..41f687ccb --- /dev/null +++ b/nova/virt/xapi/vm_utils.py @@ -0,0 +1,190 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of VM records and +their attributes like VDIs, VIFs, as well as their lookup functions. +""" + +import logging + +from twisted.internet import defer + +from nova import utils + +from novadeps import Instance +from novadeps import Image +from novadeps import User + + +class VMHelper(): + def __init__(self, session): + return + + @classmethod + @defer.inlineCallbacks + def create_vm(self, session, instance, kernel, ramdisk): + """Create a VM record. Returns a Deferred that gives the new + VM reference.""" + + instance_type = Instance.get_type(instance) + mem = str(long(instance_type['memory_mb']) * 1024 * 1024) + vcpus = str(instance_type['vcpus']) + rec = { + 'name_label': instance.name, + 'name_description': '', + 'is_a_template': False, + 'memory_static_min': '0', + 'memory_static_max': mem, + 'memory_dynamic_min': mem, + 'memory_dynamic_max': mem, + 'VCPUs_at_startup': vcpus, + 'VCPUs_max': vcpus, + 'VCPUs_params': {}, + 'actions_after_shutdown': 'destroy', + 'actions_after_reboot': 'restart', + 'actions_after_crash': 'destroy', + 'PV_bootloader': '', + 'PV_kernel': kernel, + 'PV_ramdisk': ramdisk, + 'PV_args': 'root=/dev/xvda1', + 'PV_bootloader_args': '', + 'PV_legacy_args': '', + 'HVM_boot_policy': '', + 'HVM_boot_params': {}, + 'platform': {}, + 'PCI_bus': '', + 'recommendations': '', + 'affinity': '', + 'user_version': '0', + 'other_config': {}, + } + logging.debug('Created VM %s...', Instance.get_name(instance)) + vm_ref = yield session.call_xenapi('VM.create', rec) + logging.debug('Created VM %s as %s.', + Instance.get_name(instance), vm_ref) + defer.returnValue(vm_ref) + + @classmethod + @defer.inlineCallbacks + def create_vbd(self, session, vm_ref, vdi_ref, userdevice, bootable): + """Create a VBD record. Returns a Deferred that gives the new + VBD reference.""" + + vbd_rec = {} + vbd_rec['VM'] = vm_ref + vbd_rec['VDI'] = vdi_ref + vbd_rec['userdevice'] = str(userdevice) + vbd_rec['bootable'] = bootable + vbd_rec['mode'] = 'RW' + vbd_rec['type'] = 'disk' + vbd_rec['unpluggable'] = True + vbd_rec['empty'] = False + vbd_rec['other_config'] = {} + vbd_rec['qos_algorithm_type'] = '' + vbd_rec['qos_algorithm_params'] = {} + vbd_rec['qos_supported_algorithms'] = [] + logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) + vbd_ref = yield session.call_xenapi('VBD.create', vbd_rec) + logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, + vdi_ref) + defer.returnValue(vbd_ref) + + @classmethod + @defer.inlineCallbacks + def create_vif(self, session, vm_ref, network_ref, mac_address): + """Create a VIF record. Returns a Deferred that gives the new + VIF reference.""" + + vif_rec = {} + vif_rec['device'] = '0' + vif_rec['network'] = network_ref + vif_rec['VM'] = vm_ref + vif_rec['MAC'] = mac_address + vif_rec['MTU'] = '1500' + vif_rec['other_config'] = {} + vif_rec['qos_algorithm_type'] = '' + vif_rec['qos_algorithm_params'] = {} + logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, + network_ref) + vif_ref = yield session.call_xenapi('VIF.create', vif_rec) + logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, + vm_ref, network_ref) + defer.returnValue(vif_ref) + + @classmethod + @defer.inlineCallbacks + def fetch_image(self, session, image, user, project, use_sr): + """use_sr: True to put the image as a VDI in an SR, False to place + it on dom0's filesystem. The former is for VM disks, the latter for + its kernel and ramdisk (if external kernels are being used). + Returns a Deferred that gives the new VDI UUID.""" + + url = Image.get_url(image) + access = User.get_access(user, project) + logging.debug("Asking xapi to fetch %s as %s" % (url, access)) + fn = use_sr and 'get_vdi' or 'get_kernel' + args = {} + args['src_url'] = url + args['username'] = access + args['password'] = User.get_secret(user) + if use_sr: + args['add_partition'] = 'true' + task = yield session.async_call_plugin('objectstore', fn, args) + uuid = yield session.wait_for_task(task) + defer.returnValue(uuid) + + @classmethod + @utils.deferredToThread + def lookup(self, session, i): + return VMHelper.lookup_blocking(session, i) + + @classmethod + def lookup_blocking(self, session, i): + vms = session.get_xenapi().VM.get_by_name_label(i) + n = len(vms) + if n == 0: + return None + elif n > 1: + raise Exception('duplicate name found: %s' % i) + else: + return vms[0] + + @classmethod + @utils.deferredToThread + def lookup_vm_vdis(self, session, vm): + return VMHelper.lookup_vm_vdis_blocking(session, vm) + + @classmethod + def lookup_vm_vdis_blocking(self, session, vm): + # Firstly we get the VBDs, then the VDIs. + # TODO: do we leave the read-only devices? + vbds = session.get_xenapi().VM.get_VBDs(vm) + vdis = [] + if vbds: + for vbd in vbds: + try: + vdi = session.get_xenapi().VBD.get_VDI(vbd) + # Test valid VDI + record = session.get_xenapi().VDI.get_record(vdi) + except Exception, exc: + logging.warn(exc) + else: + vdis.append(vdi) + if len(vdis) > 0: + return vdis + else: + return None diff --git a/nova/virt/xapi/vmops.py b/nova/virt/xapi/vmops.py new file mode 100644 index 000000000..d6ea5e7db --- /dev/null +++ b/nova/virt/xapi/vmops.py @@ -0,0 +1,123 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Management class for VM-related functions (spawn, reboot, etc). +""" + +import logging + +from twisted.internet import defer + +from novadeps import XENAPI_POWER_STATE +from novadeps import Instance +from novadeps import Network + +from vm_utils import VMHelper +from network_utils import NetworkHelper + + +class VMOps(object): + def __init__(self, session): + self._session = session + + def list_instances(self): + return [self._session.get_xenapi().VM.get_name_label(vm) \ + for vm in self._session.get_xenapi().VM.get_all()] + + @defer.inlineCallbacks + def spawn(self, instance): + vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) + if vm is not None: + raise Exception('Attempted to create non-unique name %s' % + Instance.get_name(instance)) + + bridge = Network.get_bridge(Instance.get_network(instance)) + network_ref = \ + yield NetworkHelper.find_network_with_bridge(self._session, bridge) + + user = Instance.get_user(instance) + project = Instance.get_project(instance) + vdi_uuid = yield VMHelper.fetch_image(self._session, + Instance.get_image_id(instance), user, project, True) + kernel = yield VMHelper.fetch_image(self._session, + Instance.get_kernel_id(instance), user, project, False) + ramdisk = yield VMHelper.fetch_image(self._session, + Instance.get_ramdisk_id(instance), user, project, False) + vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) + vm_ref = yield VMHelper.create_vm(self._session, + instance, kernel, ramdisk) + yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) + if network_ref: + yield VMHelper.create_vif(self._session, vm_ref, + network_ref, Instance.get_mac(instance)) + logging.debug('Starting VM %s...', vm_ref) + yield self._session.call_xenapi('VM.start', vm_ref, False, False) + logging.info('Spawning VM %s created %s.', Instance.get_name(instance), + vm_ref) + + @defer.inlineCallbacks + def reboot(self, instance): + instance_name = Instance.get_name(instance) + vm = yield VMHelper.lookup(self._session, instance_name) + if vm is None: + raise Exception('instance not present %s' % instance_name) + task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) + yield self._session.wait_for_task(task) + + @defer.inlineCallbacks + def destroy(self, instance): + vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) + if vm is None: + # Don't complain, just return. This lets us clean up instances + # that have already disappeared from the underlying platform. + defer.returnValue(None) + # Get the VDIs related to the VM + vdis = yield VMHelper.lookup_vm_vdis(self._session, vm) + try: + task = yield self._session.call_xenapi('Async.VM.hard_shutdown', + vm) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + # Disk clean-up + if vdis: + for vdi in vdis: + try: + task = yield self._session.call_xenapi('Async.VDI.destroy', + vdi) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + try: + task = yield self._session.call_xenapi('Async.VM.destroy', vm) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + + def get_info(self, instance_id): + vm = VMHelper.lookup_blocking(self._session, instance_id) + if vm is None: + raise Exception('instance not present %s' % instance_id) + rec = self._session.get_xenapi().VM.get_record(vm) + return {'state': XENAPI_POWER_STATE[rec['power_state']], + 'max_mem': long(rec['memory_static_max']) >> 10, + 'mem': long(rec['memory_dynamic_max']) >> 10, + 'num_cpu': rec['VCPUs_max'], + 'cpu_time': 0} + + def get_console_output(self, instance): + return 'FAKE CONSOLE OUTPUT' diff --git a/nova/virt/xapi/volumeops.py b/nova/virt/xapi/volumeops.py new file mode 100644 index 000000000..23f79adf7 --- /dev/null +++ b/nova/virt/xapi/volumeops.py @@ -0,0 +1,30 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Management class for Storage-related functions (attach, detach, etc). +""" + + +class VolumeOps(object): + def __init__(self, session): + self._session = session + + def attach_volume(self, instance_name, device_path, mountpoint): + return True + + def detach_volume(self, instance_name, mountpoint): + return True diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 2f2cef75e..613f19f82 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -52,10 +52,13 @@ import xmlrpclib from twisted.internet import defer from twisted.internet import reactor -from twisted.internet import task +#from twisted.internet import task -from xenapi import VMOps -from xenapi import VolumeOps +from nova import flags +from nova import utils + +from xapi.vmops import VMOps +from xapi.volumeops import VolumeOps XenAPI = None @@ -151,7 +154,7 @@ class XenAPISession(object): for m in method.split('.'): f = f.__getattr__(m) return f(*args) - + @utils.deferredToThread def async_call_plugin(self, plugin, fn, args): """Call Async.host.call_plugin on a background thread. Returns a diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py deleted file mode 100644 index 83ade1389..000000000 --- a/nova/virt/xenapi/network_utils.py +++ /dev/null @@ -1,42 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Helper methods for operations related to the management of network records and -their attributes like bridges, PIFs, QoS, as well as their lookup functions. -""" - -import logging -import xmlrpclib - -from twisted.internet import defer -from twisted.internet import reactor -from twisted.internet import task - - -class NetworkHelper(): - @classmethod - @defer.inlineCallbacks - def find_network_with_bridge(self, session, bridge): - expr = 'field "bridge" = "%s"' % bridge - networks = yield session.call_xenapi('network.get_all_records_where', - expr) - if len(networks) == 1: - defer.returnValue(networks.keys()[0]) - elif len(networks) > 1: - raise Exception('Found non-unique network for bridge %s' % bridge) - else: - raise Exception('Found no network for bridge %s' % bridge) \ No newline at end of file diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py deleted file mode 100644 index a4e512263..000000000 --- a/nova/virt/xenapi/novadeps.py +++ /dev/null @@ -1,97 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -from nova import db -from nova import flags -from nova import process -from nova import utils - -from nova.compute import power_state -from nova.auth.manager import AuthManager -from nova.compute import instance_types -from nova.virt import images - -XENAPI_POWER_STATE = { - 'Halted': power_state.SHUTDOWN, - 'Running': power_state.RUNNING, - 'Paused': power_state.PAUSED, - 'Suspended': power_state.SHUTDOWN, # FIXME - 'Crashed': power_state.CRASHED} - -class Instance(object): - - @classmethod - def get_name(self, instance): - return instance.name - - @classmethod - def get_type(self, instance): - return instance_types.INSTANCE_TYPES[instance.instance_type] - - @classmethod - def get_project(self, instance): - return AuthManager().get_project(instance.project_id) - - @classmethod - def get_project_id(self, instance): - return instance.project_id - - @classmethod - def get_image_id(self, instance): - return instance.image_id - - @classmethod - def get_kernel_id(self, instance): - return instance.kernel_id - - @classmethod - def get_ramdisk_id(self, instance): - return instance.ramdisk_id - - @classmethod - def get_network(self, instance): - return db.project_get_network(None, instance.project_id) - - @classmethod - def get_mac(self, instance): - return instance.mac_address - - @classmethod - def get_user(self, instance): - return AuthManager().get_user(instance.user_id) - - -class Network(object): - - @classmethod - def get_bridge(self, network): - return network.bridge - -class Image(object): - - @classmethod - def get_url(self, image): - return images.image_url(image) - -class User(object): - - @classmethod - def get_access(self, user, project): - return AuthManager().get_access_key(user, project) - - @classmethod - def get_secret(self, user): - return user.secret \ No newline at end of file diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py deleted file mode 100644 index a1b444e41..000000000 --- a/nova/virt/xenapi/vm_utils.py +++ /dev/null @@ -1,192 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Helper methods for operations related to the management of VM records and -their attributes like VDIs, VIFs, as well as their lookup functions. -""" - -import logging -import xmlrpclib - -from twisted.internet import defer -from twisted.internet import reactor -from twisted.internet import task - -from nova import db -from nova import flags -from nova import process -from nova import utils - -from novadeps import Instance -from novadeps import Image -from novadeps import User - - -class VMHelper(): - @classmethod - @defer.inlineCallbacks - def create_vm(self, session, instance, kernel, ramdisk): - """Create a VM record. Returns a Deferred that gives the new - VM reference.""" - - instance_type = Instance.get_type(instance) - mem = str(long(instance_type['memory_mb']) * 1024 * 1024) - vcpus = str(instance_type['vcpus']) - rec = { - 'name_label': instance.name, - 'name_description': '', - 'is_a_template': False, - 'memory_static_min': '0', - 'memory_static_max': mem, - 'memory_dynamic_min': mem, - 'memory_dynamic_max': mem, - 'VCPUs_at_startup': vcpus, - 'VCPUs_max': vcpus, - 'VCPUs_params': {}, - 'actions_after_shutdown': 'destroy', - 'actions_after_reboot': 'restart', - 'actions_after_crash': 'destroy', - 'PV_bootloader': '', - 'PV_kernel': kernel, - 'PV_ramdisk': ramdisk, - 'PV_args': 'root=/dev/xvda1', - 'PV_bootloader_args': '', - 'PV_legacy_args': '', - 'HVM_boot_policy': '', - 'HVM_boot_params': {}, - 'platform': {}, - 'PCI_bus': '', - 'recommendations': '', - 'affinity': '', - 'user_version': '0', - 'other_config': {}, - } - logging.debug('Created VM %s...', Instance.get_name(instance)) - vm_ref = yield session.call_xenapi('VM.create', rec) - logging.debug('Created VM %s as %s.', Instance.get_name(instance), vm_ref) - defer.returnValue(vm_ref) - - @classmethod - @defer.inlineCallbacks - def create_vbd(self, session, vm_ref, vdi_ref, userdevice, bootable): - """Create a VBD record. Returns a Deferred that gives the new - VBD reference.""" - - vbd_rec = {} - vbd_rec['VM'] = vm_ref - vbd_rec['VDI'] = vdi_ref - vbd_rec['userdevice'] = str(userdevice) - vbd_rec['bootable'] = bootable - vbd_rec['mode'] = 'RW' - vbd_rec['type'] = 'disk' - vbd_rec['unpluggable'] = True - vbd_rec['empty'] = False - vbd_rec['other_config'] = {} - vbd_rec['qos_algorithm_type'] = '' - vbd_rec['qos_algorithm_params'] = {} - vbd_rec['qos_supported_algorithms'] = [] - logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) - vbd_ref = yield session.call_xenapi('VBD.create', vbd_rec) - logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, - vdi_ref) - defer.returnValue(vbd_ref) - - @classmethod - @defer.inlineCallbacks - def create_vif(self, session, vm_ref, network_ref, mac_address): - """Create a VIF record. Returns a Deferred that gives the new - VIF reference.""" - - vif_rec = {} - vif_rec['device'] = '0' - vif_rec['network'] = network_ref - vif_rec['VM'] = vm_ref - vif_rec['MAC'] = mac_address - vif_rec['MTU'] = '1500' - vif_rec['other_config'] = {} - vif_rec['qos_algorithm_type'] = '' - vif_rec['qos_algorithm_params'] = {} - logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, - network_ref) - vif_ref = yield session.call_xenapi('VIF.create', vif_rec) - logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, - vm_ref, network_ref) - defer.returnValue(vif_ref) - - @classmethod - @defer.inlineCallbacks - def fetch_image(self, session, image, user, project, use_sr): - """use_sr: True to put the image as a VDI in an SR, False to place - it on dom0's filesystem. The former is for VM disks, the latter for - its kernel and ramdisk (if external kernels are being used). - Returns a Deferred that gives the new VDI UUID.""" - - url = Image.get_url(image) - access = User.get_access(user, project) - logging.debug("Asking xapi to fetch %s as %s" % (url, access)) - fn = use_sr and 'get_vdi' or 'get_kernel' - args = {} - args['src_url'] = url - args['username'] = access - args['password'] = User.get_secret(user) - if use_sr: - args['add_partition'] = 'true' - task = yield session.async_call_plugin('objectstore', fn, args) - uuid = yield session.wait_for_task(task) - defer.returnValue(uuid) - - @classmethod - @utils.deferredToThread - def lookup(self, session, i): - return VMHelper.lookup_blocking(session, i) - - @classmethod - def lookup_blocking(self, session, i): - vms = session.get_xenapi().VM.get_by_name_label(i) - n = len(vms) - if n == 0: - return None - elif n > 1: - raise Exception('duplicate name found: %s' % i) - else: - return vms[0] - - @classmethod - @utils.deferredToThread - def lookup_vm_vdis(self, session, vm): - return VMHelper.lookup_vm_vdis_blocking(session, vm) - - @classmethod - def lookup_vm_vdis_blocking(self, session, vm): - # Firstly we get the VBDs, then the VDIs. - # TODO: do we leave the read-only devices? - vbds = session.get_xenapi().VM.get_VBDs(vm) - vdis = [] - if vbds: - for vbd in vbds: - try: - vdi = session.get_xenapi().VBD.get_VDI(vbd) - # Test valid VDI - record = session.get_xenapi().VDI.get_record(vdi) - except Exception, exc: - logging.warn(exc) - else: - vdis.append(vdi) - if len(vdis) > 0: - return vdis - else: - return None \ No newline at end of file diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py deleted file mode 100644 index c04a9f4ec..000000000 --- a/nova/virt/xenapi/vmops.py +++ /dev/null @@ -1,122 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Management class for VM-related functions (spawn, reboot, etc). -""" - -import logging -import xmlrpclib - -from twisted.internet import defer -from twisted.internet import reactor -from twisted.internet import task - -import VMHelper -import NetworkHelper - -from novadeps import XENAPI_POWER_STATE -from novadeps import Auth -from novadeps import Instance -from novadeps import Network - -class VMOps(object): - def __init__(self, session): - self._session = session - - def list_instances(self): - return [self._session.get_xenapi().VM.get_name_label(vm) \ - for vm in self._session.get_xenapi().VM.get_all()] - - @defer.inlineCallbacks - def spawn(self, instance): - vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) - if vm is not None: - raise Exception('Attempted to create non-unique name %s' % - Instance.get_name(instance)) - - network = Instance.get_network(instance) - network_ref = \ - yield NetworkHelper.find_network_with_bridge(self._session, Network.get_bridge(network)) - - user = Instance.get_user(instance) - project = Instance.get_project(instance) - vdi_uuid = yield VMHelper.fetch_image(self._session, - Instance.get_image_id(instance), user, project, True) - kernel = yield VMHelper.fetch_image(self._session, - Instance.get_kernel_id(instance), user, project, False) - ramdisk = yield VMHelper.fetch_image(self._session, - Instance.get_ramdisk_id(instance), user, project, False) - vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) - - vm_ref = yield VMHelper.create_vm(self._session, instance, kernel, ramdisk) - yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) - if network_ref: - yield VMHelper.create_vif(self._session, vm_ref, network_ref, Instance.get_mac(instance)) - logging.debug('Starting VM %s...', vm_ref) - yield self._session.call_xenapi('VM.start', vm_ref, False, False) - logging.info('Spawning VM %s created %s.', Instance.get_name(instance), vm_ref) - - @defer.inlineCallbacks - def reboot(self, instance): - instance_name = Instance.get_name(instance) - vm = yield VMHelper.lookup(self._session, instance_name) - if vm is None: - raise Exception('instance not present %s' % instance_name) - task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) - yield self._session.wait_for_task(task) - - @defer.inlineCallbacks - def destroy(self, instance): - vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) - if vm is None: - # Don't complain, just return. This lets us clean up instances - # that have already disappeared from the underlying platform. - defer.returnValue(None) - # Get the VDIs related to the VM - vdis = yield VMHelper.lookup_vm_vdis(self._session, vm) - try: - task = yield self._session.call_xenapi('Async.VM.hard_shutdown', vm) - yield self._session.wait_for_task(task) - except Exception, exc: - logging.warn(exc) - # Disk clean-up - if vdis: - for vdi in vdis: - try: - task = yield self._session.call_xenapi('Async.VDI.destroy', vdi) - yield self._session.wait_for_task(task) - except Exception, exc: - logging.warn(exc) - try: - task = yield self._session.call_xenapi('Async.VM.destroy', vm) - yield self._session.wait_for_task(task) - except Exception, exc: - logging.warn(exc) - - def get_info(self, instance_id): - vm = VMHelper.lookup_blocking(self._session, instance_id) - if vm is None: - raise Exception('instance not present %s' % instance_id) - rec = self._session.get_xenapi().VM.get_record(vm) - return {'state': XENAPI_POWER_STATE[rec['power_state']], - 'max_mem': long(rec['memory_static_max']) >> 10, - 'mem': long(rec['memory_dynamic_max']) >> 10, - 'num_cpu': rec['VCPUs_max'], - 'cpu_time': 0} - - def get_console_output(self, instance): - return 'FAKE CONSOLE OUTPUT' \ No newline at end of file diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py deleted file mode 100644 index fd316a0b8..000000000 --- a/nova/virt/xenapi/volumeops.py +++ /dev/null @@ -1,30 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Management class for Storage-related functions (attach, detach, etc). -""" - - -class VMOps(object): - def __init__(self, session): - self._session = session - - def attach_volume(self, instance_name, device_path, mountpoint): - return True - - def detach_volume(self, instance_name, mountpoint): - return True \ No newline at end of file -- cgit From a82581cbada92d0e274438757f7beb3ed335da1b Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 29 Nov 2010 16:31:31 +0000 Subject: pep8 fixes and further round of refactoring --- nova/virt/connection.py | 4 +- nova/virt/xapi/__init__.py | 15 --- nova/virt/xapi/network_utils.py | 40 ------- nova/virt/xapi/novadeps.py | 100 ----------------- nova/virt/xapi/vm_utils.py | 190 ------------------------------- nova/virt/xapi/vmops.py | 123 -------------------- nova/virt/xapi/volumeops.py | 30 ----- nova/virt/xenapi.py | 228 -------------------------------------- nova/virt/xenapi/__init__.py | 15 +++ nova/virt/xenapi/network_utils.py | 40 +++++++ nova/virt/xenapi/novadeps.py | 103 +++++++++++++++++ nova/virt/xenapi/vm_utils.py | 190 +++++++++++++++++++++++++++++++ nova/virt/xenapi/vmops.py | 123 ++++++++++++++++++++ nova/virt/xenapi/volumeops.py | 30 +++++ nova/virt/xenapi_conn.py | 227 +++++++++++++++++++++++++++++++++++++ 15 files changed, 730 insertions(+), 728 deletions(-) delete mode 100644 nova/virt/xapi/__init__.py delete mode 100644 nova/virt/xapi/network_utils.py delete mode 100644 nova/virt/xapi/novadeps.py delete mode 100644 nova/virt/xapi/vm_utils.py delete mode 100644 nova/virt/xapi/vmops.py delete mode 100644 nova/virt/xapi/volumeops.py delete mode 100644 nova/virt/xenapi.py create mode 100644 nova/virt/xenapi/__init__.py create mode 100644 nova/virt/xenapi/network_utils.py create mode 100644 nova/virt/xenapi/novadeps.py create mode 100644 nova/virt/xenapi/vm_utils.py create mode 100644 nova/virt/xenapi/vmops.py create mode 100644 nova/virt/xenapi/volumeops.py create mode 100644 nova/virt/xenapi_conn.py (limited to 'nova/virt') diff --git a/nova/virt/connection.py b/nova/virt/connection.py index 11f0fa8ce..c40bb4bb4 100644 --- a/nova/virt/connection.py +++ b/nova/virt/connection.py @@ -25,7 +25,7 @@ import sys from nova import flags from nova.virt import fake from nova.virt import libvirt_conn -from nova.virt import xenapi +from nova.virt import xenapi_conn FLAGS = flags.FLAGS @@ -61,7 +61,7 @@ def get_connection(read_only=False): elif t == 'libvirt': conn = libvirt_conn.get_connection(read_only) elif t == 'xenapi': - conn = xenapi.get_connection(read_only) + conn = xenapi_conn.get_connection(read_only) else: raise Exception('Unknown connection type "%s"' % t) diff --git a/nova/virt/xapi/__init__.py b/nova/virt/xapi/__init__.py deleted file mode 100644 index 3d598c463..000000000 --- a/nova/virt/xapi/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. diff --git a/nova/virt/xapi/network_utils.py b/nova/virt/xapi/network_utils.py deleted file mode 100644 index b58b9159c..000000000 --- a/nova/virt/xapi/network_utils.py +++ /dev/null @@ -1,40 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Helper methods for operations related to the management of network records and -their attributes like bridges, PIFs, QoS, as well as their lookup functions. -""" - -from twisted.internet import defer - - -class NetworkHelper(): - def __init__(self, session): - return - - @classmethod - @defer.inlineCallbacks - def find_network_with_bridge(self, session, bridge): - expr = 'field "bridge" = "%s"' % bridge - networks = yield session.call_xenapi('network.get_all_records_where', - expr) - if len(networks) == 1: - defer.returnValue(networks.keys()[0]) - elif len(networks) > 1: - raise Exception('Found non-unique network for bridge %s' % bridge) - else: - raise Exception('Found no network for bridge %s' % bridge) diff --git a/nova/virt/xapi/novadeps.py b/nova/virt/xapi/novadeps.py deleted file mode 100644 index 8cb5e3246..000000000 --- a/nova/virt/xapi/novadeps.py +++ /dev/null @@ -1,100 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -from nova import db -from nova import flags -from nova import process -from nova import utils - -from nova.compute import power_state -from nova.auth.manager import AuthManager -from nova.compute import instance_types -from nova.virt import images - -XENAPI_POWER_STATE = { - 'Halted': power_state.SHUTDOWN, - 'Running': power_state.RUNNING, - 'Paused': power_state.PAUSED, - 'Suspended': power_state.SHUTDOWN, # FIXME - 'Crashed': power_state.CRASHED} - - -class Instance(object): - - @classmethod - def get_name(self, instance): - return instance.name - - @classmethod - def get_type(self, instance): - return instance_types.INSTANCE_TYPES[instance.instance_type] - - @classmethod - def get_project(self, instance): - return AuthManager().get_project(instance.project_id) - - @classmethod - def get_project_id(self, instance): - return instance.project_id - - @classmethod - def get_image_id(self, instance): - return instance.image_id - - @classmethod - def get_kernel_id(self, instance): - return instance.kernel_id - - @classmethod - def get_ramdisk_id(self, instance): - return instance.ramdisk_id - - @classmethod - def get_network(self, instance): - return db.project_get_network(None, instance.project_id) - - @classmethod - def get_mac(self, instance): - return instance.mac_address - - @classmethod - def get_user(self, instance): - return AuthManager().get_user(instance.user_id) - - -class Network(object): - - @classmethod - def get_bridge(self, network): - return network.bridge - - -class Image(object): - - @classmethod - def get_url(self, image): - return images.image_url(image) - - -class User(object): - - @classmethod - def get_access(self, user, project): - return AuthManager().get_access_key(user, project) - - @classmethod - def get_secret(self, user): - return user.secret diff --git a/nova/virt/xapi/vm_utils.py b/nova/virt/xapi/vm_utils.py deleted file mode 100644 index 41f687ccb..000000000 --- a/nova/virt/xapi/vm_utils.py +++ /dev/null @@ -1,190 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Helper methods for operations related to the management of VM records and -their attributes like VDIs, VIFs, as well as their lookup functions. -""" - -import logging - -from twisted.internet import defer - -from nova import utils - -from novadeps import Instance -from novadeps import Image -from novadeps import User - - -class VMHelper(): - def __init__(self, session): - return - - @classmethod - @defer.inlineCallbacks - def create_vm(self, session, instance, kernel, ramdisk): - """Create a VM record. Returns a Deferred that gives the new - VM reference.""" - - instance_type = Instance.get_type(instance) - mem = str(long(instance_type['memory_mb']) * 1024 * 1024) - vcpus = str(instance_type['vcpus']) - rec = { - 'name_label': instance.name, - 'name_description': '', - 'is_a_template': False, - 'memory_static_min': '0', - 'memory_static_max': mem, - 'memory_dynamic_min': mem, - 'memory_dynamic_max': mem, - 'VCPUs_at_startup': vcpus, - 'VCPUs_max': vcpus, - 'VCPUs_params': {}, - 'actions_after_shutdown': 'destroy', - 'actions_after_reboot': 'restart', - 'actions_after_crash': 'destroy', - 'PV_bootloader': '', - 'PV_kernel': kernel, - 'PV_ramdisk': ramdisk, - 'PV_args': 'root=/dev/xvda1', - 'PV_bootloader_args': '', - 'PV_legacy_args': '', - 'HVM_boot_policy': '', - 'HVM_boot_params': {}, - 'platform': {}, - 'PCI_bus': '', - 'recommendations': '', - 'affinity': '', - 'user_version': '0', - 'other_config': {}, - } - logging.debug('Created VM %s...', Instance.get_name(instance)) - vm_ref = yield session.call_xenapi('VM.create', rec) - logging.debug('Created VM %s as %s.', - Instance.get_name(instance), vm_ref) - defer.returnValue(vm_ref) - - @classmethod - @defer.inlineCallbacks - def create_vbd(self, session, vm_ref, vdi_ref, userdevice, bootable): - """Create a VBD record. Returns a Deferred that gives the new - VBD reference.""" - - vbd_rec = {} - vbd_rec['VM'] = vm_ref - vbd_rec['VDI'] = vdi_ref - vbd_rec['userdevice'] = str(userdevice) - vbd_rec['bootable'] = bootable - vbd_rec['mode'] = 'RW' - vbd_rec['type'] = 'disk' - vbd_rec['unpluggable'] = True - vbd_rec['empty'] = False - vbd_rec['other_config'] = {} - vbd_rec['qos_algorithm_type'] = '' - vbd_rec['qos_algorithm_params'] = {} - vbd_rec['qos_supported_algorithms'] = [] - logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) - vbd_ref = yield session.call_xenapi('VBD.create', vbd_rec) - logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, - vdi_ref) - defer.returnValue(vbd_ref) - - @classmethod - @defer.inlineCallbacks - def create_vif(self, session, vm_ref, network_ref, mac_address): - """Create a VIF record. Returns a Deferred that gives the new - VIF reference.""" - - vif_rec = {} - vif_rec['device'] = '0' - vif_rec['network'] = network_ref - vif_rec['VM'] = vm_ref - vif_rec['MAC'] = mac_address - vif_rec['MTU'] = '1500' - vif_rec['other_config'] = {} - vif_rec['qos_algorithm_type'] = '' - vif_rec['qos_algorithm_params'] = {} - logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, - network_ref) - vif_ref = yield session.call_xenapi('VIF.create', vif_rec) - logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, - vm_ref, network_ref) - defer.returnValue(vif_ref) - - @classmethod - @defer.inlineCallbacks - def fetch_image(self, session, image, user, project, use_sr): - """use_sr: True to put the image as a VDI in an SR, False to place - it on dom0's filesystem. The former is for VM disks, the latter for - its kernel and ramdisk (if external kernels are being used). - Returns a Deferred that gives the new VDI UUID.""" - - url = Image.get_url(image) - access = User.get_access(user, project) - logging.debug("Asking xapi to fetch %s as %s" % (url, access)) - fn = use_sr and 'get_vdi' or 'get_kernel' - args = {} - args['src_url'] = url - args['username'] = access - args['password'] = User.get_secret(user) - if use_sr: - args['add_partition'] = 'true' - task = yield session.async_call_plugin('objectstore', fn, args) - uuid = yield session.wait_for_task(task) - defer.returnValue(uuid) - - @classmethod - @utils.deferredToThread - def lookup(self, session, i): - return VMHelper.lookup_blocking(session, i) - - @classmethod - def lookup_blocking(self, session, i): - vms = session.get_xenapi().VM.get_by_name_label(i) - n = len(vms) - if n == 0: - return None - elif n > 1: - raise Exception('duplicate name found: %s' % i) - else: - return vms[0] - - @classmethod - @utils.deferredToThread - def lookup_vm_vdis(self, session, vm): - return VMHelper.lookup_vm_vdis_blocking(session, vm) - - @classmethod - def lookup_vm_vdis_blocking(self, session, vm): - # Firstly we get the VBDs, then the VDIs. - # TODO: do we leave the read-only devices? - vbds = session.get_xenapi().VM.get_VBDs(vm) - vdis = [] - if vbds: - for vbd in vbds: - try: - vdi = session.get_xenapi().VBD.get_VDI(vbd) - # Test valid VDI - record = session.get_xenapi().VDI.get_record(vdi) - except Exception, exc: - logging.warn(exc) - else: - vdis.append(vdi) - if len(vdis) > 0: - return vdis - else: - return None diff --git a/nova/virt/xapi/vmops.py b/nova/virt/xapi/vmops.py deleted file mode 100644 index d6ea5e7db..000000000 --- a/nova/virt/xapi/vmops.py +++ /dev/null @@ -1,123 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Management class for VM-related functions (spawn, reboot, etc). -""" - -import logging - -from twisted.internet import defer - -from novadeps import XENAPI_POWER_STATE -from novadeps import Instance -from novadeps import Network - -from vm_utils import VMHelper -from network_utils import NetworkHelper - - -class VMOps(object): - def __init__(self, session): - self._session = session - - def list_instances(self): - return [self._session.get_xenapi().VM.get_name_label(vm) \ - for vm in self._session.get_xenapi().VM.get_all()] - - @defer.inlineCallbacks - def spawn(self, instance): - vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) - if vm is not None: - raise Exception('Attempted to create non-unique name %s' % - Instance.get_name(instance)) - - bridge = Network.get_bridge(Instance.get_network(instance)) - network_ref = \ - yield NetworkHelper.find_network_with_bridge(self._session, bridge) - - user = Instance.get_user(instance) - project = Instance.get_project(instance) - vdi_uuid = yield VMHelper.fetch_image(self._session, - Instance.get_image_id(instance), user, project, True) - kernel = yield VMHelper.fetch_image(self._session, - Instance.get_kernel_id(instance), user, project, False) - ramdisk = yield VMHelper.fetch_image(self._session, - Instance.get_ramdisk_id(instance), user, project, False) - vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) - vm_ref = yield VMHelper.create_vm(self._session, - instance, kernel, ramdisk) - yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) - if network_ref: - yield VMHelper.create_vif(self._session, vm_ref, - network_ref, Instance.get_mac(instance)) - logging.debug('Starting VM %s...', vm_ref) - yield self._session.call_xenapi('VM.start', vm_ref, False, False) - logging.info('Spawning VM %s created %s.', Instance.get_name(instance), - vm_ref) - - @defer.inlineCallbacks - def reboot(self, instance): - instance_name = Instance.get_name(instance) - vm = yield VMHelper.lookup(self._session, instance_name) - if vm is None: - raise Exception('instance not present %s' % instance_name) - task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) - yield self._session.wait_for_task(task) - - @defer.inlineCallbacks - def destroy(self, instance): - vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) - if vm is None: - # Don't complain, just return. This lets us clean up instances - # that have already disappeared from the underlying platform. - defer.returnValue(None) - # Get the VDIs related to the VM - vdis = yield VMHelper.lookup_vm_vdis(self._session, vm) - try: - task = yield self._session.call_xenapi('Async.VM.hard_shutdown', - vm) - yield self._session.wait_for_task(task) - except