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authorBrian Waldon <brian.waldon@rackspace.com>2011-08-02 18:37:49 +0000
committerTarmac <>2011-08-02 18:37:49 +0000
commitcf7eefab9e7891d449b115c0c50c4b76ae45743f (patch)
tree3fd97a06fda3cadd50b1a3595836a8ba5d29394d /nova
parentd6175dddfe481a9d3cd4e9d8c8570911fa785a7d (diff)
parent07646e85841a4f7c81e80254ac63715bece2aadd (diff)
- Remove Twisted dependency from pip-requires
- Remove Twisted patch from tools/install_venv.py - Remove eventlet patch from tools/install_venv.py - Remove tools/eventlet-patch - Remove nova/twistd.py - Remove nova/tests/test_twistd.py - Remove bin/nova-instancemonitor - Remove nova/compute/monitor.py - Add xattr to pip-requires until glance setup.py installs it correctly - Remove references to removed files from docs/translations/code
Diffstat (limited to 'nova')
-rw-r--r--nova/compute/monitor.py435
-rw-r--r--nova/tests/test_twistd.py53
-rw-r--r--nova/twistd.py267
-rw-r--r--nova/virt/fake.py12
-rw-r--r--nova/virt/libvirt/connection.py12
5 files changed, 8 insertions, 771 deletions
diff --git a/nova/compute/monitor.py b/nova/compute/monitor.py
deleted file mode 100644
index 9d8e2a25d..000000000
--- a/nova/compute/monitor.py
+++ /dev/null
@@ -1,435 +0,0 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
-# Copyright 2010 United States Government as represented by the
-# Administrator of the National Aeronautics and Space Administration.
-# All Rights Reserved.
-#
-# 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.
-
-"""
-Instance Monitoring:
-
- Optionally may be run on each compute node. Provides RRD
- based statistics and graphs and makes them internally available
- in the object store.
-"""
-
-import datetime
-import os
-import time
-
-import boto
-import boto.s3
-import rrdtool
-from twisted.internet import task
-from twisted.application import service
-
-from nova import flags
-from nova import log as logging
-from nova import utils
-from nova.virt import connection as virt_connection
-
-
-FLAGS = flags.FLAGS
-flags.DEFINE_integer('monitoring_instances_delay', 5,
- 'Sleep time between updates')
-flags.DEFINE_integer('monitoring_instances_step', 300,
- 'Interval of RRD updates')
-flags.DEFINE_string('monitoring_rrd_path', '$state_path/monitor/instances',
- 'Location of RRD files')
-
-
-RRD_VALUES = {
- 'cpu': [
- 'DS:cpu:GAUGE:600:0:100',
- 'RRA:AVERAGE:0.5:1:800',
- 'RRA:AVERAGE:0.5:6:800',
- 'RRA:AVERAGE:0.5:24:800',
- 'RRA:AVERAGE:0.5:288:800',
- 'RRA:MAX:0.5:1:800',
- 'RRA:MAX:0.5:6:800',
- 'RRA:MAX:0.5:24:800',
- 'RRA:MAX:0.5:288:800',
- ],
- 'net': [
- 'DS:rx:COUNTER:600:0:1250000',
- 'DS:tx:COUNTER:600:0:1250000',
- 'RRA:AVERAGE:0.5:1:800',
- 'RRA:AVERAGE:0.5:6:800',
- 'RRA:AVERAGE:0.5:24:800',
- 'RRA:AVERAGE:0.5:288:800',
- 'RRA:MAX:0.5:1:800',
- 'RRA:MAX:0.5:6:800',
- 'RRA:MAX:0.5:24:800',
- 'RRA:MAX:0.5:288:800',
- ],
- 'disk': [
- 'DS:rd:COUNTER:600:U:U',
- 'DS:wr:COUNTER:600:U:U',
- 'RRA:AVERAGE:0.5:1:800',
- 'RRA:AVERAGE:0.5:6:800',
- 'RRA:AVERAGE:0.5:24:800',
- 'RRA:AVERAGE:0.5:288:800',
- 'RRA:MAX:0.5:1:800',
- 'RRA:MAX:0.5:6:800',
- 'RRA:MAX:0.5:24:800',
- 'RRA:MAX:0.5:444:800',
- ]}
-
-
-utcnow = utils.utcnow
-
-
-LOG = logging.getLogger('nova.compute.monitor')
-
-
-def update_rrd(instance, name, data):
- """
- Updates the specified RRD file.
