156 lines
6.2 KiB
Python
156 lines
6.2 KiB
Python
# Copyright 2016 OpenStack Foundation
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# All Rights Reserved.
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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 webob import exc
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from nova.api.openstack import common
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from nova.api.openstack.compute.schemas import server_migrations
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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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ALIAS = 'servers:migrations'
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authorize = extensions.os_compute_authorizer(ALIAS)
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def output(migration):
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"""Returns the desired output of the API from an object.
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From a Migrations's object this method returns the primitive
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object with the only necessary and expected fields.
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"""
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return {
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"created_at": migration.created_at,
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"dest_compute": migration.dest_compute,
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"dest_host": migration.dest_host,
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"dest_node": migration.dest_node,
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"disk_processed_bytes": migration.disk_processed,
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"disk_remaining_bytes": migration.disk_remaining,
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"disk_total_bytes": migration.disk_total,
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"id": migration.id,
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"memory_processed_bytes": migration.memory_processed,
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"memory_remaining_bytes": migration.memory_remaining,
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"memory_total_bytes": migration.memory_total,
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"server_uuid": migration.instance_uuid,
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"source_compute": migration.source_compute,
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"source_node": migration.source_node,
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"status": migration.status,
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"updated_at": migration.updated_at
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}
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class ServerMigrationsController(wsgi.Controller):
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"""The server migrations API controller for the OpenStack API."""
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def __init__(self):
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self.compute_api = compute.API(skip_policy_check=True)
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super(ServerMigrationsController, self).__init__()
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@wsgi.Controller.api_version("2.22")
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@wsgi.response(202)
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@extensions.expected_errors((400, 403, 404, 409))
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@wsgi.action('force_complete')
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@validation.schema(server_migrations.force_complete)
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def _force_complete(self, req, id, server_id, body):
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context = req.environ['nova.context']
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authorize(context, action='force_complete')
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instance = common.get_instance(self.compute_api, context, server_id)
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try:
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self.compute_api.live_migrate_force_complete(context, instance, 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.MigrationNotFoundByStatus,
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exception.InvalidMigrationState,
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exception.MigrationNotFoundForInstance) as e:
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raise exc.HTTPBadRequest(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(
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state_error, 'force_complete', server_id)
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@wsgi.Controller.api_version("2.23")
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@extensions.expected_errors(404)
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def index(self, req, server_id):
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"""Return all migrations of an instance in progress."""
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context = req.environ['nova.context']
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authorize(context, action="index")
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# NOTE(Shaohe Feng) just check the instance is available. To keep
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# consistency with other API, check it before get migrations.
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common.get_instance(self.compute_api, context, server_id)
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migrations = self.compute_api.get_migrations_in_progress_by_instance(
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context, server_id, 'live-migration')
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return {'migrations': [output(migration) for migration in migrations]}
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@wsgi.Controller.api_version("2.23")
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@extensions.expected_errors(404)
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def show(self, req, server_id, id):
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"""Return the migration of an instance in progress by id."""
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context = req.environ['nova.context']
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authorize(context, action="show")
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# NOTE(Shaohe Feng) just check the instance is available. To keep
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# consistency with other API, check it before get migrations.
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common.get_instance(self.compute_api, context, server_id)
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try:
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migration = self.compute_api.get_migration_by_id_and_instance(
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context, id, server_id)
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except exception.MigrationNotFoundForInstance:
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msg = _("In-progress live migration %(id)s is not found for"
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" server %(uuid)s.") % {"id": id, "uuid": server_id}
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raise exc.HTTPNotFound(explanation=msg)
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if migration.get("migration_type") != "live-migration":
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msg = _("Migration %(id)s for server %(uuid)s is not"
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" live-migration.") % {"id": id, "uuid": server_id}
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raise exc.HTTPNotFound(explanation=msg)
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# TODO(Shaohe Feng) we should share the in-progress list.
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in_progress = ['queued', 'preparing', 'running', 'post-migrating']
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if migration.get("status") not in in_progress:
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msg = _("Live migration %(id)s for server %(uuid)s is not in"
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" progress.") % {"id": id, "uuid": server_id}
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raise exc.HTTPNotFound(explanation=msg)
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return {'migration': output(migration)}
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class ServerMigrations(extensions.V21APIExtensionBase):
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"""Server Migrations API."""
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name = "ServerMigrations"
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alias = 'server-migrations'
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version = 1
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def get_resources(self):
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parent = {'member_name': 'server',
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'collection_name': 'servers'}
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member_actions = {'action': 'POST'}
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resources = [extensions.ResourceExtension(
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'migrations', ServerMigrationsController(),
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parent=parent, member_actions=member_actions)]
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return resources
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def get_controller_extensions(self):
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return []
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