Exception, exc: - logging.warn(exc) - # Disk clean-up - if vdis: - for vdi in vdis: - try: - task = yield self._session.call_xenapi('Async.VDI.destroy', - vdi) - yield self._session.wait_for_task(task) - except Exception, exc: - logging.warn(exc) - try: - task = yield self._session.call_xenapi('Async.VM.destroy', vm) - yield self._session.wait_for_task(task) - except Exception, exc: - logging.warn(exc) - - def get_info(self, instance_id): - vm = VMHelper.lookup_blocking(self._session, instance_id) - if vm is None: - raise Exception('instance not present %s' % instance_id) - rec = self._session.get_xenapi().VM.get_record(vm) - return {'state': XENAPI_POWER_STATE[rec['power_state']], - 'max_mem': long(rec['memory_static_max']) >> 10, - 'mem': long(rec['memory_dynamic_max']) >> 10, - 'num_cpu': rec['VCPUs_max'], - 'cpu_time': 0} - - def get_console_output(self, instance): - return 'FAKE CONSOLE OUTPUT' diff --git a/nova/virt/xapi/volumeops.py b/nova/virt/xapi/volumeops.py deleted file mode 100644 index 23f79adf7..000000000 --- a/nova/virt/xapi/volumeops.py +++ /dev/null @@ -1,30 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -Management class for Storage-related functions (attach, detach, etc). -""" - - -class VolumeOps(object): - def __init__(self, session): - self._session = session - - def attach_volume(self, instance_name, device_path, mountpoint): - return True - - def detach_volume(self, instance_name, mountpoint): - return True diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py deleted file mode 100644 index 613f19f82..000000000 --- a/nova/virt/xenapi.py +++ /dev/null @@ -1,228 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -A connection to XenServer or Xen Cloud Platform. - -The concurrency model for this class is as follows: - -All XenAPI calls are on a thread (using t.i.t.deferToThread, via the decorator -deferredToThread). They are remote calls, and so may hang for the usual -reasons. They should not be allowed to block the reactor thread. - -All long-running XenAPI calls (VM.start, VM.reboot, etc) are called async -(using XenAPI.VM.async_start etc). These return a task, which can then be -polled for completion. Polling is handled using reactor.callLater. - -This combination of techniques means that we don't block the reactor thread at -all, and at the same time we don't hold lots of threads waiting for -long-running operations. - -FIXME: get_info currently doesn't conform to these rules, and will block the -reactor thread if the VM.get_by_name_label or VM.get_record calls block. - -**Related Flags** - -:xenapi_connection_url: URL for connection to XenServer/Xen Cloud Platform. -:xenapi_connection_username: Username for connection to XenServer/Xen Cloud - Platform (default: root). -:xenapi_connection_password: Password for connection to XenServer/Xen Cloud - Platform. -:xenapi_task_poll_interval: The interval (seconds) used for polling of - remote tasks (Async.VM.start, etc) - (default: 0.5). - -""" - -import logging -import xmlrpclib - -from twisted.internet import defer -from twisted.internet import reactor -#from twisted.internet import task - -from nova import flags -from nova import utils - -from xapi.vmops import VMOps -from xapi.volumeops import VolumeOps - -XenAPI = None - - -FLAGS = flags.FLAGS -flags.DEFINE_string('xenapi_connection_url', - None, - 'URL for connection to XenServer/Xen Cloud Platform.' - ' Required if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_username', - 'root', - 'Username for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_password', - None, - 'Password for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_float('xenapi_task_poll_interval', - 0.5, - 'The interval used for polling of remote tasks ' - '(Async.VM.start, etc). Used only if ' - 'connection_type=xenapi.') - - -def get_connection(_): - """Note that XenAPI doesn't have a read-only connection mode, so - the read_only parameter is ignored.""" - # This is loaded late so that there's no need to install this - # library when not using XenAPI. - global XenAPI - if XenAPI is None: - XenAPI = __import__('XenAPI') - url = FLAGS.xenapi_connection_url - username = FLAGS.xenapi_connection_username - password = FLAGS.xenapi_connection_password - if not url or password is None: - raise Exception('Must specify xenapi_connection_url, ' - 'xenapi_connection_username (optionally), and ' - 'xenapi_connection_password to use ' - 'connection_type=xenapi') - return XenAPIConnection(url, username, password) - - -class XenAPIConnection(object): - def __init__(self, url, user, pw): - session = XenAPISession(url, user, pw) - self._vmops = VMOps(session) - self._volumeops = VolumeOps(session) - - def list_instances(self): - return self._vmops.list_instances() - - def spawn(self, instance): - self._vmops.spawn(instance) - - def reboot(self, instance): - self._vmops.reboot(instance) - - def destroy(self, instance): - self._vmops.destroy(instance) - - def get_info(self, instance_id): - return self._vmops.get_info(instance_id) - - def get_console_output(self, instance): - return self._vmops.get_console_output(instance) - - def attach_volume(self, instance_name, device_path, mountpoint): - return self._volumeops.attach_volume(instance_name, - device_path, - mountpoint) - - def detach_volume(self, instance_name, mountpoint): - return self._volumeops.detach_volume(instance_name, mountpoint) - - -class XenAPISession(object): - def __init__(self, url, user, pw): - self._session = XenAPI.Session(url) - self._session.login_with_password(user, pw) - - def get_xenapi(self): - return self._session.xenapi - - def get_xenapi_host(self): - return self._session.xenapi.session.get_this_host(self._session.handle) - - @utils.deferredToThread - def call_xenapi(self, method, *args): - """Call the specified XenAPI method on a background thread. Returns - a Deferred for the result.""" - f = self._session.xenapi - for m in method.split('.'): - f = f.__getattr__(m) - return f(*args) - - @utils.deferredToThread - def async_call_plugin(self, plugin, fn, args): - """Call Async.host.call_plugin on a background thread. Returns a - Deferred with the task reference.""" - return _unwrap_plugin_exceptions( - self._session.xenapi.Async.host.call_plugin, - self.get_xenapi_host(), plugin, fn, args) - - def wait_for_task(self, task): - """Return a Deferred that will give the result of the given task. - The task is polled until it completes.""" - d = defer.Deferred() - reactor.callLater(0, self._poll_task, task, d) - return d - - @utils.deferredToThread - def _poll_task(self, task, deferred): - """Poll the given XenAPI task, and fire the given Deferred if we - get a result.""" - try: - #logging.debug('Polling task %s...', task) - status = self._session.xenapi.task.get_status(task) - if status == 'pending': - reactor.callLater(FLAGS.xenapi_task_poll_interval, - self._poll_task, task, deferred) - elif status == 'success': - result = self._session.xenapi.task.get_result(task) - logging.info('Task %s status: success. %s', task, result) - deferred.callback(_parse_xmlrpc_value(result)) - else: - error_info = self._session.xenapi.task.get_error_info(task) - logging.warn('Task %s status: %s. %s', task, status, - error_info) - deferred.errback(XenAPI.Failure(error_info)) - #logging.debug('Polling task %s done.', task) - except Exception, exc: - logging.warn(exc) - deferred.errback(exc) - - -def _unwrap_plugin_exceptions(func, *args, **kwargs): - try: - return func(*args, **kwargs) - except XenAPI.Failure, exc: - logging.debug("Got exception: %s", exc) - if (len(exc.details) == 4 and - exc.details[0] == 'XENAPI_PLUGIN_EXCEPTION' and - exc.details[2] == 'Failure'): - params = None - try: - params = eval(exc.details[3]) - except: - raise exc - raise XenAPI.Failure(params) - else: - raise - except xmlrpclib.ProtocolError, exc: - logging.debug("Got exception: %s", exc) - raise - - -def _parse_xmlrpc_value(val): - """Parse the given value as if it were an XML-RPC value. This is - sometimes used as the format for the task.result field.""" - if not val: - return val - x = xmlrpclib.loads( - '' + - val + - '') - return x[0][0] diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py new file mode 100644 index 000000000..3d598c463 --- /dev/null +++ b/nova/virt/xenapi/__init__.py @@ -0,0 +1,15 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py new file mode 100644 index 000000000..b58b9159c --- /dev/null +++ b/nova/virt/xenapi/network_utils.py @@ -0,0 +1,40 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of network records and +their attributes like bridges, PIFs, QoS, as well as their lookup functions. +""" + +from twisted.internet import defer + + +class NetworkHelper(): + def __init__(self, session): + return + + @classmethod + @defer.inlineCallbacks + def find_network_with_bridge(self, session, bridge): + expr = 'field "bridge" = "%s"' % bridge + networks = yield session.call_xenapi('network.get_all_records_where', + expr) + if len(networks) == 1: + defer.returnValue(networks.keys()[0]) + elif len(networks) > 1: + raise Exception('Found non-unique network for bridge %s' % bridge) + else: + raise Exception('Found no network for bridge %s' % bridge) diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py new file mode 100644 index 000000000..ba62468fb --- /dev/null +++ b/nova/virt/xenapi/novadeps.py @@ -0,0 +1,103 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from nova import db +from nova import flags +from nova import process +from nova import utils +from nova import context + +from nova.compute import power_state +from nova.auth.manager import AuthManager +from nova.compute import instance_types +from nova.virt import images + +XENAPI_POWER_STATE = { + 'Halted': power_state.SHUTDOWN, + 'Running': power_state.RUNNING, + 'Paused': power_state.PAUSED, + 'Suspended': power_state.SHUTDOWN, # FIXME + 'Crashed': power_state.CRASHED} + + +class Instance(object): + + @classmethod + def get_name(self, instance): + return instance.name + + @classmethod + def get_type(self, instance): + return instance_types.INSTANCE_TYPES[instance.instance_type] + + @classmethod + def get_project(self, instance): + return AuthManager().get_project(instance.project_id) + + @classmethod + def get_project_id(self, instance): + return instance.project_id + + @classmethod + def get_image_id(self, instance): + return instance.image_id + + @classmethod + def get_kernel_id(self, instance): + return instance.kernel_id + + @classmethod + def get_ramdisk_id(self, instance): + return instance.ramdisk_id + + @classmethod + def get_network(self, instance): + # TODO: is ge_admin_context the right context to retrieve? + return db.project_get_network(context.get_admin_context(), + instance.project_id) + + @classmethod + def get_mac(self, instance): + return instance.mac_address + + @classmethod + def get_user(self, instance): + return AuthManager().get_user(instance.user_id) + + +class Network(object): + + @classmethod + def get_bridge(self, network): + return network.bridge + + +class Image(object): + + @classmethod + def get_url(self, image): + return images.image_url(image) + + +class User(object): + + @classmethod + def get_access(self, user, project): + return AuthManager().get_access_key(user, project) + + @classmethod + def get_secret(self, user): + return user.secret diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py new file mode 100644 index 000000000..b68df2791 --- /dev/null +++ b/nova/virt/xenapi/vm_utils.py @@ -0,0 +1,190 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of VM records and +their attributes like VDIs, VIFs, as well as their lookup functions. +""" + +import logging + +from twisted.internet import defer + +from nova import utils + +from novadeps import Instance +from novadeps import Image +from novadeps import User + + +class VMHelper(): + def __init__(self, session): + return + + @classmethod + @defer.inlineCallbacks + def create_vm(self, session, instance, kernel, ramdisk): + """Create a VM record. Returns a Deferred that gives the new + VM reference.""" + + instance_type = Instance.get_type(instance) + mem = str(long(instance_type['memory_mb']) * 1024 * 1024) + vcpus = str(instance_type['vcpus']) + rec = { + 'name_label': instance.name, + 'name_description': '', + 'is_a_template': False, + 'memory_static_min': '0', + 'memory_static_max': mem, + 'memory_dynamic_min': mem, + 'memory_dynamic_max': mem, + 'VCPUs_at_startup': vcpus, + 'VCPUs_max': vcpus, + 'VCPUs_params': {}, + 'actions_after_shutdown': 'destroy', + 'actions_after_reboot': 'restart', + 'actions_after_crash': 'destroy', + 'PV_bootloader': '', + 'PV_kernel': kernel, + 'PV_ramdisk': ramdisk, + 'PV_args': 'root=/dev/xvda1', + 'PV_bootloader_args': '', + 'PV_legacy_args': '', + 'HVM_boot_policy': '', + 'HVM_boot_params': {}, + 'platform': {}, + 'PCI_bus': '', + 'recommendations': '', + 'affinity': '', + 'user_version': '0', + 'other_config': {}, + } + logging.debug('Created VM %s...', Instance.get_name(instance)) + vm_ref = yield session.call_xenapi('VM.create', rec) + logging.debug('Created VM %s as %s.', + Instance.get_name(instance), vm_ref) + defer.returnValue(vm_ref) + + @classmethod + @defer.inlineCallbacks + def create_vbd(self, session, vm_ref, vdi_ref, userdevice, bootable): + """Create a VBD record. Returns a Deferred that gives the new + VBD reference.""" + + vbd_rec = {} + vbd_rec['VM'] = vm_ref + vbd_rec['VDI'] = vdi_ref + vbd_rec['userdevice'] = str(userdevice) + vbd_rec['bootable'] = bootable + vbd_rec['mode'] = 'RW' + vbd_rec['type'] = 'disk' + vbd_rec['unpluggable'] = True + vbd_rec['empty'] = False + vbd_rec['other_config'] = {} + vbd_rec['qos_algorithm_type'] = '' + vbd_rec['qos_algorithm_params'] = {} + vbd_rec['qos_supported_algorithms'] = [] + logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) + vbd_ref = yield session.call_xenapi('VBD.create', vbd_rec) + logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, + vdi_ref) + defer.returnValue(vbd_ref) + + @classmethod + @defer.inlineCallbacks + def create_vif(self, session, vm_ref, network_ref, mac_address): + """Create a VIF record. Returns a Deferred that gives the new + VIF reference.""" + + vif_rec = {} + vif_rec['device'] = '0' + vif_rec['network'] = network_ref + vif_rec['VM'] = vm_ref + vif_rec['MAC'] = mac_address + vif_rec['MTU'] = '1500' + vif_rec['other_config'] = {} + vif_rec['qos_algorithm_type'] = '' + vif_rec['qos_algorithm_params'] = {} + logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, + network_ref) + vif_ref = yield session.call_xenapi('VIF.create', vif_rec) + logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, + vm_ref, network_ref) + defer.returnValue(vif_ref) + + @classmethod + @defer.inlineCallbacks + def fetch_image(self, session, image, user, project, use_sr): + """use_sr: True to put the image as a VDI in an SR, False to place + it on dom0's filesystem. The former is for VM disks, the latter for + its kernel and ramdisk (if external kernels are being used). + Returns a Deferred that gives the new VDI UUID.""" + + url = Image.get_url(image) + access = User.get_access(user, project) + logging.debug("Asking xapi to fetch %s as %s" % (url, access)) + fn = use_sr and 'get_vdi' or 'get_kernel' + args = {} + args['src_url'] = url + args['username'] = access + args['password'] = User.get_secret(user) + if use_sr: + args['add_partition'] = 'true' + task = yield session.async_call_plugin('objectstore', fn, args) + uuid = yield session.wait_for_task(task) + defer.returnValue(uuid) + + @classmethod + @utils.deferredToThread + def lookup(self, session, i): + return VMHelper.lookup_blocking(session, i) + + @classmethod + def lookup_blocking(self, session, i): + vms = session.get_xenapi().VM.get_by_name_label(i) + n = len(vms) + if n == 0: + return None + elif n > 1: + raise Exception('duplicate name found: %s' % i) + else: + return vms[0] + + @classmethod + @utils.deferredToThread + def lookup_vm_vdis(self, session, vm): + return VMHelper.lookup_vm_vdis_blocking(session, vm) + + @classmethod + def lookup_vm_vdis_blocking(self, session, vm): + # Firstly we get the VBDs, then the VDIs. + # TODO: do we leave the read-only devices? + vbds = session.get_xenapi().VM.get_VBDs(vm) + vdis = [] + if vbds: + for vbd in vbds: + try: + vdi = session.get_xenapi().VBD.get_VDI(vbd) + # Test valid VDI + record = session.get_xenapi().VDI.get_record(vdi) + except Exception, exc: + logging.warn(exc) + else: + vdis.append(vdi) + if len(vdis) > 0: + return vdis + else: + return None diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py new file mode 100644 index 000000000..d6ea5e7db --- /dev/null +++ b/nova/virt/xenapi/vmops.py @@ -0,0 +1,123 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Management class for VM-related functions (spawn, reboot, etc). +""" + +import logging + +from twisted.internet import defer + +from novadeps import XENAPI_POWER_STATE +from novadeps import Instance +from novadeps import Network + +from vm_utils import VMHelper +from network_utils import NetworkHelper + + +class VMOps(object): + def __init__(self, session): + self._session = session + + def list_instances(self): + return [self._session.get_xenapi().VM.get_name_label(vm) \ + for vm in self._session.get_xenapi().VM.get_all()] + + @defer.inlineCallbacks + def spawn(self, instance): + vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) + if vm is not None: + raise Exception('Attempted to create non-unique name %s' % + Instance.get_name(instance)) + + bridge = Network.get_bridge(Instance.get_network(instance)) + network_ref = \ + yield NetworkHelper.find_network_with_bridge(self._session, bridge) + + user = Instance.get_user(instance) + project = Instance.get_project(instance) + vdi_uuid = yield VMHelper.fetch_image(self._session, + Instance.get_image_id(instance), user, project, True) + kernel = yield VMHelper.fetch_image(self._session, + Instance.get_kernel_id(instance), user, project, False) + ramdisk = yield VMHelper.fetch_image(self._session, + Instance.get_ramdisk_id(instance), user, project, False) + vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) + vm_ref = yield VMHelper.create_vm(self._session, + instance, kernel, ramdisk) + yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) + if network_ref: + yield VMHelper.create_vif(self._session, vm_ref, + network_ref, Instance.get_mac(instance)) + logging.debug('Starting VM %s...', vm_ref) + yield self._session.call_xenapi('VM.start', vm_ref, False, False) + logging.info('Spawning VM %s created %s.', Instance.get_name(instance), + vm_ref) + + @defer.inlineCallbacks + def reboot(self, instance): + instance_name = Instance.get_name(instance) + vm = yield VMHelper.lookup(self._session, instance_name) + if vm is None: + raise Exception('instance not present %s' % instance_name) + task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) + yield self._session.wait_for_task(task) + + @defer.inlineCallbacks + def destroy(self, instance): + vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) + if vm is None: + # Don't complain, just return. This lets us clean up instances + # that have already disappeared from the underlying platform. + defer.returnValue(None) + # Get the VDIs related to the VM + vdis = yield VMHelper.lookup_vm_vdis(self._session, vm) + try: + task = yield self._session.call_xenapi('Async.VM.hard_shutdown', + vm) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + # Disk clean-up + if vdis: + for vdi in vdis: + try: + task = yield self._session.call_xenapi('Async.VDI.destroy', + vdi) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + try: + task = yield self._session.call_xenapi('Async.VM.destroy', vm) + yield self._session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + + def get_info(self, instance_id): + vm = VMHelper.lookup_blocking(self._session, instance_id) + if vm is None: + raise Exception('instance not present %s' % instance_id) + rec = self._session.get_xenapi().VM.get_record(vm) + return {'state': XENAPI_POWER_STATE[rec['power_state']], + 'max_mem': long(rec['memory_static_max']) >> 10, + 'mem': long(rec['memory_dynamic_max']) >> 10, + 'num_cpu': rec['VCPUs_max'], + 'cpu_time': 0} + + def get_console_output(self, instance): + return 'FAKE CONSOLE OUTPUT' diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py new file mode 100644 index 000000000..23f79adf7 --- /dev/null +++ b/nova/virt/xenapi/volumeops.py @@ -0,0 +1,30 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Management class for Storage-related functions (attach, detach, etc). +""" + + +class VolumeOps(object): + def __init__(self, session): + self._session = session + + def attach_volume(self, instance_name, device_path, mountpoint): + return True + + def detach_volume(self, instance_name, mountpoint): + return True diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py new file mode 100644 index 000000000..0a73b4774 --- /dev/null +++ b/nova/virt/xenapi_conn.py @@ -0,0 +1,227 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +A connection to XenServer or Xen Cloud Platform. + +The concurrency model for this class is as follows: + +All XenAPI calls are on a thread (using t.i.t.deferToThread, via the decorator +deferredToThread). They are remote calls, and so may hang for the usual +reasons. They should not be allowed to block the reactor thread. + +All long-running XenAPI calls (VM.start, VM.reboot, etc) are called async +(using XenAPI.VM.async_start etc). These return a task, which can then be +polled for completion. Polling is handled using reactor.callLater. + +This combination of techniques means that we don't block the reactor thread at +all, and at the same time we don't hold lots of threads waiting for +long-running operations. + +FIXME: get_info currently doesn't conform to these rules, and will block the +reactor thread if the VM.get_by_name_label or VM.get_record calls block. + +**Related Flags** + +:xenapi_connection_url: URL for connection to XenServer/Xen Cloud Platform. +:xenapi_connection_username: Username for connection to XenServer/Xen Cloud + Platform (default: root). +:xenapi_connection_password: Password for connection to XenServer/Xen Cloud + Platform. +:xenapi_task_poll_interval: The interval (seconds) used for polling of + remote tasks (Async.VM.start, etc) + (default: 0.5). + +""" + +import logging +import xmlrpclib + +from twisted.internet import defer +from twisted.internet import reactor + +from nova import flags +from nova import utils + +from xenapi.vmops import VMOps +from xenapi.volumeops import VolumeOps + +XenAPI = None + + +FLAGS = flags.FLAGS +flags.DEFINE_string('xenapi_connection_url', + None, + 'URL for connection to XenServer/Xen Cloud Platform.' + ' Required if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_username', + 'root', + 'Username for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_password', + None, + 'Password for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_float('xenapi_task_poll_interval', + 0.5, + 'The interval used for polling of remote tasks ' + '(Async.VM.start, etc). Used only if ' + 'connection_type=xenapi.') + + +def get_connection(_): + """Note that XenAPI doesn't have a read-only connection mode, so + the read_only parameter is ignored.""" + # This is loaded late so that there's no need to install this + # library when not using XenAPI. + global XenAPI + if XenAPI is None: + XenAPI = __import__('XenAPI') + url = FLAGS.xenapi_connection_url + username = FLAGS.xenapi_connection_username + password = FLAGS.xenapi_connection_password + if not url or password is None: + raise Exception('Must specify xenapi_connection_url, ' + 'xenapi_connection_username (optionally), and ' + 'xenapi_connection_password to use ' + 'connection_type=xenapi') + return XenAPIConnection(url, username, password) + + +class XenAPIConnection(object): + def __init__(self, url, user, pw): + session = XenAPISession(url, user, pw) + self._vmops = VMOps(session) + self._volumeops = VolumeOps(session) + + def list_instances(self): + return self._vmops.list_instances() + + def spawn(self, instance): + self._vmops.spawn(instance) + + def reboot(self, instance): + self._vmops.reboot(instance) + + def destroy(self, instance): + self._vmops.destroy(instance) + + def get_info(self, instance_id): + return self._vmops.get_info(instance_id) + + def get_console_output(self, instance): + return self._vmops.get_console_output(instance) + + def attach_volume(self, instance_name, device_path, mountpoint): + return self._volumeops.attach_volume(instance_name, + device_path, + mountpoint) + + def detach_volume(self, instance_name, mountpoint): + return self._volumeops.detach_volume(instance_name, mountpoint) + + +class XenAPISession(object): + def __init__(self, url, user, pw): + self._session = XenAPI.Session(url) + self._session.login_with_password(user, pw) + + def get_xenapi(self): + return self._session.xenapi + + def get_xenapi_host(self): + return self._session.xenapi.session.get_this_host(self._session.handle) + + @utils.deferredToThread + def call_xenapi(self, method, *args): + """Call the specified XenAPI method on a background thread. Returns + a Deferred for the result.""" + f = self._session.xenapi + for m in method.split('.'): + f = f.__getattr__(m) + return f(*args) + + @utils.deferredToThread + def async_call_plugin(self, plugin, fn, args): + """Call Async.host.call_plugin on a background thread. Returns a + Deferred with the task reference.""" + return _unwrap_plugin_exceptions( + self._session.xenapi.Async.host.call_plugin, + self.get_xenapi_host(), plugin, fn, args) + + def wait_for_task(self, task): + """Return a Deferred that will give the result of the given task. + The task is polled until it completes.""" + d = defer.Deferred() + reactor.callLater(0, self._poll_task, task, d) + return d + + @utils.deferredToThread + def _poll_task(self, task, deferred): + """Poll the given XenAPI task, and fire the given Deferred if we + get a result.""" + try: + #logging.debug('Polling task %s...', task) + status = self._session.xenapi.task.get_status(task) + if status == 'pending': + reactor.callLater(FLAGS.xenapi_task_poll_interval, + self._poll_task, task, deferred) + elif status == 'success': + result = self._session.xenapi.task.get_result(task) + logging.info('Task %s status: success. %s', task, result) + deferred.callback(_parse_xmlrpc_value(result)) + else: + error_info = self._session.xenapi.task.get_error_info(task) + logging.warn('Task %s status: %s. %s', task, status, + error_info) + deferred.errback(XenAPI.Failure(error_info)) + #logging.debug('Polling task %s done.', task) + except Exception, exc: + logging.warn(exc) + deferred.errback(exc) + + +def _unwrap_plugin_exceptions(func, *args, **kwargs): + try: + return func(*args, **kwargs) + except XenAPI.Failure, exc: + logging.debug("Got exception: %s", exc) + if (len(exc.details) == 4 and + exc.details[0] == 'XENAPI_PLUGIN_EXCEPTION' and + exc.details[2] == 'Failure'): + params = None + try: + params = eval(exc.details[3]) + except: + raise exc + raise XenAPI.Failure(params) + else: + raise + except xmlrpclib.ProtocolError, exc: + logging.debug("Got exception: %s", exc) + raise + + +def _parse_xmlrpc_value(val): + """Parse the given value as if it were an XML-RPC value. This is + sometimes used as the format for the task.result field.""" + if not val: + return val + x = xmlrpclib.loads( + '' + + val + + '') + return x[0][0] -- cgit From 04b1740c991d6d499364c21c2524c46ed5fc2522 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 29 Nov 2010 17:26:44 +0000 Subject: changes --- nova/virt/xenapi.py | 93 +++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 68 insertions(+), 25 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi.py b/nova/virt/xenapi.py index 236360f11..f2ba71306 100644 --- a/nova/virt/xenapi.py +++ b/nova/virt/xenapi.py @@ -198,6 +198,9 @@ class XenAPIConnection(object): @defer.inlineCallbacks def _create_vdi(self, sr_ref, size, type, label, description, read_only, sharable): + """Create a VDI record. Returns a Deferred that gives the new + VDI reference.""" + vdi_rec = {} vdi_rec['read_only'] = read_only vdi_rec['SR'] = sr_ref @@ -337,7 +340,8 @@ class XenAPIConnection(object): description = 'Attached-to:%s' % instance_name # Create SR and check the physical space available for the VDI allocation sr_ref = yield self._create_sr(target, label, description) - disk_size = yield self._get_sr_available_space(sr_ref) + disk_size = int(target['size']) + #disk_size = yield self._get_sr_available_space(sr_ref) # Create VDI and attach VBD to VM vm_ref = yield self._lookup(instance_name) logging.debug("Mounting disk of: %s GB", (disk_size / (1024*1024*1024.0))) @@ -347,20 +351,30 @@ class XenAPIConnection(object): False, False) except Exception, exc: logging.warn(exc) - if sr_ref: - yield self._destroy_sr(sr_ref) - raise Exception('Unable to create VDI on SR %s' % sr_ref) + yield self._destroy_sr(sr_ref) + raise Exception('Unable to create VDI on SR %s for instance %s' + % (sr_ref, + instance_name)) else: - try: + try: userdevice = 2 # FIXME: this depends on the numbers of attached disks vbd_ref = yield self._create_vbd(vm_ref, vdi_ref, userdevice, False, True, False) - task = yield self._call_xenapi('Async.VBD.plug', vbd_ref) - yield self._wait_for_task(task) except Exception, exc: logging.warn(exc) - if sr_ref: + yield self._destroy_sr(sr_ref) + raise Exception('Unable to create VBD on SR %s for instance %s' + % (sr_ref, + instance_name)) + else: + try: + raise Exception('') + task = yield self._call_xenapi('Async.VBD.plug', vbd_ref) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) yield self._destroy_sr(sr_ref) - raise Exception('Unable to create VBD on SR %s' % sr_ref) + raise Exception('Unable to attach volume to instance %s' % instance_name) + yield True @defer.inlineCallbacks @@ -412,7 +426,7 @@ class XenAPIConnection(object): try: self._conn.xenapi.SR.create(self._get_xenapi_host(), target, '-1', '', '', - 'lvmoiscsi', '', False, {}) + 'iscsi', '', False, {}) except XenAPI.Failure, exc: if exc.details[0] == 'SR_BACKEND_FAILURE_107': xml_response = parseString(exc.details[3]) @@ -427,6 +441,9 @@ class XenAPIConnection(object): for n in isciLuns.item(0).childNodes: if n.nodeType == 1: target[n.nodeName] = str(n.firstChild.data).strip() + else: + logging.warn(exc) + raise Exception('Unable to access SR') return target @utils.deferredToThread @@ -444,24 +461,45 @@ class XenAPIConnection(object): def _create_sr_blocking(self, target, label, description): # TODO: we might want to put all these string literals into constants - sr_ref = self._conn.xenapi.SR.create(self._get_xenapi_host(), + sr_ref = self._conn.xenapi.SR.get_by_name_label(label) + if sr_ref is None: + sr_ref = self._conn.xenapi.SR.create(self._get_xenapi_host(), target, target['size'], label, description, - 'lvmoiscsi', + 'iscsi', '', True, {}) - # TODO: there might be some timing issues here - self._conn.xenapi.SR.scan(sr_ref) - return sr_ref + if sr_ref: + #self._conn.xenapi.SR.scan(sr_ref) + return sr_ref + else: + raise Exception('Unable to create SR') @defer.inlineCallbacks def _destroy_sr(self, sr_ref): # Some clean-up depending on the state of the SR - #yield self._destroy_vdbs(sr_ref) - #yield self._destroy_vdis(sr_ref) - # Destroy PDBs + # Remove VBDs + #vbds = yield self._conn.xenapi.SR.get_VBDs(sr_ref) + #for vbd_ref in vbds: + # try: + # task = yield self._call_xenapi('Async.VBD.destroy', vbd_ref) + # yield self._wait_for_task(task) + # except Exception, exc: + # logging.warn(exc) + # Remove VDIs + #======================================================================= + # vdis = yield self._conn.xenapi.SR.get_VDIs(sr_ref) + # for vdi_ref in vdis: + # try: + # task = yield self._call_xenapi('Async.VDI.destroy', vdi_ref) + # yield self._wait_for_task(task) + # except Exception, exc: + # logging.warn(exc) + #======================================================================= + sr_rec = self._conn.xenapi.SR.get_record(sr_ref) + # Detach from host pbds = yield self._conn.xenapi.SR.get_PBDs(sr_ref) for pbd_ref in pbds: try: @@ -469,16 +507,21 @@ class XenAPIConnection(object): yield self._wait_for_task(task) except Exception, exc: logging.warn(exc) - else: - task = yield self._call_xenapi('Async.PBD.destroy', pbd_ref) - yield self._wait_for_task(task) - # Forget SR + # Destroy SR try: - task = yield self._call_xenapi('Async.SR.forget', sr_ref) + task = yield self._call_xenapi('Async.SR.destroy', sr_ref) yield self._wait_for_task(task) except Exception, exc: logging.warn(exc) + def _sr_dispose_action(self, action, records): + for rec_ref in records: + try: + task = yield self._call_xenapi(action, rec_ref) + yield self._wait_for_task(task) + except Exception, exc: + logging.warn(exc) + @utils.deferredToThread def _lookup_vm_vdis(self, vm): return self._lookup_vm_vdis_blocking(vm) @@ -592,8 +635,8 @@ def _parse_volume_info(device_path, mountpoint): volume_info = {} volume_info['volumeId'] = 'vol-qurmrzn9' # Because XCP/XS want an x beforehand - volume_info['xenMountpoint'] = '/dev/xvdc' - volume_info['targetHost'] = '' + volume_info['mountpoint'] = '/dev/xvdc' # translate + volume_info['targetHost'] = '10.70.177.40' volume_info['targetPort'] = '3260' # default 3260 volume_info['iqn'] = 'iqn.2010-10.org.openstack:vol-qurmrzn9' return volume_info -- cgit From 40de074f44059f89caa15420a7174f63c76eec48 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 30 Nov 2010 19:03:13 +0000 Subject: iscsi volumes attach/detach complete. There is only one minor issue on how to discover targets from device_path --- nova/virt/xenapi/vm_utils.py | 38 +++++++ nova/virt/xenapi/volume_utils.py | 210 +++++++++++++++++++++++++++++++++++++++ nova/virt/xenapi/volumeops.py | 93 +++++++++++------ 3 files changed, 313 insertions(+), 28 deletions(-) create mode 100644 nova/virt/xenapi/volume_utils.