- """
- filename = os.path.join(instance.get_rrd_path(), '%s.rrd' % name)
-
- if not os.path.exists(filename):
- init_rrd(instance, name)
-
- timestamp = int(time.mktime(utcnow().timetuple()))
- rrdtool.update(filename, '%d:%s' % (timestamp, data))
-
-
-def init_rrd(instance, name):
- """
- Initializes the specified RRD file.
- """
- path = os.path.join(FLAGS.monitoring_rrd_path, instance.instance_id)
-
- if not os.path.exists(path):
- os.makedirs(path)
-
- filename = os.path.join(path, '%s.rrd' % name)
-
- if not os.path.exists(filename):
- rrdtool.create(
- filename,
- '--step', '%d' % FLAGS.monitoring_instances_step,
- '--start', '0',
- *RRD_VALUES[name])
-
-
-def graph_cpu(instance, duration):
- """
- Creates a graph of cpu usage for the specified instance and duration.
- """
- path = instance.get_rrd_path()
- filename = os.path.join(path, 'cpu-%s.png' % duration)
-
- rrdtool.graph(
- filename,
- '--disable-rrdtool-tag',
- '--imgformat', 'PNG',
- '--width', '400',
- '--height', '120',
- '--start', 'now-%s' % duration,
- '--vertical-label', '% cpu used',
- '-l', '0',
- '-u', '100',
- 'DEF:cpu=%s:cpu:AVERAGE' % os.path.join(path, 'cpu.rrd'),
- 'AREA:cpu#eacc00:% CPU',)
-
- store_graph(instance.instance_id, filename)
-
-
-def graph_net(instance, duration):
- """
- Creates a graph of network usage for the specified instance and duration.
- """
- path = instance.get_rrd_path()
- filename = os.path.join(path, 'net-%s.png' % duration)
-
- rrdtool.graph(
- filename,
- '--disable-rrdtool-tag',
- '--imgformat', 'PNG',
- '--width', '400',
- '--height', '120',
- '--start', 'now-%s' % duration,
- '--vertical-label', 'bytes/s',
- '--logarithmic',
- '--units', 'si',
- '--lower-limit', '1000',
- '--rigid',
- 'DEF:rx=%s:rx:AVERAGE' % os.path.join(path, 'net.rrd'),
- 'DEF:tx=%s:tx:AVERAGE' % os.path.join(path, 'net.rrd'),
- 'AREA:rx#00FF00:In traffic',
- 'LINE1:tx#0000FF:Out traffic',)
-
- store_graph(instance.instance_id, filename)
-
-
-def graph_disk(instance, duration):
- """
- Creates a graph of disk usage for the specified duration.
- """
- path = instance.get_rrd_path()
- filename = os.path.join(path, 'disk-%s.png' % duration)
-
- rrdtool.graph(
- filename,
- '--disable-rrdtool-tag',
- '--imgformat', 'PNG',
- '--width', '400',
- '--height', '120',
- '--start', 'now-%s' % duration,
- '--vertical-label', 'bytes/s',
- '--logarithmic',
- '--units', 'si',
- '--lower-limit', '1000',
- '--rigid',
- 'DEF:rd=%s:rd:AVERAGE' % os.path.join(path, 'disk.rrd'),
- 'DEF:wr=%s:wr:AVERAGE' % os.path.join(path, 'disk.rrd'),
- 'AREA:rd#00FF00:Read',
- 'LINE1:wr#0000FF:Write',)
-
- store_graph(instance.instance_id, filename)
-
-
-def store_graph(instance_id, filename):
- """
- Transmits the specified graph file to internal object store on cloud
- controller.
- """
- # TODO(devcamcar): Need to use an asynchronous method to make this
- # connection. If boto has some separate method that generates
- # the request it would like to make and another method to parse
- # the response we can make our own client that does the actual
- # request and hands it off to the response parser.
- s3 = boto.s3.connection.S3Connection(
- aws_access_key_id=FLAGS.aws_access_key_id,
- aws_secret_access_key=FLAGS.aws_secret_access_key,
- is_secure=False,
- calling_format=boto.s3.connection.OrdinaryCallingFormat(),
- port=FLAGS.s3_port,
- host=FLAGS.s3_host)
- bucket_name = '_%s.monitor' % instance_id
-
- # Object store isn't creating the bucket like it should currently
- # when it is first requested, so have to catch and create manually.
