regular boot working again

1 files changed, 291 insertions, 0 deletions

diff --git a/nova/api/openstack/create_instance_controller.py b/nova/api/openstack/create_instance_controller.py
new file mode 100644
index 000000000..52c1e444e
--- /dev/null
+++ b/nova/api/openstack/create_instance_controller.py
@@ -0,0 +1,291 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 OpenStack LLC.
+# 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 re
+from urlparse import urlparse
+from webob import exc
+from xml.dom import minidom
+
+import webob
+
+from nova import exception
+from nova import flags
+from nova import log as logging
+from nova import quota
+from nova import utils
+from nova import wsgi
+
+from nova.compute import instance_types
+from nova.api.openstack import common
+from nova.api.openstack import faults
+from nova.auth import manager as auth_manager
+
+
+LOG = logging.getLogger('nova.api.openstack.create_instance_controller')
+FLAGS = flags.FLAGS
+
+
+class OpenstackCreateInstanceController(common.OpenstackController):
+    """This is the base class for OS API Controllers that
+    are capable of creating instances (currently Servers and Zones).
+
+    Once we stabilize the Zones portion of the API we may be able
+    to move this code back into servers.py
+    """
+    
+    def __init__(self):
+        """We need the image service to create an instance."""
+        self._image_service = utils.import_object(FLAGS.image_service)
+        super(OpenstackCreateInstanceController, self).__init__()
+
+    def create_instance(self, req, create_method):
+        """Creates a new server for the given user. The approach
+        used depends on the create_method. For example, the standard
+        POST /server call uses compute.api.create(), while 
+        POST /zones/server uses compute.api.create_all_at_once().
+
+        The problem is, both approaches return different values (i.e.
+        [instance dicts] vs. reservation_id). So the handling of the
+        return type from this method is left to the caller. 
+        """
+        env = self._deserialize_create(req)
+        if not env:
+            return faults.Fault(exc.HTTPUnprocessableEntity())
+
+        context = req.environ['nova.context']
+
+        password = self._get_server_admin_password(env['server'])
+
+        key_name = None
+        key_data = None
+        key_pairs = auth_manager.AuthManager.get_key_pairs(context)
+        if key_pairs:
+            key_pair = key_pairs[0]
+            key_name = key_pair['name']
+            key_data = key_pair['public_key']
+
+        requested_image_id = self._image_id_from_req_data(env)
+        try:
+            image_id = common.get_image_id_from_image_hash(self._image_service,
+                context, requested_image_id)
+        except:
+            msg = _("Can not find requested image")
+            return faults.Fault(exc.HTTPBadRequest(msg))
+
+        kernel_id, ramdisk_id = self._get_kernel_ramdisk_from_image(
+            req, image_id)
+
+        personality = env['server'].get('personality')
+        injected_files = []
+        if personality:
+            injected_files = self._get_injected_files(personality)
+
+        flavor_id = self._flavor_id_from_req_data(env)
+
+        if not 'name' in env['server']:
+            msg = _("Server name is not defined")
+            return exc.HTTPBadRequest(msg)
+
+        zone_blob = env['server'].get('blob')
+        reservation_id = env['server'].get('reservation_id')
+        name = env['server']['name']
+        self._validate_server_name(name)
+        name = name.strip()
+
+        inst_type = instance_types.get_instance_type_by_flavor_id(flavor_id)
+        extra_values = {
+            'instance_type': inst_type,
+            'image_id': requested_image_id,
+            'password': password
+        }
+
+        try:
+            return (extra_values,
+                    create_method(context,
+                                  inst_type,
+                                  image_id,
+                                  kernel_id=kernel_id,
+                                  ramdisk_id=ramdisk_id,
+                                  display_name=name,
+                                  display_description=name,
+                                  key_name=key_name,
+                                  key_data=key_data,
+                                  metadata=env['server'].get('metadata', {}),
+                                  injected_files=injected_files,
+                                  admin_password=password,
+                                  zone_blob=zone_blob,
+                                  reservation_id=reservation_id
+                    )
+                )
+        except quota.QuotaError as error:
+            self._handle_quota_error(error)
+
+        # Let the caller deal with unhandled exceptions.
