text: # Copyright 2015 Google Inc. 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.
  """Command for abandoning instances owned by a managed instance group."""
  
  from googlecloudsdk.api_lib.compute import base_classes
  from googlecloudsdk.api_lib.compute import instance_groups_utils
  from googlecloudsdk.calliope import arg_parsers
  from googlecloudsdk.calliope import base
  from googlecloudsdk.command_lib.compute import flags
  
  
  def _AddArgs(parser, multizonal):
    """Adds args."""
    parser.add_argument('name',
                        help='The managed instance group name.')
    parser.add_argument(
        '--instances',
        type=arg_parsers.ArgList(min_length=1),
        action=arg_parsers.FloatingListValuesCatcher(),
        metavar='INSTANCE',
        required=True,
        help='Names of instances to abandon.')
    if multizonal:
      scope_parser = parser.add_mutually_exclusive_group()
      flags.AddRegionFlag(
          scope_parser,
          resource_type='instance group',
          operation_type='abandon instances',
          explanation=flags.REGION_PROPERTY_EXPLANATION_NO_DEFAULT)
      flags.AddZoneFlag(
          scope_parser,
          resource_type='instance group manager',
          operation_type='abandon instances',
          explanation=flags.ZONE_PROPERTY_EXPLANATION_NO_DEFAULT)
    else:
      flags.AddZoneFlag(
          parser,
          resource_type='instance group manager',
          operation_type='abandon instances')
  
  
  @base.ReleaseTracks(base.ReleaseTrack.GA, base.ReleaseTrack.BETA)
  class AbandonInstances(base_classes.BaseAsyncMutator):
    """Abandon instances owned by a managed instance group."""
  
    @staticmethod
    def Args(parser):
      _AddArgs(parser=parser, multizonal=False)
  
    @property
    def method(self):
      return 'AbandonInstances'
  
    @property
    def service(self):
      return self.compute.instanceGroupManagers
  
    @property
    def resource_type(self):
      return 'instanceGroupManagers'
  
    def CreateRequests(self, args):
      zone_ref = self.CreateZonalReference(args.name, args.zone)
      instance_refs = self.CreateZonalReferences(
          args.instances,
          zone_ref.zone,
          resource_type='instances')
      instances = [instance_ref.SelfLink() for instance_ref in instance_refs]
      return [(self.method,
               self.messages.ComputeInstanceGroupManagersAbandonInstancesRequest(
                   instanceGroupManager=zone_ref.Name(),
                   instanceGroupManagersAbandonInstancesRequest=(
                       self.messages.InstanceGroupManagersAbandonInstancesRequest(
                           instances=instances,
                       )
                   ),
                   project=self.project,
                   zone=zone_ref.zone,
               ),),]
  
  
  @base.ReleaseTracks(base.ReleaseTrack.ALPHA)
  class AbandonInstancesAlpha(base_classes.BaseAsyncMutator,
                              instance_groups_utils.InstanceGroupReferenceMixin,
                              instance_groups_utils.InstancesReferenceMixin):
    """Abandon instances owned by a managed instance group."""
  
    @staticmethod
    def Args(parser):
      _AddArgs(parser=parser, multizonal=True)
  
    @property
    def method(self):
      return 'AbandonInstances'
  
    @property
    def service(self):
      return self.compute.instanceGroupManagers
  
    @property
    def resource_type(self):
      return 'instanceGroupManagers'
  
    def CreateRequests(self, args):
      errors = []
      group_ref = self.CreateInstanceGroupReference(
          name=args.name, region=args.region, zone=args.zone)
      instances = self.CreateInstanceReferences(
          group_ref, args.instances, errors)
  
      if group_ref.Collection() == 'compute.instanceGroupManagers':
        service = self.compute.instanceGroupManagers
        request = (
            self.messages.
            ComputeInstanceGroupManagersAbandonInstancesRequest(
                instanceGroupManager=group_ref.Name(),
                instanceGroupManagersAbandonInstancesRequest=(
                    self.messages.InstanceGroupManagersAbandonInstancesRequest(
                        instances=instances,
                    )
                ),
                project=self.project,
                zone=group_ref.zone,
            ))
      else:
        service = self.compute.regionInstanceGroupManagers
        request = (
            self.messages.
            ComputeRegionInstanceGroupManagersAbandonInstancesRequest(
                instanceGroupManager=group_ref.Name(),
                regionInstanceGroupManagersAbandonInstancesRequest=(
                    self.messages.
                    RegionInstanceGroupManagersAbandonInstancesRequest(
                        instances=instances,
                    )
                ),
                project=self.project,
                region=group_ref.region,
            ))
  
      return [(service, self.method, request)]
  
  
  AbandonInstances.detailed_help = {
      'brief': 'Abandon instances owned by a managed instance group.',
      'DESCRIPTION': """
          *{command}* abandons one or more instances from a managed instance
  group, thereby reducing the targetSize of the group. Once instances have been
  abandoned, the currentSize of the group is automatically reduced as well to
  reflect the change.
  
  Abandoning an instance does not delete the underlying virtual machine instances,
  but just removes the instances from the instance group. If you would like the
  delete the underlying instances, use the delete-instances command instead.
  """,
  }
  AbandonInstancesAlpha.detailed_help = AbandonInstances.detailed_help
  