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OpenStack Study: suspend_server.py**** CubicPower OpenStack Study ****
# # 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 webob from webob import exc from nova.api.openstack import common from nova.api.openstack import extensions from nova.api.openstack import wsgi from nova import compute from nova import exception from nova.openstack.common import log as logging LOG = logging.getLogger(__name__) ALIAS = "os-suspend-server"
**** CubicPower OpenStack Study **** def authorize(context, action_name): action = 'v3:%s:%s' % (ALIAS, action_name) extensions.extension_authorizer('compute', action)(context)
**** CubicPower OpenStack Study **** class SuspendServerController(wsgi.Controller):
**** CubicPower OpenStack Study **** def __init__(self, *args, **kwargs): super(SuspendServerController, self).__init__(*args, **kwargs) self.compute_api = compute.API() @extensions.expected_errors((404, 409)) @wsgi.action('suspend')
**** CubicPower OpenStack Study **** def _suspend(self, req, id, body): """Permit admins to suspend the server.""" context = req.environ['nova.context'] authorize(context, 'suspend') try: server = common.get_instance(self.compute_api, context, id, want_objects=True) self.compute_api.suspend(context, server) except exception.InstanceIsLocked as e: raise exc.HTTPConflict(explanation=e.format_message()) except exception.InstanceInvalidState as state_error: common.raise_http_conflict_for_instance_invalid_state(state_error, 'suspend') return webob.Response(status_int=202) @extensions.expected_errors((404, 409)) @wsgi.action('resume')
**** CubicPower OpenStack Study **** def _resume(self, req, id, body): """Permit admins to resume the server from suspend.""" context = req.environ['nova.context'] authorize(context, 'resume') try: server = common.get_instance(self.compute_api, context, id, want_objects=True) self.compute_api.resume(context, server) except exception.InstanceIsLocked as e: raise exc.HTTPConflict(explanation=e.format_message()) except exception.InstanceInvalidState as state_error: common.raise_http_conflict_for_instance_invalid_state(state_error, 'resume') return webob.Response(status_int=202)
**** CubicPower OpenStack Study **** class SuspendServer(extensions.V3APIExtensionBase): """Enable suspend/resume server actions.""" name = "SuspendServer" alias = ALIAS namespace = "http://docs.openstack.org/compute/ext/%s/api/v3" % ALIAS version = 1
**** CubicPower OpenStack Study **** def get_controller_extensions(self): controller = SuspendServerController() extension = extensions.ControllerExtension(self, 'servers', controller) return [extension]
**** CubicPower OpenStack Study **** def get_resources(self): return []
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