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index b68df2791..6966e7b7b 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -103,6 +103,44 @@ class VMHelper(): vdi_ref) defer.returnValue(vbd_ref) + @classmethod + @utils.deferredToThread + def find_vbd_by_number(self, session, vm_ref, number): + return VMHelper.find_vbd_by_number_blocking(session, vm_ref, number) + + @classmethod + def find_vbd_by_number_blocking(self, session, vm_ref, number): + vbds = session.get_xenapi().VM.get_VBDs(vm_ref) + if vbds: + for vbd in vbds: + try: + vbd_rec = session.get_xenapi().VBD.get_record(vbd) + if vbd_rec['userdevice'] == str(number): + return vbd + except Exception, exc: + logging.warn(exc) + raise Exception('VBD not found in instance %s' % vm_ref) + + @classmethod + @defer.inlineCallbacks + def unplug_vbd(self, session, vbd_ref): + try: + vbd_ref = yield session.call_xenapi('VBD.unplug', vbd_ref) + except Exception, exc: + logging.warn(exc) + if exc.details[0] != 'DEVICE_ALREADY_DETACHED': + raise Exception('Unable to unplug VBD %s' % vbd_ref) + + @classmethod + @defer.inlineCallbacks + def destroy_vbd(self, session, vbd_ref): + try: + task = yield session.call_xenapi('Async.VBD.destroy', vbd_ref) + yield session.wait_for_task(task) + except Exception, exc: + logging.warn(exc) + raise Exception('Unable to destroy VBD %s' % vbd_ref) + @classmethod @defer.inlineCallbacks def create_vif(self, session, vm_ref, network_ref, mac_address): diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py new file mode 100644 index 000000000..b982ac124 --- /dev/null +++ b/nova/virt/xenapi/volume_utils.py @@ -0,0 +1,210 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper methods for operations related to the management of volumes, +and storage repositories +""" + +import logging +import re +import string + +from twisted.internet import defer + +from nova import utils +from nova import flags + +FLAGS = flags.FLAGS + +#FIXME: replace with proper target discovery +flags.DEFINE_string('target_host', None, 'iSCSI Target Host') +flags.DEFINE_string('target_port', '3260', 'iSCSI Target Port, 3260 Default') +flags.DEFINE_string('iqn_prefix', 'iqn.2010-10.org.openstack', 'IQN Prefix') + + +class VolumeHelper(): + def __init__(self, session): + return + + @classmethod + @utils.deferredToThread + def create_iscsi_storage(self, session, target, port, target_iqn, + username, password, label, description): + + return VolumeHelper.create_iscsi_storage_blocking(session, target, + port, + target_iqn, + username, + password, + label, + description) + + @classmethod + def create_iscsi_storage_blocking(self, session, target, port, target_iqn, + username, password, label, description): + + sr_ref = session.get_xenapi().SR.get_by_name_label(label) + if len(sr_ref) == 0: + logging.debug('Introducing %s...' % label) + try: + sr_ref = session.get_xenapi().SR.create( + session.get_xenapi_host(), + {'target': target, + 'port': port, + 'targetIQN': target_iqn + # TODO: when/if chap authentication is used + #'chapuser': username, + #'chappassword': password + }, + '0', label, description, 'iscsi', '', False, {}) + logging.debug('Introduced %s as %s.' % (label, sr_ref)) + return sr_ref + except Exception, exc: + logging.warn(exc) + raise Exception('Unable to create Storage Repository') + else: + return sr_ref[0] + + @classmethod + @defer.inlineCallbacks + def find_sr_from_vbd(self, session, vbd_ref): + vdi_ref = yield session.get_xenapi().VBD.get_VDI(vbd_ref) + sr_ref = yield session.get_xenapi().VDI.get_SR(vdi_ref) + defer.returnValue(sr_ref) + + @classmethod + @utils.deferredToThread + def destroy_iscsi_storage(self, session, sr_ref): + VolumeHelper.destroy_iscsi_storage_blocking(session, sr_ref) + + @classmethod + def destroy_iscsi_storage_blocking(self, session, sr_ref): + logging.debug("Forgetting SR %s ... ", sr_ref) + pbds = [] + try: + pbds = session.get_xenapi().SR.get_PBDs(sr_ref) + except Exception, exc: + logging.warn('Ignoring exception %s when getting PBDs for %s', + exc, sr_ref) + for pbd in pbds: + try: + session.get_xenapi().PBD.unplug(pbd) + except Exception, exc: + logging.warn('Ignoring exception %s when unplugging PBD %s', + exc, pbd) + try: + session.get_xenapi().SR.forget(sr_ref) + logging.debug("Forgetting SR %s done.", sr_ref) + except Exception, exc: + logging.warn('Ignoring exception %s when forgetting SR %s', + exc, sr_ref) + + @classmethod + @utils.deferredToThread + def introduce_vdi(self, session, sr_ref): + return VolumeHelper.introduce_vdi_blocking(session, sr_ref) + + @classmethod + def introduce_vdi_blocking(self, session, sr_ref): + try: + vdis = session.get_xenapi().SR.get_VDIs(sr_ref) + except Exception, exc: + raise Exception('Unable to introduce VDI on SR %s' % sr_ref) + try: + vdi_rec = session.get_xenapi().VDI.get_record(vdis[0]) + except Exception, exc: + raise Exception('Unable to get record of VDI %s on' % vdis[0]) + else: + return session.get_xenapi().VDI.introduce( + vdi_rec['uuid'], + vdi_rec['name_label'], + vdi_rec['name_description'], + vdi_rec['SR'], + vdi_rec['type'], + vdi_rec['sharable'], + vdi_rec['read_only'], + vdi_rec['other_config'], + vdi_rec['location'], + vdi_rec['xenstore_data'], + vdi_rec['sm_config']) + + @classmethod + def parse_volume_info(self, device_path, mountpoint): + # Because XCP/XS want a device number instead of a mountpoint + device_number = VolumeHelper.mountpoint_to_number(mountpoint) + volume_id = _get_volume_id(device_path) + target_host = _get_target_host(device_path) + target_port = _get_target_port(device_path) + target_iqn = _get_iqn(device_path) + + if (device_number < 0) or \ + (volume_id is None) or \ + (target_host is None) or \ + (target_iqn is None): + raise Exception('Unable to obtain target information %s, %s' % + (device_path, mountpoint)) + + volume_info = {} + volume_info['deviceNumber'] = device_number + volume_info['volumeId'] = volume_id + volume_info['targetHost'] = target_host + volume_info['targetPort'] = target_port + volume_info['targeIQN'] = target_iqn + return volume_info + + @classmethod + def mountpoint_to_number(self, mountpoint): + if mountpoint.startswith('/dev/'): + mountpoint = mountpoint[5:] + if re.match('^[hs]d[a-p]$', mountpoint): + return (ord(mountpoint[2:3]) - ord('a')) + elif re.match('^vd[a-p]$', mountpoint): + return (ord(mountpoint[2:3]) - ord('a')) + elif re.match('^[0-9]+$', mountpoint): + return string.atoi(mountpoint, 10) + else: + logging.warn('Mountpoint cannot be translated: %s', mountpoint) + return -1 + + +def _get_volume_id(n): + # FIXME: n must contain at least the volume_id + # /vol- is for remote volumes + # -vol- is for local volumes + # see compute/manager->setup_compute_volume + volume_id = n[n.find('/vol-') + 1:] + if volume_id == n: + volume_id = n[n.find('-vol-') + 1:].replace('--', '-') + return volume_id + + +def _get_target_host(n): + # FIXME: if n is none fall back on flags + if n is None or FLAGS.target_host: + return FLAGS.target_host + + +def _get_target_port(n): + # FIXME: if n is none fall back on flags + return FLAGS.target_port + + +def _get_iqn(n): + # FIXME: n must contain at least the volume_id + volume_id = _get_volume_id(n) + if n is None or FLAGS.iqn_prefix: + return '%s:%s' % (FLAGS.iqn_prefix, volume_id) diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index 5aefa0611..d5c309240 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -17,6 +17,12 @@ """ Management class for Storage-related functions (attach, detach, etc). """ +import logging + +from twisted.internet import defer + +from volume_utils import VolumeHelper +from vm_utils import VMHelper class VolumeOps(object): @@ -25,58 +31,89 @@ class VolumeOps(object): @defer.inlineCallbacks def attach_volume(self, instance_name, device_path, mountpoint): + # Before we start, check that the VM exists + vm_ref = yield VMHelper.lookup(self._session, instance_name) + if vm_ref is None: + raise Exception('Instance %s does not exist' % instance_name) # NOTE: No Resource Pool concept so far logging.debug("Attach_volume: %s, %s, %s", instance_name, device_path, mountpoint) - volume_info = _parse_volume_info(device_path, mountpoint) + vol_rec = VolumeHelper.parse_volume_info(device_path, mountpoint) # Create the iSCSI SR, and the PDB through which hosts access SRs. # But first, retrieve target info, like Host, IQN, LUN and SCSIID - target = yield self._get_target(volume_info) - label = 'SR-%s' % volume_info['volumeId'] - description = 'Attached-to:%s' % instance_name - # Create SR and check the physical space available for the VDI allocation - sr_ref = yield self._create_sr(target, label, description) - disk_size = int(target['size']) - #disk_size = yield self._get_sr_available_space(sr_ref) - # Create VDI and attach VBD to VM - vm_ref = yield self._lookup(instance_name) - logging.debug("Mounting disk of: %s GB", (disk_size / (1024*1024*1024.0))) + label = 'SR-%s' % vol_rec['volumeId'] + description = 'Disk-for:%s' % instance_name + # Create SR + sr_ref = yield VolumeHelper.create_iscsi_storage(self._session, + vol_rec['targetHost'], + vol_rec['targetPort'], + vol_rec['targeIQN'], + '', # no CHAP auth + '', + label, + description) + # Introduce VDI and attach VBD to VM try: - vdi_ref = yield self._create_vdi(sr_ref, disk_size, - 'user', volume_info['volumeId'], '', - False, False) + vdi_ref = yield VolumeHelper.introduce_vdi(self._session, sr_ref) except Exception, exc: logging.warn(exc) - yield self._destroy_sr(sr_ref) + yield VolumeHelper.destroy_iscsi_storage(self._session, sr_ref) raise Exception('Unable to create VDI on SR %s for instance %s' % (sr_ref, instance_name)) else: try: - userdevice = 2 # FIXME: this depends on the numbers of attached disks - vbd_ref = yield self._create_vbd(vm_ref, vdi_ref, userdevice, False, True, False) + vbd_ref = yield VMHelper.create_vbd(self._session, + vm_ref, vdi_ref, + vol_rec['deviceNumber'], + False) except Exception, exc: logging.warn(exc) - yield self._destroy_sr(sr_ref) + yield VolumeHelper.destroy_iscsi_storage(self._session, sr_ref) raise Exception('Unable to create VBD on SR %s for instance %s' % (sr_ref, instance_name)) else: try: - raise Exception('') - task = yield self._call_xenapi('Async.VBD.plug', vbd_ref) - yield self._wait_for_task(task) + #raise Exception('') + task = yield self._session.call_xenapi('Async.VBD.plug', + vbd_ref) + yield self._session.wait_for_task(task) except Exception, exc: logging.warn(exc) - yield self._destroy_sr(sr_ref) - raise Exception('Unable to attach volume to instance %s' % instance_name) - + yield VolumeHelper.destroy_iscsi_storage(self._session, + sr_ref) + raise Exception('Unable to attach volume to instance %s' % + instance_name) yield True @defer.inlineCallbacks def detach_volume(self, instance_name, mountpoint): - logging.debug("Detach_volume: %s, %s, %s", instance_name, mountpoint) + # Before we start, check that the VM exists + vm_ref = yield VMHelper.lookup(self._session, instance_name) + if vm_ref is None: + raise Exception('Instance %s does not exist' % instance_name) # Detach VBD from VM - # Forget SR/PDB info associated with host - # TODO: can we avoid destroying the SR every time we detach? - yield True \ No newline at end of file + logging.debug("Detach_volume: %s, %s", instance_name, mountpoint) + device_number = VolumeHelper.mountpoint_to_number(mountpoint) + try: + vbd_ref = yield VMHelper.find_vbd_by_number(self._session, + vm_ref, device_number) + except Exception, exc: + logging.warn(exc) + raise Exception('Unable to locate volume %s' % mountpoint) + else: + try: + sr_ref = yield VolumeHelper.find_sr_from_vbd(self._session, + vbd_ref) + yield VMHelper.unplug_vbd(self._session, vbd_ref) + except Exception, exc: + logging.warn(exc) + raise Exception('Unable to detach volume %s' % mountpoint) + try: + yield VMHelper.destroy_vbd(self._session, vbd_ref) + except Exception, exc: + logging.warn(exc) + # Forget SR + yield VolumeHelper.destroy_iscsi_storage(self._session, sr_ref) + yield True -- cgit From 4b74a1b243d87d53e660029728d12a9c067deeac Mon Sep 17 00:00:00 2001 From: Rick Clark Date: Tue, 30 Nov 2010 13:08:39 -0600 Subject: Cleaned up pep8 errors --- nova/virt/libvirt_conn.py | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 09cb29773..81dbbaad5 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -467,13 +467,13 @@ class LibvirtConnection(object): process_input=process_input, check_exit_code=check_exit_code) - # For now, we assume that if we're not using a kernel, we're using a - # partitioned disk image where the target partition is the first + # For now, we assume that if we're not using a kernel, we're using a + # partitioned disk image where the target partition is the first # partition target_partition = None if not using_kernel: target_partition = "1" - + key = str(inst['key_data']) net = None network_ref = db.network_get_by_instance(context.get_admin_context(), @@ -493,11 +493,10 @@ class LibvirtConnection(object): inst['name'], inst.image_id) if net: logging.info('instance %s: injecting net into image %s', - inst['name'], inst.image_id) - execute=execute) + inst['name'], inst.image_id) try: yield disk.inject_data(basepath('disk-raw'), key, net, - partition=target_partition, + partition=target_partition, execute=execute) except Exception as e: # This could be a windows image, or a vmdk format disk @@ -557,7 +556,7 @@ class LibvirtConnection(object): if xml_info['ramdisk_id'] or xml_info['kernel_id']: xml_info['disk'] = xml_info['basepath'] + "/disk" - xml = str(Template(self.libvirt_xml, searchList=[ xml_info ] )) + xml = str(Template(self.libvirt_xml, searchList=[xml_info])) logging.debug('instance %s: finished toXML method', instance['name']) return xml -- cgit From f26489ef1ad2a7df0e9f72a8c9ad4f2e3a65ae57 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Wed, 1 Dec 2010 12:02:02 +0000 Subject: minor refactoring --- nova/virt/xenapi/novadeps.py | 82 ++++++++++++++++++++++++++++++++++++++++ nova/virt/xenapi/volume_utils.py | 77 ------------------------------------- nova/virt/xenapi/volumeops.py | 6 ++- 3 files changed, 86 insertions(+), 79 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py index ba62468fb..db51982a6 100644 --- a/nova/virt/xenapi/novadeps.py +++ b/nova/virt/xenapi/novadeps.py @@ -14,6 +14,9 @@ # License for the specific language governing permissions and limitations # under the License. +import re +import string + from nova import db from nova import flags from nova import process @@ -32,6 +35,15 @@ XENAPI_POWER_STATE = { 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} +from nova import flags + +FLAGS = flags.FLAGS + +#FIXME: replace with proper target discovery +flags.DEFINE_string('target_host', None, 'iSCSI Target Host') +flags.DEFINE_string('target_port', '3260', 'iSCSI Target Port, 3260 Default') +flags.DEFINE_string('iqn_prefix', 'iqn.2010-10.org.openstack', 'IQN Prefix') + class Instance(object): @@ -101,3 +113,73 @@ class User(object): @classmethod def get_secret(self, user): return user.secret + + +class Volume(object): + + @classmethod + def parse_volume_info(self, device_path, mountpoint): + # Because XCP/XS want a device number instead of a mountpoint + device_number = Volume.mountpoint_to_number(mountpoint) + volume_id = Volume.get_volume_id(device_path) + target_host = Volume.get_target_host(device_path) + target_port = Volume.get_target_port(device_path) + target_iqn = Volume.get_iqn(device_path) + + if (device_number < 0) or \ + (volume_id is None) or \ + (target_host is None) or \ + (target_iqn is None): + raise Exception('Unable to obtain target information %s, %s' % + (device_path, mountpoint)) + + volume_info = {} + volume_info['deviceNumber'] = device_number + volume_info['volumeId'] = volume_id + volume_info['targetHost'] = target_host + volume_info['targetPort'] = target_port + volume_info['targeIQN'] = target_iqn + return volume_info + + @classmethod + def mountpoint_to_number(self, mountpoint): + if mountpoint.startswith('/dev/'): + mountpoint = mountpoint[5:] + if re.match('^[hs]d[a-p]$', mountpoint): + return (ord(mountpoint[2:3]) - ord('a')) + elif re.match('^vd[a-p]$', mountpoint): + return (ord(mountpoint[2:3]) - ord('a')) + elif re.match('^[0-9]+$', mountpoint): + return string.atoi(mountpoint, 10) + else: + logging.warn('Mountpoint cannot be translated: %s', mountpoint) + return -1 + + @classmethod + def get_volume_id(self, n): + # FIXME: n must contain at least the volume_id + # /vol- is for remote volumes + # -vol- is for local volumes + # see compute/manager->setup_compute_volume + volume_id = n[n.find('/vol-') + 1:] + if volume_id == n: + volume_id = n[n.find('-vol-') + 1:].replace('--', '-') + return volume_id + + @classmethod + def get_target_host(self, n): + # FIXME: if n is none fall back on flags + if n is None or FLAGS.target_host: + return FLAGS.target_host + + @classmethod + def get_target_port(self, n): + # FIXME: if n is none fall back on flags + return FLAGS.target_port + + @classmethod + def get_iqn(self, n): + # FIXME: n must contain at least the volume_id + volume_id = Volume.get_volume_id(n) + if n is None or FLAGS.iqn_prefix: + return '%s:%s' % (FLAGS.iqn_prefix, volume_id) diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index b982ac124..3b3e8894c 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -20,20 +20,10 @@ and storage repositories """ import logging -import re -import string from twisted.internet import defer from nova import utils -from nova import flags - -FLAGS = flags.FLAGS - -#FIXME: replace with proper target discovery -flags.DEFINE_string('target_host', None, 'iSCSI Target Host') -flags.DEFINE_string('target_port', '3260', 'iSCSI Target Port, 3260 Default') -flags.DEFINE_string('iqn_prefix', 'iqn.2010-10.org.openstack', 'IQN Prefix') class VolumeHelper(): @@ -141,70 +131,3 @@ class VolumeHelper(): vdi_rec['location'], vdi_rec['xenstore_data'], vdi_rec['sm_config']) - - @classmethod - def parse_volume_info(self, device_path, mountpoint): - # Because XCP/XS want a device number instead of a mountpoint - device_number = VolumeHelper.mountpoint_to_number(mountpoint) - volume_id = _get_volume_id(device_path) - target_host = _get_target_host(device_path) - target_port = _get_target_port(device_path) - target_iqn = _get_iqn(device_path) - - if (device_number < 0) or \ - (volume_id is None) or \ - (target_host is None) or \ - (target_iqn is None): - raise Exception('Unable to obtain target information %s, %s' % - (device_path, mountpoint)) - - volume_info = {} - volume_info['deviceNumber'] = device_number - volume_info['volumeId'] = volume_id - volume_info['targetHost'] = target_host - volume_info['targetPort'] = target_port - volume_info['targeIQN'] = target_iqn - return volume_info - - @classmethod - def mountpoint_to_number(self, mountpoint): - if mountpoint.startswith('/dev/'): - mountpoint = mountpoint[5:] - if re.match('^[hs]d[a-p]$', mountpoint): - return (ord(mountpoint[2:3]) - ord('a')) - elif re.match('^vd[a-p]$', mountpoint): - return (ord(mountpoint[2:3]) - ord('a')) - elif re.match('^[0-9]+$', mountpoint): - return string.atoi(mountpoint, 10) - else: - logging.warn('Mountpoint cannot be translated: %s', mountpoint) - return -1 - - -def _get_volume_id(n): - # FIXME: n must contain at least the volume_id - # /vol- is for remote volumes - # -vol- is for local volumes - # see compute/manager->setup_compute_volume - volume_id = n[n.find('/vol-') + 1:] - if volume_id == n: - volume_id = n[n.find('-vol-') + 1:].replace('--', '-') - return volume_id - - -def _get_target_host(n): - # FIXME: if n is none fall back on flags - if n is None or FLAGS.target_host: - return FLAGS.target_host - - -def _get_target_port(n): - # FIXME: if n is none fall back on flags - return FLAGS.target_port - - -def _get_iqn(n): - # FIXME: n must contain at least the volume_id - volume_id = _get_volume_id(n) - if n is None or FLAGS.iqn_prefix: - return '%s:%s' % (FLAGS.iqn_prefix, volume_id) diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index d5c309240..ec4343329 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -24,6 +24,8 @@ from twisted.internet import defer from volume_utils import VolumeHelper from vm_utils import VMHelper +from novadeps import Volume + class VolumeOps(object): def __init__(self, session): @@ -38,9 +40,9 @@ class VolumeOps(object): # NOTE: No Resource Pool concept so far logging.debug("Attach_volume: %s, %s, %s", instance_name, device_path, mountpoint) - vol_rec = VolumeHelper.parse_volume_info(device_path, mountpoint) # Create the iSCSI SR, and the PDB through which hosts access SRs. # But first, retrieve target info, like Host, IQN, LUN and SCSIID + vol_rec = Volume.parse_volume_info(device_path, mountpoint) label = 'SR-%s' % vol_rec['volumeId'] description = 'Disk-for:%s' % instance_name # Create SR @@ -95,7 +97,7 @@ class VolumeOps(object): raise Exception('Instance %s does not exist' % instance_name) # Detach VBD from VM logging.debug("Detach_volume: %s, %s", instance_name, mountpoint) - device_number = VolumeHelper.mountpoint_to_number(mountpoint) + device_number = Volume.mountpoint_to_number(mountpoint) try: vbd_ref = yield VMHelper.find_vbd_by_number(self._session, vm_ref, device_number) -- cgit From fd44f9d2ec1d101960642a68d45bffc9c37f0d7f Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 2 Dec 2010 12:13:56 +0000 Subject: moved flags into xenapi/novadeps.py --- nova/virt/xenapi/novadeps.py | 40 ++++++++++++++++++++++++++++++++++++++++ nova/virt/xenapi_conn.py | 31 ++++++------------------------- 2 files changed, 46 insertions(+), 25 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py index ba62468fb..985998486 100644 --- a/nova/virt/xenapi/novadeps.py +++ b/nova/virt/xenapi/novadeps.py @@ -33,6 +33,46 @@ XENAPI_POWER_STATE = { 'Crashed': power_state.CRASHED} +flags.DEFINE_string('xenapi_connection_url', + None, + 'URL for connection to XenServer/Xen Cloud Platform.' + ' Required if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_username', + 'root', + 'Username for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_password', + None, + 'Password for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_float('xenapi_task_poll_interval', + 0.5, + 'The interval used for polling of remote tasks ' + '(Async.VM.start, etc). Used only if ' + 'connection_type=xenapi.') + + +class Configuration(object): + def __init__(self): + self._flags = flags.FLAGS + + @property + def xenapi_connection_url(self): + return self._flags.xenapi_connection_url + + @property + def xenapi_connection_username(self): + return self._flags.xenapi_connection_username + + @property + def xenapi_connection_password(self): + return self._flags.xenapi_connection_password + + @property + def xenapi_task_poll_interval(self): + return self._flags.xenapi_task_poll_interval + + class Instance(object): @classmethod diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 0a73b4774..51091ab19 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -53,33 +53,14 @@ import xmlrpclib from twisted.internet import defer from twisted.internet import reactor -from nova import flags from nova import utils from xenapi.vmops import VMOps from xenapi.volumeops import VolumeOps +from xenapi.novadeps import Configuration XenAPI = None - - -FLAGS = flags.FLAGS -flags.DEFINE_string('xenapi_connection_url', - None, - 'URL for connection to XenServer/Xen Cloud Platform.' - ' Required if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_username', - 'root', - 'Username for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_password', - None, - 'Password for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_float('xenapi_task_poll_interval', - 0.5, - 'The interval used for polling of remote tasks ' - '(Async.VM.start, etc). Used only if ' - 'connection_type=xenapi.') +Config = Configuration() def get_connection(_): @@ -90,9 +71,9 @@ def get_connection(_): global XenAPI if XenAPI is None: XenAPI = __import__('XenAPI') - url = FLAGS.xenapi_connection_url - username = FLAGS.xenapi_connection_username - password = FLAGS.xenapi_connection_password + url = Config.xenapi_connection_url + username = Config.xenapi_connection_username + password = Config.xenapi_connection_password if not url or password is None: raise Exception('Must specify xenapi_connection_url, ' 'xenapi_connection_username (optionally), and ' @@ -177,7 +158,7 @@ class XenAPISession(object): #logging.debug('Polling task %s...', task) status = self._session.xenapi.task.get_status(task) if status == 'pending': - reactor.callLater(FLAGS.xenapi_task_poll_interval, + reactor.callLater(Config.xenapi_task_poll_interval(), self._poll_task, task, deferred) elif status == 'success': result = self._session.xenapi.task.get_result(task) -- cgit From b684bc26fc7c7f41cf90e0294af35b2bda243733 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 2 Dec 2010 12:36:05 +0000 Subject: typo fix --- nova/virt/xenapi_conn.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 51091ab19..948fade7e 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -158,7 +158,7 @@ class XenAPISession(object): #logging.debug('Polling task %s...', task) status = self._session.xenapi.task.get_status(task) if status == 'pending': - reactor.callLater(Config.xenapi_task_poll_interval(), + reactor.callLater(Config.xenapi_task_poll_interval, self._poll_task, task, deferred) elif status == 'success': result = self._session.xenapi.task.get_result(task) -- cgit From e4cfd7f3fe7d3c50d65c61abf21bf998fde85147 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 2 Dec 2010 14:09:23 +0000 Subject: minor refactoring after merge --- nova/virt/xenapi/novadeps.py | 28 ++++++++++++++++++++-------- nova/virt/xenapi_conn.py | 5 ++++- 2 files changed, 24 insertions(+), 9 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py index b4802764e..aa3535162 100644 --- a/nova/virt/xenapi/novadeps.py +++ b/nova/virt/xenapi/novadeps.py @@ -36,8 +36,6 @@ XENAPI_POWER_STATE = { 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} -FLAGS = flags.FLAGS - flags.DEFINE_string('xenapi_connection_url', None, 'URL for connection to XenServer/Xen Cloud Platform.' @@ -81,6 +79,21 @@ class Configuration(object): def xenapi_task_poll_interval(self): return self._flags.xenapi_task_poll_interval + @property + def target_host(self): + return self._flags.target_host + + @property + def target_port(self): + return self._flags.target_port + + @property + def iqn_prefix(self): + return self._flags.iqn_prefix + + +config = Configuration() + class Instance(object): @@ -206,18 +219,17 @@ class Volume(object): @classmethod def get_target_host(self, n): # FIXME: if n is none fall back on flags - if n is None or FLAGS.target_host: - return FLAGS.target_host + if n is None or config.target_host: + return config.target_host @classmethod def get_target_port(self, n): # FIXME: if n is none fall back on flags - return FLAGS.target_port + return config.target_port @classmethod def get_iqn(self, n): # FIXME: n must contain at least the volume_id volume_id = Volume.get_volume_id(n) - if n is None or FLAGS.iqn_prefix: - return '%s:%s' % (FLAGS.iqn_prefix, volume_id) - + if n is None or config.iqn_prefix: + return '%s:%s' % (config.iqn_prefix, volume_id) diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 948fade7e..d3f66b12c 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -44,7 +44,10 @@ reactor thread if the VM.get_by_name_label or VM.get_record calls block. :xenapi_task_poll_interval: The interval (seconds) used for polling of remote tasks (Async.VM.start, etc) (default: 0.5). - +:target_host: the iSCSI Target Host IP address, i.e. the IP + address for the nova-volume host +:target_port: iSCSI Target Port, 3260 Default +:iqn_prefix: IQN Prefix, e.g. 'iqn.2010-10.org.openstack' """ import logging -- cgit From 1637de18a86712c52d89441c154a8e9aae6fb503 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 6 Dec 2010 12:42:34 +0000 Subject: pylint and pep8 fixes --- nova/virt/xenapi/network_utils.py | 13 ++++++--- nova/virt/xenapi/novadeps.py | 59 ++++++++++++++++++++++++++++----------- nova/virt/xenapi/vm_utils.py | 30 ++++++++++++-------- nova/virt/xenapi/vmops.py | 18 +++++++++--- nova/virt/xenapi/volumeops.py | 2 ++ nova/virt/xenapi_conn.py | 15 +++++++++- 6 files changed, 101 insertions(+), 36 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index b58b9159c..8cb4cce3a 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -15,20 +15,25 @@ # under the License. """ -Helper methods for operations related to the management of network records and -their attributes like bridges, PIFs, QoS, as well as their lookup functions. +Helper methods for operations related to the management of network +records and their attributes like bridges, PIFs, QoS, as well as +their lookup functions. """ from twisted.internet import defer class NetworkHelper(): - def __init__(self, session): + """ + The class that wraps the helper methods together. + """ + def __init__(self): return @classmethod @defer.inlineCallbacks - def find_network_with_bridge(self, session, bridge): + def find_network_with_bridge(cls, session, bridge): + """ Return the network on which the bridge is attached, if found """ expr = 'field "bridge" = "%s"' % bridge networks = yield session.call_xenapi('network.get_all_records_where', expr) diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py index 985998486..a68fd8e77 100644 --- a/nova/virt/xenapi/novadeps.py +++ b/nova/virt/xenapi/novadeps.py @@ -14,10 +14,14 @@ # License for the specific language governing permissions and limitations # under the License. +""" +It captures all the inner details of Nova classes and avoid their exposure +to the implementation of the XenAPI module. One benefit of this, is to avoid +sprawl of code changes +""" + from nova import db from nova import flags -from nova import process -from nova import utils from nova import context from nova.compute import power_state @@ -53,91 +57,114 @@ flags.DEFINE_float('xenapi_task_poll_interval', class Configuration(object): + """ Wraps Configuration details into common class """ def __init__(self): self._flags = flags.FLAGS @property def xenapi_connection_url(self): + """ Return the connection url """ return self._flags.xenapi_connection_url @property def xenapi_connection_username(self): + """ Return the username used for the connection """ return self._flags.xenapi_connection_username @property def xenapi_connection_password(self): + """ Return the password used for the connection """ return self._flags.xenapi_connection_password @property def xenapi_task_poll_interval(self): + """ Return the poll interval for the connection """ return self._flags.xenapi_task_poll_interval class Instance(object): + """ Wraps up instance specifics """ @classmethod - def get_name(self, instance): + def get_name(cls, instance): + """ The name of the instance """ return instance.name @classmethod - def get_type(self, instance): + def get_type(cls, instance): + """ The type of the instance """ return instance_types.INSTANCE_TYPES[instance.instance_type] @classmethod - def get_project(self, instance): + def get_project(cls, instance): + """ The project the instance belongs """ return AuthManager().get_project(instance.project_id) @classmethod - def get_project_id(self, instance): + def get_project_id(cls, instance): + """ The id of the project the instance belongs """ return instance.project_id @classmethod - def get_image_id(self, instance): + def get_image_id(cls, instance): + """ The instance's image id """ return instance.image_id @classmethod - def get_kernel_id(self, instance): + def get_kernel_id(cls, instance): + """ The instance's kernel id """ return instance.kernel_id @classmethod - def get_ramdisk_id(self, instance): + def get_ramdisk_id(cls, instance): + """ The instance's ramdisk id """ return instance.ramdisk_id @classmethod - def get_network(self, instance): + def get_network(cls, instance): + """ The network the instance is connected to """ # TODO: is ge_admin_context the right context to retrieve? return db.project_get_network(context.get_admin_context(), instance.project_id) @classmethod - def get_mac(self, instance): + def get_mac(cls, instance): + """ The instance's MAC address """ return instance.mac_address @classmethod - def get_user(self, instance): + def get_user(cls, instance): + """ The owner of the instance """ return AuthManager().get_user(instance.user_id) class Network(object): + """ Wraps up network specifics """ @classmethod - def get_bridge(self, network): + def get_bridge(cls, network): + """ the bridge for the network """ return network.bridge class Image(object): + """ Wraps up image specifics """ @classmethod - def get_url(self, image): + def get_url(cls, image): + """ the url to get the image from """ return images.image_url(image) class User(object): + """ Wraps up user specifics """ @classmethod - def get_access(self, user, project): + def get_access(cls, user, project): + """ access key """ return AuthManager().get_access_key(user, project) @classmethod - def get_secret(self, user): + def get_secret(cls, user): + """ access secret """ return user.secret diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index b68df2791..002f00c03 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -31,12 +31,15 @@ from novadeps import User class VMHelper(): - def __init__(self, session): + """ + The class that wraps the helper methods together. + """ + def __init__(self): return @classmethod @defer.inlineCallbacks - def create_vm(self, session, instance, kernel, ramdisk): + def create_vm(cls, session, instance, kernel, ramdisk): """Create a VM record. Returns a Deferred that gives the new VM reference.""" @@ -80,7 +83,7 @@ class VMHelper(): @classmethod @defer.inlineCallbacks - def create_vbd(self, session, vm_ref, vdi_ref, userdevice, bootable): + def create_vbd(cls, session, vm_ref, vdi_ref, userdevice, bootable): """Create a VBD record. Returns a Deferred that gives the new VBD reference.""" @@ -105,7 +108,7 @@ class VMHelper(): @classmethod @defer.inlineCallbacks - def create_vif(self, session, vm_ref, network_ref, mac_address): + def create_vif(cls, session, vm_ref, network_ref, mac_address): """Create a VIF record. Returns a Deferred that gives the new VIF reference.""" @@ -127,7 +130,7 @@ class VMHelper(): @classmethod @defer.inlineCallbacks - def fetch_image(self, session, image, user, project, use_sr): + def fetch_image(cls, session, image, user, project, use_sr): """use_sr: True to put the image as a VDI in an SR, False to place it on dom0's filesystem. The former is for VM disks, the latter for its kernel and ramdisk (if external kernels are being used). @@ -135,7 +138,7 @@ class VMHelper(): url = Image.get_url(image) access = User.get_access(user, project) - logging.debug("Asking xapi to fetch %s as %s" % (url, access)) + logging.debug("Asking xapi to fetch %s as %s", url, access) fn = use_sr and 'get_vdi' or 'get_kernel' args = {} args['src_url'] = url @@ -149,11 +152,13 @@ class VMHelper(): @classmethod @utils.deferredToThread - def lookup(self, session, i): + def lookup(cls, session, i): + """ Look the instance i up, and returns it if available """ return VMHelper.lookup_blocking(session, i) @classmethod - def lookup_blocking(self, session, i): + def lookup_blocking(cls, session, i): + """ Synchronous lookup """ vms = session.get_xenapi().VM.get_by_name_label(i) n = len(vms) if n == 0: @@ -165,11 +170,13 @@ class VMHelper(): @classmethod @utils.deferredToThread - def lookup_vm_vdis(self, session, vm): + def lookup_vm_vdis(cls, session, vm): + """ Look for the VDIs that are attached to the VM """ return VMHelper.lookup_vm_vdis_blocking(session, vm) @classmethod - def lookup_vm_vdis_blocking(self, session, vm): + def lookup_vm_vdis_blocking(cls, session, vm): + """ Synchronous lookup_vm_vdis """ # Firstly we get the VBDs, then the VDIs. # TODO: do we leave the read-only devices? vbds = session.get_xenapi().VM.get_VBDs(vm) @@ -180,7 +187,8 @@ class VMHelper(): vdi = session.get_xenapi().VBD.get_VDI(vbd) # Test valid VDI record = session.get_xenapi().VDI.get_record(vdi) - except Exception, exc: + logging.debug('VDI %s is still available', record['uuid']) + except XenAPI.Failure, exc: logging.warn(exc) else: vdis.append(vdi) diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index d6ea5e7db..7ea8be999 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -31,15 +31,20 @@ from network_utils import NetworkHelper class VMOps(object): + """ + Management class for VM-related tasks + """ def __init__(self, session): self._session = session def list_instances(self): + """ List VM instances """ return [self._session.get_xenapi().VM.get_name_label(vm) \ for vm in self._session.get_xenapi().VM.get_all()] @defer.inlineCallbacks def spawn(self, instance): + """ Create VM instance """ vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) if vm is not None: raise Exception('Attempted to create non-unique name %s' % @@ -71,6 +76,7 @@ class VMOps(object): @defer.inlineCallbacks def reboot(self, instance): + """ Reboot VM instance """ instance_name = Instance.get_name(instance) vm = yield VMHelper.lookup(self._session, instance_name) if vm is None: @@ -80,6 +86,7 @@ class VMOps(object): @defer.inlineCallbacks def destroy(self, instance): + """ Destroy VM instance """ vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) if vm is None: # Don't complain, just return. This lets us clean up instances @@ -91,7 +98,7 @@ class VMOps(object): task = yield self._session.call_xenapi('Async.VM.hard_shutdown', vm) yield self._session.wait_for_task(task) - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) # Disk clean-up if vdis: @@ -100,15 +107,16 @@ class VMOps(object): task = yield self._session.call_xenapi('Async.VDI.destroy', vdi) yield self._session.wait_for_task(task) - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) try: task = yield self._session.call_xenapi('Async.VM.destroy', vm) yield self._session.wait_for_task(task) - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) def get_info(self, instance_id): + """ Return data about VM instance """ vm = VMHelper.lookup_blocking(self._session, instance_id) if vm is None: raise Exception('instance not present %s' % instance_id) @@ -120,4 +128,6 @@ class VMOps(object): 'cpu_time': 0} def get_console_output(self, instance): - return 'FAKE CONSOLE OUTPUT' + """ Return snapshot of console """ + # TODO: implement this to fix pylint! + return 'FAKE CONSOLE OUTPUT of instance' diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index 23f79adf7..a4c7a3861 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -24,7 +24,9 @@ class VolumeOps(object): self._session = session def attach_volume(self, instance_name, device_path, mountpoint): + # FIXME: that's going to be sorted when iscsi-xenapi lands in branch return True def detach_volume(self, instance_name, mountpoint): + # FIXME: that's going to be sorted when iscsi-xenapi lands in branch return True diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 948fade7e..e5e67128a 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -83,47 +83,59 @@ def get_connection(_): class XenAPIConnection(object): + """ A connection to XenServer or Xen Cloud Platform """ def __init__(self, url, user, pw): session = XenAPISession(url, user, pw) self._vmops = VMOps(session) self._volumeops = VolumeOps(session) def list_instances(self): + """ List VM instances """ return self._vmops.list_instances() def spawn(self, instance): + """ Create VM instance """ self._vmops.spawn(instance) def reboot(self, instance): + """ Reboot VM instance """ self._vmops.reboot(instance) def destroy(self, instance): + """ Destroy VM instance """ self._vmops.destroy(instance) def get_info(self, instance_id): + """ Return data about VM instance """ return self._vmops.get_info(instance_id) def get_console_output(self, instance): + """ Return snapshot of console """ return self._vmops.get_console_output(instance) def attach_volume(self, instance_name, device_path, mountpoint): + """ Attach volume storage to VM instance """ return self._volumeops.attach_volume(instance_name, device_path, mountpoint) def detach_volume(self, instance_name, mountpoint): + """ Detach volume storage to VM instance """ return self._volumeops.detach_volume(instance_name, mountpoint) class XenAPISession(object): + """ The session to invoke XenAPI SDK calls """ def __init__(self, url, user, pw): self._session = XenAPI.Session(url) self._session.login_with_password(user, pw) def get_xenapi(self): + """ Return the xenapi object """ return self._session.xenapi def get_xenapi_host(self): + """ Return the xenapi host """ return self._session.xenapi.session.get_this_host(self._session.handle) @utils.deferredToThread @@ -170,12 +182,13 @@ class XenAPISession(object): error_info) deferred.errback(XenAPI.Failure(error_info)) #logging.debug('Polling task %s done.', task) - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) deferred.errback(exc) def _unwrap_plugin_exceptions(func, *args, **kwargs): + """ Parse exception details """ try: return func(*args, **kwargs) except XenAPI.Failure, exc: -- cgit From f25a25d2693d603eb9a6f87d9629d53542219736 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 6 Dec 2010 15:53:35 +0000 Subject: moved XenAPI namespace definition into xenapi/__init__.py --- nova/virt/xenapi/__init__.py | 11 +++++++++++ nova/virt/xenapi/vm_utils.py | 1 + nova/virt/xenapi/vmops.py | 1 + nova/virt/xenapi_conn.py | 7 +------ 4 files changed, 14 insertions(+), 6 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index 3d598c463..ece430407 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -13,3 +13,14 @@ # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. + +""" +This is loaded late so that there's no need to install this library +when not using XenAPI +""" + +XenAPI = None +global XenAPI + +if XenAPI is None: + XenAPI = __import__('XenAPI') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 002f00c03..52ab2901d 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -20,6 +20,7 @@ their attributes like VDIs, VIFs, as well as their lookup functions. """ import logging +import XenAPI from twisted.internet import defer diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 7ea8be999..3db86f179 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -19,6 +19,7 @@ Management class for VM-related functions (spawn, reboot, etc). """ import logging +import XenAPI from twisted.internet import defer diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index e5e67128a..2839a753c 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -58,19 +58,14 @@ from nova import utils from xenapi.vmops import VMOps from xenapi.volumeops import VolumeOps from xenapi.novadeps import Configuration +from xenapi import XenAPI -XenAPI = None Config = Configuration() def get_connection(_): """Note that XenAPI doesn't have a read-only connection mode, so the read_only parameter is ignored.""" - # This is loaded late so that there's no need to install this - # library when not using XenAPI. - global XenAPI - if XenAPI is None: - XenAPI = __import__('XenAPI') url = Config.xenapi_connection_url username = Config.xenapi_connection_username password = Config.xenapi_connection_password -- cgit From ee71c0accbb540bcb9d08cdcdc8b659f29a0edd6 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 6 Dec 2010 19:06:32 +0000 Subject: added interim solution for target discovery. Now info can either be passed via flags or discovered via iscsiadm. Long term solution is to add a few more fields to the db in the iscsi_target table with the necessary info and modify the iscsi driver to set them --- nova/virt/xenapi/novadeps.py | 89 ++++++++++++++++++++++++++++++++++--------- nova/virt/xenapi/volumeops.py | 2 +- 2 files changed, 71 insertions(+), 20 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py index 65576019e..66c8233b8 100644 --- a/nova/virt/xenapi/novadeps.py +++ b/nova/virt/xenapi/novadeps.py @@ -27,6 +27,9 @@ import string from nova import db from nova import flags from nova import context +from nova import process + +from twisted.internet import defer from nova.compute import power_state from nova.auth.manager import AuthManager @@ -193,15 +196,28 @@ class User(object): class Volume(object): + """ Wraps up volume specifics """ @classmethod - def parse_volume_info(self, device_path, mountpoint): - # Because XCP/XS want a device number instead of a mountpoint + @defer.inlineCallbacks + def parse_volume_info(cls, device_path, mountpoint): + """ + Parse device_path and mountpoint as they can be used by XenAPI. + In particular, the mountpoint (e.g. /dev/sdc) must be translated + into a numeric literal. + FIXME: As for device_path, currently cannot be used as it is, + because it does not contain target information. As for interim + solution, target details are passed either via Flags or obtained + by iscsiadm. Long-term solution is to add a few more fields to the + db in the iscsi_target table with the necessary info and modify + the iscsi driver to set them. + """ device_number = Volume.mountpoint_to_number(mountpoint) volume_id = Volume.get_volume_id(device_path) - target_host = Volume.get_target_host(device_path) - target_port = Volume.get_target_port(device_path) - target_iqn = Volume.get_iqn(device_path) + (iscsi_name, iscsi_portal) = yield Volume.get_target(volume_id) + target_host = Volume.get_target_host(iscsi_portal) + target_port = Volume.get_target_port(iscsi_portal) + target_iqn = Volume.get_iqn(iscsi_name, volume_id) if (device_number < 0) or \ (volume_id is None) or \ @@ -216,10 +232,11 @@ class Volume(object): volume_info['targetHost'] = target_host volume_info['targetPort'] = target_port volume_info['targeIQN'] = target_iqn - return volume_info + defer.returnValue(volume_info) @classmethod - def mountpoint_to_number(self, mountpoint): + def mountpoint_to_number(cls, mountpoint): + """ Translate a mountpoint like /dev/sdc into a numberic """ if mountpoint.startswith('/dev/'): mountpoint = mountpoint[5:] if re.match('^[hs]d[a-p]$', mountpoint): @@ -233,8 +250,9 @@ class Volume(object): return -1 @classmethod - def get_volume_id(self, n): - # FIXME: n must contain at least the volume_id + def get_volume_id(cls, n): + """ Retrieve the volume id from device_path """ + # n must contain at least the volume_id # /vol- is for remote volumes # -vol- is for local volumes # see compute/manager->setup_compute_volume @@ -244,19 +262,52 @@ class Volume(object): return volume_id @classmethod - def get_target_host(self, n): - # FIXME: if n is none fall back on flags - if n is None or config.target_host: + def get_target_host(cls, n): + """ Retrieve target host """ + if n: + return n[0:n.find(':')] + elif n is None or config.target_host: return config.target_host @classmethod - def get_target_port(self, n): - # FIXME: if n is none fall back on flags - return config.target_port + def get_target_port(cls, n): + """ Retrieve target port """ + if n: + return n[n.find(':') + 1:] + elif n is None or config.target_port: + return config.target_port @classmethod - def get_iqn(self, n): - # FIXME: n must contain at least the volume_id - volume_id = Volume.get_volume_id(n) - if n is None or config.iqn_prefix: + def get_iqn(cls, n, id): + """ Retrieve target IQN """ + if n: + return n + elif n is None or config.iqn_prefix: + volume_id = Volume.get_volume_id(id) return '%s:%s' % (config.iqn_prefix, volume_id) + + @classmethod + @defer.inlineCallbacks + def get_target(self, volume_id): + """ + Gets iscsi name and portal from volume name and host. + For this method to work the following are needed: + 1) volume_ref['host'] to resolve the public IP address + 2) ietd to listen only to the public network interface + If any of the two are missing, fall back on Flags + """ + volume_ref = db.volume_get_by_ec2_id(context.get_admin_context(), + volume_id) + + (r, _e) = yield process.simple_execute("sudo iscsiadm -m discovery -t " + "sendtargets -p %s" % + volume_ref['host']) + if len(_e) == 0: + for target in r.splitlines(): + if volume_id in target: + (location, _sep, iscsi_name) = target.partition(" ") + break + iscsi_portal = location.split(",")[0] + defer.returnValue((iscsi_name, iscsi_portal)) + else: + defer.returnValue((None, None)) diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index 6c48f6491..a052aaf95 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -47,7 +47,7 @@ class VolumeOps(object): instance_name, device_path, mountpoint) # Create the iSCSI SR, and the PDB through which hosts access SRs. # But first, retrieve target info, like Host, IQN, LUN and SCSIID - vol_rec = Volume.parse_volume_info(device_path, mountpoint) + vol_rec = yield Volume.parse_volume_info(device_path, mountpoint) label = 'SR-%s' % vol_rec['volumeId'] description = 'Disk-for:%s' % instance_name # Create SR -- cgit From 06c52051005f5e43a1f543e2d1c5922aa91c7918 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 6 Dec 2010 19:29:00 +0000 Subject: minor changes to docstrings --- nova/virt/xenapi/novadeps.py | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py index 66c8233b8..3680a5dd2 100644 --- a/nova/virt/xenapi/novadeps.py +++ b/nova/virt/xenapi/novadeps.py @@ -60,10 +60,15 @@ flags.DEFINE_float('xenapi_task_poll_interval', 'The interval used for polling of remote tasks ' '(Async.VM.start, etc). Used only if ' 'connection_type=xenapi.') -#FIXME: replace with proper target discovery -flags.DEFINE_string('target_host', None, 'iSCSI Target Host') -flags.DEFINE_string('target_port', '3260', 'iSCSI Target Port, 3260 Default') -flags.DEFINE_string('iqn_prefix', 'iqn.2010-10.org.openstack', 'IQN Prefix') +flags.DEFINE_string('target_host', + None, + 'iSCSI Target Host') +flags.DEFINE_string('target_port', + '3260', + 'iSCSI Target Port, 3260 Default') +flags.DEFINE_string('iqn_prefix', + 'iqn.2010-10.org.openstack', + 'IQN Prefix') class Configuration(object): @@ -292,9 +297,9 @@ class Volume(object): """ Gets iscsi name and portal from volume name and host. For this method to work the following are needed: - 1) volume_ref['host'] to resolve the public IP address - 2) ietd to listen only to the public network interface - If any of the two are missing, fall back on Flags + 1) volume_ref['host'] must resolve to something rather than loopback + 2) ietd must bind only to the address as resolved above + If any of the two conditions are not met, fall back on Flags. """ volume_ref = db.volume_get_by_ec2_id(context.get_admin_context(), volume_id) -- cgit From c2e328a158cadf45df9fb07f0c3da91f11ad416e Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 6 Dec 2010 19:46:42 +0000 Subject: fixed import module in __init__.py --- nova/virt/xenapi/__init__.py | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index ece430407..ed8c293a3 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -19,8 +19,5 @@ This is loaded late so that there's no need to install this library when not using XenAPI """ -XenAPI = None -global XenAPI - -if XenAPI is None: - XenAPI = __import__('XenAPI') +XenAPI = __import__('XenAPI') +global XenAPI \ No newline at end of file -- cgit From 09ebc4c33ff52c352cdab54fea41d1b116a446f4 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 7 Dec 2010 11:31:43 +0000 Subject: addressed review comments, complied with HACKING guidelines --- nova/virt/xenapi/__init__.py | 8 -- nova/virt/xenapi/novadeps.py | 170 ------------------------------------------- nova/virt/xenapi/vm_utils.py | 36 ++++++--- nova/virt/xenapi/vmops.py | 42 +++++------ nova/virt/xenapi_conn.py | 38 +++++++--- 5 files changed, 71 insertions(+), 223 deletions(-) delete mode 100644 nova/virt/xenapi/novadeps.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index ed8c293a3..3d598c463 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -13,11 +13,3 @@ # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. - -""" -This is loaded late so that there's no need to install this library -when not using XenAPI -""" - -XenAPI = __import__('XenAPI') -global XenAPI \ No newline at end of file diff --git a/nova/virt/xenapi/novadeps.py b/nova/virt/xenapi/novadeps.py deleted file mode 100644 index a68fd8e77..000000000 --- a/nova/virt/xenapi/novadeps.py +++ /dev/null @@ -1,170 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -It captures all the inner details of Nova classes and avoid their exposure -to the implementation of the XenAPI module. One benefit of this, is to avoid -sprawl of code changes -""" - -from nova import db -from nova import flags -from nova import context - -from nova.compute import power_state -from nova.auth.manager import AuthManager -from nova.compute import instance_types -from nova.virt import images - -XENAPI_POWER_STATE = { - 'Halted': power_state.SHUTDOWN, - 'Running': power_state.RUNNING, - 'Paused': power_state.PAUSED, - 'Suspended': power_state.SHUTDOWN, # FIXME - 'Crashed': power_state.CRASHED} - - -flags.DEFINE_string('xenapi_connection_url', - None, - 'URL for connection to XenServer/Xen Cloud Platform.' - ' Required if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_username', - 'root', - 'Username for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_string('xenapi_connection_password', - None, - 'Password for connection to XenServer/Xen Cloud Platform.' - ' Used only if connection_type=xenapi.') -flags.DEFINE_float('xenapi_task_poll_interval', - 0.5, - 'The interval used for polling of remote tasks ' - '(Async.VM.start, etc). Used only if ' - 'connection_type=xenapi.') - - -class Configuration(object): - """ Wraps Configuration details into common class """ - def __init__(self): - self._flags = flags.FLAGS - - @property - def xenapi_connection_url(self): - """ Return the connection url """ - return self._flags.xenapi_connection_url - - @property - def xenapi_connection_username(self): - """ Return the username used for the connection """ - return self._flags.xenapi_connection_username - - @property - def xenapi_connection_password(self): - """ Return the password used for the connection """ - return self._flags.xenapi_connection_password - - @property - def xenapi_task_poll_interval(self): - """ Return the poll interval for the connection """ - return self._flags.xenapi_task_poll_interval - - -class Instance(object): - """ Wraps up instance specifics """ - - @classmethod - def get_name(cls, instance): - """ The name of the instance """ - return instance.name - - @classmethod - def get_type(cls, instance): - """ The type of the instance """ - return instance_types.INSTANCE_TYPES[instance.instance_type] - - @classmethod - def get_project(cls, instance): - """ The project the instance belongs """ - return AuthManager().get_project(instance.project_id) - - @classmethod - def get_project_id(cls, instance): - """ The id of the project the instance belongs """ - return instance.project_id - - @classmethod - def get_image_id(cls, instance): - """ The instance's image id """ - return instance.image_id - - @classmethod - def get_kernel_id(cls, instance): - """ The instance's kernel id """ - return instance.kernel_id - - @classmethod - def get_ramdisk_id(cls, instance): - """ The instance's ramdisk id """ - return instance.ramdisk_id - - @classmethod - def get_network(cls, instance): - """ The network the instance is connected to """ - # TODO: is ge_admin_context the right context to retrieve? - return db.project_get_network(context.get_admin_context(), - instance.project_id) - - @classmethod - def get_mac(cls, instance): - """ The instance's MAC address """ - return instance.mac_address - - @classmethod - def get_user(cls, instance): - """ The owner of the instance """ - return AuthManager().get_user(instance.user_id) - - -class Network(object): - """ Wraps up network specifics """ - - @classmethod - def get_bridge(cls, network): - """ the bridge for the network """ - return network.bridge - - -class Image(object): - """ Wraps up image specifics """ - - @classmethod - def get_url(cls, image): - """ the url to get the image from """ - return images.image_url(image) - - -class User(object): - """ Wraps up user specifics """ - - @classmethod - def get_access(cls, user, project): - """ access key """ - return AuthManager().get_access_key(user, project) - - @classmethod - def get_secret(cls, user): - """ access secret """ - return user.secret diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 52ab2901d..407acda6e 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -25,10 +25,17 @@ import XenAPI from twisted.internet import defer from nova import utils +from nova.auth.manager import AuthManager +from nova.compute import instance_types +from nova.virt import images +from nova.compute import power_state -from novadeps import Instance -from novadeps import Image -from novadeps import User +XENAPI_POWER_STATE = { + 'Halted': power_state.SHUTDOWN, + 'Running': power_state.RUNNING, + 'Paused': power_state.PAUSED, + 'Suspended': power_state.SHUTDOWN, # FIXME + 'Crashed': power_state.CRASHED} class VMHelper(): @@ -44,7 +51,7 @@ class VMHelper(): """Create a VM record. Returns a Deferred that gives the new VM reference.""" - instance_type = Instance.get_type(instance) + instance_type = instance_types.INSTANCE_TYPES[instance.instance_type] mem = str(long(instance_type['memory_mb']) * 1024 * 1024) vcpus = str(instance_type['vcpus']) rec = { @@ -76,10 +83,9 @@ class VMHelper(): 'user_version': '0', 'other_config': {}, } - logging.debug('Created VM %s...', Instance.get_name(instance)) + logging.debug('Created VM %s...', instance.name) vm_ref = yield session.call_xenapi('VM.create', rec) - logging.debug('Created VM %s as %s.', - Instance.get_name(instance), vm_ref) + logging.debug('Created VM %s as %s.', instance.name, vm_ref) defer.returnValue(vm_ref) @classmethod @@ -137,14 +143,14 @@ class VMHelper(): its kernel and ramdisk (if external kernels are being used). Returns a Deferred that gives the new VDI UUID.""" - url = Image.get_url(image) - access = User.get_access(user, project) + url = images.image_url(image) + access = AuthManager().get_access_key(user, project) logging.debug("Asking xapi to fetch %s as %s", url, access) fn = use_sr and 'get_vdi' or 'get_kernel' args = {} args['src_url'] = url args['username'] = access - args['password'] = User.get_secret(user) + args['password'] = user.secret if use_sr: args['add_partition'] = 'true' task = yield session.async_call_plugin('objectstore', fn, args) @@ -179,7 +185,7 @@ class VMHelper(): def lookup_vm_vdis_blocking(cls, session, vm): """ Synchronous lookup_vm_vdis """ # Firstly we get the VBDs, then the VDIs. - # TODO: do we leave the read-only devices? + # TODO(Armando): do we leave the read-only devices? vbds = session.get_xenapi().VM.get_VBDs(vm) vdis = [] if vbds: @@ -197,3 +203,11 @@ class VMHelper(): return vdis else: return None + + @classmethod + def compile_info(cls, record): + return {'state': XENAPI_POWER_STATE[record['power_state']], + 'max_mem': long(record['memory_static_max']) >> 10, + 'mem': long(record['memory_dynamic_max']) >> 10, + 'num_cpu': record['VCPUs_max'], + 'cpu_time': 0} diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 3db86f179..3696782b3 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -23,12 +23,11 @@ import XenAPI from twisted.internet import defer -from novadeps import XENAPI_POWER_STATE -from novadeps import Instance -from novadeps import Network - -from vm_utils import VMHelper -from network_utils import NetworkHelper +from nova import db +from nova import context +from nova.auth.manager import AuthManager +from nova.virt.xenapi.network_utils import NetworkHelper +from nova.virt.xenapi.vm_utils import VMHelper class VMOps(object): @@ -46,39 +45,40 @@ class VMOps(object): @defer.inlineCallbacks def spawn(self, instance): """ Create VM instance """ - vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) + vm = yield VMHelper.lookup(self._session, instance.name) if vm is not None: raise Exception('Attempted to create non-unique name %s' % - Instance.get_name(instance)) + instance.name) - bridge = Network.get_bridge(Instance.get_network(instance)) + bridge = db.project_get_network(context.get_admin_context(), + instance.project_id).bridge network_ref = \ yield NetworkHelper.find_network_with_bridge(self._session, bridge) - user = Instance.get_user(instance) - project = Instance.get_project(instance) + user = AuthManager().get_user(instance.user_id) + project = AuthManager().get_project(instance.project_id) vdi_uuid = yield VMHelper.fetch_image(self._session, - Instance.get_image_id(instance), user, project, True) + instance.image_id, user, project, True) kernel = yield VMHelper.fetch_image(self._session, - Instance.get_kernel_id(instance), user, project, False) + instance.kernel_id, user, project, False) ramdisk = yield VMHelper.fetch_image(self._session, - Instance.get_ramdisk_id(instance), user, project, False) + instance.ramdisk_id, user, project, False) vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) vm_ref = yield VMHelper.create_vm(self._session, instance, kernel, ramdisk) yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) if network_ref: yield VMHelper.create_vif(self._session, vm_ref, - network_ref, Instance.get_mac(instance)) + network_ref, instance.mac_address) logging.debug('Starting VM %s...', vm_ref) yield self._session.call_xenapi('VM.start', vm_ref, False, False) - logging.info('Spawning VM %s created %s.', Instance.get_name(instance), + logging.info('Spawning VM %s created %s.', instance.name, vm_ref) @defer.inlineCallbacks def reboot(self, instance): """ Reboot VM instance """ - instance_name = Instance.get_name(instance) + instance_name = instance.name vm = yield VMHelper.lookup(self._session, instance_name) if vm is None: raise Exception('instance not present %s' % instance_name) @@ -88,7 +88,7 @@ class VMOps(object): @defer.inlineCallbacks def destroy(self, instance): """ Destroy VM instance """ - vm = yield VMHelper.lookup(self._session, Instance.get_name(instance)) + vm = yield VMHelper.lookup(self._session, instance.name) if vm is None: # Don't complain, just return. This lets us clean up instances # that have already disappeared from the underlying platform. @@ -122,11 +122,7 @@ class VMOps(object): if vm is None: raise Exception('instance not present %s' % instance_id) rec = self._session.get_xenapi().VM.get_record(vm) - return {'state': XENAPI_POWER_STATE[rec['power_state']], - 'max_mem': long(rec['memory_static_max']) >> 10, - 'mem': long(rec['memory_dynamic_max']) >> 10, - 'num_cpu': rec['VCPUs_max'], - 'cpu_time': 0} + return VMHelper.compile_info(rec) def get_console_output(self, instance): """ Return snapshot of console """ diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 2839a753c..a2eac4dc2 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -49,26 +49,42 @@ reactor thread if the VM.get_by_name_label or VM.get_record calls block. import logging import xmlrpclib +import XenAPI from twisted.internet import defer from twisted.internet import reactor from nova import utils - -from xenapi.vmops import VMOps -from xenapi.volumeops import VolumeOps -from xenapi.novadeps import Configuration -from xenapi import XenAPI - -Config = Configuration() +from nova import flags +from nova.virt.xenapi.vmops import VMOps +from nova.virt.xenapi.volumeops import VolumeOps + +FLAGS = flags.FLAGS +flags.DEFINE_string('xenapi_connection_url', + None, + 'URL for connection to XenServer/Xen Cloud Platform.' + ' Required if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_username', + 'root', + 'Username for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_string('xenapi_connection_password', + None, + 'Password for connection to XenServer/Xen Cloud Platform.' + ' Used only if connection_type=xenapi.') +flags.DEFINE_float('xenapi_task_poll_interval', + 0.5, + 'The interval used for polling of remote tasks ' + '(Async.VM.start, etc). Used only if ' + 'connection_type=xenapi.') def get_connection(_): """Note that XenAPI doesn't have a read-only connection mode, so the read_only parameter is ignored.""" - url = Config.xenapi_connection_url - username = Config.xenapi_connection_username - password = Config.xenapi_connection_password + url = FLAGS.xenapi_connection_url + username = FLAGS.xenapi_connection_username + password = FLAGS.xenapi_connection_password if not url or password is None: raise Exception('Must specify xenapi_connection_url, ' 'xenapi_connection_username (optionally), and ' @@ -165,7 +181,7 @@ class XenAPISession(object): #logging.debug('Polling task %s...', task) status = self._session.xenapi.task.get_status(task) if status == 'pending': - reactor.callLater(Config.xenapi_task_poll_interval, + reactor.callLater(FLAGS.xenapi_task_poll_interval, self._poll_task, task, deferred) elif status == 'success': result = self._session.xenapi.task.get_result(task) -- cgit From e9597d1370211de15ca96f1fa52fcbe3c9166a7e Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 7 Dec 2010 14:15:22 +0000 Subject: fixed pylint violations that slipped out from a previous check --- nova/virt/xenapi/vm_utils.py | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 762cbae83..2ee6737ab 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -29,6 +29,7 @@ from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.virt import images from nova.compute import power_state +from nova.virt.xenapi.volume_utils import StorageError XENAPI_POWER_STATE = { 'Halted': power_state.SHUTDOWN, @@ -115,11 +116,13 @@ class VMHelper(): @classmethod @utils.deferredToThread - def find_vbd_by_number(self, session, vm_ref, number): + def find_vbd_by_number(cls, session, vm_ref, number): + """ Get the VBD reference from the device number """ return VMHelper.find_vbd_by_number_blocking(session, vm_ref, number) @classmethod - def find_vbd_by_number_blocking(self, session, vm_ref, number): + def find_vbd_by_number_blocking(cls, session, vm_ref, number): + """ Synchronous find_vbd_by_number """ vbds = session.get_xenapi().VM.get_VBDs(vm_ref) if vbds: for vbd in vbds: @@ -127,29 +130,31 @@ class VMHelper(): vbd_rec = session.get_xenapi().VBD.get_record(vbd) if vbd_rec['userdevice'] == str(number): return vbd - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) raise Exception('VBD not found in instance %s' % vm_ref) @classmethod @defer.inlineCallbacks - def unplug_vbd(self, session, vbd_ref): + def unplug_vbd(cls, session, vbd_ref): + """ Unplug VBD from VM """ try: vbd_ref = yield session.call_xenapi('VBD.unplug', vbd_ref) - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) if exc.details[0] != 'DEVICE_ALREADY_DETACHED': - raise Exception('Unable to unplug VBD %s' % vbd_ref) + raise StorageError('Unable to unplug VBD %s' % vbd_ref) @classmethod @defer.inlineCallbacks - def destroy_vbd(self, session, vbd_ref): + def destroy_vbd(cls, session, vbd_ref): + """ Destroy VBD from host database """ try: task = yield session.call_xenapi('Async.VBD.destroy', vbd_ref) yield session.wait_for_task(task) - except Exception, exc: + except XenAPI.Failure, exc: logging.warn(exc) - raise Exception('Unable to destroy VBD %s' % vbd_ref) + raise StorageError('Unable to destroy VBD %s' % vbd_ref) @classmethod @defer.inlineCallbacks @@ -244,6 +249,7 @@ class VMHelper(): @classmethod def compile_info(cls, record): + """ Fill record with VM status information """ return {'state': XENAPI_POWER_STATE[record['power_state']], 'max_mem': long(record['memory_static_max']) >> 10, 'mem': long(record['memory_dynamic_max']) >> 10, -- cgit From 88777c09ad909c68da8d433800cae862e9bbff4a Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 7 Dec 2010 14:26:38 +0000 Subject: and yet another pylint fix --- nova/virt/xenapi/vm_utils.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 2ee6737ab..039e72981 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -132,7 +132,7 @@ class VMHelper(): return vbd except XenAPI.Failure, exc: logging.warn(exc) - raise Exception('VBD not found in instance %s' % vm_ref) + raise StorageError('VBD not found in instance %s' % vm_ref) @classmethod @defer.inlineCallbacks -- cgit From c0fc8a5e9e72ecb780258d9cf41b32973620eb4c Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 7 Dec 2010 15:35:56 +0000 Subject: small fixes on Exception handling --- nova/virt/xenapi/vm_utils.py | 2 +- nova/virt/xenapi/volume_utils.py | 10 +++++++--- nova/virt/xenapi/volumeops.py | 7 ++++--- 3 files changed, 12 insertions(+), 7 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 039e72981..f29803136 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -132,7 +132,7 @@ class VMHelper(): return vbd except XenAPI.Failure, exc: logging.warn(exc) - raise StorageError('VBD not found in instance %s' % vm_ref) + raise StorageError('VBD not found in instance %s' % vm_ref) @classmethod @defer.inlineCallbacks diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index 48aff7ef5..debaa6906 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -95,9 +95,13 @@ class VolumeHelper(): @defer.inlineCallbacks def find_sr_from_vbd(cls, session, vbd_ref): """ Find the SR reference from the VBD reference """ - vdi_ref = yield session.get_xenapi().VBD.get_VDI(vbd_ref) - sr_ref = yield session.get_xenapi().VDI.get_SR(vdi_ref) - defer.returnValue(sr_ref) + try: + vdi_ref = yield session.get_xenapi().VBD.get_VDI(vbd_ref) + sr_ref = yield session.get_xenapi().VDI.get_SR(vdi_ref) + defer.returnValue(sr_ref) + except XenAPI.Failure, exc: + logging.warn(exc) + raise StorageError('Unable to find SR from VBD %s' % vbd_ref) @classmethod @utils.deferredToThread diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index 4055688e3..b9f260756 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -18,6 +18,7 @@ Management class for Storage-related functions (attach, detach, etc). """ import logging +import XenAPI from twisted.internet import defer @@ -68,10 +69,10 @@ class VolumeOps(object): vm_ref, vdi_ref, vol_rec['deviceNumber'], False) - except StorageError, exc: + except XenAPI.Failure, exc: logging.warn(exc) yield VolumeHelper.destroy_iscsi_storage(self._session, sr_ref) - raise StorageError('Unable to use SR %s for instance %s' + raise Exception('Unable to use SR %s for instance %s' % (sr_ref, instance_name)) else: @@ -79,7 +80,7 @@ class VolumeOps(object): task = yield self._session.call_xenapi('Async.VBD.plug', vbd_ref) yield self._session.wait_for_task(task) - except StorageError, exc: + except XenAPI.Failure, exc: logging.warn(exc) yield VolumeHelper.destroy_iscsi_storage(self._session, sr_ref) -- cgit From d7ca22cce7df319efc57a2e8224016817c92bbdb Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 7 Dec 2010 18:57:44 +0000 Subject: importing XenAPI module loaded late --- nova/virt/xenapi/vm_utils.py | 9 ++++++--- nova/virt/xenapi/vmops.py | 6 +++++- nova/virt/xenapi_conn.py | 8 +++++++- 3 files changed, 18 insertions(+), 5 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 407acda6e..99d484ca2 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -20,15 +20,14 @@ their attributes like VDIs, VIFs, as well as their lookup functions. """ import logging -import XenAPI from twisted.internet import defer from nova import utils from nova.auth.manager import AuthManager from nova.compute import instance_types -from nova.virt import images from nova.compute import power_state +from nova.virt import images XENAPI_POWER_STATE = { 'Halted': power_state.SHUTDOWN, @@ -37,13 +36,17 @@ XENAPI_POWER_STATE = { 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} +XenAPI = None + class VMHelper(): """ The class that wraps the helper methods together. """ def __init__(self): - return + global XenAPI + if XenAPI is None: + XenAPI = __import__('XenAPI') @classmethod @defer.inlineCallbacks diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 3696782b3..d36cdaea5 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -19,7 +19,6 @@ Management class for VM-related functions (spawn, reboot, etc). """ import logging -import XenAPI from twisted.internet import defer @@ -29,12 +28,17 @@ from nova.auth.manager import AuthManager from nova.virt.xenapi.network_utils import NetworkHelper from nova.virt.xenapi.vm_utils import VMHelper +XenAPI = None + class VMOps(object): """ Management class for VM-related tasks """ def __init__(self, session): + global XenAPI + if XenAPI is None: + XenAPI = __import__('XenAPI') self._session = session def list_instances(self): diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index a2eac4dc2..26b30bf92 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -49,7 +49,6 @@ reactor thread if the VM.get_by_name_label or VM.get_record calls block. import logging import xmlrpclib -import XenAPI from twisted.internet import defer from twisted.internet import reactor @@ -78,10 +77,17 @@ flags.DEFINE_float('xenapi_task_poll_interval', '(Async.VM.start, etc). Used only if ' 'connection_type=xenapi.') +XenAPI = None + def get_connection(_): """Note that XenAPI doesn't have a read-only connection mode, so the read_only parameter is ignored.""" + # This is loaded late so that there's no need to install this + # library when not using XenAPI. + global XenAPI + if XenAPI is None: + XenAPI = __import__('XenAPI') url = FLAGS.xenapi_connection_url username = FLAGS.xenapi_connection_username password = FLAGS.xenapi_connection_password -- cgit From a107c6f69237cd7488b9ff716e370dd01b8dd8bd Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Tue, 7 Dec 2010 16:06:55 -0600 Subject: Initial diagnostics import -- needs testing and cleanup. --- nova/virt/xenapi/vm_utils.py | 15 +++++++++++++++ nova/virt/xenapi/vmops.py | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 48 insertions(+) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 99d484ca2..801867bd4 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -20,15 +20,20 @@ their attributes like VDIs, VIFs, as well as their lookup functions. """ import logging +import urllib from twisted.internet import defer +from nova import flags from nova import utils + from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.compute import power_state from nova.virt import images +FLAGS = flags.FLAGS + XENAPI_POWER_STATE = { 'Halted': power_state.SHUTDOWN, 'Running': power_state.RUNNING, @@ -214,3 +219,13 @@ class VMHelper(): 'mem': long(record['memory_dynamic_max']) >> 10, 'num_cpu': record['VCPUs_max'], 'cpu_time': 0} + + +def get_rrd(host, uuid): + """Return the VM RRD XML as a string""" + xml = urllib.urlopen("http://%s:%s@%s/vm_rrd?uuid=%s" % ( + FLAGS.xenapi_connection_username, + FLAGS.xenapi_connection_password, + host, + uuid)) + return xml.read() diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index d36cdaea5..ba73079ec 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -21,9 +21,11 @@ Management class for VM-related functions (spawn, reboot, etc). import logging from twisted.internet import defer +from xml.dom.minidom import parseString from nova import db from nova import context + from nova.auth.manager import AuthManager from nova.virt.xenapi.network_utils import NetworkHelper from nova.virt.xenapi.vm_utils import VMHelper @@ -128,6 +130,37 @@ class VMOps(object): rec = self._session.get_xenapi().VM.get_record(vm) return VMHelper.compile_info(rec) + def get_diagnostics(self, instance_id): + """Return data about the VM diagnostics""" + vm = VMHelper.lookup_blocking(self._session, instance_id) + if vm is None: + raise Exception("instance not present %s" % instance_id) + rec = self._session.get_xenapi().VM.get_record(vm) + try: + metrics = self._session.get_xenapi().VM_guest_metrics.get_record( + rec["guest_metrics"]) + diags = { + "Power State": rec["power_state"], + "Dom ID": rec["domid"], + "UUID": rec["uuid"], + "Kernel": metrics["os_version"]["uname"], + "Distro": metrics["os_version"]["name"]} + + xml = get_rrd(self._session.get_xenapi_host()["address"], + rec["uuid"]) + rrd = parseString(xml) + for i, node in enumerate(rrd.firstChild.childNodes): + # We don't want all of the extra garbage + if i >= 3 and i <= 11: + ref = node.childNodes + # Name and Value + diags[ref[0].firstChild.data] = ref[6].firstChild.data + + return {rec["name_label"]: diags} + except XenAPI.Failure as e: + return { + rec["name_label"]: "Unable to retrieve diagnostics: %s" % e} + def get_console_output(self, instance): """ Return snapshot of console """ # TODO: implement this to fix pylint! -- cgit From 699ac0785240307ef2396d688e6c0a2acb446665 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 7 Dec 2010 22:22:48 +0000 Subject: pylint fixes --- nova/virt/xenapi/vm_utils.py | 2 +- nova/virt/xenapi/volume_utils.py | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 35d89d835..0549dc9fb 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -44,7 +44,7 @@ class VMHelper(): """ The class that wraps the helper methods together. """ - def __init__(self, session): + def __init__(self): return @classmethod diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index 84eb82f15..051d0fe85 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -1,5 +1,4 @@ # vim: tabstop=4 shiftwidth=4 softtabstop=4 -from orca.scripts import self_voicing # Copyright (c) 2010 Citrix Systems, Inc. # @@ -46,7 +45,7 @@ class VolumeHelper(): """ The class that wraps the helper methods together. """ - def __init__(self, session): + def __init__(self): return @classmethod -- cgit From 63006a18701ff185e6837aa2b88f001052643460 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Wed, 8 Dec 2010 18:49:28 +0000 Subject: typo fix --- nova/virt/xenapi/volume_utils.