- try:
- bucket = s3.get_bucket(bucket_name)
- except Exception:
- bucket = s3.create_bucket(bucket_name)
-
- key = boto.s3.Key(bucket)
- key.key = os.path.basename(filename)
- key.set_contents_from_filename(filename)
-
-
-class Instance(object):
- def __init__(self, conn, instance_id):
- self.conn = conn
- self.instance_id = instance_id
- self.last_updated = datetime.datetime.min
- self.cputime = 0
- self.cputime_last_updated = None
-
- init_rrd(self, 'cpu')
- init_rrd(self, 'net')
- init_rrd(self, 'disk')
-
- def needs_update(self):
- """
- Indicates whether this instance is due to have its statistics updated.
- """
- delta = utcnow() - self.last_updated
- return delta.seconds >= FLAGS.monitoring_instances_step
-
- def update(self):
- """
- Updates the instances statistics and stores the resulting graphs
- in the internal object store on the cloud controller.
- """
- LOG.debug(_('updating %s...'), self.instance_id)
-
- try:
- data = self.fetch_cpu_stats()
- if data is not None:
- LOG.debug('CPU: %s', data)
- update_rrd(self, 'cpu', data)
-
- data = self.fetch_net_stats()
- LOG.debug('NET: %s', data)
- update_rrd(self, 'net', data)
-
- data = self.fetch_disk_stats()
- LOG.debug('DISK: %s', data)
- update_rrd(self, 'disk', data)
-
- # TODO(devcamcar): Turn these into pool.ProcessPool.execute() calls
- # and make the methods @defer.inlineCallbacks.
- graph_cpu(self, '1d')
- graph_cpu(self, '1w')
- graph_cpu(self, '1m')
-
- graph_net(self, '1d')
- graph_net(self, '1w')
- graph_net(self, '1m')
-
- graph_disk(self, '1d')
- graph_disk(self, '1w')
- graph_disk(self, '1m')
- except Exception:
- LOG.exception(_('unexpected error during update'))
-
- self.last_updated = utcnow()
-
- def get_rrd_path(self):
- """
- Returns the path to where RRD files are stored.
- """
- return os.path.join(FLAGS.monitoring_rrd_path, self.instance_id)
-
- def fetch_cpu_stats(self):
- """
- Returns cpu usage statistics for this instance.
- """
- info = self.conn.get_info(self.instance_id)
-
- # Get the previous values.
- cputime_last = self.cputime
- cputime_last_updated = self.cputime_last_updated
-
- # Get the raw CPU time used in nanoseconds.
- self.cputime = float(info['cpu_time'])
- self.cputime_last_updated = utcnow()
-
- LOG.debug('CPU: %d', self.cputime)
-
- # Skip calculation on first pass. Need delta to get a meaningful value.
- if cputime_last_updated is None:
- return None
-
- # Calculate the number of seconds between samples.
- d = self.cputime_last_updated - cputime_last_updated
- t = d.days * 86400 + d.seconds
-
- LOG.debug('t = %d', t)
-
- # Calculate change over time in number of nanoseconds of CPU time used.
- cputime_delta = self.cputime - cputime_last
-
- LOG.debug('cputime_delta = %s', cputime_delta)
-
- # Get the number of virtual cpus in this domain.
- vcpus = int(info['num_cpu'])
-
- LOG.debug('vcpus = %d', vcpus)
-
- # Calculate CPU % used and cap at 100.
- return min(cputime_delta / (t * vcpus * 1.0e9) * 100, 100)
-
- def fetch_disk_stats(self):
- """
- Returns disk usage statistics for this instance.
- """
- rd = 0
- wr = 0
-
- disks = self.conn.get_disks(self.instance_id)
-
- # Aggregate the read and write totals.
- for disk in disks:
- try:
- rd_req, rd_bytes, wr_req, wr_bytes, errs = \
- self.conn.block_stats(self.instance_id, disk)
- rd += rd_bytes
- wr += wr_bytes
- except TypeError:
- iid = self.instance_id
- LOG.error(_('Cannot get blockstats for "%(disk)s"'
- ' on "%(iid)s"') % locals())
- raise
-
- return '%d:%d' % (rd, wr)
-
- def fetch_net_stats(self):
- """
- Returns network usage statistics for this instance.
- """
- rx = 0
- tx = 0
-
- interfaces = self.conn.get_interfaces(self.instance_id)
-
- # Aggregate the in and out totals.
