152 lines
6.5 KiB
Python
152 lines
6.5 KiB
Python
# Copyright 2011 OpenStack Foundation
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# Copyright 2013 IBM Corp.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_log import log as logging
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from oslo_utils import excutils
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from oslo_utils import strutils
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from webob import exc
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from nova.api.openstack import api_version_request
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from nova.api.openstack import common
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from nova.api.openstack.compute.schemas import migrate_server
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova.api import validation
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from nova import compute
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from nova import exception
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from nova.i18n import _
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from nova.i18n import _LE
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from nova.policies import migrate_server as ms_policies
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LOG = logging.getLogger(__name__)
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ALIAS = "os-migrate-server"
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class MigrateServerController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(MigrateServerController, self).__init__(*args, **kwargs)
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self.compute_api = compute.API()
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@wsgi.response(202)
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@extensions.expected_errors((400, 403, 404, 409))
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@wsgi.action('migrate')
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def _migrate(self, req, id, body):
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"""Permit admins to migrate a server to a new host."""
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context = req.environ['nova.context']
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context.can(ms_policies.POLICY_ROOT % 'migrate')
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instance = common.get_instance(self.compute_api, context, id)
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try:
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self.compute_api.resize(req.environ['nova.context'], instance)
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except (exception.TooManyInstances, exception.QuotaError) as e:
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raise exc.HTTPForbidden(explanation=e.format_message())
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except exception.InstanceIsLocked as e:
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raise exc.HTTPConflict(explanation=e.format_message())
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except exception.InstanceInvalidState as state_error:
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common.raise_http_conflict_for_instance_invalid_state(state_error,
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'migrate', id)
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except exception.InstanceNotFound as e:
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raise exc.HTTPNotFound(explanation=e.format_message())
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except exception.NoValidHost as e:
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raise exc.HTTPBadRequest(explanation=e.format_message())
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@wsgi.response(202)
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@extensions.expected_errors((400, 404, 409))
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@wsgi.action('os-migrateLive')
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@validation.schema(migrate_server.migrate_live, "2.0", "2.24")
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@validation.schema(migrate_server.migrate_live_v2_25, "2.25", "2.29")
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@validation.schema(migrate_server.migrate_live_v2_30, "2.30")
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def _migrate_live(self, req, id, body):
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"""Permit admins to (live) migrate a server to a new host."""
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context = req.environ["nova.context"]
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context.can(ms_policies.POLICY_ROOT % 'migrate_live')
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host = body["os-migrateLive"]["host"]
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block_migration = body["os-migrateLive"]["block_migration"]
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force = None
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async = api_version_request.is_supported(req, min_version='2.34')
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if api_version_request.is_supported(req, min_version='2.30'):
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force = self._get_force_param_for_live_migration(body, host)
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if api_version_request.is_supported(req, min_version='2.25'):
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if block_migration == 'auto':
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block_migration = None
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else:
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block_migration = strutils.bool_from_string(block_migration,
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strict=True)
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disk_over_commit = None
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else:
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disk_over_commit = body["os-migrateLive"]["disk_over_commit"]
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block_migration = strutils.bool_from_string(block_migration,
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strict=True)
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disk_over_commit = strutils.bool_from_string(disk_over_commit,
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strict=True)
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instance = common.get_instance(self.compute_api, context, id)
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try:
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self.compute_api.live_migrate(context, instance, block_migration,
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disk_over_commit, host, force, async)
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except exception.InstanceUnknownCell as e:
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raise exc.HTTPNotFound(explanation=e.format_message())
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except (exception.NoValidHost,
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exception.ComputeServiceUnavailable,
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exception.InvalidHypervisorType,
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exception.InvalidCPUInfo,
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exception.UnableToMigrateToSelf,
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exception.DestinationHypervisorTooOld,
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exception.InvalidLocalStorage,
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exception.InvalidSharedStorage,
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exception.HypervisorUnavailable,
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exception.MigrationPreCheckError,
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exception.LiveMigrationWithOldNovaNotSupported) as ex:
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if async:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Unexpected exception received from "
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"conductor during pre-live-migration checks "
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"'%(ex)s'"), {'ex': ex})
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else:
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raise exc.HTTPBadRequest(explanation=ex.format_message())
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except exception.InstanceIsLocked as e:
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raise exc.HTTPConflict(explanation=e.format_message())
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except exception.ComputeHostNotFound as e:
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raise exc.HTTPBadRequest(explanation=e.format_message())
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except exception.InstanceInvalidState as state_error:
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common.raise_http_conflict_for_instance_invalid_state(state_error,
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'os-migrateLive', id)
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def _get_force_param_for_live_migration(self, body, host):
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force = body["os-migrateLive"].get("force", False)
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force = strutils.bool_from_string(force, strict=True)
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if force is True and not host:
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message = _("Can't force to a non-provided destination")
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raise exc.HTTPBadRequest(explanation=message)
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return force
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class MigrateServer(extensions.V21APIExtensionBase):
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"""Enable migrate and live-migrate server actions."""
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name = "MigrateServer"
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alias = ALIAS
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version = 1
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def get_controller_extensions(self):
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controller = MigrateServerController()
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extension = extensions.ControllerExtension(self, 'servers', controller)
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return [extension]
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def get_resources(self):
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return []
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