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index 051d0fe85..d247066aa 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -78,14 +78,14 @@ class VolumeHelper(): if 'chapuser' in info and 'chappassword' in info: record = {'target': info['targetHost'], 'port': info['targetPort'], - 'targetIQN': info['targeIQN'], + 'targetIQN': info['targetIQN'], 'chapuser': info['chapuser'], 'chappassword': info['chappassword'] } else: record = {'target': info['targetHost'], 'port': info['targetPort'], - 'targetIQN': info['targeIQN'] + 'targetIQN': info['targetIQN'] } try: sr_ref = session.get_xenapi().SR.create( @@ -211,7 +211,7 @@ class VolumeHelper(): volume_info['volumeId'] = volume_id volume_info['targetHost'] = target_host volume_info['targetPort'] = target_port - volume_info['targeIQN'] = target_iqn + volume_info['targetIQN'] = target_iqn defer.returnValue(volume_info) @classmethod -- cgit From d4b6cfe98f0ce81c21a45f420ce30c5c693c1144 Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Wed, 8 Dec 2010 14:05:50 -0600 Subject: Got get_diagnostics in working order --- nova/virt/xenapi/vm_utils.py | 23 +++++++++++++++++++++++ nova/virt/xenapi/vmops.py | 28 ++-------------------------- nova/virt/xenapi_conn.py | 4 ++++ 3 files changed, 29 insertions(+), 26 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 801867bd4..c87a131a0 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -23,6 +23,7 @@ import logging import urllib from twisted.internet import defer +from xml.dom.minidom import parseString from nova import flags from nova import utils @@ -220,6 +221,28 @@ class VMHelper(): 'num_cpu': record['VCPUs_max'], 'cpu_time': 0} + @classmethod + def compile_diagnostics(cls, session, record): + try: + host = session.get_xenapi_host() + host_ip = session.get_xenapi().host.get_record(host)["address"] + metrics = session.get_xenapi().VM_guest_metrics.get_record( + record["guest_metrics"]) + diags = { + "Kernel": metrics["os_version"]["uname"], + "Distro": metrics["os_version"]["name"]} + xml = get_rrd(host_ip, record["uuid"]) + rrd = parseString(xml) + for i, node in enumerate(rrd.firstChild.childNodes): + # We don't want all of the extra garbage + if i >= 3 and i <= 11: + ref = node.childNodes + # Name and Value + diags[ref[0].firstChild.data] = ref[6].firstChild.data + return diags + except XenAPI.Failure as e: + return {"Unable to retrieve diagnostics": e} + def get_rrd(host, uuid): """Return the VM RRD XML as a string""" diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index ba73079ec..542d4894c 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -21,7 +21,6 @@ Management class for VM-related functions (spawn, reboot, etc). import logging from twisted.internet import defer -from xml.dom.minidom import parseString from nova import db from nova import context @@ -131,35 +130,12 @@ class VMOps(object): return VMHelper.compile_info(rec) def get_diagnostics(self, instance_id): - """Return data about the VM diagnostics""" + """Return data about VM diagnostics""" vm = VMHelper.lookup_blocking(self._session, instance_id) if vm is None: raise Exception("instance not present %s" % instance_id) rec = self._session.get_xenapi().VM.get_record(vm) - try: - metrics = self._session.get_xenapi().VM_guest_metrics.get_record( - rec["guest_metrics"]) - diags = { - "Power State": rec["power_state"], - "Dom ID": rec["domid"], - "UUID": rec["uuid"], - "Kernel": metrics["os_version"]["uname"], - "Distro": metrics["os_version"]["name"]} - - xml = get_rrd(self._session.get_xenapi_host()["address"], - rec["uuid"]) - rrd = parseString(xml) - for i, node in enumerate(rrd.firstChild.childNodes): - # We don't want all of the extra garbage - if i >= 3 and i <= 11: - ref = node.childNodes - # Name and Value - diags[ref[0].firstChild.data] = ref[6].firstChild.data - - return {rec["name_label"]: diags} - except XenAPI.Failure as e: - return { - rec["name_label"]: "Unable to retrieve diagnostics: %s" % e} + return VMHelper.compile_diagnostics(self._session, rec) def get_console_output(self, instance): """ Return snapshot of console """ diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 26b30bf92..ac5f5e342 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -126,6 +126,10 @@ class XenAPIConnection(object): """ Return data about VM instance """ return self._vmops.get_info(instance_id) + def get_diagnostics(self, instance_id): + """ Return data about VM diagnostics """ + return self._vmops.get_diagnostics(instance_id) + def get_console_output(self, instance): """ Return snapshot of console """ return self._vmops.get_console_output(instance) -- cgit From fd7931847de7cb24c629380fb71bca7833710edc Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Wed, 8 Dec 2010 14:16:49 -0600 Subject: Fixed docstrings --- nova/virt/xenapi/vm_utils.py | 1 + nova/virt/xenapi_conn.py | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index c87a131a0..2a75f9dbf 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -223,6 +223,7 @@ class VMHelper(): @classmethod def compile_diagnostics(cls, session, record): + """Compile VM diagnostics data""" try: host = session.get_xenapi_host() host_ip = session.get_xenapi().host.get_record(host)["address"] diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index ac5f5e342..2153810c8 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -127,7 +127,7 @@ class XenAPIConnection(object): return self._vmops.get_info(instance_id) def get_diagnostics(self, instance_id): - """ Return data about VM diagnostics """ + """Return data about VM diagnostics""" return self._vmops.get_diagnostics(instance_id) def get_console_output(self, instance): -- cgit From 3c85f1b7ed593a2d4d126a34241f217da5cf7ce6 Mon Sep 17 00:00:00 2001 From: Andy Smith Date: Wed, 8 Dec 2010 17:18:27 -0800 Subject: intermediate commit to checkpoint progress all relevant tests are passing except volume, next step is volume manager fixery --- nova/virt/images.py | 9 +++++---- nova/virt/libvirt_conn.py | 28 +++++++++++++--------------- nova/virt/xenapi/vm_utils.py | 28 +++++++++++----------------- nova/virt/xenapi_conn.py | 1 - 4 files changed, 29 insertions(+), 37 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/images.py b/nova/virt/images.py index 981aa5cf3..4d7c65f12 100644 --- a/nova/virt/images.py +++ b/nova/virt/images.py @@ -26,7 +26,7 @@ import time import urlparse from nova import flags -from nova import process +from nova import utils from nova.auth import manager from nova.auth import signer from nova.objectstore import image @@ -63,15 +63,16 @@ def _fetch_s3_image(image, path, user, project): cmd = ['/usr/bin/curl', '--fail', '--silent', url] for (k, v) in headers.iteritems(): - cmd += ['-H', '%s: %s' % (k, v)] + cmd += ['-H', '"%s: %s"' % (k, v)] cmd += ['-o', path] - return process.SharedPool().execute(executable=cmd[0], args=cmd[1:]) + cmd_out = ' '.join(cmd) + return utils.execute(cmd_out) def _fetch_local_image(image, path, user, project): source = _image_path('%s/image' % image) - return process.simple_execute('cp %s %s' % (source, path)) + return utils.execute('cp %s %s' % (source, path)) def _image_path(path): diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index c09a7c01d..715e7234c 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -54,7 +54,6 @@ from nova import context from nova import db from nova import exception from nova import flags -from nova import process from nova import utils #from nova.api import context from nova.auth import manager @@ -366,8 +365,8 @@ class LibvirtConnection(object): if virsh_output.startswith('/dev/'): logging.info('cool, it\'s a device') - r = process.simple_execute("sudo dd if=%s iflag=nonblock" % - virsh_output, check_exit_code=False) + r = utils.execute("sudo dd if=%s iflag=nonblock" % + virsh_output, check_exit_code=False) return r[0] else: return '' @@ -389,13 +388,13 @@ class LibvirtConnection(object): console_log = os.path.join(FLAGS.instances_path, instance['name'], 'console.log') - process.simple_execute('sudo chown %d %s' % (os.getuid(), - console_log)) + utils.execute('sudo chown %d %s' % (os.getuid(), + console_log)) if FLAGS.libvirt_type == 'xen': # Xen is special - virsh_output = process.simple_execute("virsh ttyconsole %s" % - instance['name']) + virsh_output = utils.execute("virsh ttyconsole %s" % + instance['name']) data = self._flush_xen_console(virsh_output) fpath = self._append_to_file(data, console_log) else: @@ -411,8 +410,8 @@ class LibvirtConnection(object): prefix + fname) # ensure directories exist and are writable - process.simple_execute('mkdir -p %s' % basepath(prefix='')) - process.simple_execute('chmod 0777 %s' % basepath(prefix='')) + utils.execute('mkdir -p %s' % basepath(prefix='')) + utils.execute('chmod 0777 %s' % basepath(prefix='')) # TODO(termie): these are blocking calls, it would be great # if they weren't. @@ -443,9 +442,9 @@ class LibvirtConnection(object): project) def execute(cmd, process_input=None, check_exit_code=True): - return process.simple_execute(cmd=cmd, - process_input=process_input, - check_exit_code=check_exit_code) + return utils.execute(cmd=cmd, + process_input=process_input, + check_exit_code=check_exit_code) key = str(inst['key_data']) net = None @@ -471,7 +470,7 @@ class LibvirtConnection(object): execute=execute) if os.path.exists(basepath('disk')): - process.simple_execute('rm -f %s' % basepath('disk')) + utils.execute('rm -f %s' % basepath('disk')) local_bytes = (instance_types.INSTANCE_TYPES[inst.instance_type] ['local_gb'] @@ -485,8 +484,7 @@ class LibvirtConnection(object): local_bytes, resize, execute=execute) if FLAGS.libvirt_type == 'uml': - process.simple_execute('sudo chown root %s' % - basepath('disk')) + utils.execute('sudo chown root %s' % basepath('disk')) def to_xml(self, instance, rescue=False): # TODO(termie): cache? diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 99d484ca2..b72b8e13d 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -21,14 +21,13 @@ their attributes like VDIs, VIFs, as well as their lookup functions. import logging -from twisted.internet import defer - from nova import utils from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.compute import power_state from nova.virt import images + XENAPI_POWER_STATE = { 'Halted': power_state.SHUTDOWN, 'Running': power_state.RUNNING, @@ -36,6 +35,7 @@ XENAPI_POWER_STATE = { 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} + XenAPI = None @@ -49,7 +49,6 @@ class VMHelper(): XenAPI = __import__('XenAPI') @classmethod - @defer.inlineCallbacks def create_vm(cls, session, instance, kernel, ramdisk): """Create a VM record. Returns a Deferred that gives the new VM reference.""" @@ -87,12 +86,11 @@ class VMHelper(): 'other_config': {}, } logging.debug('Created VM %s...', instance.name) - vm_ref = yield session.call_xenapi('VM.create', rec) + vm_ref = session.call_xenapi('VM.create', rec) logging.debug('Created VM %s as %s.', instance.name, vm_ref) - defer.returnValue(vm_ref) + return vm_ref @classmethod - @defer.inlineCallbacks def create_vbd(cls, session, vm_ref, vdi_ref, userdevice, bootable): """Create a VBD record. Returns a Deferred that gives the new VBD reference.""" @@ -111,13 +109,12 @@ class VMHelper(): vbd_rec['qos_algorithm_params'] = {} vbd_rec['qos_supported_algorithms'] = [] logging.debug('Creating VBD for VM %s, VDI %s ... ', vm_ref, vdi_ref) - vbd_ref = yield session.call_xenapi('VBD.create', vbd_rec) + vbd_ref = session.call_xenapi('VBD.create', vbd_rec) logging.debug('Created VBD %s for VM %s, VDI %s.', vbd_ref, vm_ref, vdi_ref) - defer.returnValue(vbd_ref) + return vbd_ref @classmethod - @defer.inlineCallbacks def create_vif(cls, session, vm_ref, network_ref, mac_address): """Create a VIF record. Returns a Deferred that gives the new VIF reference.""" @@ -133,13 +130,12 @@ class VMHelper(): vif_rec['qos_algorithm_params'] = {} logging.debug('Creating VIF for VM %s, network %s ... ', vm_ref, network_ref) - vif_ref = yield session.call_xenapi('VIF.create', vif_rec) + vif_ref = session.call_xenapi('VIF.create', vif_rec) logging.debug('Created VIF %s for VM %s, network %s.', vif_ref, vm_ref, network_ref) - defer.returnValue(vif_ref) + return vif_ref @classmethod - @defer.inlineCallbacks def fetch_image(cls, session, image, user, project, use_sr): """use_sr: True to put the image as a VDI in an SR, False to place it on dom0's filesystem. The former is for VM disks, the latter for @@ -156,12 +152,11 @@ class VMHelper(): args['password'] = user.secret if use_sr: args['add_partition'] = 'true' - task = yield session.async_call_plugin('objectstore', fn, args) - uuid = yield session.wait_for_task(task) - defer.returnValue(uuid) + task = session.async_call_plugin('objectstore', fn, args) + uuid = session.wait_for_task(task) + return uuid @classmethod - @utils.deferredToThread def lookup(cls, session, i): """ Look the instance i up, and returns it if available """ return VMHelper.lookup_blocking(session, i) @@ -179,7 +174,6 @@ class VMHelper(): return vms[0] @classmethod - @utils.deferredToThread def lookup_vm_vdis(cls, session, vm): """ Look for the VDIs that are attached to the VM """ return VMHelper.lookup_vm_vdis_blocking(session, vm) diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index dacf9fe2b..96d211cc0 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -167,7 +167,6 @@ class XenAPISession(object): self.get_xenapi_host(), plugin, fn, args) def wait_for_task(self, task): ->>>>>>> MERGE-SOURCE """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" -- cgit From 783f4fa44b835ef6c399e18679774a2e4bc4124a Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 9 Dec 2010 10:40:07 +0000 Subject: fixed how the XenAPI library is loaded --- nova/virt/xenapi/vm_utils.py | 9 +++++++++ nova/virt/xenapi/vmops.py | 2 ++ 2 files changed, 11 insertions(+) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 2a75f9dbf..2b84601f2 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -50,6 +50,15 @@ class VMHelper(): The class that wraps the helper methods together. """ def __init__(self): + return + + @classmethod + def late_import(cls): + """ + Load the XenAPI module in for helper class, if required. + This is to avoid to install the XenAPI library when other + hypervisors are used + """ global XenAPI if XenAPI is None: XenAPI = __import__('XenAPI') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 542d4894c..e7c3102a3 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -41,6 +41,8 @@ class VMOps(object): if XenAPI is None: XenAPI = __import__('XenAPI') self._session = session + # Load XenAPI module in the helper class + VMHelper.late_import() def list_instances(self): """ List VM instances """ -- cgit From 5f72a004dee0cb8de3f2daee1976fa978f6e51f3 Mon Sep 17 00:00:00 2001 From: Trey Morris Date: Thu, 9 Dec 2010 16:41:35 +0000 Subject: pause from compute.manager <-> xenapi --- nova/virt/xenapi/vmops.py | 20 ++++++++++++++++++++ nova/virt/xenapi_conn.py | 8 ++++++++ 2 files changed, 28 insertions(+) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index d36cdaea5..353e83873 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -120,6 +120,26 @@ class VMOps(object): except XenAPI.Failure, exc: logging.warn(exc) + @defer.inlineCallbacks + def pause(self, instance): + """ Pause VM instance """ + instance_name = instance.name + vm = yield VMHelper.lookup(self._session, instance_name) + if vm is None: + raise Exception('instance not present %s' % instance_name) + task = yield self._session.call_xenapi('Async.VM.pause', vm) + yield self._session.wait_for_task(task) + + @defer.inlineCallbacks + def unpause(self, instance): + """ Unpause VM instance """ + instance_name = instance.name + vm = yield VMHelper.lookup(self._session, instance_name) + if vm is None: + raise Exception('instance not present %s' % instance_name) + task = yield self._session.call_xenapi('Async.VM.unpause', vm) + yield self._session.wait_for_task(task) + def get_info(self, instance_id): """ Return data about VM instance """ vm = VMHelper.lookup_blocking(self._session, instance_id) diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 26b30bf92..df405e75f 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -122,6 +122,14 @@ class XenAPIConnection(object): """ Destroy VM instance """ self._vmops.destroy(instance) + def pause(self, instance): + """ Pause VM instance """ + self._vmops.pause(instance) + + def unpause(self, instance): + """ Unpause paused VM instance """ + self._vmops.unpause(instance) + def get_info(self, instance_id): """ Return data about VM instance """ return self._vmops.get_info(instance_id) -- cgit From 043d3ac3643e7183d4afe8c628ce90d62a468427 Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Thu, 9 Dec 2010 11:08:24 -0600 Subject: Make get_diagnostics async --- nova/virt/xenapi/vmops.py | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index e7c3102a3..9bfd07267 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -131,13 +131,14 @@ class VMOps(object): rec = self._session.get_xenapi().VM.get_record(vm) return VMHelper.compile_info(rec) + @defer.inlineCallbacks def get_diagnostics(self, instance_id): """Return data about VM diagnostics""" - vm = VMHelper.lookup_blocking(self._session, instance_id) + vm = yield VMHelper.lookup(self._session, instance_id) if vm is None: raise Exception("instance not present %s" % instance_id) - rec = self._session.get_xenapi().VM.get_record(vm) - return VMHelper.compile_diagnostics(self._session, rec) + rec = yield self._session.get_xenapi().VM.get_record(vm) + defer.returnValue(VMHelper.compile_diagnostics(self._session, rec)) def get_console_output(self, instance): """ Return snapshot of console """ -- cgit From 470dcfdf793f9a8b34c320731dcfc8d403a61bd2 Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Thu, 9 Dec 2010 11:32:23 -0600 Subject: Import module instead of function --- nova/virt/xenapi/vm_utils.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 2b84601f2..ff062fba0 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -23,7 +23,7 @@ import logging import urllib from twisted.internet import defer -from xml.dom.minidom import parseString +from xml.dom import minidom from nova import flags from nova import utils @@ -242,7 +242,7 @@ class VMHelper(): "Kernel": metrics["os_version"]["uname"], "Distro": metrics["os_version"]["name"]} xml = get_rrd(host_ip, record["uuid"]) - rrd = parseString(xml) + rrd = minidom.parseString(xml) for i, node in enumerate(rrd.firstChild.childNodes): # We don't want all of the extra garbage if i >= 3 and i <= 11: -- cgit From a00c8015e4ffe417f6c111a5eaf0578d9ef79b7d Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Thu, 9 Dec 2010 13:37:30 -0600 Subject: Added exception handling to get_rrd() --- nova/virt/xenapi/vm_utils.py | 30 +++++++++++++++++------------- 1 file changed, 17 insertions(+), 13 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index ff062fba0..77edb576e 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -242,13 +242,14 @@ class VMHelper(): "Kernel": metrics["os_version"]["uname"], "Distro": metrics["os_version"]["name"]} xml = get_rrd(host_ip, record["uuid"]) - rrd = minidom.parseString(xml) - for i, node in enumerate(rrd.firstChild.childNodes): - # We don't want all of the extra garbage - if i >= 3 and i <= 11: - ref = node.childNodes - # Name and Value - diags[ref[0].firstChild.data] = ref[6].firstChild.data + if xml: + rrd = minidom.parseString(xml) + for i, node in enumerate(rrd.firstChild.childNodes): + # We don't want all of the extra garbage + if i >= 3 and i <= 11: + ref = node.childNodes + # Name and Value + diags[ref[0].firstChild.data] = ref[6].firstChild.data return diags except XenAPI.Failure as e: return {"Unable to retrieve diagnostics": e} @@ -256,9 +257,12 @@ class VMHelper(): def get_rrd(host, uuid): """Return the VM RRD XML as a string""" - xml = urllib.urlopen("http://%s:%s@%s/vm_rrd?uuid=%s" % ( - FLAGS.xenapi_connection_username, - FLAGS.xenapi_connection_password, - host, - uuid)) - return xml.read() + try: + xml = urllib.urlopen("http://%s:%s@%s/vm_rrd?uuid=%s" % ( + FLAGS.xenapi_connection_username, + FLAGS.xenapi_connection_password, + host, + uuid)) + return xml.read() + except IOError: + return None -- cgit From af5c175dbc77048fb74311bf92569866676eee9c Mon Sep 17 00:00:00 2001 From: Andy Smith Date: Thu, 9 Dec 2010 16:18:52 -0800 Subject: removed a few more references to twisted --- nova/virt/images.py | 2 +- nova/virt/xenapi/network_utils.py | 9 ++---- nova/virt/xenapi/vmops.py | 61 ++++++++++++++++++--------------------- 3 files changed, 32 insertions(+), 40 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/images.py b/nova/virt/images.py index 4d7c65f12..1c9b2e093 100644 --- a/nova/virt/images.py +++ b/nova/virt/images.py @@ -50,7 +50,7 @@ def _fetch_s3_image(image, path, user, project): # This should probably move somewhere else, like e.g. a download_as # method on User objects and at the same time get rewritten to use - # twisted web client. + # a web client. headers = {} headers['Date'] = time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime()) diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index 8cb4cce3a..d8632f393 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -20,8 +20,6 @@ records and their attributes like bridges, PIFs, QoS, as well as their lookup functions. """ -from twisted.internet import defer - class NetworkHelper(): """ @@ -31,14 +29,13 @@ class NetworkHelper(): return @classmethod - @defer.inlineCallbacks def find_network_with_bridge(cls, session, bridge): """ Return the network on which the bridge is attached, if found """ expr = 'field "bridge" = "%s"' % bridge - networks = yield session.call_xenapi('network.get_all_records_where', - expr) + networks = session.call_xenapi('network.get_all_records_where', + expr) if len(networks) == 1: - defer.returnValue(networks.keys()[0]) + return networks.keys()[0] elif len(networks) > 1: raise Exception('Found non-unique network for bridge %s' % bridge) else: diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index d36cdaea5..0223e512a 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -20,8 +20,6 @@ Management class for VM-related functions (spawn, reboot, etc). import logging -from twisted.internet import defer - from nova import db from nova import context from nova.auth.manager import AuthManager @@ -46,10 +44,9 @@ class VMOps(object): return [self._session.get_xenapi().VM.get_name_label(vm) \ for vm in self._session.get_xenapi().VM.get_all()] - @defer.inlineCallbacks def spawn(self, instance): """ Create VM instance """ - vm = yield VMHelper.lookup(self._session, instance.name) + vm = VMHelper.lookup(self._session, instance.name) if vm is not None: raise Exception('Attempted to create non-unique name %s' % instance.name) @@ -57,66 +54,64 @@ class VMOps(object): bridge = db.project_get_network(context.get_admin_context(), instance.project_id).bridge network_ref = \ - yield NetworkHelper.find_network_with_bridge(self._session, bridge) + NetworkHelper.find_network_with_bridge(self._session, bridge) user = AuthManager().get_user(instance.user_id) project = AuthManager().get_project(instance.project_id) - vdi_uuid = yield VMHelper.fetch_image(self._session, - instance.image_id, user, project, True) - kernel = yield VMHelper.fetch_image(self._session, - instance.kernel_id, user, project, False) - ramdisk = yield VMHelper.fetch_image(self._session, - instance.ramdisk_id, user, project, False) - vdi_ref = yield self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) - vm_ref = yield VMHelper.create_vm(self._session, - instance, kernel, ramdisk) - yield VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) + vdi_uuid = VMHelper.fetch_image( + self._session, instance.image_id, user, project, True) + kernel = VMHelper.fetch_image( + self._session, instance.kernel_id, user, project, False) + ramdisk = VMHelper.fetch_image( + self._session, instance.ramdisk_id, user, project, False) + vdi_ref = self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid) + vm_ref = VMHelper.create_vm( + self._session, instance, kernel, ramdisk) + VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True) if network_ref: - yield VMHelper.create_vif(self._session, vm_ref, - network_ref, instance.mac_address) + VMHelper.create_vif(self._session, vm_ref, + network_ref, instance.mac_address) logging.debug('Starting VM %s...', vm_ref) - yield self._session.call_xenapi('VM.start', vm_ref, False, False) + self._session.call_xenapi('VM.start', vm_ref, False, False) logging.info('Spawning VM %s created %s.', instance.name, vm_ref) - @defer.inlineCallbacks def reboot(self, instance): """ Reboot VM instance """ instance_name = instance.name - vm = yield VMHelper.lookup(self._session, instance_name) + vm = VMHelper.lookup(self._session, instance_name) if vm is None: raise Exception('instance not present %s' % instance_name) - task = yield self._session.call_xenapi('Async.VM.clean_reboot', vm) - yield self._session.wait_for_task(task) + task = self._session.call_xenapi('Async.VM.clean_reboot', vm) + self._session.wait_for_task(task) - @defer.inlineCallbacks def destroy(self, instance): """ Destroy VM instance """ - vm = yield VMHelper.lookup(self._session, instance.name) + vm = VMHelper.lookup(self._session, instance.name) if vm is None: # Don't complain, just return. This lets us clean up instances # that have already disappeared from the underlying platform. - defer.returnValue(None) + return # Get the VDIs related to the VM - vdis = yield VMHelper.lookup_vm_vdis(self._session, vm) + vdis = VMHelper.lookup_vm_vdis(self._session, vm) try: - task = yield self._session.call_xenapi('Async.VM.hard_shutdown', + task = self._session.call_xenapi('Async.VM.hard_shutdown', vm) - yield self._session.wait_for_task(task) + self._session.wait_for_task(task) except XenAPI.Failure, exc: logging.warn(exc) # Disk clean-up if vdis: for vdi in vdis: try: - task = yield self._session.call_xenapi('Async.VDI.destroy', - vdi) - yield self._session.wait_for_task(task) + task = self._session.call_xenapi('Async.VDI.destroy', + vdi) + self._session.wait_for_task(task) except XenAPI.Failure, exc: logging.warn(exc) try: - task = yield self._session.call_xenapi('Async.VM.destroy', vm) - yield self._session.wait_for_task(task) + task = self._session.call_xenapi('Async.VM.destroy', vm) + self._session.wait_for_task(task) except XenAPI.Failure, exc: logging.warn(exc) -- cgit From f7862f6d212d52e09d2a3a076762c936618cf061 Mon Sep 17 00:00:00 2001 From: Trey Morris Date: Fri, 10 Dec 2010 17:55:21 +0000 Subject: added pause and unpause to fake connection --- nova/virt/fake.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'nova/virt') diff --git a/nova/virt/fake.py b/nova/virt/fake.py index f855523d3..4526f0042 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -133,6 +133,18 @@ class FakeConnection(object): """ return defer.succeed(None) + def pause(self, instance): + """ + Pause the specified instance. + """ + return defer.succeed(None) + + def unpause(self, instance): + """ + Unpause the specified instance. + """ + return defer.succeed(None) + def destroy(self, instance): """ Destroy (shutdown and delete) the specified instance. -- cgit From 2a5ad56319dfdf75bf2eab1337032f035822f272 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Fri, 10 Dec 2010 18:37:17 +0000 Subject: There is always the odd change that one forgets! --- nova/virt/xenapi_conn.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index b82862764..4ace6da14 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -65,7 +65,7 @@ from nova.virt.xenapi.volumeops import VolumeOps FLAGS = flags.FLAGS flags.DEFINE_boolean('xenapi_use_fake_session', - True, + False, 'Set to true in order to use the fake XenAPI SDK') flags.DEFINE_string('xenapi_connection_url', None, -- cgit From c835c441981a17764931390bc1ace6121ab100a4 Mon Sep 17 00:00:00 2001 From: Andy Smith Date: Fri, 10 Dec 2010 11:53:17 -0800 Subject: port new patches --- nova/virt/xenapi/vmops.py | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 13871b479..b6b92b926 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -126,14 +126,13 @@ class VMOps(object): rec = self._session.get_xenapi().VM.get_record(vm) return VMHelper.compile_info(rec) - @defer.inlineCallbacks def get_diagnostics(self, instance_id): """Return data about VM diagnostics""" - vm = yield VMHelper.lookup(self._session, instance_id) + vm = VMHelper.lookup(self._session, instance_id) if vm is None: raise Exception("instance not present %s" % instance_id) - rec = yield self._session.get_xenapi().VM.get_record(vm) - defer.returnValue(VMHelper.compile_diagnostics(self._session, rec)) + rec = self._session.get_xenapi().VM.get_record(vm) + return VMHelper.compile_diagnostics(self._session, rec) def get_console_output(self, instance): """ Return snapshot of console """ -- cgit From c00d99102c826f6a501ff7a530291dc8d7680df7 Mon Sep 17 00:00:00 2001 From: "jaypipes@gmail.com" <> Date: Sat, 11 Dec 2010 15:42:05 -0500 Subject: Final round of marking translation strings --- nova/virt/connection.py | 2 +- nova/virt/fake.py | 3 ++- nova/virt/libvirt_conn.py | 41 ++++++++++++++++++++++------------------- nova/virt/xenapi_conn.py | 16 ++++++++-------- 4 files changed, 33 insertions(+), 29 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/connection.py b/nova/virt/connection.py index c40bb4bb4..61e99944e 100644 --- a/nova/virt/connection.py +++ b/nova/virt/connection.py @@ -66,6 +66,6 @@ def get_connection(read_only=False): raise Exception('Unknown connection type "%s"' % t) if conn is None: - logging.error('Failed to open connection to the hypervisor') + logging.error(_('Failed to open connection to the hypervisor')) sys.exit(1) return conn diff --git a/nova/virt/fake.py b/nova/virt/fake.py index f855523d3..26b01af91 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -167,7 +167,8 @@ class FakeConnection(object): knowledge of the instance """ if instance_name not in self.instances: - raise exception.NotFound("Instance %s Not Found" % instance_name) + raise exception.NotFound(_("Instance %s Not Found") + % instance_name) i = self.instances[instance_name] return {'state': i._state, 'max_mem': 0, diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 18085089f..bc435f4b5 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -132,7 +132,7 @@ class LibvirtConnection(object): @property def _conn(self): if not self._wrapped_conn or not self._test_connection(): - logging.debug('Connecting to libvirt: %s' % self.libvirt_uri) + logging.debug(_('Connecting to libvirt: %s') % self.libvirt_uri) self._wrapped_conn = self._connect(self.libvirt_uri, self.read_only) return self._wrapped_conn @@ -144,7 +144,7 @@ class LibvirtConnection(object): except libvirt.libvirtError as e: if e.get_error_code() == libvirt.VIR_ERR_SYSTEM_ERROR and \ e.get_error_domain() == libvirt.VIR_FROM_REMOTE: - logging.debug('Connection to libvirt broke') + logging.debug(_('Connection to libvirt broke')) return False raise @@ -214,7 +214,7 @@ class LibvirtConnection(object): def _cleanup(self, instance): target = os.path.join(FLAGS.instances_path, instance['name']) - logging.info('instance %s: deleting instance files %s', + logging.info(_('instance %s: deleting instance files %s'), instance['name'], target) if os.path.exists(target): shutil.rmtree(target) @@ -259,7 +259,7 @@ class LibvirtConnection(object): mount_device = mountpoint.rpartition("/")[2] xml = self._get_disk_xml(virt_dom.XMLDesc(0), mount_device) if not xml: - raise exception.NotFound("No disk at %s" % mount_device) + raise exception.NotFound(_("No disk at %s") % mount_device) virt_dom.detachDevice(xml) yield @@ -279,11 +279,11 @@ class LibvirtConnection(object): db.instance_set_state(context.get_admin_context(), instance['id'], state) if state == power_state.RUNNING: - logging.debug('instance %s: rebooted', instance['name']) + logging.debug(_('instance %s: rebooted'), instance['name']) timer.stop() d.callback(None) except Exception, exn: - logging.error('_wait_for_reboot failed: %s', exn) + logging.error(_('_wait_for_reboot failed: %s'), exn) db.instance_set_state(context.get_admin_context(), instance['id'], power_state.SHUTDOWN) @@ -314,11 +314,11 @@ class LibvirtConnection(object): state = self.get_info(instance['name'])['state'] db.instance_set_state(None, instance['id'], state) if state == power_state.RUNNING: - logging.debug('instance %s: rescued', instance['name']) + logging.debug(_('instance %s: rescued'), instance['name']) timer.stop() d.callback(None) except Exception, exn: - logging.error('_wait_for_rescue failed: %s', exn) + logging.error(_('_wait_for_rescue failed: %s'), exn) db.instance_set_state(None, instance['id'], power_state.SHUTDOWN) @@ -348,7 +348,7 @@ class LibvirtConnection(object): setup_nwfilters_for_instance(instance) yield self._create_image(instance, xml) yield self._conn.createXML(xml, 0) - logging.debug("instance %s: is running", instance['name']) + logging.debug(_("instance %s: is running"), instance['name']) local_d = defer.Deferred() timer = task.LoopingCall(f=None) @@ -359,11 +359,11 @@ class LibvirtConnection(object): db.instance_set_state(context.get_admin_context(), instance['id'], state) if state == power_state.RUNNING: - logging.debug('instance %s: booted', instance['name']) + logging.debug(_('instance %s: booted'), instance['name']) timer.stop() local_d.callback(None) except: - logging.exception('instance %s: failed to boot', + logging.exception(_('instance %s: failed to boot'), instance['name']) db.instance_set_state(context.get_admin_context(), instance['id'], @@ -379,7 +379,7 @@ class LibvirtConnection(object): virsh_output = virsh_output[0].strip() if virsh_output.startswith('/dev/'): - logging.info('cool, it\'s a device') + logging.info(_('cool, it\'s a device')) d = process.simple_execute("sudo dd if=%s iflag=nonblock" % virsh_output, check_exit_code=False) d.addCallback(lambda r: r[0]) @@ -388,7 +388,7 @@ class LibvirtConnection(object): return '' def _append_to_file(self, data, fpath): - logging.info('data: %r, fpath: %r' % (data, fpath)) + logging.info(_('data: %r, fpath: %r') % (data, fpath)) fp = open(fpath, 'a+') fp.write(data) return fpath @@ -431,7 +431,7 @@ class LibvirtConnection(object): # TODO(termie): these are blocking calls, it would be great # if they weren't. - logging.info('instance %s: Creating image', inst['name']) + logging.info(_('instance %s: Creating image'), inst['name']) f = open(basepath('libvirt.xml'), 'w') f.write(libvirt_xml) f.close() @@ -477,10 +477,10 @@ class LibvirtConnection(object): 'dns': network_ref['dns']} if key or net: if key: - logging.info('instance %s: injecting key into image %s', + logging.info(_('instance %s: injecting key into image %s'), inst['name'], inst.image_id) if net: - logging.info('instance %s: injecting net into image %s', + logging.info(_('instance %s: injecting net into image %s'), inst['name'], inst.image_id) yield disk.inject_data(basepath('disk-raw'), key, net, execute=execute) @@ -504,7 +504,8 @@ class LibvirtConnection(object): def to_xml(self, instance, rescue=False): # TODO(termie): cache? - logging.debug('instance %s: starting toXML method', instance['name']) + logging.debug(_('instance %s: starting toXML method'), + instance['name']) network = db.project_get_network(context.get_admin_context(), instance['project_id']) # FIXME(vish): stick this in db @@ -528,7 +529,8 @@ class LibvirtConnection(object): libvirt_xml = self.rescue_xml % xml_info else: libvirt_xml = self.libvirt_xml % xml_info - logging.debug('instance %s: finished toXML