- for interface in interfaces:
- try:
- stats = self.conn.interface_stats(self.instance_id, interface)
- rx += stats[0]
- tx += stats[4]
- except TypeError:
- iid = self.instance_id
- LOG.error(_('Cannot get ifstats for "%(interface)s"'
- ' on "%(iid)s"') % locals())
- raise
-
- return '%d:%d' % (rx, tx)
-
-
-class InstanceMonitor(object, service.Service):
- """
- Monitors the running instances of the current machine.
- """
-
- def __init__(self):
- """
- Initialize the monitoring loop.
- """
- self._instances = {}
- self._loop = task.LoopingCall(self.updateInstances)
-
- def startService(self):
- self._instances = {}
- self._loop.start(interval=FLAGS.monitoring_instances_delay)
- service.Service.startService(self)
-
- def stopService(self):
- self._loop.stop()
- service.Service.stopService(self)
-
- def updateInstances(self):
- """
- Update resource usage for all running instances.
- """
- try:
- conn = virt_connection.get_connection(read_only=True)
- except Exception, exn:
- LOG.exception(_('unexpected exception getting connection'))
- time.sleep(FLAGS.monitoring_instances_delay)
- return
-
- domain_ids = conn.list_instances()
- try:
- self.updateInstances_(conn, domain_ids)
- except Exception, exn:
- LOG.exception('updateInstances_')
-
- def updateInstances_(self, conn, domain_ids):
- for domain_id in domain_ids:
- if not domain_id in self._instances:
- instance = Instance(conn, domain_id)
- self._instances[domain_id] = instance
- LOG.debug(_('Found instance: %s'), domain_id)
-
- for key in self._instances.keys():
- instance = self._instances[key]
- if instance.needs_update():
- instance.update()
diff --git a/nova/tests/test_twistd.py b/nova/tests/test_twistd.py
deleted file mode 100644
index ff8627c3b..000000000
--- a/nova/tests/test_twistd.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
-# Copyright 2010 United States Government as represented by the
-# Administrator of the National Aeronautics and Space Administration.
-# All Rights Reserved.
-#
-# 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.
-
-import StringIO
-import sys
-
-from nova import twistd
-from nova import exception
-from nova import flags
-from nova import test
-
-
-FLAGS = flags.FLAGS
-
-
-class TwistdTestCase(test.TestCase):
- def setUp(self):
- super(TwistdTestCase, self).setUp()
- self.Options = twistd.WrapTwistedOptions(twistd.TwistdServerOptions)
- sys.stdout = StringIO.StringIO()
-
- def tearDown(self):
- super(TwistdTestCase, self).tearDown()
- sys.stdout = sys.__stdout__
-
- def test_basic(self):
- options = self.Options()
- argv = options.parseOptions()
-
- def test_logfile(self):
- options = self.Options()
- argv = options.parseOptions(['--logfile=foo'])
- self.assertEqual(FLAGS.logfile, 'foo')
-
- def test_help(self):
- options = self.Options()
- self.assertRaises(SystemExit, options.parseOptions, ['--help'])
- self.assert_('pidfile' in sys.stdout.getvalue())
diff --git a/nova/twistd.py b/nova/twistd.py
deleted file mode 100644
index 15cf67825..000000000
--- a/nova/twistd.py
+++ /dev/null
@@ -1,267 +0,0 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
-# Copyright 2010 United States Government as represented by the
-# Administrator of the National Aeronautics and Space Administration.
-# All Rights Reserved.
-#
-# 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.
-
-"""
-Twisted daemon helpers, specifically to parse out gFlags from twisted flags,
-manage pid files and support syslogging.