+
+    def _handle_quota_error(self, error):
+        """
+        Reraise quota errors as api-specific http exceptions
+        """
+        if error.code == "OnsetFileLimitExceeded":
+            expl = _("Personality file limit exceeded")
+            raise exc.HTTPBadRequest(explanation=expl)
+        if error.code == "OnsetFilePathLimitExceeded":
+            expl = _("Personality file path too long")
+            raise exc.HTTPBadRequest(explanation=expl)
+        if error.code == "OnsetFileContentLimitExceeded":
+            expl = _("Personality file content too long")
+            raise exc.HTTPBadRequest(explanation=expl)
+        # if the original error is okay, just reraise it
+        raise error
+
+    def _deserialize_create(self, request):
+        """
+        Deserialize a create request
+
+        Overrides normal behavior in the case of xml content
+        """
+        if request.content_type == "application/xml":
+            deserializer = ServerCreateRequestXMLDeserializer()
+            return deserializer.deserialize(request.body)
+        else:
+            return self._deserialize(request.body, request.get_content_type())
+
+    def _get_server_admin_password(self, server):
+        """ Determine the admin password for a server on creation """
+        password = server.get('adminPass')
+        if password is None:
+            return utils.generate_password(16)
+        if not isinstance(password, basestring) or password == '':
+            msg = _("Invalid adminPass")
+            raise exc.HTTPBadRequest(msg)
+        return password
+
+    def _get_kernel_ramdisk_from_image(self, req, image_id):
+        """Fetch an image from the ImageService, then if present, return the
+        associated kernel and ramdisk image IDs.
+        """
+        context = req.environ['nova.context']
+        image_meta = self._image_service.show(context, image_id)
+        # NOTE(sirp): extracted to a separate method to aid unit-testing, the
+        # new method doesn't need a request obj or an ImageService stub
+        kernel_id, ramdisk_id = self._do_get_kernel_ramdisk_from_image(
+            image_meta)
+        return kernel_id, ramdisk_id
+
+    @staticmethod
+    def  _do_get_kernel_ramdisk_from_image(image_meta):
+        """Given an ImageService image_meta, return kernel and ramdisk image
+        ids if present.
+
+        This is only valid for `ami` style images.
+        """
+        image_id = image_meta['id']
+        if image_meta['status'] != 'active':
+            raise exception.ImageUnacceptable(image_id=image_id,
+                                              reason=_("status is not active"))
+
+        if image_meta.get('container_format') != 'ami':
+            return None, None
+
+        try:
+            kernel_id = image_meta['properties']['kernel_id']
+        except KeyError:
+            raise exception.KernelNotFoundForImage(image_id=image_id)
+
+        try:
+            ramdisk_id = image_meta['properties']['ramdisk_id']
+        except KeyError:
+            raise exception.RamdiskNotFoundForImage(image_id=image_id)
+
+        return kernel_id, ramdisk_id
+
+
+class ServerCreateRequestXMLDeserializer(object):
+    """
+    Deserializer to handle xml-formatted server create requests.
+
+    Handles standard server attributes as well as optional metadata
+    and personality attributes
+    """
+
+    def deserialize(self, string):
+        """Deserialize an xml-formatted server create request"""
+        dom = minidom.parseString(string)
+        server = self._extract_server(dom)
+        return {'server': server}
+
+    def _extract_server(self, node):
+        """Marshal the server attribute of a parsed request"""
+        server = {}
+        server_node = self._find_first_child_named(node, 'server')
+        for attr in ["name", "imageId", "flavorId", "imageRef", "flavorRef"]:
+            if server_node.getAttribute(attr):
+                server[attr] = server_node.getAttribute(attr)
+        metadata = self._extract_metadata(server_node)
+        if metadata is not None:
+            server["metadata"] = metadata
+        personality = self._extract_personality(server_node)
+        if personality is not None:
+            server["personality"] = personality
+        return server
+
+    def _extract_metadata(self, server_node):
+        """Marshal the metadata attribute of a parsed request"""
+        metadata_node = self._find_first_child_named(server_node, "metadata")
+        if metadata_node is None:
+            return None
+        metadata = {}
+        for meta_node in self._find_children_named(metadata_node, "meta"):
+            key = meta_node.getAttribute("key")
+            metadata[key] = self._extract_text(meta_node)
+        return metadata
+
+    def _extract_personality(self, server_node):
+        """Marshal the personality attribute of a parsed request"""
+        personality_node = \
+                self._find_first_child_named(server_node, "personality")
+        if personality_node is None:
+            return None
+        personality = []
+        for file_node in self._find_children_named(personality_node, "file"):
+            item = {}
+            if file_node.hasAttribute("path"):
+                item["path"] = file_node.getAttribute("path")
+            item["contents"] = self._extract_text(file_node)
+            personality.append(item)
+        return personality
+
+    def _find_first_child_named(self, parent, name):
+        """Search a nodes children for the first child with a given name"""
+        for node in parent.childNodes:
+            if node.nodeName == name:
+                return node
+        return None
+
+    def _find_children_named(self, parent, name):
+        """Return all of a nodes children who have the given name"""
+        for node in parent.childNodes:
+            if node.nodeName == name:
+                yield node
+
+    def _extract_text(self, node):
+        """Get the text field contained by the given node"""
+        if len(node.childNodes) == 1:
+            child = node.childNodes[0]
+            if child.nodeType == child.TEXT_NODE:
+                return child.nodeValue
+        return ""