method', instance['name']) + logging.debug(_('instance %s: finished toXML method'), + instance['name']) return libvirt_xml @@ -536,7 +538,8 @@ class LibvirtConnection(object): try: virt_dom = self._conn.lookupByName(instance_name) except: - raise exception.NotFound("Instance %s not found" % instance_name) + raise exception.NotFound(_("Instance %s not found") + % instance_name) (state, max_mem, mem, num_cpu, cpu_time) = virt_dom.info() return {'state': state, 'max_mem': max_mem, diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 2153810c8..c8c451dfe 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -92,10 +92,10 @@ def get_connection(_): username = FLAGS.xenapi_connection_username password = FLAGS.xenapi_connection_password if not url or password is None: - raise Exception('Must specify xenapi_connection_url, ' - 'xenapi_connection_username (optionally), and ' - 'xenapi_connection_password to use ' - 'connection_type=xenapi') + raise Exception(_('Must specify xenapi_connection_url, ' + 'xenapi_connection_username (optionally), and ' + 'xenapi_connection_password to use ' + 'connection_type=xenapi')) return XenAPIConnection(url, username, password) @@ -195,11 +195,11 @@ class XenAPISession(object): self._poll_task, task, deferred) elif status == 'success': result = self._session.xenapi.task.get_result(task) - logging.info('Task %s status: success. %s', task, result) + logging.info(_('Task %s status: success. %s'), task, result) deferred.callback(_parse_xmlrpc_value(result)) else: error_info = self._session.xenapi.task.get_error_info(task) - logging.warn('Task %s status: %s. %s', task, status, + logging.warn(_('Task %s status: %s. %s'), task, status, error_info) deferred.errback(XenAPI.Failure(error_info)) #logging.debug('Polling task %s done.', task) @@ -213,7 +213,7 @@ def _unwrap_plugin_exceptions(func, *args, **kwargs): try: return func(*args, **kwargs) except XenAPI.Failure, exc: - logging.debug("Got exception: %s", exc) + logging.debug(_("Got exception: %s"), exc) if (len(exc.details) == 4 and exc.details[0] == 'XENAPI_PLUGIN_EXCEPTION' and exc.details[2] == 'Failure'): @@ -226,7 +226,7 @@ def _unwrap_plugin_exceptions(func, *args, **kwargs): else: raise except xmlrpclib.ProtocolError, exc: - logging.debug("Got exception: %s", exc) + logging.debug(_("Got exception: %s"), exc) raise -- cgit From 669d5f5612840c9ed6449d91ee5aae97842cac72 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 13 Dec 2010 18:22:56 +0000 Subject: second round for unit testing framework --- nova/virt/xenapi/__init__.py | 5 +++ nova/virt/xenapi/fake.py | 75 ++++++++++++++++++++++++++++++++++++++++++-- nova/virt/xenapi/vmops.py | 3 +- nova/virt/xenapi_conn.py | 2 +- 4 files changed, 80 insertions(+), 5 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index 3d598c463..d9abe54c5 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -13,3 +13,8 @@ # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. + +""" +:mod:`xenapi` -- Nova support for XenServer and XCP through XenAPI +================================================================== +""" diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py index 75ff587e1..3a01f9c3d 100644 --- a/nova/virt/xenapi/fake.py +++ b/nova/virt/xenapi/fake.py @@ -1,4 +1,6 @@ # vim: tabstop=4 shiftwidth=4 softtabstop=4 +from twisted.web.domhelpers import _get +from aptdaemon.defer import defer # Copyright (c) 2010 Citrix Systems, Inc. # @@ -33,15 +35,15 @@ class Failure(Exception): class FakeXenAPISession(object): """ The session to invoke XenAPI SDK calls """ def __init__(self): - pass + self.fail_next_call = False def get_xenapi(self): """ Return the xenapi object """ - raise NotImplementedError() + return self def get_xenapi_host(self): """ Return the xenapi host """ - raise NotImplementedError() + return 'FAKE_XENAPI_HOST' def call_xenapi(self, method, *args): """Call the specified XenAPI method on a background thread. Returns @@ -57,3 +59,70 @@ class FakeXenAPISession(object): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" raise NotImplementedError() + + def __getattr__(self, name): + return FakeXenAPIObject(name, self) + + +class FakeXenAPIObject(object): + def __init__(self, name, session): + self.name = name + self.session = session + self.FAKE_REF = 'FAKE_REFERENCE_%s' % name + + def get_by_name_label(self, label): + if label is None: + return '' # 'No object found' + else: + return 'FAKE_OBJECT_%s_%s' % (self.name, label) + + def getter(self, *args): + self._check_fail() + return self.FAKE_REF + + def ref_list(self, *args): + self._check_fail() + return [FakeXenAPIRecord()] + + def __getattr__(self, name): + if name == 'create': + return self._create + elif name == 'get_record': + return self._record + elif name == 'introduce': + return self._introduce + elif name.startswith('get_'): + getter = 'get_%s' % self.name + if name == getter: + return self.getter + else: + child = name[name.find('_') + 1:] + if child.endswith('s'): + return FakeXenAPIObject(child[:-1], self.session).ref_list + else: + return FakeXenAPIObject(child, self.session).getter + + def _create(self, *args): + self._check_fail() + return self.FAKE_REF + + def _record(self, *args): + self._check_fail() + return FakeXenAPIRecord() + + def _introduce(self, *args): + self._check_fail() + pass + + def _check_fail(self): + if self.session.fail_next_call: + self.session.fail_next_call = False # Reset! + raise Failure('Unable to create %s' % self.name) + + +class FakeXenAPIRecord(dict): + def __init__(self): + pass + + def __getitem__(self, attr): + return '' diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index a5d923a3b..9a8db0ad4 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -24,6 +24,7 @@ from twisted.internet import defer from nova import db from nova import context +from nova import exception from nova.auth.manager import AuthManager from nova.virt.xenapi.network_utils import NetworkHelper @@ -123,7 +124,7 @@ class VMOps(object): """ Return data about VM instance """ vm = VMHelper.lookup_blocking(self._session, instance_id) if vm is None: - raise Exception('instance not present %s' % instance_id) + raise exception.NotFound('Instance not found %s' % instance_id) rec = self._session.get_xenapi().VM.get_record(vm) return VMHelper.compile_info(rec) diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 4ace6da14..d8d21e24d 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -91,7 +91,7 @@ flags.DEFINE_string('target_port', '3260', 'iSCSI Target Port, 3260 Default') flags.DEFINE_string('iqn_prefix', - 'iqn.2010-10.org.openstack', + 'iqn.2010-12.org.openstack', 'IQN Prefix') -- cgit From fe667352c3e25c744a989ca45f4f9ed472778ae3 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 13 Dec 2010 18:43:24 +0000 Subject: removing imports that should have not been there --- nova/virt/xenapi/fake.py | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py index 3a01f9c3d..2fed28609 100644 --- a/nova/virt/xenapi/fake.py +++ b/nova/virt/xenapi/fake.py @@ -1,6 +1,4 @@ # vim: tabstop=4 shiftwidth=4 softtabstop=4 -from twisted.web.domhelpers import _get -from aptdaemon.defer import defer # Copyright (c) 2010 Citrix Systems, Inc. # @@ -89,8 +87,10 @@ class FakeXenAPIObject(object): return self._create elif name == 'get_record': return self._record - elif name == 'introduce': - return self._introduce + elif name == 'introduce' or\ + name == 'forget' or\ + name == 'unplug': + return self._fake_action elif name.startswith('get_'): getter = 'get_%s' % self.name if name == getter: @@ -110,7 +110,7 @@ class FakeXenAPIObject(object): self._check_fail() return FakeXenAPIRecord() - def _introduce(self, *args): + def _fake_action(self, *args): self._check_fail() pass -- cgit From e30801445f8b543d78494ca63be60f85b94d3a53 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Mon, 13 Dec 2010 20:31:33 +0000 Subject: moving xenapi unittests changes into another branch --- nova/virt/xenapi/fake.py | 128 ----------------------------------------------- 1 file changed, 128 deletions(-) delete mode 100644 nova/virt/xenapi/fake.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py deleted file mode 100644 index 2fed28609..000000000 --- a/nova/virt/xenapi/fake.py +++ /dev/null @@ -1,128 +0,0 @@ -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2010 Citrix Systems, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); you may -# not use this file except in compliance with the License. You may obtain -# a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -# License for the specific language governing permissions and limitations -# under the License. - -""" -A fake XenAPI SDK. - -Allows for xenapi helper classes testing. -""" - - -class Failure(Exception): - def __init__(self, message=None): - super(Failure, self).__init__(message) - self.details = [] - - def __str__(self): - return 'Fake XenAPI Exception' - - -class FakeXenAPISession(object): - """ The session to invoke XenAPI SDK calls """ - def __init__(self): - self.fail_next_call = False - - def get_xenapi(self): - """ Return the xenapi object """ - return self - - def get_xenapi_host(self): - """ Return the xenapi host """ - return 'FAKE_XENAPI_HOST' - - def call_xenapi(self, method, *args): - """Call the specified XenAPI method on a background thread. Returns - a Deferred for the result.""" - raise NotImplementedError() - - def async_call_plugin(self, plugin, fn, args): - """Call Async.host.call_plugin on a background thread. Returns a - Deferred with the task reference.""" - raise NotImplementedError() - - def wait_for_task(self, task): - """Return a Deferred that will give the result of the given task. - The task is polled until it completes.""" - raise NotImplementedError() - - def __getattr__(self, name): - return FakeXenAPIObject(name, self) - - -class FakeXenAPIObject(object): - def __init__(self, name, session): - self.name = name - self.session = session - self.FAKE_REF = 'FAKE_REFERENCE_%s' % name - - def get_by_name_label(self, label): - if label is None: - return '' # 'No object found' - else: - return 'FAKE_OBJECT_%s_%s' % (self.name, label) - - def getter(self, *args): - self._check_fail() - return self.FAKE_REF - - def ref_list(self, *args): - self._check_fail() - return [FakeXenAPIRecord()] - - def __getattr__(self, name): - if name == 'create': - return self._create - elif name == 'get_record': - return self._record - elif name == 'introduce' or\ - name == 'forget' or\ - name == 'unplug': - return self._fake_action - elif name.startswith('get_'): - getter = 'get_%s' % self.name - if name == getter: - return self.getter - else: - child = name[name.find('_') + 1:] - if child.endswith('s'): - return FakeXenAPIObject(child[:-1], self.session).ref_list - else: - return FakeXenAPIObject(child, self.session).getter - - def _create(self, *args): - self._check_fail() - return self.FAKE_REF - - def _record(self, *args): - self._check_fail() - return FakeXenAPIRecord() - - def _fake_action(self, *args): - self._check_fail() - pass - - def _check_fail(self): - if self.session.fail_next_call: - self.session.fail_next_call = False # Reset! - raise Failure('Unable to create %s' % self.name) - - -class FakeXenAPIRecord(dict): - def __init__(self): - pass - - def __getitem__(self, attr): - return '' -- cgit From 1395d31badc43bdce036e8da3927af22a22ca91e Mon Sep 17 00:00:00 2001 From: Sandy Walsh Date: Mon, 13 Dec 2010 18:25:17 -0800 Subject: Fixed power state update with Twisted callback --- nova/virt/xenapi/vmops.py | 12 ++++++++---- nova/virt/xenapi_conn.py | 8 ++++---- 2 files changed, 12 insertions(+), 8 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 353e83873..03ee3dd58 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -121,24 +121,28 @@ class VMOps(object): logging.warn(exc) @defer.inlineCallbacks - def pause(self, instance): + def pause(self, instance, callback): """ Pause VM instance """ instance_name = instance.name vm = yield VMHelper.lookup(self._session, instance_name) if vm is None: raise Exception('instance not present %s' % instance_name) task = yield self._session.call_xenapi('Async.VM.pause', vm) - yield self._session.wait_for_task(task) + deferred = self._session.wait_for_task(task) + deferred.addCallback(callback) + yield deferred @defer.inlineCallbacks - def unpause(self, instance): + def unpause(self, instance, callback): """ Unpause VM instance """ instance_name = instance.name vm = yield VMHelper.lookup(self._session, instance_name) if vm is None: raise Exception('instance not present %s' % instance_name) task = yield self._session.call_xenapi('Async.VM.unpause', vm) - yield self._session.wait_for_task(task) + deferred = self._session.wait_for_task(task) + deferred.addCallback(callback) + yield deferred def get_info(self, instance_id): """ Return data about VM instance """ diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index df405e75f..bcfb48323 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -122,13 +122,13 @@ class XenAPIConnection(object): """ Destroy VM instance """ self._vmops.destroy(instance) - def pause(self, instance): + def pause(self, instance, callback): """ Pause VM instance """ - self._vmops.pause(instance) + self._vmops.pause(instance, callback) - def unpause(self, instance): + def unpause(self, instance, callback): """ Unpause paused VM instance """ - self._vmops.unpause(instance) + self._vmops.unpause(instance, callback) def get_info(self, instance_id): """ Return data about VM instance """ -- cgit From 99ba9bc7c4cd7bdb085e76a8f926ade27d558a84 Mon Sep 17 00:00:00 2001 From: Sandy Walsh Date: Tue, 14 Dec 2010 02:43:15 -0400 Subject: added callback param to fake_conn --- nova/virt/fake.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/fake.py b/nova/virt/fake.py index 4526f0042..c56907175 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -133,13 +133,13 @@ class FakeConnection(object): """ return defer.succeed(None) - def pause(self, instance): + def pause(self, instance, callback): """ Pause the specified instance. """ return defer.succeed(None) - def unpause(self, instance): + def unpause(self, instance, callback): """ Unpause the specified instance. """ -- cgit From 6e37cf42d758b5040442d9c296b21955d10a7327 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Tue, 14 Dec 2010 11:48:29 +0000 Subject: final cleanup, after moving unittest work into another branch --- nova/virt/xenapi/__init__.py | 30 ++++++++++++++++++ nova/virt/xenapi/fake.py | 66 +++++++++++++++++++++++++++++++++++++++ nova/virt/xenapi/network_utils.py | 3 +- nova/virt/xenapi/vm_utils.py | 19 ++--------- nova/virt/xenapi/vmops.py | 6 ++-- nova/virt/xenapi/volume_utils.py | 20 ++---------- nova/virt/xenapi/volumeops.py | 8 +++-- nova/virt/xenapi_conn.py | 10 ++++-- 8 files changed, 118 insertions(+), 44 deletions(-) create mode 100644 nova/virt/xenapi/fake.py (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index d9abe54c5..1a2903b98 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -18,3 +18,33 @@ :mod:`xenapi` -- Nova support for XenServer and XCP through XenAPI ================================================================== """ + + +def load_sdk(flags): + """ + This method is used for loading the XenAPI SDK (fake or real) + """ + xenapi_module = \ + flags.xenapi_use_fake_session and 'nova.virt.xenapi.fake' or 'XenAPI' + from_list = \ + flags.xenapi_use_fake_session and ['fake'] or [] + + return __import__(xenapi_module, globals(), locals(), from_list, -1) + + +class HelperBase(): + """ + The class that wraps the helper methods together. + """ + XenAPI = None + + def __init__(self): + return + + @classmethod + def late_import(cls, FLAGS): + """ + Load XenAPI module in for helper class + """ + if cls.XenAPI is None: + cls.XenAPI = load_sdk(FLAGS) diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py new file mode 100644 index 000000000..8d6a39a87 --- /dev/null +++ b/nova/virt/xenapi/fake.py @@ -0,0 +1,66 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2010 Citrix Systems, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +A fake XenAPI SDK. + +Allows for xenapi helper classes testing. +""" + + +class Failure(Exception): + def __init__(self, message=None): + super(Failure, self).__init__(message) + self.details = [] + + def __str__(self): + return 'Fake XenAPI Exception' + + +class FakeSession(object): + """ + The session to invoke XenAPI SDK calls. + FIXME(armando): this is a placeholder + for the xenapi unittests branch. + """ + def __init__(self, url): + pass + + def get_xenapi(self): + """ Return the xenapi object """ + raise NotImplementedError() + + def get_xenapi_host(self): + """ Return the xenapi host """ + raise NotImplementedError() + + def call_xenapi(self, method, *args): + """Call the specified XenAPI method on a background thread. Returns + a Deferred for the result.""" + raise NotImplementedError() + + def async_call_plugin(self, plugin, fn, args): + """Call Async.host.call_plugin on a background thread. Returns a + Deferred with the task reference.""" + raise NotImplementedError() + + def wait_for_task(self, task): + """Return a Deferred that will give the result of the given task. + The task is polled until it completes.""" + raise NotImplementedError() + + def __getattr__(self, name): + raise NotImplementedError() diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index 8cb4cce3a..cb745cdaf 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -21,9 +21,10 @@ their lookup functions. """ from twisted.internet import defer +from nova.virt.xenapi import HelperBase -class NetworkHelper(): +class NetworkHelper(HelperBase): """ The class that wraps the helper methods together. """ diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 89831fe5d..2b0691c01 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -32,6 +32,7 @@ from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.compute import power_state from nova.virt import images +from nova.virt.xenapi import HelperBase from nova.virt.xenapi.volume_utils import StorageError FLAGS = flags.FLAGS @@ -44,29 +45,13 @@ XENAPI_POWER_STATE = { 'Crashed': power_state.CRASHED} -class VMHelper(): +class VMHelper(HelperBase): """ The class that wraps the helper methods together. """ - - XenAPI = None - def __init__(self): return - @classmethod - def late_import(cls): - """ - Load XenAPI module in for helper class - """ - xenapi_module = \ - FLAGS.xenapi_use_fake_session and 'nova.virt.xenapi.fake' or 'XenAPI' - from_list = \ - FLAGS.xenapi_use_fake_session and ['fake'] or [] - if cls.XenAPI is None: - cls.XenAPI = __import__(xenapi_module, - globals(), locals(), from_list, -1) - @classmethod @defer.inlineCallbacks def create_vm(cls, session, instance, kernel, ramdisk): diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 9a8db0ad4..c79245972 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -24,9 +24,11 @@ from twisted.internet import defer from nova import db from nova import context +from nova import flags from nova import exception from nova.auth.manager import AuthManager +from nova.virt.xenapi import load_sdk from nova.virt.xenapi.network_utils import NetworkHelper from nova.virt.xenapi.vm_utils import VMHelper @@ -36,10 +38,10 @@ class VMOps(object): Management class for VM-related tasks """ def __init__(self, session): - self.XenAPI = __import__('XenAPI') + self.XenAPI = load_sdk(flags.FLAGS) self._session = session # Load XenAPI module in the helper class - VMHelper.late_import() + VMHelper.late_import(flags.FLAGS) def list_instances(self): """ List VM instances """ diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index 05143ed91..4482e465c 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -30,7 +30,7 @@ from nova import context from nova import flags from nova import process from nova import utils - +from nova.virt.xenapi import HelperBase FLAGS = flags.FLAGS @@ -41,29 +41,13 @@ class StorageError(Exception): super(StorageError, self).__init__(message) -class VolumeHelper(): +class VolumeHelper(HelperBase): """ The class that wraps the helper methods together. """ - - XenAPI = None - def __init__(self): return - @classmethod - def late_import(cls): - """ - Load XenAPI module in for helper class - """ - xenapi_module = \ - FLAGS.xenapi_use_fake_session and 'nova.virt.xenapi.fake' or 'XenAPI' - from_list = \ - FLAGS.xenapi_use_fake_session and ['fake'] or [] - if cls.XenAPI is None: - cls.XenAPI = __import__(xenapi_module, - globals(), locals(), from_list, -1) - @classmethod @utils.deferredToThread def create_iscsi_storage(cls, session, info, label, description): diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index b1afdc811..1b337a6ed 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -21,6 +21,8 @@ import logging from twisted.internet import defer +from nova import flags +from nova.virt.xenapi import load_sdk from nova.virt.xenapi.vm_utils import VMHelper from nova.virt.xenapi.volume_utils import VolumeHelper from nova.virt.xenapi.volume_utils import StorageError @@ -31,11 +33,11 @@ class VolumeOps(object): Management class for Volume-related tasks """ def __init__(self, session): - self.XenAPI = __import__('XenAPI') + self.XenAPI = load_sdk(flags.FLAGS) self._session = session # Load XenAPI module in the helper classes respectively - VolumeHelper.late_import() - VMHelper.late_import() + VolumeHelper.late_import(flags.FLAGS) + VMHelper.late_import(flags.FLAGS) @defer.inlineCallbacks def attach_volume(self, instance_name, device_path, mountpoint): diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index d8d21e24d..649d5dd04 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -59,6 +59,7 @@ from twisted.internet import reactor from nova import utils from nova import flags +from nova.virt.xenapi import load_sdk from nova.virt.xenapi.vmops import VMOps from nova.virt.xenapi.volumeops import VolumeOps @@ -91,7 +92,7 @@ flags.DEFINE_string('target_port', '3260', 'iSCSI Target Port, 3260 Default') flags.DEFINE_string('iqn_prefix', - 'iqn.2010-12.org.openstack', + 'iqn.2010-10.org.openstack', 'IQN Prefix') @@ -156,8 +157,11 @@ class XenAPISession(object): def __init__(self, url, user, pw): # This is loaded late so that there's no need to install this # library when not using XenAPI. - self.XenAPI = __import__('XenAPI') - self._session = self.XenAPI.Session(url) + self.XenAPI = load_sdk(FLAGS) + if FLAGS.xenapi_use_fake_session: + self._session = self.XenAPI.FakeSession(url) + else: + self._session = self.XenAPI.Session(url) self._session.login_with_password(user, pw) def get_xenapi(self): -- cgit From bfe019e0de486eea09e4702262cd228791a4694c Mon Sep 17 00:00:00 2001 From: Soren Hansen Date: Tue, 14 Dec 2010 15:33:18 +0100 Subject: Now that we have a templating engine, let's use it. Consolidate all the libvirt templates into one, extending the unit tests to make sure I didn't mess up. --- nova/virt/libvirt.qemu.xml.template | 37 --------------- nova/virt/libvirt.rescue.qemu.xml.template | 37 --------------- nova/virt/libvirt.rescue.uml.xml.template | 26 ---------- nova/virt/libvirt.rescue.xen.xml.template | 34 ------------- nova/virt/libvirt.uml.xml.template | 26 ---------- nova/virt/libvirt.xen.xml.template | 35 -------------- nova/virt/libvirt.xml.template | 76 ++++++++++++++++++++++++++++++ nova/virt/libvirt_conn.py | 60 +++++------------------ 8 files changed, 89 insertions(+), 242 deletions(-) delete mode 100644 nova/virt/libvirt.qemu.xml.template delete mode 100644 nova/virt/libvirt.rescue.qemu.xml.template delete mode 100644 nova/virt/libvirt.rescue.uml.xml.template delete mode 100644 nova/virt/libvirt.rescue.xen.xml.template delete mode 100644 nova/virt/libvirt.uml.xml.template delete mode 100644 nova/virt/libvirt.xen.xml.template create mode 100644 nova/virt/libvirt.xml.template (limited to 'nova/virt') diff --git a/nova/virt/libvirt.qemu.xml.template b/nova/virt/libvirt.qemu.xml.template deleted file mode 100644 index 739eceaaa..000000000 --- a/nova/virt/libvirt.qemu.xml.template +++ /dev/null @@ -1,37 +0,0 @@ - - ${name} - - hvm -#if $getVar('kernel', None) - ${kernel} - #if $getVar('ramdisk', None) - ${ramdisk} - #end if - root=/dev/vda1 console=ttyS0 -#end if - - - - - ${memory_kb} - ${vcpus} - - - - - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.rescue.qemu.xml.template b/nova/virt/libvirt.rescue.qemu.xml.template deleted file mode 100644 index c0ffbdcee..000000000 --- a/nova/virt/libvirt.rescue.qemu.xml.template +++ /dev/null @@ -1,37 +0,0 @@ - - %(name)s - - hvm - %(basepath)s/rescue-kernel - %(basepath)s/rescue-ramdisk - root=/dev/vda1 console=ttyS0 - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.rescue.uml.xml.template b/nova/virt/libvirt.rescue.uml.xml.template deleted file mode 100644 index 836f47532..000000000 --- a/nova/virt/libvirt.rescue.uml.xml.template +++ /dev/null @@ -1,26 +0,0 @@ - - %(name)s - %(memory_kb)s - - %(type)s - /usr/bin/linux - /dev/ubda1 - - - - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.rescue.xen.xml.template b/nova/virt/libvirt.rescue.xen.xml.template deleted file mode 100644 index 3b8d27237..000000000 --- a/nova/virt/libvirt.rescue.xen.xml.template +++ /dev/null @@ -1,34 +0,0 @@ - - %(name)s - - linux - %(basepath)s/kernel - %(basepath)s/ramdisk - /dev/xvda1 - ro - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.uml.xml.template b/nova/virt/libvirt.uml.xml.template deleted file mode 100644 index da9588049..000000000 --- a/nova/virt/libvirt.uml.xml.template +++ /dev/null @@ -1,26 +0,0 @@ - - ${name} - ${memory_kb} - - ${type} - /usr/bin/linux - /dev/ubda1 - - - - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.xen.xml.template b/nova/virt/libvirt.xen.xml.template deleted file mode 100644 index 8f650e512..000000000 --- a/nova/virt/libvirt.xen.xml.template +++ /dev/null @@ -1,35 +0,0 @@ - - ${name} - - linux -#if $getVar('kernel', None) - ${kernel} - #if $getVar('ramdisk', None) - ${ramdisk} - #end if - root=/dev/vda1 console=ttyS0 -#end if - /dev/xvda1 - ro - - - - - ${memory_kb} - ${vcpus} - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.xml.template b/nova/virt/libvirt.xml.template new file mode 100644 index 000000000..13d087330 --- /dev/null +++ b/nova/virt/libvirt.xml.template @@ -0,0 +1,76 @@ + + ${name} + ${memory_kb} + +#if $type == 'uml' + #set $disk_prefix = 'ubd' + #set $disk_bus = 'uml' + uml + /usr/bin/linux + /dev/ubda1 +#else + #if $type == 'xen' + #set $disk_prefix = 'sd' + #set $disk_bus = 'scsi' + linux + /dev/xvda1 + #else + #set $disk_prefix = 'vd' + #set $disk_bus = 'virtio' + hvm + #end if + #if $getVar('rescue', False) + ${basepath}/rescue-kernel + ${basepath}/rescue-ramdisk + #else + #if $getVar('kernel', None) + ${kernel} + #if $type == 'xen' + ro + #else + root=/dev/vda1 console=ttyS0 + #end if + #if $getVar('ramdisk', None) + ${ramdisk} + #end if + #else + + #end if + #end if +#end if + + + + + ${vcpus} + +#if $getVar('rescue', False) + + + + + + + + +#else + + + + +#end if + + + + + + + + + + + + + + + diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 81dbbaad5..2865c18ac 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -27,12 +27,7 @@ Supports KVM, QEMU, UML, and XEN. :libvirt_type: Libvirt domain type. Can be kvm, qemu, uml, xen (default: kvm). :libvirt_uri: Override for the default libvirt URI (depends on libvirt_type). -:libvirt_xml_template: Libvirt XML Template (QEmu/KVM). -:libvirt_xen_xml_template: Libvirt XML Template (Xen). -:libvirt_uml_xml_template: Libvirt XML Template (User Mode Linux). -:libvirt_rescue_xml_template: XML template for rescue mode (KVM & QEMU). -:libvirt_rescue_xen_xml_template: XML templage for rescue mode (XEN). -:libvirt_rescue_uml_xml_template: XML template for rescue mode (UML). +:libvirt_xml_template: Libvirt XML Template. :rescue_image_id: Rescue ami image (default: ami-rescue). :rescue_kernel_id: Rescue aki image (default: aki-rescue). :rescue_ramdisk_id: Rescue ari image (default: ari-rescue). @@ -70,31 +65,13 @@ libxml2 = None FLAGS = flags.FLAGS -flags.DEFINE_string('libvirt_rescue_xml_template', - utils.abspath('virt/libvirt.rescue.qemu.xml.template'), - 'Libvirt RESCUE XML Template for QEmu/KVM') -flags.DEFINE_string('libvirt_rescue_xen_xml_template', - utils.abspath('virt/libvirt.rescue.xen.xml.template'), - 'Libvirt RESCUE XML Template for xen') -flags.DEFINE_string('libvirt_rescue_uml_xml_template', - utils.abspath('virt/libvirt.rescue.uml.xml.template'), - 'Libvirt RESCUE XML Template for user-mode-linux') # TODO(vish): These flags should probably go into a shared location flags.DEFINE_string('rescue_image_id', 'ami-rescue', 'Rescue ami image') flags.DEFINE_string('rescue_kernel_id', 'aki-rescue', 'Rescue aki image') flags.DEFINE_string('rescue_ramdisk_id', 'ari-rescue', 'Rescue ari image') flags.DEFINE_string('libvirt_xml_template', - utils.abspath('virt/libvirt.qemu.xml.template'), - 'Libvirt XML Template for QEmu/KVM') -flags.DEFINE_string('libvirt_xen_xml_template', - utils.abspath('virt/libvirt.xen.xml.template'), - 'Libvirt XML Template for Xen') -flags.DEFINE_string('libvirt_uml_xml_template', - utils.abspath('virt/libvirt.uml.xml.template'), - 'Libvirt XML Template for user-mode-linux') -flags.DEFINE_string('injected_network_template', - utils.abspath('virt/interfaces.template'), - 'Template file for injected network') + utils.abspath('virt/libvirt.xml.template'), + 'Libvirt XML Template') flags.DEFINE_string('libvirt_type', 'kvm', 'Libvirt domain type (valid options are: ' @@ -122,12 +99,9 @@ def get_connection(read_only): class LibvirtConnection(object): def __init__(self, read_only): - (self.libvirt_uri, - template_file, - rescue_file) = self.get_uri_and_templates() + self.libvirt_uri = self.get_uri() - self.libvirt_xml = open(template_file).read() - self.rescue_xml = open(rescue_file).read() + self.libvirt_xml = open(FLAGS.libvirt_xml_template).read() self._wrapped_conn = None self.read_only = read_only @@ -150,20 +124,14 @@ class LibvirtConnection(object): return False raise - def get_uri_and_templates(self): + def get_uri(self): if FLAGS.libvirt_type == 'uml': uri = FLAGS.libvirt_uri or 'uml:///system' - template_file = FLAGS.libvirt_uml_xml_template - rescue_file = FLAGS.libvirt_rescue_uml_xml_template elif FLAGS.libvirt_type == 'xen': uri = FLAGS.libvirt_uri or 'xen:///' - template_file = FLAGS.libvirt_xen_xml_template - rescue_file = FLAGS.libvirt_rescue_xen_xml_template else: uri = FLAGS.libvirt_uri or 'qemu:///system' - template_file = FLAGS.libvirt_xml_template - rescue_file = FLAGS.libvirt_rescue_xml_template - return uri, template_file, rescue_file + return uri def _connect(self, uri, read_only): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_NOECHOPROMPT], @@ -543,18 +511,16 @@ class LibvirtConnection(object): 'bridge_name': network['bridge'], 'mac_address': instance['mac_address'], 'ip_address': ip_address, - 'dhcp_server': dhcp_server} - if rescue: - xml = self.rescue_xml % xml_info - else: - if xml_info['kernel_id']: + 'dhcp_server': dhcp_server, + 'rescue': rescue} + if not rescue: + if instance['kernel_id']: xml_info['kernel'] = xml_info['basepath'] + "/kernel" - if xml_info['ramdisk_id']: + if instance['ramdisk_id']: xml_info['ramdisk'] = xml_info['basepath'] + "/ramdisk" - if xml_info['ramdisk_id'] or xml_info['kernel_id']: - xml_info['disk'] = xml_info['basepath'] + "/disk" + xml_info['disk'] = xml_info['basepath'] + "/disk" xml = str(Template(self.libvirt_xml, searchList=[xml_info])) logging.debug('instance %s: finished toXML method', instance['name']) -- cgit From fa7d288e6af3d997d6275d9e6778e932be9f1c3f Mon Sep 17 00:00:00 2001 From: Sandy Walsh Date: Tue, 14 Dec 2010 17:56:42 -0400 Subject: pep8 --- nova/virt/fake.py | 1 + nova/virt/libvirt_conn.py | 5 +++-- nova/virt/xenapi/network_utils.py | 1 + nova/virt/xenapi/vm_utils.py | 1 + nova/virt/xenapi/vmops.py | 1 + nova/virt/xenapi/volumeops.py | 1 + nova/virt/xenapi_conn.py | 2 ++ 7 files changed, 10 insertions(+), 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/fake.py b/nova/virt/fake.py index c56907175..59acabc21 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -259,5 +259,6 @@ class FakeConnection(object): class FakeInstance(object): + def __init__(self): self._state = power_state.NOSTATE diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 97ff49a10..5939f0afe 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -119,6 +119,7 @@ def get_connection(read_only): class LibvirtConnection(object): + def __init__(self, read_only): (self.libvirt_uri, template_file, @@ -298,12 +299,12 @@ class LibvirtConnection(object): @exception.wrap_exception def pause(self, instance, callback): raise exception.APIError("pause not supported for libvirt.") - + @defer.inlineCallbacks @exception.wrap_exception def unpause(self, instance, callback): raise exception.APIError("unpause not supported for libvirt.") - + @defer.inlineCallbacks @exception.wrap_exception def rescue(self, instance): diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index 8cb4cce3a..cffaf7f23 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -27,6 +27,7 @@ class NetworkHelper(): """ The class that wraps the helper methods together. """ + def __init__(self): return diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 77edb576e..c17dc0bed 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -49,6 +49,7 @@ class VMHelper(): """ The class that wraps the helper methods together. """ + def __init__(self): return diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 7c5db0b73..405a8518e 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -36,6 +36,7 @@ class VMOps(object): """ Management class for VM-related tasks """ + def __init__(self, session): global XenAPI if XenAPI is None: diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index a4c7a3861..1943ccab0 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -20,6 +20,7 @@ Management class for Storage-related functions (attach, detach, etc). class VolumeOps(object): + def __init__(self, session): self._session = session diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index ebd572258..fa87bb779 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -101,6 +101,7 @@ def get_connection(_): class XenAPIConnection(object): """ A connection to XenServer or Xen Cloud Platform """ + def __init__(self, url, user, pw): session = XenAPISession(url, user, pw) self._vmops = VMOps(session) @@ -155,6 +156,7 @@ class XenAPIConnection(object): class XenAPISession(object): """ The session to invoke XenAPI SDK calls """ + def __init__(self, url, user, pw): self._session = XenAPI.Session(url) self._session.login_with_password(user, pw) -- cgit From aab6a89ba1e9ace73dcb4fa68a67957e29c47f84 Mon Sep 17 00:00:00 2001 From: Soren Hansen Date: Tue, 14 Dec 2010 23:34:08 +0100 Subject: Don't attempt to fiddle with partitions for whole-disk-images. --- nova/virt/libvirt_conn.py | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 5dcb05b1f..3529be333 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -421,13 +421,13 @@ class LibvirtConnection(object): yield images.fetch(inst.image_id, basepath('disk-raw'), user, project) - if inst.kernel_id: + if inst['kernel_id']: if not os.path.exists(basepath('kernel')): - yield images.fetch(inst.kernel_id, basepath('kernel'), + yield images.fetch(inst['kernel_id'], basepath('kernel'), user, project) - if inst.ramdisk_id: + if inst['ramdisk_id']: if not os.path.exists(basepath('ramdisk')): - yield images.fetch(inst.ramdisk_id, basepath('ramdisk'), + yield images.fetch(inst['ramdisk_id'], basepath('ramdisk'), user, project) execute = lambda cmd, process_input = None, check_exit_code = True: \ @@ -439,7 +439,7 @@ class LibvirtConnection(object): # partitioned disk image where the target partition is the first # partition target_partition = None - if not inst.kernel_id: + if not inst['kernel_id']: target_partition = "1" key = str(inst['key_data']) @@ -472,7 +472,7 @@ class LibvirtConnection(object): ' into image %s (%s)', inst['name'], inst.image_id, e) - if inst.kernel_id: + if inst['kernel_id']: if os.path.exists(basepath('disk')): yield process.simple_execute('rm -f %s' % basepath('disk')) @@ -483,8 +483,13 @@ class LibvirtConnection(object): resize = True if inst['instance_type'] == 'm1.tiny' or prefix == 'rescue-': resize = False - yield disk.partition(basepath('disk-raw'), basepath('disk'), - local_bytes, resize, execute=execute) + + if inst['kernel_id']: + yield disk.partition(basepath('disk-raw'), basepath('disk'), + local_bytes, resize, execute=execute) + else: + os.rename(basepath('disk-raw'), basepath('disk')) + yield disk.extend(basepath('disk'), local_bytes, execute=execute) if FLAGS.libvirt_type == 'uml': yield process.simple_execute('sudo chown root %s' % -- cgit From a2a8406b5d793545c8ecb359e18b80bba618c509 Mon Sep 17 00:00:00 2001 