-"""
-
-import gflags
-import os
-import signal
-import sys
-import time
-from twisted.scripts import twistd
-from twisted.python import log
-from twisted.python import reflect
-from twisted.python import runtime
-from twisted.python import usage
-
-from nova import flags
-from nova import log as logging
-
-
-if runtime.platformType == "win32":
- from twisted.scripts._twistw import ServerOptions
-else:
- from twisted.scripts._twistd_unix import ServerOptions
-
-
-FLAGS = flags.FLAGS
-
-
-class TwistdServerOptions(ServerOptions):
- def parseArgs(self, *args):
- return
-
-
-class FlagParser(object):
- # this is a required attribute for gflags
- syntactic_help = ''
-
- def __init__(self, parser):
- self.parser = parser
-
- def Parse(self, s):
- return self.parser(s)
-
-
-def WrapTwistedOptions(wrapped):
- class TwistedOptionsToFlags(wrapped):
- subCommands = None
-
- def __init__(self):
- # NOTE(termie): _data exists because Twisted stuff expects
- # to be able to set arbitrary things that are
- # not actual flags
- self._data = {}
- self._flagHandlers = {}
- self._paramHandlers = {}
-
- # Absorb the twistd flags into our FLAGS
- self._absorbFlags()
- self._absorbParameters()
- self._absorbHandlers()
-
- wrapped.__init__(self)
-
- def _absorbFlags(self):
- twistd_flags = []
- reflect.accumulateClassList(self.__class__, 'optFlags',
- twistd_flags)
- for flag in twistd_flags:
- key = flag[0].replace('-', '_')
- if hasattr(FLAGS, key):
- continue
- flags.DEFINE_boolean(key, None, str(flag[-1]))
-
- def _absorbParameters(self):
- twistd_params = []
- reflect.accumulateClassList(self.__class__, 'optParameters',
- twistd_params)
- for param in twistd_params:
- key = param[0].replace('-', '_')
- if hasattr(FLAGS, key):
- continue
- if len(param) > 4:
- flags.DEFINE(FlagParser(param[4]),
- key, param[2], str(param[3]),
- serializer=gflags.ArgumentSerializer())
- else:
- flags.DEFINE_string(key, param[2], str(param[3]))
-
- def _absorbHandlers(self):
- twistd_handlers = {}
- reflect.addMethodNamesToDict(self.__class__, twistd_handlers,
- "opt_")
-
- # NOTE(termie): Much of the following is derived/copied from
- # twisted.python.usage with the express purpose of
- # providing compatibility
- for name in twistd_handlers.keys():
- method = getattr(self, 'opt_' + name)
-
- takesArg = not usage.flagFunction(method, name)
- doc = getattr(method, '__doc__', None)
- if not doc:
- doc = 'undocumented'
-
- if not takesArg:
- if name not in FLAGS:
- flags.DEFINE_boolean(name, None, doc)
- self._flagHandlers[name] = method
- else:
- if name not in FLAGS:
- flags.DEFINE_string(name, None, doc)
- self._paramHandlers[name] = method
-
- def _doHandlers(self):
- for flag, handler in self._flagHandlers.iteritems():
- if self[flag]:
- handler()
- for param, handler in self._paramHandlers.iteritems():
- if self[param] is not None:
- handler(self[param])
-
- def __str__(self):
- return str(FLAGS)
-
- def parseOptions(self, options=None):
- if options is None:
- options = sys.argv
- else:
- options.insert(0, '')
-
- args = FLAGS(options)
- logging.setup()
- argv = args[1:]
- # ignore subcommands
-
- try:
- self.parseArgs(*argv)
- except TypeError:
- raise usage.UsageError(_("Wrong number of arguments."))
-
- self.postOptions()
- return args
-
- def parseArgs(self, *args):
- # TODO(termie): figure out a decent way of dealing with args
- #return
- wrapped.parseArgs(self, *args)
-
- def postOptions(self):
- self._doHandlers()
-
- wrapped.postOptions(self)
-
- def __getitem__(self, key):
- key = key.replace('-', '_')
- try:
- return getattr(FLAGS, key)
- except (AttributeError, KeyError):
- return self._data[key]
-
- def __setitem__(self, key, value):
- key = key.replace('-', '_')
- try:
- return setattr(FLAGS, key, value)
- except (AttributeError, KeyError):
- self._data[key] = value
-
- def get(self, key, default):
- key = key.replace('-', '_')
- try:
- return getattr(FLAGS, key)
- except (AttributeError, KeyError):
- self._data.get(key, default)
-
- return TwistedOptionsToFlags
-
-
-def stop(pidfile):
- """
- Stop the daemon
- """
- # Get the pid from the pidfile
- try:
- pf = file(pidfile, 'r')
- pid = int(pf.read().strip())
- pf.close()
- except IOError:
- pid = None
-
- if not pid:
- message = _("pidfile %s does not exist. Daemon not running?\n")
- sys.stderr.write(message % pidfile)
- # Not an error in a restart
- return
-
- # Try killing the daemon process
