text: # -*- coding: utf-8 -*- #
  # Copyright 2017 Google LLC. 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 updating networks."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import unicode_literals
  
  from googlecloudsdk.api_lib.compute import base_classes
  from googlecloudsdk.api_lib.compute.operations import poller
  from googlecloudsdk.api_lib.util import waiter
  from googlecloudsdk.calliope import base
  from googlecloudsdk.command_lib.compute.networks import flags
  from googlecloudsdk.command_lib.compute.networks import network_utils
  from googlecloudsdk.core import log
  from googlecloudsdk.core import resources
  from googlecloudsdk.core.console import console_io
  
  
  @base.ReleaseTracks(base.ReleaseTrack.BETA, base.ReleaseTrack.GA)
  class Update(base.UpdateCommand):
    r"""Update a Google Compute Engine Network.
  
    *{command}* is used to update virtual networks. The updates that
    cabe be performed on a network are changing the BGP routing mode
    and switching from auto subnet mode to custom subnet mode. Switching
    from auto subnet mode to custom subnet mode cannot be undone.
  
    ## EXAMPLES
  
    To update regional network with the name 'network-name' to global, run:
  
      $ {command} network-name \
        --bgp-routing-mode=global
  
    To update an auto subnet mode network with the name 'network-name' to custom
    subnet mode, run:
  
      $ {command} network-name \
        --switch-to-custom-subnet-mode
  
    """
  
    NETWORK_ARG = None
  
    @classmethod
    def Args(cls, parser):
      cls.NETWORK_ARG = flags.NetworkArgument()
      cls.NETWORK_ARG.AddArgument(parser)
      base.ASYNC_FLAG.AddToParser(parser)
      network_utils.AddUpdateArgs(parser)
  
    def Run(self, args):
      holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
      messages = holder.client.messages
      service = holder.client.apitools_client.networks
  
      network_ref = self.NETWORK_ARG.ResolveAsResource(args, holder.resources)
  
      if args.switch_to_custom_subnet_mode:
        prompt_msg = 'Network [{0}] will be switched to custom mode. '.format(
            network_ref.Name()) + 'This operation cannot be undone.'
        console_io.PromptContinue(
            message=prompt_msg, default=True, cancel_on_no=True)
        result = service.SwitchToCustomMode(
            messages.ComputeNetworksSwitchToCustomModeRequest(
                project=network_ref.project, network=network_ref.Name()))
        operation_ref = resources.REGISTRY.Parse(
            result.name,
            params={'project': network_ref.project},
            collection='compute.globalOperations')
  
        if args.async_:
          log.UpdatedResource(
              operation_ref,
              kind='network {0}'.format(network_ref.Name()),
              is_async=True,
              details='Run the [gcloud compute operations describe] command '
              'to check the status of this operation.')
          return result
  
        operation_poller = poller.Poller(service, network_ref)
        return waiter.WaitFor(operation_poller, operation_ref,
                              'Switching network to custom-mode')
  
      network_resource = messages.Network()
      should_patch = False
      if getattr(args, 'mtu', None) is not None:
        network_resource.mtu = args.mtu
        should_patch = True
  
      if args.bgp_routing_mode:
        should_patch = True
        network_resource.routingConfig = messages.NetworkRoutingConfig()
        network_resource.routingConfig.routingMode = (
            messages.NetworkRoutingConfig.RoutingModeValueValuesEnum(
                args.bgp_routing_mode.upper()))
  
      if should_patch:
        resource = service.Patch(
            messages.ComputeNetworksPatchRequest(
                project=network_ref.project,
                network=network_ref.Name(),
                networkResource=network_resource))
  
      return resource
  
  
  @base.ReleaseTracks(base.ReleaseTrack.ALPHA)
  class UpdateAlpha(Update):
    """Update a Google Compute Engine Network."""
  
    @classmethod
    def Args(cls, parser):
      cls.NETWORK_ARG = flags.NetworkArgument()
      cls.NETWORK_ARG.AddArgument(parser)
      base.ASYNC_FLAG.AddToParser(parser)
      network_utils.AddUpdateArgsAlpha(parser)
  
  
  Update.detailed_help = {
      'brief':
          'Update a Google Compute Engine network',
      'DESCRIPTION':
          """\
  
          *{command}* is used to update Google Compute Engine networks."""
  }
  