From: termie Date: Tue, 14 Dec 2010 16:05:39 -0800 Subject: updates per review --- nova/virt/fake.py | 4 ++-- nova/virt/libvirt_conn.py | 14 ++++++-------- nova/virt/xenapi/network_utils.py | 5 ++--- nova/virt/xenapi/vmops.py | 3 +-- nova/virt/xenapi_conn.py | 6 ++++-- 5 files changed, 15 insertions(+), 17 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/fake.py b/nova/virt/fake.py index 91dc8173b..77bc926c2 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -122,13 +122,13 @@ class FakeConnection(object): """ Rescue the specified instance. """ - return + pass def unrescue(self, instance): """ Unrescue the specified instance. """ - return + pass def destroy(self, instance): """ diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 715e7234c..ba51f8f69 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -215,7 +215,7 @@ class LibvirtConnection(object): self._cleanup(instance) done.send() - greenthread.spawn(_wait_for_time) + greenthread.spawn(_wait_for_timer) return done def _cleanup(self, instance): @@ -365,9 +365,9 @@ class LibvirtConnection(object): if virsh_output.startswith('/dev/'): logging.info('cool, it\'s a device') - r = utils.execute("sudo dd if=%s iflag=nonblock" % - virsh_output, check_exit_code=False) - return r[0] + out, err = utils.execute("sudo dd if=%s iflag=nonblock" % + virsh_output, check_exit_code=False) + return out else: return '' @@ -388,8 +388,7 @@ class LibvirtConnection(object): console_log = os.path.join(FLAGS.instances_path, instance['name'], 'console.log') - utils.execute('sudo chown %d %s' % (os.getuid(), - console_log)) + utils.execute('sudo chown %d %s' % (os.getuid(), console_log)) if FLAGS.libvirt_type == 'xen': # Xen is special @@ -476,7 +475,6 @@ class LibvirtConnection(object): ['local_gb'] * 1024 * 1024 * 1024) - resize = inst['instance_type'] != 'm1.tiny' resize = True if inst['instance_type'] == 'm1.tiny' or prefix == 'rescue-': resize = False @@ -743,7 +741,7 @@ class NWFilterFirewall(object): if callable(xml): xml = xml() - # execute in a native thread and block until done + # execute in a native thread and block current greenthread until done tpool.execute(self._conn.nwfilterDefineXML, xml) @staticmethod diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index d8632f393..012954394 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -30,10 +30,9 @@ class NetworkHelper(): @classmethod def find_network_with_bridge(cls, session, bridge): - """ Return the network on which the bridge is attached, if found """ + """ Return the network on which the bridge is attached, if found.""" expr = 'field "bridge" = "%s"' % bridge - networks = session.call_xenapi('network.get_all_records_where', - expr) + networks = session.call_xenapi('network.get_all_records_where', expr) if len(networks) == 1: return networks.keys()[0] elif len(networks) > 1: diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index b6b92b926..3034df9e1 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -107,8 +107,7 @@ class VMOps(object): if vdis: for vdi in vdis: try: - task = self._session.call_xenapi('Async.VDI.destroy', - vdi) + task = self._session.call_xenapi('Async.VDI.destroy', vdi) self._session.wait_for_task(task) except XenAPI.Failure, exc: logging.warn(exc) diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index df8e42d34..424311133 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -175,9 +175,11 @@ class XenAPISession(object): The task is polled until it completes.""" done = event.Event() - loop = utis.LoopingTask(self._poll_task, task, done) + loop = utils.LoopingTask(self._poll_task, task, done) loop.start(FLAGS.xenapi_task_poll_interval, now=True) - return done.wait() + rv = done.wait() + loop.stop() + return rv def _poll_task(self, task, done): """Poll the given XenAPI task, and fire the given Deferred if we -- cgit From dada56794679b213b2d80e4e1f907a212b73f54e Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Wed, 15 Dec 2010 17:50:05 +0000 Subject: * code cleanup * revised unittest approach * added stubout and a number of tests --- nova/virt/xenapi/__init__.py | 22 +--------------------- nova/virt/xenapi/fake.py | 40 +++------------------------------------- nova/virt/xenapi/vmops.py | 6 ++---- nova/virt/xenapi/volumeops.py | 7 +++---- nova/virt/xenapi_conn.py | 24 +++++++++++------------- 5 files changed, 20 insertions(+), 79 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index 1a2903b98..c7038deae 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -20,31 +20,11 @@ """ -def load_sdk(flags): - """ - This method is used for loading the XenAPI SDK (fake or real) - """ - xenapi_module = \ - flags.xenapi_use_fake_session and 'nova.virt.xenapi.fake' or 'XenAPI' - from_list = \ - flags.xenapi_use_fake_session and ['fake'] or [] - - return __import__(xenapi_module, globals(), locals(), from_list, -1) - - class HelperBase(): """ - The class that wraps the helper methods together. + The base for helper classes. This adds the XenAPI class attribute """ XenAPI = None def __init__(self): return - - @classmethod - def late_import(cls, FLAGS): - """ - Load XenAPI module in for helper class - """ - if cls.XenAPI is None: - cls.XenAPI = load_sdk(FLAGS) diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py index f5fea3cc2..038064e8e 100644 --- a/nova/virt/xenapi/fake.py +++ b/nova/virt/xenapi/fake.py @@ -154,7 +154,7 @@ class Failure(Exception): def __str__(self): try: return str(self.details) - except Exception, exn: + except Exception, exc: return "XenAPI Fake Failure: %s" % str(self.details) def _details_map(self): @@ -324,8 +324,8 @@ class SessionBase(object): try: task['result'] = self.xenapi_request(func, params[1:]) task['status'] = 'success' - except Failure, exn: - task['error_info'] = exn.details + except Failure, exc: + task['error_info'] = exc.details task['status'] = 'failed' task['finished'] = datetime.datetime.now() return task_ref @@ -372,37 +372,3 @@ class _Dispatcher: def __call__(self, *args): return self.__send(self.__name, args) - - -class FakeSession(SessionBase): - def __init__(self, uri): - super(FakeSession, self).__init__(uri) - - def network_get_all_records_where(self, _1, _2): - return self.xenapi.network.get_all_records() - - def host_call_plugin(self, _1, _2, _3, _4, _5): - return '' - - def VM_start(self, _1, ref, _2, _3): - vm = get_record('VM', ref) - if vm['power_state'] != 'Halted': - raise Failure(['VM_BAD_POWER_STATE', ref, 'Halted', - vm['power_state']]) - vm['power_state'] = 'Running' - - def VBD_plug(self, _1, _2): - #FIXME(armando):make proper plug - pass - - def VDI_introduce(self, _1, uuid, _2, _3, _4, _5, - _6, _7, _8, _9, _10, _11): - #FIXME(armando):make proper introduce - valid_vdi = False - refs = get_all('VDI') - for ref in refs: - rec = get_record('VDI', ref) - if rec['uuid'] == uuid: - valid_vdi = True - if not valid_vdi: - raise Failure([['INVALID_VDI', 'session', self._session]]) diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 36b8fecc2..abaa1f5f1 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -28,7 +28,6 @@ from nova import flags from nova import exception from nova.auth.manager import AuthManager -from nova.virt.xenapi import load_sdk from nova.virt.xenapi.network_utils import NetworkHelper from nova.virt.xenapi.vm_utils import VMHelper @@ -38,10 +37,9 @@ class VMOps(object): Management class for VM-related tasks """ def __init__(self, session): - self.XenAPI = load_sdk(flags.FLAGS) + self.XenAPI = session.get_imported_xenapi() self._session = session - # Load XenAPI module in the helper class - VMHelper.late_import(flags.FLAGS) + VMHelper.XenAPI = self.XenAPI def list_instances(self): """ List VM instances """ diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index 1b337a6ed..68806c4c2 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -22,7 +22,6 @@ import logging from twisted.internet import defer from nova import flags -from nova.virt.xenapi import load_sdk from nova.virt.xenapi.vm_utils import VMHelper from nova.virt.xenapi.volume_utils import VolumeHelper from nova.virt.xenapi.volume_utils import StorageError @@ -33,11 +32,11 @@ class VolumeOps(object): Management class for Volume-related tasks """ def __init__(self, session): - self.XenAPI = load_sdk(flags.FLAGS) + self.XenAPI = session.get_imported_xenapi() self._session = session # Load XenAPI module in the helper classes respectively - VolumeHelper.late_import(flags.FLAGS) - VMHelper.late_import(flags.FLAGS) + VolumeHelper.XenAPI = self.XenAPI + VMHelper.XenAPI = self.XenAPI @defer.inlineCallbacks def attach_volume(self, instance_name, device_path, mountpoint): diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 5f2b9c7c6..a7e3a6723 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -36,7 +36,6 @@ reactor thread if the VM.get_by_name_label or VM.get_record calls block. **Related Flags** -:xenapi_use_fake_session: To be set for unit testing :xenapi_connection_url: URL for connection to XenServer/Xen Cloud Platform. :xenapi_connection_username: Username for connection to XenServer/Xen Cloud Platform (default: root). @@ -59,15 +58,11 @@ from twisted.internet import reactor from nova import utils from nova import flags -from nova.virt.xenapi import load_sdk from nova.virt.xenapi.vmops import VMOps from nova.virt.xenapi.volumeops import VolumeOps FLAGS = flags.FLAGS -flags.DEFINE_boolean('xenapi_use_fake_session', - False, - 'Set to true in order to use the fake XenAPI SDK') flags.DEFINE_string('xenapi_connection_url', None, 'URL for connection to XenServer/Xen Cloud Platform.' @@ -159,15 +154,14 @@ class XenAPIConnection(object): class XenAPISession(object): """ The session to invoke XenAPI SDK calls """ def __init__(self, url, user, pw): - # This is loaded late so that there's no need to install this - # library when not using XenAPI. - self.XenAPI = load_sdk(FLAGS) - if FLAGS.xenapi_use_fake_session: - self._session = self.XenAPI.FakeSession(url) - else: - self._session = self.XenAPI.Session(url) + self.XenAPI = self.get_imported_xenapi() + self._session = self._create_session(url) self._session.login_with_password(user, pw) + def get_imported_xenapi(self): + """Stubout point. This can be replaced with a mock xenapi module.""" + return __import__('XenAPI') + def get_xenapi(self): """ Return the xenapi object """ return self._session.xenapi @@ -200,6 +194,10 @@ class XenAPISession(object): reactor.callLater(0, self._poll_task, task, d) return d + def _create_session(self, url): + """Stubout point. This can be replaced with a mock session.""" + return self.XenAPI.Session(url) + @utils.deferredToThread def _poll_task(self, task, deferred): """Poll the given XenAPI task, and fire the given Deferred if we @@ -220,7 +218,7 @@ class XenAPISession(object): error_info) deferred.errback(self.XenAPI.Failure(error_info)) #logging.debug('Polling task %s done.', task) - except self.XenAPI.Failure, exc: + except Exception, exc: logging.warn(exc) deferred.errback(exc) -- cgit From fdf067037981c2b4b4501258919af0f9e1d0ec26 Mon Sep 17 00:00:00 2001 From: termie Date: Wed, 15 Dec 2010 10:38:30 -0800 Subject: add missing import --- nova/virt/xenapi_conn.py | 2 ++ 1 file changed, 2 insertions(+) (limited to 'nova/virt') diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 424311133..a88101ad0 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -51,6 +51,8 @@ import logging import sys import xmlrpclib +from eventlet import event + from nova import utils from nova import flags from nova.virt.xenapi.vmops import VMOps -- cgit From 9a8113584edc9a8dbf42e7039b373429c11a7760 Mon Sep 17 00:00:00 2001 From: termie Date: Wed, 15 Dec 2010 11:53:18 -0800 Subject: fixes for xenapi (thanks sandywalsh) --- nova/virt/xenapi_conn.py | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index a88101ad0..09d399da4 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -52,6 +52,7 @@ import sys import xmlrpclib from eventlet import event +from eventlet import tpool from nova import utils from nova import flags @@ -164,20 +165,20 @@ class XenAPISession(object): f = self._session.xenapi for m in method.split('.'): f = f.__getattr__(m) - return f(*args) + return tpool.execute(f, *args) def async_call_plugin(self, plugin, fn, args): """Call Async.host.call_plugin on a background thread.""" - return _unwrap_plugin_exceptions( - self._session.xenapi.Async.host.call_plugin, - self.get_xenapi_host(), plugin, fn, args) + return tpool.execute(_unwrap_plugin_exceptions, + self._session.xenapi.Async.host.call_plugin, + self.get_xenapi_host(), plugin, fn, args) def wait_for_task(self, task): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" done = event.Event() - loop = utils.LoopingTask(self._poll_task, task, done) + loop = utils.LoopingCall(self._poll_task, task, done) loop.start(FLAGS.xenapi_task_poll_interval, now=True) rv = done.wait() loop.stop() -- cgit From a87b4081c6617ba193836ad12008204d62814549 Mon Sep 17 00:00:00 2001 From: Sandy Walsh Date: Wed, 15 Dec 2010 18:23:51 -0400 Subject: fixup after merge with trunk --- nova/virt/libvirt_conn.py | 2 -- 1 file changed, 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index d7abc874a..d4d616b31 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -295,12 +295,10 @@ class LibvirtConnection(object): def pause(self, instance, callback): raise exception.APIError("pause not supported for libvirt.") - @defer.inlineCallbacks @exception.wrap_exception def unpause(self, instance, callback): raise exception.APIError("unpause not supported for libvirt.") - @defer.inlineCallbacks @exception.wrap_exception def rescue(self, instance): self.destroy(instance, False) -- cgit From 8152acf7c3df83a04591fdafb21201965da7bfad Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 16 Dec 2010 17:47:48 +0000 Subject: fake session clean-up --- nova/virt/xenapi/fake.py | 34 ++++++++++++++++++++++------------ 1 file changed, 22 insertions(+), 12 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py index 038064e8e..a46f3fd80 100644 --- a/nova/virt/xenapi/fake.py +++ b/nova/virt/xenapi/fake.py @@ -105,9 +105,10 @@ def create_vdi(name_label, read_only, sr_ref, sharable): }) -def create_pbd(config, attached): +def create_pbd(config, sr_ref, attached): return _create_object('PBD', { 'device-config': config, + 'SR': sr_ref, 'currently-attached': attached, }) @@ -126,6 +127,21 @@ def _create_object(table, obj): return ref +def _create_sr(table, obj): + sr_type = obj[6] + # Forces fake to support iscsi only + if sr_type != 'iscsi': + raise Failure(['SR_UNKNOWN_DRIVER', sr_type]) + sr_ref = _create_object(table, obj[2]) + vdi_ref = create_vdi('', False, sr_ref, False) + pbd_ref = create_pbd('', sr_ref, True) + _db_content['SR'][sr_ref]['VDIs'] = [vdi_ref] + _db_content['SR'][sr_ref]['PBDs'] = [pbd_ref] + _db_content['VDI'][vdi_ref]['SR'] = sr_ref + _db_content['PBD'][pbd_ref]['SR'] = sr_ref + return sr_ref + + def get_all(table): return _db_content[table].keys() @@ -296,19 +312,13 @@ class SessionBase(object): def _create(self, name, params): self._check_session(params) - expected = 2 - if name == 'SR.create': - expected = 10 + is_sr_create = name == 'SR.create' + # Storage Repositories have a different API + expected = is_sr_create and 10 or 2 self._check_arg_count(params, expected) (cls, _) = name.split('.') - if name == 'SR.create': - vdi_ref = create_vdi('', False, '', False) - pbd_ref = create_pbd('', True) - params[2]['VDIs'] = [vdi_ref] - params[2]['PBDs'] = [pbd_ref] - ref = _create_object(cls, params[2]) - else: - ref = _create_object(cls, params[1]) + ref = is_sr_create and \ + _create_sr(cls, params) or _create_object(cls, params[1]) obj = get_record(cls, ref) # Add RO fields -- cgit From db96fd559d28bcfdf8cc29d79b9afca6dea1cfb7 Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Thu, 16 Dec 2010 18:44:42 +0000 Subject: reviewed the FIXMEs, and spotted an uncaught exception in volume_utils...yay! --- nova/virt/xenapi/fake.py | 1 + nova/virt/xenapi/volume_utils.py | 29 +++++++++++++++++------------ 2 files changed, 18 insertions(+), 12 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/fake.py b/nova/virt/xenapi/fake.py index a46f3fd80..7877b5905 100644 --- a/nova/virt/xenapi/fake.py +++ b/nova/virt/xenapi/fake.py @@ -102,6 +102,7 @@ def create_vdi(name_label, read_only, sr_ref, sharable): 'location': '', 'xenstore_data': '', 'sm_config': {}, + 'VBDs': {}, }) diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index 4482e465c..8d1d6fb81 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -152,18 +152,23 @@ class VolumeHelper(HelperBase): logging.warn(exc) raise StorageError('Unable to get record of VDI %s on' % vdis[0]) else: - return session.get_xenapi().VDI.introduce( - vdi_rec['uuid'], - vdi_rec['name_label'], - vdi_rec['name_description'], - vdi_rec['SR'], - vdi_rec['type'], - vdi_rec['sharable'], - vdi_rec['read_only'], - vdi_rec['other_config'], - vdi_rec['location'], - vdi_rec['xenstore_data'], - vdi_rec['sm_config']) + try: + vdi_ref = session.get_xenapi().VDI.introduce( + vdi_rec['uuid'], + vdi_rec['name_label'], + vdi_rec['name_description'], + vdi_rec['SR'], + vdi_rec['type'], + vdi_rec['sharable'], + vdi_rec['read_only'], + vdi_rec['other_config'], + vdi_rec['location'], + vdi_rec['xenstore_data'], + vdi_rec['sm_config']) + except cls.XenAPI.Failure, exc: + logging.warn(exc) + raise StorageError('Unable to introduce VDI for SR %s' + % sr_ref) @classmethod @defer.inlineCallbacks -- cgit From 9b049acc27d477a1ab9e13c9e064e59d8bd0a3ae Mon Sep 17 00:00:00 2001 From: termie Date: Thu, 16 Dec 2010 10:52:30 -0800 Subject: pep8 fixes --- nova/virt/libvirt_conn.py | 12 ++++++------ nova/virt/xenapi_conn.py | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index ba51f8f69..5a8c71850 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -205,7 +205,7 @@ class LibvirtConnection(object): timer.f = _wait_for_shutdown timer_done = timer.start(interval=0.5, now=True) - + # NOTE(termie): this is strictly superfluous (we could put the # cleanup code in the timer), but this emulates the # previous model so I am keeping it around until @@ -387,7 +387,7 @@ class LibvirtConnection(object): def get_console_output(self, instance): console_log = os.path.join(FLAGS.instances_path, instance['name'], 'console.log') - + utils.execute('sudo chown %d %s' % (os.getuid(), console_log)) if FLAGS.libvirt_type == 'xen': @@ -439,11 +439,11 @@ class LibvirtConnection(object): if not os.path.exists(basepath('ramdisk')): images.fetch(inst.ramdisk_id, basepath('ramdisk'), user, project) - + def execute(cmd, process_input=None, check_exit_code=True): - return utils.execute(cmd=cmd, - process_input=process_input, - check_exit_code=check_exit_code) + return utils.execute(cmd=cmd, + process_input=process_input, + check_exit_code=check_exit_code) key = str(inst['key_data']) net = None diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 09d399da4..6beb08f5e 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -200,7 +200,7 @@ class XenAPISession(object): error_info = self._session.xenapi.task.get_error_info(task) logging.warn('Task %s status: %s. %s', task, status, error_info) - done.send_exception(XenAPI.Failure(error_info)) + done.send_exception(XenAPI.Failure(error_info)) #logging.debug('Polling task %s done.', task) except XenAPI.Failure, exc: logging.warn(exc) -- cgit From 611935aa3e3a66e9638b0c127041a6fca4788b9c Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Thu, 16 Dec 2010 15:03:37 -0600 Subject: Put flags back in vm_utils --- nova/virt/xenapi/vm_utils.py | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index dde138404..b83ae9475 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -21,15 +21,20 @@ their attributes like VDIs, VIFs, as well as their lookup functions. import logging import urllib + from xml.dom import minidom +from nova import flags from nova import utils + from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.compute import power_state from nova.virt import images +FLAGS = flags.FLAGS + XENAPI_POWER_STATE = { 'Halted': power_state.SHUTDOWN, 'Running': power_state.RUNNING, @@ -37,7 +42,6 @@ XENAPI_POWER_STATE = { 'Suspended': power_state.SHUTDOWN, # FIXME 'Crashed': power_state.CRASHED} - XenAPI = None -- cgit From e5a3d993cb13c8dc5e984a67521f77ce8fdf8e4c Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Thu, 16 Dec 2010 15:19:35 -0600 Subject: Removed unnecessary blank lines --- nova/virt/xenapi/vm_utils.py | 2 -- 1 file changed, 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index b83ae9475..2f5d78e75 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -21,12 +21,10 @@ their attributes like VDIs, VIFs, as well as their lookup functions. import logging import urllib - from xml.dom import minidom from nova import flags from nova import utils - from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.compute import power_state -- cgit From 7954862c8133bacd5e612864a26e7d0ae9b0d663 Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Thu, 16 Dec 2010 15:54:38 -0600 Subject: Added Instance Diagnostics DB model --- nova/virt/xenapi/vm_utils.py | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 2f5d78e75..659559c31 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -228,11 +228,7 @@ class VMHelper(): try: host = session.get_xenapi_host() host_ip = session.get_xenapi().host.get_record(host)["address"] - metrics = session.get_xenapi().VM_guest_metrics.get_record( - record["guest_metrics"]) - diags = { - "Kernel": metrics["os_version"]["uname"], - "Distro": metrics["os_version"]["name"]} + diags = {} xml = get_rrd(host_ip, record["uuid"]) if xml: rrd = minidom.parseString(xml) -- cgit From ca81b0c12a3853942e9ce85154c38dad381ead0e Mon Sep 17 00:00:00 2001 From: Armando Migliaccio Date: Sat, 18 Dec 2010 00:50:49 +0000 Subject: fixed unittests and further clean-up post-eventlet merge --- nova/virt/xenapi/__init__.py | 2 +- nova/virt/xenapi/network_utils.py | 2 +- nova/virt/xenapi/vm_utils.py | 3 +-- nova/virt/xenapi/vmops.py | 8 +++++--- nova/virt/xenapi/volume_utils.py | 2 +- nova/virt/xenapi/volumeops.py | 1 - nova/virt/xenapi_conn.py | 8 ++++---- 7 files changed, 13 insertions(+), 13 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/__init__.py b/nova/virt/xenapi/__init__.py index c7038deae..c75162f08 100644 --- a/nova/virt/xenapi/__init__.py +++ b/nova/virt/xenapi/__init__.py @@ -20,7 +20,7 @@ """ -class HelperBase(): +class HelperBase(object): """ The base for helper classes. This adds the XenAPI class attribute """ diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index c292383b6..e783120fe 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -29,7 +29,7 @@ class NetworkHelper(HelperBase): The class that wraps the helper methods together. """ def __init__(self): - return + super(NetworkHelper, self).__init__() @classmethod def find_network_with_bridge(cls, session, bridge): diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 57d419773..911fcc9b2 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -24,7 +24,6 @@ import urllib from xml.dom import minidom from nova import flags -from nova import utils from nova.auth.manager import AuthManager from nova.compute import instance_types from nova.compute import power_state @@ -48,7 +47,7 @@ class VMHelper(HelperBase): The class that wraps the helper methods together. """ def __init__(self): - return + super(VMHelper, self).__init__() @classmethod def create_vm(cls, session, instance, kernel, ramdisk): diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 0be4ed07d..aa3a3ae53 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -22,7 +22,6 @@ import logging from nova import db from nova import context -from nova import flags from nova import exception from nova import utils @@ -78,6 +77,7 @@ class VMOps(object): logging.info('Spawning VM %s created %s.', instance.name, vm_ref) + # NOTE(armando): Do we really need to do this in virt? timer = utils.LoopingCall(f=None) def _wait_for_boot(): @@ -88,7 +88,8 @@ class VMOps(object): if state == power_state.RUNNING: logging.debug('Instance %s: booted', instance['name']) timer.stop() - except: + except Exception, exc: + logging.warn(exc) logging.exception('instance %s: failed to boot', instance['name']) db.instance_set_state(context.get_admin_context(), @@ -131,6 +132,7 @@ class VMOps(object): self._session.wait_for_task(task) except self.XenAPI.Failure, exc: logging.warn(exc) + # VM Destroy try: task = self._session.call_xenapi('Async.VM.destroy', vm) self._session.wait_for_task(task) @@ -149,7 +151,7 @@ class VMOps(object): """Return data about VM diagnostics""" vm = VMHelper.lookup(self._session, instance_id) if vm is None: - raise exception.Exception("Instance not found %s" % instance_id) + raise exception.NotFound("Instance not found %s" % instance_id) rec = self._session.get_xenapi().VM.get_record(vm) return VMHelper.compile_diagnostics(self._session, rec) diff --git a/nova/virt/xenapi/volume_utils.py b/nova/virt/xenapi/volume_utils.py index 255f23d88..5366078ce 100644 --- a/nova/virt/xenapi/volume_utils.py +++ b/nova/virt/xenapi/volume_utils.py @@ -43,7 +43,7 @@ class VolumeHelper(HelperBase): The class that wraps the helper methods together. """ def __init__(self): - return + super(VolumeHelper, self).__init__() @classmethod def create_iscsi_storage(cls, session, info, label, description): diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index 6c7516073..9dbb1bb14 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -19,7 +19,6 @@ Management class for Storage-related functions (attach, detach, etc). """ import logging -from nova import flags from nova.virt.xenapi.vm_utils import VMHelper from nova.virt.xenapi.volume_utils import VolumeHelper from nova.virt.xenapi.volume_utils import StorageError diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 207222744..2a8614cfd 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -119,11 +119,11 @@ class XenAPIConnection(object): def spawn(self, instance): """ Create VM instance """ - return self._vmops.spawn(instance) + self._vmops.spawn(instance) def reboot(self, instance): """ Reboot VM instance """ - return self._vmops.reboot(instance) + self._vmops.reboot(instance) def destroy(self, instance): """ Destroy VM instance """ @@ -143,13 +143,13 @@ class XenAPIConnection(object): def attach_volume(self, instance_name, device_path, mountpoint): """ Attach volume storage to VM instance """ - return self._volumeops.attach_volume(instance_name, + self._volumeops.attach_volume(instance_name, device_path, mountpoint) def detach_volume(self, instance_name, mountpoint): """ Detach volume storage to VM instance """ - return self._volumeops.detach_volume(instance_name, mountpoint) + self._volumeops.detach_volume(instance_name, mountpoint) class XenAPISession(object): -- cgit From a2019a14f7e7902c0bfef9fe3e9b576d9f45defe Mon Sep 17 00:00:00 2001 From: Vishvananda Ishaya Date: Tue, 21 Dec 2010 03:39:28 +0000 Subject: add missing greenthread import --- nova/virt/libvirt_conn.py | 1 + 1 file changed, 1 insertion(+) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 5a8c71850..feef1390c 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -45,6 +45,7 @@ import logging import os import shutil +from eventlet import greenthread from eventlet import event from eventlet import tpool -- cgit From d2eb04cea6b7f0a669758fc1fba32e77a008a7eb Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Tue, 21 Dec 2010 11:42:25 -0600 Subject: PEP8 cleanup --- nova/virt/xenapi/vmops.py | 16 ++++++++-------- nova/virt/xenapi_conn.py | 30 +++++++++++++++--------------- 2 files changed, 23 insertions(+), 23 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index a18eacf07..bedf131df 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -44,12 +44,12 @@ class VMOps(object): VMHelper.late_import() def list_instances(self): - """ List VM instances """ + """List VM instances""" return [self._session.get_xenapi().VM.get_name_label(vm) \ for vm in self._session.get_xenapi().VM.get_all()] def spawn(self, instance): - """ Create VM instance """ + """Create VM instance""" vm = VMHelper.lookup(self._session, instance.name) if vm is not None: raise Exception('Attempted to create non-unique name %s' % @@ -81,7 +81,7 @@ class VMOps(object): vm_ref) def reboot(self, instance): - """ Reboot VM instance """ + """Reboot VM instance""" instance_name = instance.name vm = VMHelper.lookup(self._session, instance_name) if vm is None: @@ -90,7 +90,7 @@ class VMOps(object): self._session.wait_for_task(task) def destroy(self, instance): - """ Destroy VM instance """ + """Destroy VM instance""" vm = VMHelper.lookup(self._session, instance.name) if vm is None: # Don't complain, just return. This lets us clean up instances @@ -127,7 +127,7 @@ class VMOps(object): callback(ret) def pause(self, instance, callback): - """ Pause VM instance """ + """Pause VM instance""" instance_name = instance.name vm = VMHelper.lookup(self._session, instance_name) if vm is None: @@ -136,7 +136,7 @@ class VMOps(object): self._wait_with_callback(task, callback) def unpause(self, instance, callback): - """ Unpause VM instance """ + """Unpause VM instance""" instance_name = instance.name vm = VMHelper.lookup(self._session, instance_name) if vm is None: @@ -145,7 +145,7 @@ class VMOps(object): self._wait_with_callback(task, callback) def get_info(self, instance_id): - """ Return data about VM instance """ + """Return data about VM instance""" vm = VMHelper.lookup_blocking(self._session, instance_id) if vm is None: raise Exception('instance not present %s' % instance_id) @@ -161,6 +161,6 @@ class VMOps(object): return VMHelper.compile_diagnostics(self._session, rec) def get_console_output(self, instance): - """ Return snapshot of console """ + """Return snapshot of console""" # TODO: implement this to fix pylint! return 'FAKE CONSOLE OUTPUT of instance' diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 21ed2cd65..3a9084d89 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -101,7 +101,7 @@ def get_connection(_): class XenAPIConnection(object): - """ A connection to XenServer or Xen Cloud Platform """ + """A connection to XenServer or Xen Cloud Platform""" def __init__(self, url, user, pw): session = XenAPISession(url, user, pw) @@ -109,31 +109,31 @@ class XenAPIConnection(object): self._volumeops = VolumeOps(session) def list_instances(self): - """ List VM instances """ + """List VM instances""" return self._vmops.list_instances() def spawn(self, instance): - """ Create VM instance """ + """Create VM instance""" self._vmops.spawn(instance) def reboot(self, instance): - """ Reboot VM instance """ + """Reboot VM instance""" self._vmops.reboot(instance) def destroy(self, instance): - """ Destroy VM instance """ + """Destroy VM instance""" self._vmops.destroy(instance) def pause(self, instance, callback): - """ Pause VM instance """ + """Pause VM instance""" self._vmops.pause(instance, callback) def unpause(self, instance, callback): - """ Unpause paused VM instance """ + """Unpause paused VM instance""" self._vmops.unpause(instance, callback) def get_info(self, instance_id): - """ Return data about VM instance """ + """Return data about VM instance""" return self._vmops.get_info(instance_id) def get_diagnostics(self, instance_id): @@ -141,33 +141,33 @@ class XenAPIConnection(object): return self._vmops.get_diagnostics(instance_id) def get_console_output(self, instance): - """ Return snapshot of console """ + """Return snapshot of console""" return self._vmops.get_console_output(instance) def attach_volume(self, instance_name, device_path, mountpoint): - """ Attach volume storage to VM instance """ + """Attach volume storage to VM instance""" return self._volumeops.attach_volume(instance_name, device_path, mountpoint) def detach_volume(self, instance_name, mountpoint): - """ Detach volume storage to VM instance """ + """Detach volume storage to VM instance""" return self._volumeops.detach_volume(instance_name, mountpoint) class XenAPISession(object): - """ The session to invoke XenAPI SDK calls """ + """The session to invoke XenAPI SDK calls""" def __init__(self, url, user, pw): self._session = XenAPI.Session(url) self._session.login_with_password(user, pw) def get_xenapi(self): - """ Return the xenapi object """ + """Return the xenapi object""" return self._session.xenapi def get_xenapi_host(self): - """ Return the xenapi host """ + """Return the xenapi host""" return self._session.xenapi.session.get_this_host(self._session.handle) def call_xenapi(self, method, *args): @@ -218,7 +218,7 @@ class XenAPISession(object): def _unwrap_plugin_exceptions(func, *args, **kwargs): - """ Parse exception details """ + """Parse exception details""" try: return func(*args, **kwargs) except XenAPI.Failure, exc: -- cgit From aa0639b00c3cd4b7bd5dd7dc9027e86d0f43150a Mon Sep 17 00:00:00 2001 From: Vishvananda Ishaya Date: Tue, 21 Dec 2010 18:57:11 +0000 Subject: change virtualization to not get network through project --- nova/virt/libvirt_conn.py | 4 ++-- nova/virt/xenapi/vmops.py | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index feef1390c..9be363661 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -488,8 +488,8 @@ class LibvirtConnection(object): def to_xml(self, instance, rescue=False): # TODO(termie): cache? logging.debug('instance %s: starting toXML method', instance['name']) - network = db.project_get_network(context.get_admin_context(), - instance['project_id']) + network = db.network_get_by_instance(context.get_admin_context(), + instance['id']) # FIXME(vish): stick this in db instance_type = instance['instance_type'] instance_type = instance_types.INSTANCE_TYPES[instance_type] diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 3034df9e1..de40815e2 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -54,8 +54,8 @@ class VMOps(object): raise Exception('Attempted to create non-unique name %s' % instance.name) - bridge = db.project_get_network(context.get_admin_context(), - instance.project_id).bridge + bridge = db.network_get_by_instance(context.get_admin_context(), + instance['id'])['bridge'] network_ref = \ NetworkHelper.find_network_with_bridge(self._session, bridge) -- cgit From b3fce81e384aec46c0963db1f144cc58d02340a4 Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Tue, 21 Dec 2010 14:13:18 -0600 Subject: Log all XenAPI actions --- nova/virt/xenapi/vmops.py | 16 ++++++++-------- nova/virt/xenapi_conn.py | 33 +++++++++++++++++++++++---------- 2 files changed, 31 insertions(+), 18 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index bedf131df..5b9495b67 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -87,7 +87,7 @@ class VMOps(object): if vm is None: raise Exception('instance not present %s' % instance_name) task = self._session.call_xenapi('Async.VM.clean_reboot', vm) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) def destroy(self, instance): """Destroy VM instance""" @@ -101,7 +101,7 @@ class VMOps(object): try: task = self._session.call_xenapi('Async.VM.hard_shutdown', vm) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) except XenAPI.Failure, exc: logging.warn(exc) # Disk clean-up @@ -109,19 +109,19 @@ class VMOps(object): for vdi in vdis: try: task = self._session.call_xenapi('Async.VDI.destroy', vdi) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) except XenAPI.Failure, exc: logging.warn(exc) try: task = self._session.call_xenapi('Async.VM.destroy', vm) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) except XenAPI.Failure, exc: logging.warn(exc) - def _wait_with_callback(self, task, callback): + def _wait_with_callback(self, instance_id, task, callback): ret = None try: - ret = self._session.wait_for_task(task) + ret = self._session.wait_for_task(instance_id, task) except XenAPI.Failure, exc: logging.warn(exc) callback(ret) @@ -133,7 +133,7 @@ class VMOps(object): if vm is None: raise Exception('instance not present %s' % instance_name) task = self._session.call_xenapi('Async.VM.pause', vm) - self._wait_with_callback(task, callback) + self._wait_with_callback(instance.id, task, callback) def unpause(self, instance, callback): """Unpause VM instance""" @@ -142,7 +142,7 @@ class VMOps(object): if vm is None: raise Exception('instance not present %s' % instance_name) task = self._session.call_xenapi('Async.VM.unpause', vm) - self._wait_with_callback(task, callback) + self._wait_with_callback(instance.id, task, callback) def get_info(self, instance_id): """Return data about VM instance""" diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 3a9084d89..33a55d7b2 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -54,6 +54,8 @@ import xmlrpclib from eventlet import event from eventlet import tpool +from nova import context +from nova import db from nova import utils from nova import flags from nova.virt.xenapi.vmops import VMOps @@ -183,35 +185,46 @@ class XenAPISession(object): self._session.xenapi.Async.host.call_plugin, self.get_xenapi_host(), plugin, fn, args) - def wait_for_task(self, task): + def wait_for_task(self, instance_id, task): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" done = event.Event() - loop = utils.LoopingCall(self._poll_task, task, done) + loop = utils.LoopingCall(self._poll_task, instance_id, task, done) loop.start(FLAGS.xenapi_task_poll_interval, now=True) rv = done.wait() loop.stop() return rv - def _poll_task(self, task, done): + def _poll_task(self, instance_id, task, done): """Poll the given XenAPI task, and fire the given Deferred if we get a result.""" try: - #logging.debug('Polling task %s...', task) + name = self._session.xenapi.task.get_name_label(task) status = self._session.xenapi.task.get_status(task) - if status == 'pending': + action = dict( + instance_id=int(instance_id), + action=name, + error=None) + if status == "pending": return - elif status == 'success': + elif status == "success": result = self._session.xenapi.task.get_result(task) - logging.info('Task %s status: success. %s', task, result) + logging.info("Task [%s] %s status: success %s" % ( + name, + task, + result)) done.send(_parse_xmlrpc_value(result)) else: error_info = self._session.xenapi.task.get_error_info(task) - logging.warn('Task %s status: %s. %s', task, status, - error_info) + action["error"] = str(error_info) + logging.warn("Task [%s] %s status: %s %s" % ( + name, + task, + status, + error_info)) done.send_exception(XenAPI.Failure(error_info)) - #logging.debug('Polling task %s done.', task) + db.instance_action_create(context.get_admin_context(), action) except XenAPI.Failure, exc: logging.warn(exc) done.send_exception(*sys.exc_info()) -- cgit From 555bea30cddfd32c42b6d7453b5afd2e7fcfb7f2 Mon Sep 17 00:00:00 2001 From: Josh Kearney Date: Tue, 21 Dec 2010 15:46:44 -0600 Subject: Filter templates and dom0 from list_instances() --- nova/virt/xenapi/vmops.py | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'nova/virt') diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 5b9495b67..3b00ce8bf 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -45,8 +45,12 @@ class VMOps(object): def list_instances(self): """List VM instances""" - return [self._session.get_xenapi().VM.get_name_label(vm) \ - for vm in self._session.get_xenapi().VM.get_all()] + vms = [] + for vm in self._session.get_xenapi().VM.get_all(): + rec = self._session.get_xenapi().VM.get_record(vm) + if not rec["is_a_template"] and not rec["is_control_domain"]: + vms.append(rec["name_label"]) + return vms def spawn(self, instance): """Create VM instance""" -- cgit From f0195ebfd2cc56cee5797fff19fb9702c51df51b Mon Sep 17 00:00:00 2001 From: Vishvananda Ishaya Date: Tue, 21 Dec 2010 21:47:13 +0000 Subject: fix reboot command to work even if a host is rebooted --- nova/virt/libvirt_conn.