old_contents: # Copyright (c) 2013 Mirantis Inc.
  #
  # 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.
  
  from blazar.plugins import base
  
  
  class DummyVMPlugin(base.BasePlugin):
      """Plugin for VM resource that does nothing."""
      resource_type = 'virtual:instance'
      title = 'Dummy VM Plugin'
      description = 'This plugin does nothing.'
  
      def reserve_resource(self, reservation_id, values):
          return None
  
      def on_start(self, resource_id):
          """Dummy VM plugin does nothing."""
          return 'VM %s should be waked up this moment.' % resource_id
  
      def on_end(self, resource_id):
          """Dummy VM plugin does nothing."""
          return 'VM %s should be deleted this moment.' % resource_id
  
new_contents: # Copyright (c) 2013 Mirantis Inc.
  #
  # 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.
  
  from blazar.plugins import base
  
  
  class DummyVMPlugin(base.BasePlugin):
      """Plugin for VM resource that does nothing."""
      resource_type = 'virtual:instance'
      title = 'Dummy VM Plugin'
      description = 'This plugin does nothing.'
  
      def reserve_resource(self, reservation_id, values):
          return None
  
      def update_reservation(self, reservation_id, values):
          return None
  
      def on_start(self, resource_id):
          """Dummy VM plugin does nothing."""
          return 'VM %s should be waked up this moment.' % resource_id
  
      def on_end(self, resource_id):
          """Dummy VM plugin does nothing."""
          return 'VM %s should be deleted this moment.' % resource_id
  
subject: Add update_reservation to dummy plugin