- try:
- while 1:
- os.kill(pid, signal.SIGKILL)
- time.sleep(0.1)
- except OSError, err:
- err = str(err)
- if err.find(_("No such process")) > 0:
- if os.path.exists(pidfile):
- os.remove(pidfile)
- else:
- print str(err)
- sys.exit(1)
-
-
-def serve(filename):
- logging.debug(_("Serving %s") % filename)
- name = os.path.basename(filename)
- OptionsClass = WrapTwistedOptions(TwistdServerOptions)
- options = OptionsClass()
- argv = options.parseOptions()
- FLAGS.python = filename
- FLAGS.no_save = True
- if not FLAGS.pidfile:
- FLAGS.pidfile = '%s.pid' % name
- elif FLAGS.pidfile.endswith('twistd.pid'):
- FLAGS.pidfile = FLAGS.pidfile.replace('twistd.pid', '%s.pid' % name)
- if not FLAGS.prefix:
- FLAGS.prefix = name
- elif FLAGS.prefix.endswith('twisted'):
- FLAGS.prefix = FLAGS.prefix.replace('twisted', name)
-
- action = 'start'
- if len(argv) > 1:
- action = argv.pop()
-
- if action == 'stop':
- stop(FLAGS.pidfile)
- sys.exit()
- elif action == 'restart':
- stop(FLAGS.pidfile)
- elif action == 'start':
- pass
- else:
- print 'usage: %s [options] [start|stop|restart]' % argv[0]
- sys.exit(1)
-
- logging.debug(_("Full set of FLAGS:"))
- for flag in FLAGS:
- logging.debug("%s : %s" % (flag, FLAGS.get(flag, None)))
-
- logging.audit(_("Starting %s"), name)
- twistd.runApp(options)
diff --git a/nova/virt/fake.py b/nova/virt/fake.py
index 26bc421c0..2898f23a4 100644
--- a/nova/virt/fake.py
+++ b/nova/virt/fake.py
@@ -340,8 +340,7 @@ class FakeConnection(driver.ComputeDriver):
only useful for giving back to this layer as a parameter to
disk_stats). These IDs only need to be unique for a given instance.
- Note that this function takes an instance ID, not a
- compute.service.Instance, so that it can be called by compute.monitor.
+ Note that this function takes an instance ID.
"""
return ['A_DISK']
@@ -353,8 +352,7 @@ class FakeConnection(driver.ComputeDriver):
interface_stats). These IDs only need to be unique for a given
instance.
- Note that this function takes an instance ID, not a
- compute.service.Instance, so that it can be called by compute.monitor.
+ Note that this function takes an instance ID.
"""
return ['A_VIF']
@@ -374,8 +372,7 @@ class FakeConnection(driver.ComputeDriver):
having to do the aggregation. On those platforms, this method is
unused.
- Note that this function takes an instance ID, not a
- compute.service.Instance, so that it can be called by compute.monitor.
+ Note that this function takes an instance ID.
"""
return [0L, 0L, 0L, 0L, None]
@@ -395,8 +392,7 @@ class FakeConnection(driver.ComputeDriver):
having to do the aggregation. On those platforms, this method is
unused.
- Note that this function takes an instance ID, not a
- compute.service.Instance, so that it can be called by compute.monitor.
+ Note that this function takes an instance ID.
"""
return [0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L]
diff --git a/nova/virt/libvirt/connection.py b/nova/virt/libvirt/connection.py
index 17c328a83..b9b247aab 100644
--- a/nova/virt/libvirt/connection.py
+++ b/nova/virt/libvirt/connection.py
@@ -1087,8 +1087,7 @@ class LibvirtConnection(driver.ComputeDriver):
def get_disks(self, instance_name):
"""
- Note that this function takes an instance name, not an Instance, so
- that it can be called by monitor.
+ Note that this function takes an instance name.
Returns a list of all block devices for this domain.
"""
@@ -1129,8 +1128,7 @@ class LibvirtConnection(driver.ComputeDriver):
def get_interfaces(self, instance_name):
"""
- Note that this function takes an instance name, not an Instance, so
- that it can be called by monitor.
+ Note that this function takes an instance name.
Returns a list of all network interfaces for this instance.
"""
@@ -1345,16 +1343,14 @@ class LibvirtConnection(driver.ComputeDriver):
def block_stats(self, instance_name, disk):
"""
- Note that this function takes an instance name, not an Instance, so
- that it can be called by monitor.
+ Note that this function takes an instance name.
"""
domain = self._lookup_by_name(instance_name)
return domain.blockStats(disk)
def interface_stats(self, instance_name, interface):
"""
- Note that this function takes an instance name, not an Instance, so
- that it can be called by monitor.
+ Note that this function takes an instance name.
"""
domain = self._lookup_by_name(instance_name)
return domain.interfaceStats(interface)