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'nova/virt') diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index ad101db2a..845167d9f 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -40,6 +40,7 @@ import logging import os import shutil +from eventlet import greenthread from eventlet import event from eventlet import tpool @@ -183,7 +184,8 @@ class LibvirtConnection(object): # everything has been vetted a bit def _wait_for_timer(): timer_done.wait() - self._cleanup(instance) + if cleanup: + self._cleanup(instance) done.send() greenthread.spawn(_wait_for_timer) -- cgit From 81191660cf6d1e5ea47630ed45041dc923f6b57a Mon Sep 17 00:00:00 2001 From: Vishvananda Ishaya Date: Wed, 22 Dec 2010 20:59:53 +0000 Subject: merge trunk and upgrade to cheetah templating --- nova/virt/connection.py | 2 +- nova/virt/fake.py | 16 ++- nova/virt/libvirt.qemu.xml.template | 34 ----- nova/virt/libvirt.rescue.qemu.xml.template | 38 ------ nova/virt/libvirt.rescue.qemu.xml.template.THIS | 38 ++++++ nova/virt/libvirt.rescue.uml.xml.template | 31 ----- nova/virt/libvirt.rescue.uml.xml.template.THIS | 31 +++++ nova/virt/libvirt.rescue.xen.xml.template | 34 ----- nova/virt/libvirt.uml.xml.template | 27 ---- nova/virt/libvirt.uml.xml.template.THIS | 27 ++++ nova/virt/libvirt.xen.xml.template | 30 ----- nova/virt/libvirt.xml.template | 79 +++++++++++ nova/virt/libvirt_conn.py | 168 +++++++++++++----------- nova/virt/xenapi/network_utils.py | 1 + nova/virt/xenapi/vm_utils.py | 7 +- nova/virt/xenapi/vmops.py | 55 ++++++-- nova/virt/xenapi/volumeops.py | 1 + nova/virt/xenapi_conn.py | 81 ++++++++---- 18 files changed, 380 insertions(+), 320 deletions(-) delete mode 100644 nova/virt/libvirt.qemu.xml.template delete mode 100644 nova/virt/libvirt.rescue.qemu.xml.template create mode 100644 nova/virt/libvirt.rescue.qemu.xml.template.THIS delete mode 100644 nova/virt/libvirt.rescue.uml.xml.template create mode 100644 nova/virt/libvirt.rescue.uml.xml.template.THIS delete mode 100644 nova/virt/libvirt.rescue.xen.xml.template delete mode 100644 nova/virt/libvirt.uml.xml.template create mode 100644 nova/virt/libvirt.uml.xml.template.THIS delete mode 100644 nova/virt/libvirt.xen.xml.template create mode 100644 nova/virt/libvirt.xml.template (limited to 'nova/virt') diff --git a/nova/virt/connection.py b/nova/virt/connection.py index c40bb4bb4..61e99944e 100644 --- a/nova/virt/connection.py +++ b/nova/virt/connection.py @@ -66,6 +66,6 @@ def get_connection(read_only=False): raise Exception('Unknown connection type "%s"' % t) if conn is None: - logging.error('Failed to open connection to the hypervisor') + logging.error(_('Failed to open connection to the hypervisor')) sys.exit(1) return conn diff --git a/nova/virt/fake.py b/nova/virt/fake.py index 76a04f18f..238acf798 100644 --- a/nova/virt/fake.py +++ b/nova/virt/fake.py @@ -136,6 +136,18 @@ class FakeConnection(object): """ pass + def pause(self, instance, callback): + """ + Pause the specified instance. + """ + pass + + def unpause(self, instance, callback): + """ + Unpause the specified instance. + """ + pass + def destroy(self, instance): """ Destroy (shutdown and delete) the specified instance. @@ -169,7 +181,8 @@ class FakeConnection(object): knowledge of the instance """ if instance_name not in self.instances: - raise exception.NotFound("Instance %s Not Found" % instance_name) + raise exception.NotFound(_("Instance %s Not Found") + % instance_name) i = self.instances[instance_name] return {'state': i._state, 'max_mem': 0, @@ -249,5 +262,6 @@ class FakeConnection(object): class FakeInstance(object): + def __init__(self): self._state = power_state.NOSTATE diff --git a/nova/virt/libvirt.qemu.xml.template b/nova/virt/libvirt.qemu.xml.template deleted file mode 100644 index d90afea81..000000000 --- a/nova/virt/libvirt.qemu.xml.template +++ /dev/null @@ -1,34 +0,0 @@ - - %(name)s - - hvm - %(basepath)s/kernel - %(basepath)s/ramdisk - root=/dev/vda1 console=ttyS0 - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - %(extra_params)s - - - - - - - - diff --git a/nova/virt/libvirt.rescue.qemu.xml.template b/nova/virt/libvirt.rescue.qemu.xml.template deleted file mode 100644 index a3b88106c..000000000 --- a/nova/virt/libvirt.rescue.qemu.xml.template +++ /dev/null @@ -1,38 +0,0 @@ - - %(name)s - - hvm - %(basepath)s/rescue-kernel - %(basepath)s/rescue-ramdisk - root=/dev/vda1 console=ttyS0 - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - - - - - %(extra_params)s - - - - - - - - diff --git a/nova/virt/libvirt.rescue.qemu.xml.template.THIS b/nova/virt/libvirt.rescue.qemu.xml.template.THIS new file mode 100644 index 000000000..a3b88106c --- /dev/null +++ b/nova/virt/libvirt.rescue.qemu.xml.template.THIS @@ -0,0 +1,38 @@ + + %(name)s + + hvm + %(basepath)s/rescue-kernel + %(basepath)s/rescue-ramdisk + root=/dev/vda1 console=ttyS0 + + + + + %(memory_kb)s + %(vcpus)s + + + + + + + + + + + + + + + + + %(extra_params)s + + + + + + + + diff --git a/nova/virt/libvirt.rescue.uml.xml.template b/nova/virt/libvirt.rescue.uml.xml.template deleted file mode 100644 index a254692d4..000000000 --- a/nova/virt/libvirt.rescue.uml.xml.template +++ /dev/null @@ -1,31 +0,0 @@ - - %(name)s - %(memory_kb)s - - %(type)s - /usr/bin/linux - /dev/ubda1 - - - - - - - - - - - - - - - - - %(extra_params)s - - - - - - - diff --git a/nova/virt/libvirt.rescue.uml.xml.template.THIS b/nova/virt/libvirt.rescue.uml.xml.template.THIS new file mode 100644 index 000000000..a254692d4 --- /dev/null +++ b/nova/virt/libvirt.rescue.uml.xml.template.THIS @@ -0,0 +1,31 @@ + + %(name)s + %(memory_kb)s + + %(type)s + /usr/bin/linux + /dev/ubda1 + + + + + + + + + + + + + + + + + %(extra_params)s + + + + + + + diff --git a/nova/virt/libvirt.rescue.xen.xml.template b/nova/virt/libvirt.rescue.xen.xml.template deleted file mode 100644 index 3b8d27237..000000000 --- a/nova/virt/libvirt.rescue.xen.xml.template +++ /dev/null @@ -1,34 +0,0 @@ - - %(name)s - - linux - %(basepath)s/kernel - %(basepath)s/ramdisk - /dev/xvda1 - ro - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.uml.xml.template b/nova/virt/libvirt.uml.xml.template deleted file mode 100644 index 506f2ef72..000000000 --- a/nova/virt/libvirt.uml.xml.template +++ /dev/null @@ -1,27 +0,0 @@ - - %(name)s - %(memory_kb)s - - %(type)s - /usr/bin/linux - /dev/ubda1 - - - - - - - - - - - - - %(extra_params)s - - - - - - - diff --git a/nova/virt/libvirt.uml.xml.template.THIS b/nova/virt/libvirt.uml.xml.template.THIS new file mode 100644 index 000000000..506f2ef72 --- /dev/null +++ b/nova/virt/libvirt.uml.xml.template.THIS @@ -0,0 +1,27 @@ + + %(name)s + %(memory_kb)s + + %(type)s + /usr/bin/linux + /dev/ubda1 + + + + + + + + + + + + + %(extra_params)s + + + + + + + diff --git a/nova/virt/libvirt.xen.xml.template b/nova/virt/libvirt.xen.xml.template deleted file mode 100644 index 9677902c6..000000000 --- a/nova/virt/libvirt.xen.xml.template +++ /dev/null @@ -1,30 +0,0 @@ - - %(name)s - - linux - %(basepath)s/kernel - %(basepath)s/ramdisk - /dev/xvda1 - ro - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - - - - diff --git a/nova/virt/libvirt.xml.template b/nova/virt/libvirt.xml.template new file mode 100644 index 000000000..3fb2243da --- /dev/null +++ b/nova/virt/libvirt.xml.template @@ -0,0 +1,79 @@ + + ${name} + ${memory_kb} + +#if $type == 'uml' + #set $disk_prefix = 'ubd' + #set $disk_bus = 'uml' + uml + /usr/bin/linux + /dev/ubda1 +#else + #if $type == 'xen' + #set $disk_prefix = 'sd' + #set $disk_bus = 'scsi' + linux + /dev/xvda1 + #else + #set $disk_prefix = 'vd' + #set $disk_bus = 'virtio' + hvm + #end if + #if $getVar('rescue', False) + ${basepath}/rescue-kernel + ${basepath}/rescue-ramdisk + #else + #if $getVar('kernel', None) + ${kernel} + #if $type == 'xen' + ro + #else + root=/dev/vda1 console=ttyS0 + #end if + #if $getVar('ramdisk', None) + ${ramdisk} + #end if + #else + + #end if + #end if +#end if + + + + + ${vcpus} + +#if $getVar('rescue', False) + + + + + + + + +#else + + + + +#end if + + + + + + + +#if $getVar('extra_params', False) + ${extra_params} +#end if + + + + + + + + diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py index 0d42ce2f8..16bcfe3c0 100644 --- a/nova/virt/libvirt_conn.py +++ b/nova/virt/libvirt_conn.py @@ -27,12 +27,7 @@ Supports KVM, QEMU, UML, and XEN. :libvirt_type: Libvirt domain type. Can be kvm, qemu, uml, xen (default: kvm). :libvirt_uri: Override for the default libvirt URI (depends on libvirt_type). -:libvirt_xml_template: Libvirt XML Template (QEmu/KVM). -:libvirt_xen_xml_template: Libvirt XML Template (Xen). -:libvirt_uml_xml_template: Libvirt XML Template (User Mode Linux). -:libvirt_rescue_xml_template: XML template for rescue mode (KVM & QEMU). -:libvirt_rescue_xen_xml_template: XML templage for rescue mode (XEN). -:libvirt_rescue_uml_xml_template: XML template for rescue mode (UML). +:libvirt_xml_template: Libvirt XML Template. :rescue_image_id: Rescue ami image (default: ami-rescue). :rescue_kernel_id: Rescue aki image (default: aki-rescue). :rescue_ramdisk_id: Rescue ari image (default: ari-rescue). @@ -62,36 +57,20 @@ from nova.compute import instance_types from nova.compute import power_state from nova.virt import images +from Cheetah.Template import Template + libvirt = None libxml2 = None FLAGS = flags.FLAGS -flags.DEFINE_string('libvirt_rescue_xml_template', - utils.abspath('virt/libvirt.rescue.qemu.xml.template'), - 'Libvirt RESCUE XML Template for QEmu/KVM') -flags.DEFINE_string('libvirt_rescue_xen_xml_template', - utils.abspath('virt/libvirt.rescue.xen.xml.template'), - 'Libvirt RESCUE XML Template for xen') -flags.DEFINE_string('libvirt_rescue_uml_xml_template', - utils.abspath('virt/libvirt.rescue.uml.xml.template'), - 'Libvirt RESCUE XML Template for user-mode-linux') # TODO(vish): These flags should probably go into a shared location flags.DEFINE_string('rescue_image_id', 'ami-rescue', 'Rescue ami image') flags.DEFINE_string('rescue_kernel_id', 'aki-rescue', 'Rescue aki image') flags.DEFINE_string('rescue_ramdisk_id', 'ari-rescue', 'Rescue ari image') flags.DEFINE_string('libvirt_xml_template', - utils.abspath('virt/libvirt.qemu.xml.template'), - 'Libvirt XML Template for QEmu/KVM') -flags.DEFINE_string('libvirt_xen_xml_template', - utils.abspath('virt/libvirt.xen.xml.template'), - 'Libvirt XML Template for Xen') -flags.DEFINE_string('libvirt_uml_xml_template', - utils.abspath('virt/libvirt.uml.xml.template'), - 'Libvirt XML Template for user-mode-linux') -flags.DEFINE_string('injected_network_template', - utils.abspath('virt/interfaces.template'), - 'Template file for injected network') + utils.abspath('virt/libvirt.xml.template'), + 'Libvirt XML Template') flags.DEFINE_string('libvirt_type', 'kvm', 'Libvirt domain type (valid options are: ' @@ -123,13 +102,11 @@ def _get_net_and_mask(cidr): class LibvirtConnection(object): + def __init__(self, read_only): - (self.libvirt_uri, - template_file, - rescue_file) = self.get_uri_and_templates() + self.libvirt_uri = self.get_uri() - self.libvirt_xml = open(template_file).read() - self.rescue_xml = open(rescue_file).read() + self.libvirt_xml = open(FLAGS.libvirt_xml_template).read() self._wrapped_conn = None self.read_only = read_only @@ -139,7 +116,7 @@ class LibvirtConnection(object): @property def _conn(self): if not self._wrapped_conn or not self._test_connection(): - logging.debug('Connecting to libvirt: %s' % self.libvirt_uri) + logging.debug(_('Connecting to libvirt: %s') % self.libvirt_uri) self._wrapped_conn = self._connect(self.libvirt_uri, self.read_only) return self._wrapped_conn @@ -151,24 +128,18 @@ class LibvirtConnection(object): except libvirt.libvirtError as e: if e.get_error_code() == libvirt.VIR_ERR_SYSTEM_ERROR and \ e.get_error_domain() == libvirt.VIR_FROM_REMOTE: - logging.debug('Connection to libvirt broke') + logging.debug(_('Connection to libvirt broke')) return False raise - def get_uri_and_templates(self): + def get_uri(self): if FLAGS.libvirt_type == 'uml': uri = FLAGS.libvirt_uri or 'uml:///system' - template_file = FLAGS.libvirt_uml_xml_template - rescue_file = FLAGS.libvirt_rescue_uml_xml_template elif FLAGS.libvirt_type == 'xen': uri = FLAGS.libvirt_uri or 'xen:///' - template_file = FLAGS.libvirt_xen_xml_template - rescue_file = FLAGS.libvirt_rescue_xen_xml_template else: uri = FLAGS.libvirt_uri or 'qemu:///system' - template_file = FLAGS.libvirt_xml_template - rescue_file = FLAGS.libvirt_rescue_xml_template - return uri, template_file, rescue_file + return uri def _connect(self, uri, read_only): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_NOECHOPROMPT], @@ -228,7 +199,7 @@ class LibvirtConnection(object): def _cleanup(self, instance): target = os.path.join(FLAGS.instances_path, instance['name']) - logging.info('instance %s: deleting instance files %s', + logging.info(_('instance %s: deleting instance files %s'), instance['name'], target) if os.path.exists(target): shutil.rmtree(target) @@ -270,7 +241,7 @@ class LibvirtConnection(object): mount_device = mountpoint.rpartition("/")[2] xml = self._get_disk_xml(virt_dom.XMLDesc(0), mount_device) if not xml: - raise exception.NotFound("No disk at %s" % mount_device) + raise exception.NotFound(_("No disk at %s") % mount_device) virt_dom.detachDevice(xml) @exception.wrap_exception @@ -286,10 +257,10 @@ class LibvirtConnection(object): db.instance_set_state(context.get_admin_context(), instance['id'], state) if state == power_state.RUNNING: - logging.debug('instance %s: rebooted', instance['name']) + logging.debug(_('instance %s: rebooted'), instance['name']) timer.stop() except Exception, exn: - logging.error('_wait_for_reboot failed: %s', exn) + logging.error(_('_wait_for_reboot failed: %s'), exn) db.instance_set_state(context.get_admin_context(), instance['id'], power_state.SHUTDOWN) @@ -298,6 +269,14 @@ class LibvirtConnection(object): timer.f = _wait_for_reboot return timer.start(interval=0.5, now=True) + @exception.wrap_exception + def pause(self, instance, callback): + raise exception.APIError("pause not supported for libvirt.") + + @exception.wrap_exception + def unpause(self, instance, callback): + raise exception.APIError("unpause not supported for libvirt.") + @exception.wrap_exception def rescue(self, instance): self.destroy(instance, False) @@ -316,10 +295,10 @@ class LibvirtConnection(object): state = self.get_info(instance['name'])['state'] db.instance_set_state(None, instance['id'], state) if state == power_state.RUNNING: - logging.debug('instance %s: rescued', instance['name']) + logging.debug(_('instance %s: rescued'), instance['name']) timer.stop() except Exception, exn: - logging.error('_wait_for_rescue failed: %s', exn) + logging.error(_('_wait_for_rescue failed: %s'), exn) db.instance_set_state(None, instance['id'], power_state.SHUTDOWN) @@ -344,7 +323,7 @@ class LibvirtConnection(object): NWFilterFirewall(self._conn).setup_nwfilters_for_instance(instance) self._create_image(instance, xml) self._conn.createXML(xml, 0) - logging.debug("instance %s: is running", instance['name']) + logging.debug(_("instance %s: is running"), instance['name']) timer = utils.LoopingCall(f=None) @@ -354,10 +333,10 @@ class LibvirtConnection(object): db.instance_set_state(context.get_admin_context(), instance['id'], state) if state == power_state.RUNNING: - logging.debug('instance %s: booted', instance['name']) + logging.debug(_('instance %s: booted'), instance['name']) timer.stop() except: - logging.exception('instance %s: failed to boot', + logging.exception(_('instance %s: failed to boot'), instance['name']) db.instance_set_state(context.get_admin_context(), instance['id'], @@ -372,7 +351,7 @@ class LibvirtConnection(object): virsh_output = virsh_output[0].strip() if virsh_output.startswith('/dev/'): - logging.info('cool, it\'s a device') + logging.info(_('cool, it\'s a device')) out, err = utils.execute("sudo dd if=%s iflag=nonblock" % virsh_output, check_exit_code=False) return out @@ -380,7 +359,7 @@ class LibvirtConnection(object): return '' def _append_to_file(self, data, fpath): - logging.info('data: %r, fpath: %r' % (data, fpath)) + logging.info(_('data: %r, fpath: %r') % (data, fpath)) fp = open(fpath, 'a+') fp.write(data) return fpath @@ -422,7 +401,7 @@ class LibvirtConnection(object): # TODO(termie): these are blocking calls, it would be great # if they weren't. - logging.info('instance %s: Creating image', inst['name']) + logging.info(_('instance %s: Creating image'), inst['name']) f = open(basepath('libvirt.xml'), 'w') f.write(libvirt_xml) f.close() @@ -441,18 +420,28 @@ class LibvirtConnection(object): if not os.path.exists(basepath('disk')): images.fetch(inst.image_id, basepath('disk-raw'), user, project) - if not os.path.exists(basepath('kernel')): - images.fetch(inst.kernel_id, basepath('kernel'), user, - project) - if not os.path.exists(basepath('ramdisk')): - images.fetch(inst.ramdisk_id, basepath('ramdisk'), user, - project) + + if inst['kernel_id']: + if not os.path.exists(basepath('kernel')): + images.fetch(inst['kernel_id'], basepath('kernel'), + user, project) + if inst['ramdisk_id']: + if not os.path.exists(basepath('ramdisk')): + images.fetch(inst['ramdisk_id'], basepath('ramdisk'), + user, project) def execute(cmd, process_input=None, check_exit_code=True): return utils.execute(cmd=cmd, process_input=process_input, check_exit_code=check_exit_code) + # For now, we assume that if we're not using a kernel, we're using a + # partitioned disk image where the target partition is the first + # partition + target_partition = None + if not inst['kernel_id']: + target_partition = "1" + key = str(inst['key_data']) net = None network_ref = db.network_get_by_instance(context.get_admin_context(), @@ -468,16 +457,24 @@ class LibvirtConnection(object): 'dns': network_ref['dns']} if key or net: if key: - logging.info('instance %s: injecting key into image %s', + logging.info(_('instance %s: injecting key into image %s'), inst['name'], inst.image_id) if net: - logging.info('instance %s: injecting net into image %s', - inst['name'], inst.image_id) - disk.inject_data(basepath('disk-raw'), key, net, - execute=execute) - - if os.path.exists(basepath('disk')): - utils.execute('rm -f %s' % basepath('disk')) + logging.info(_('instance %s: injecting net into image %s'), + inst['name'], inst.image_id) + try: + disk.inject_data(basepath('disk-raw'), key, net, + partition=target_partition, + execute=execute) + except Exception as e: + # This could be a windows image, or a vmdk format disk + logging.warn(_('instance %s: ignoring error injecting data' + ' into image %s (%s)'), + inst['name'], inst.image_id, e) + + if inst['kernel_id']: + if os.path.exists(basepath('disk')): + utils.execute('rm -f %s' % basepath('disk')) local_bytes = (instance_types.INSTANCE_TYPES[inst.instance_type] ['local_gb'] @@ -486,15 +483,21 @@ class LibvirtConnection(object): resize = True if inst['instance_type'] == 'm1.tiny' or prefix == 'rescue-': resize = False - disk.partition(basepath('disk-raw'), basepath('disk'), - local_bytes, resize, execute=execute) + + if inst['kernel_id']: + disk.partition(basepath('disk-raw'), basepath('disk'), + local_bytes, resize, execute=execute) + else: + os.rename(basepath('disk-raw'), basepath('disk')) + disk.extend(basepath('disk'), local_bytes, execute=execute) if FLAGS.libvirt_type == 'uml': utils.execute('sudo chown root %s' % basepath('disk')) def to_xml(self, instance, rescue=False): # TODO(termie): cache? - logging.debug('instance %s: starting toXML method', instance['name']) + logging.debug(_('instance %s: starting toXML method'), + instance['name']) network = db.project_get_network(context.get_admin_context(), instance['project_id']) # FIXME(vish): stick this in db @@ -523,20 +526,29 @@ class LibvirtConnection(object): 'mac_address': instance['mac_address'], 'ip_address': ip_address, 'dhcp_server': dhcp_server, - 'extra_params': extra_params} - if rescue: - libvirt_xml = self.rescue_xml % xml_info - else: - libvirt_xml = self.libvirt_xml % xml_info - logging.debug('instance %s: finished toXML method', instance['name']) + 'extra_params': extra_params, + 'rescue': rescue} + if not rescue: + if instance['kernel_id']: + xml_info['kernel'] = xml_info['basepath'] + "/kernel" + + if instance['ramdisk_id']: + xml_info['ramdisk'] = xml_info['basepath'] + "/ramdisk" + + xml_info['disk'] = xml_info['basepath'] + "/disk" - return libvirt_xml + xml = str(Template(self.libvirt_xml, searchList=[xml_info])) + logging.debug(_('instance %s: finished toXML method'), + instance['name']) + + return xml def get_info(self, instance_name): try: virt_dom = self._conn.lookupByName(instance_name) except: - raise exception.NotFound("Instance %s not found" % instance_name) + raise exception.NotFound(_("Instance %s not found") + % instance_name) (state, max_mem, mem, num_cpu, cpu_time) = virt_dom.info() return {'state': state, 'max_mem': max_mem, diff --git a/nova/virt/xenapi/network_utils.py b/nova/virt/xenapi/network_utils.py index 012954394..ce2c68ce0 100644 --- a/nova/virt/xenapi/network_utils.py +++ b/nova/virt/xenapi/network_utils.py @@ -25,6 +25,7 @@ class NetworkHelper(): """ The class that wraps the helper methods together. """ + def __init__(self): return diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 2f5d78e75..badaaedc1 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -47,6 +47,7 @@ class VMHelper(): """ The class that wraps the helper methods together. """ + def __init__(self): return @@ -228,11 +229,7 @@ class VMHelper(): try: host = session.get_xenapi_host() host_ip = session.get_xenapi().host.get_record(host)["address"] - metrics = session.get_xenapi().VM_guest_metrics.get_record( - record["guest_metrics"]) - diags = { - "Kernel": metrics["os_version"]["uname"], - "Distro": metrics["os_version"]["name"]} + diags = {} xml = get_rrd(host_ip, record["uuid"]) if xml: rrd = minidom.parseString(xml) diff --git a/nova/virt/xenapi/vmops.py b/nova/virt/xenapi/vmops.py index 3034df9e1..3b00ce8bf 100644 --- a/nova/virt/xenapi/vmops.py +++ b/nova/virt/xenapi/vmops.py @@ -34,6 +34,7 @@ class VMOps(object): """ Management class for VM-related tasks """ + def __init__(self, session): global XenAPI if XenAPI is None: @@ -43,12 +44,16 @@ class VMOps(object): VMHelper.late_import() def list_instances(self): - """ List VM instances """ - return [self._session.get_xenapi().VM.get_name_label(vm) \ - for vm in self._session.get_xenapi().VM.get_all()] + """List VM instances""" + vms = [] + for vm in self._session.get_xenapi().VM.get_all(): + rec = self._session.get_xenapi().VM.get_record(vm) + if not rec["is_a_template"] and not rec["is_control_domain"]: + vms.append(rec["name_label"]) + return vms def spawn(self, instance): - """ Create VM instance """ + """Create VM instance""" vm = VMHelper.lookup(self._session, instance.name) if vm is not None: raise Exception('Attempted to create non-unique name %s' % @@ -80,16 +85,16 @@ class VMOps(object): vm_ref) def reboot(self, instance): - """ Reboot VM instance """ + """Reboot VM instance""" instance_name = instance.name vm = VMHelper.lookup(self._session, instance_name) if vm is None: raise Exception('instance not present %s' % instance_name) task = self._session.call_xenapi('Async.VM.clean_reboot', vm) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) def destroy(self, instance): - """ Destroy VM instance """ + """Destroy VM instance""" vm = VMHelper.lookup(self._session, instance.name) if vm is None: # Don't complain, just return. This lets us clean up instances @@ -100,7 +105,7 @@ class VMOps(object): try: task = self._session.call_xenapi('Async.VM.hard_shutdown', vm) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) except XenAPI.Failure, exc: logging.warn(exc) # Disk clean-up @@ -108,17 +113,43 @@ class VMOps(object): for vdi in vdis: try: task = self._session.call_xenapi('Async.VDI.destroy', vdi) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) except XenAPI.Failure, exc: logging.warn(exc) try: task = self._session.call_xenapi('Async.VM.destroy', vm) - self._session.wait_for_task(task) + self._session.wait_for_task(instance.id, task) + except XenAPI.Failure, exc: + logging.warn(exc) + + def _wait_with_callback(self, instance_id, task, callback): + ret = None + try: + ret = self._session.wait_for_task(instance_id, task) except XenAPI.Failure, exc: logging.warn(exc) + callback(ret) + + def pause(self, instance, callback): + """Pause VM instance""" + instance_name = instance.name + vm = VMHelper.lookup(self._session, instance_name) + if vm is None: + raise Exception('instance not present %s' % instance_name) + task = self._session.call_xenapi('Async.VM.pause', vm) + self._wait_with_callback(instance.id, task, callback) + + def unpause(self, instance, callback): + """Unpause VM instance""" + instance_name = instance.name + vm = VMHelper.lookup(self._session, instance_name) + if vm is None: + raise Exception('instance not present %s' % instance_name) + task = self._session.call_xenapi('Async.VM.unpause', vm) + self._wait_with_callback(instance.id, task, callback) def get_info(self, instance_id): - """ Return data about VM instance """ + """Return data about VM instance""" vm = VMHelper.lookup_blocking(self._session, instance_id) if vm is None: raise Exception('instance not present %s' % instance_id) @@ -134,6 +165,6 @@ class VMOps(object): return VMHelper.compile_diagnostics(self._session, rec) def get_console_output(self, instance): - """ Return snapshot of console """ + """Return snapshot of console""" # TODO: implement this to fix pylint! return 'FAKE CONSOLE OUTPUT of instance' diff --git a/nova/virt/xenapi/volumeops.py b/nova/virt/xenapi/volumeops.py index a4c7a3861..1943ccab0 100644 --- a/nova/virt/xenapi/volumeops.py +++ b/nova/virt/xenapi/volumeops.py @@ -20,6 +20,7 @@ Management class for Storage-related functions (attach, detach, etc). class VolumeOps(object): + def __init__(self, session): self._session = session diff --git a/nova/virt/xenapi_conn.py b/nova/virt/xenapi_conn.py index 6beb08f5e..146e2f153 100644 --- a/nova/virt/xenapi_conn.py +++ b/nova/virt/xenapi_conn.py @@ -54,6 +54,8 @@ import xmlrpclib from eventlet import event from eventlet import tpool +from nova import context +from nova import db from nova import utils from nova import flags from nova.virt.xenapi.vmops import VMOps @@ -93,38 +95,47 @@ def get_connection(_): username = FLAGS.xenapi_connection_username password = FLAGS.xenapi_connection_password if not url or password is None: - raise Exception('Must specify xenapi_connection_url, ' - 'xenapi_connection_username (optionally), and ' - 'xenapi_connection_password to use ' - 'connection_type=xenapi') + raise Exception(_('Must specify xenapi_connection_url, ' + 'xenapi_connection_username (optionally), and ' + 'xenapi_connection_password to use ' + 'connection_type=xenapi')) return XenAPIConnection(url, username, password) class XenAPIConnection(object): - """ A connection to XenServer or Xen Cloud Platform """ + """A connection to XenServer or Xen Cloud Platform""" + def __init__(self, url, user, pw): session = XenAPISession(url, user, pw) self._vmops = VMOps(session) self._volumeops = VolumeOps(session) def list_instances(self): - """ List VM instances """ + """List VM instances""" return self._vmops.list_instances() def spawn(self, instance): - """ Create VM instance """ + """Create VM instance""" self._vmops.spawn(instance) def reboot(self, instance): - """ Reboot VM instance """ + """Reboot VM instance""" self._vmops.reboot(instance) def destroy(self, instance): - """ Destroy VM instance """ + """Destroy VM instance""" self._vmops.destroy(instance) + def pause(self, instance, callback): + """Pause VM instance""" + self._vmops.pause(instance, callback) + + def unpause(self, instance, callback): + """Unpause paused VM instance""" + self._vmops.unpause(instance, callback) + def get_info(self, instance_id): - """ Return data about VM instance """ + """Return data about VM instance""" return self._vmops.get_info(instance_id) def get_diagnostics(self, instance_id): @@ -132,32 +143,33 @@ class XenAPIConnection(object): return self._vmops.get_diagnostics(instance_id) def get_console_output(self, instance): - """ Return snapshot of console """ + """Return snapshot of console""" return self._vmops.get_console_output(instance) def attach_volume(self, instance_name, device_path, mountpoint): - """ Attach volume storage to VM instance """ + """Attach volume storage to VM instance""" return self._volumeops.attach_volume(instance_name, device_path, mountpoint) def detach_volume(self, instance_name, mountpoint): - """ Detach volume storage to VM instance """ + """Detach volume storage to VM instance""" return self._volumeops.detach_volume(instance_name, mountpoint) class XenAPISession(object): - """ The session to invoke XenAPI SDK calls """ + """The session to invoke XenAPI SDK calls""" + def __init__(self, url, user, pw): self._session = XenAPI.Session(url) self._session.login_with_password(user, pw) def get_xenapi(self): - """ Return the xenapi object """ + """Return the xenapi object""" return self._session.xenapi def get_xenapi_host(self): - """ Return the xenapi host """ + """Return the xenapi host""" return self._session.xenapi.session.get_this_host(self._session.handle) def call_xenapi(self, method, *args): @@ -173,46 +185,57 @@ class XenAPISession(object): self._session.xenapi.Async.host.call_plugin, self.get_xenapi_host(), plugin, fn, args) - def wait_for_task(self, task): + def wait_for_task(self, instance_id, task): """Return a Deferred that will give the result of the given task. The task is polled until it completes.""" done = event.Event() - loop = utils.LoopingCall(self._poll_task, task, done) + loop = utils.LoopingCall(self._poll_task, instance_id, task, done) loop.start(FLAGS.xenapi_task_poll_interval, now=True) rv = done.wait() loop.stop() return rv - def _poll_task(self, task, done): + def _poll_task(self, instance_id, task, done): """Poll the given XenAPI task, and fire the given Deferred if we get a result.""" try: - #logging.debug('Polling task %s...', task) + name = self._session.xenapi.task.get_name_label(task) status = self._session.xenapi.task.get_status(task) - if status == 'pending': + action = dict( + instance_id=int(instance_id), + action=name, + error=None) + if status == "pending": return - elif status == 'success': + elif status == "success": result = self._session.xenapi.task.get_result(task) - logging.info('Task %s status: success. %s', task, result) + logging.info(_("Task [%s] %s status: success %s") % ( + name, + task, + result)) done.send(_parse_xmlrpc_value(result)) else: error_info = self._session.xenapi.task.get_error_info(task) - logging.warn('Task %s status: %s. %s', task, status, - error_info) + action["error"] = str(error_info) + logging.warn(_("Task [%s] %s status: %s %s") % ( + name, + task, + status, + error_info)) done.send_exception(XenAPI.Failure(error_info)) - #logging.debug('Polling task %s done.', task) + db.instance_action_create(context.get_admin_context(), action) except XenAPI.Failure, exc: logging.warn(exc) done.send_exception(*sys.exc_info()) def _unwrap_plugin_exceptions(func, *args, **kwargs): - """ Parse exception details """ + """Parse exception details""" try: return func(*args, **kwargs) except XenAPI.Failure, exc: - logging.debug("Got exception: %s", exc) + logging.debug(_("Got exception: %s"), exc) if (len(exc.details) == 4 and exc.details[0] == 'XENAPI_PLUGIN_EXCEPTION' and exc.details[2] == 'Failure'): @@ -225,7 +248,7 @@ def _unwrap_plugin_exceptions(func, *args, **kwargs): else: raise except xmlrpclib.ProtocolError, exc: - logging.debug("Got exception: %s", exc) + logging.debug(_("Got exception: %s"), exc) raise -- cgit From 1509d51c7e9be04f8ca7aa9fb50d7b06b20a4e71 Mon Sep 17 00:00:00 2001 From: Vishvananda Ishaya Date: Wed, 22 Dec 2010 21:41:40 +0000 Subject: remove extra files that slipped in --- nova/virt/libvirt.uml.xml.template.THIS | 27 --------------------------- 1 file changed, 27 deletions(-) delete mode 100644 nova/virt/libvirt.uml.xml.template.THIS (limited to 'nova/virt') diff --git a/nova/virt/libvirt.uml.xml.template.THIS b/nova/virt/libvirt.uml.xml.template.THIS deleted file mode 100644 index 506f2ef72..000000000 --- a/nova/virt/libvirt.uml.xml.template.THIS +++ /dev/null @@ -1,27 +0,0 @@ - - %(name)s - %(memory_kb)s - - %(type)s - /usr/bin/linux - /dev/ubda1 - - - - - - - - - - - - - %(extra_params)s - - - - - - - -- cgit From a7e5a4a39b93b32974ca82b77391368c4f01cdd8 Mon Sep 17 00:00:00 2001 From: Vishvananda Ishaya Date: Wed, 22 Dec 2010 22:54:43 +0000 Subject: removed extra files --- nova/virt/libvirt.rescue.qemu.xml.template.THIS | 38 ------------------------- nova/virt/libvirt.rescue.uml.xml.template.THIS | 31 -------------------- 2 files changed, 69 deletions(-) delete mode 100644 nova/virt/libvirt.rescue.qemu.xml.template.THIS delete mode 100644 nova/virt/libvirt.rescue.uml.xml.template.THIS (limited to 'nova/virt') diff --git a/nova/virt/libvirt.rescue.qemu.xml.template.THIS b/nova/virt/libvirt.rescue.qemu.xml.template.THIS deleted file mode 100644 index a3b88106c..000000000 --- a/nova/virt/libvirt.rescue.qemu.xml.template.THIS +++ /dev/null @@ -1,38 +0,0 @@ - - %(name)s - - hvm - %(basepath)s/rescue-kernel - %(basepath)s/rescue-ramdisk - root=/dev/vda1 console=ttyS0 - - - - - %(memory_kb)s - %(vcpus)s - - - - - - - - - - - - - - - - - %(extra_params)s - - - - - - - - diff --git a/nova/virt/libvirt.rescue.uml.xml.template.THIS b/nova/virt/libvirt.rescue.uml.xml.template.THIS deleted file mode 100644 index a254692d4..000000000 --- a/nova/virt/libvirt.rescue.uml.xml.template.THIS +++ /dev/null @@ -1,31 +0,0 @@ - - %(name)s - %(memory_kb)s - - %(type)s - /usr/bin/linux - /dev/ubda1 - - - - - - - - - - - - - - - - - %(extra_params)s - - - - - - - -- cgit