text: # Lint as: python3
  # -*- coding: utf-8 -*- #
  # Copyright 2020 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.
  """Helpers for dealing with Private CA locations."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import unicode_literals
  
  from apitools.base.py import exceptions
  from googlecloudsdk.api_lib.privateca import base
  from googlecloudsdk.core import log
  from googlecloudsdk.core import properties
  
  
  # The subset of privateca locations where the v1beta1 API is available.
  _BetaLocations = [
      'asia-southeast1',
      'europe-west1',
      'europe-west4',
      'us-central1',
      'us-east1',
      'us-west1',
  ]
  # The list of locations where the v1 API is available. Used as a fallback in
  # case the ListLocations API is down.
  _V1Locations = [
      'asia-east1',
      'asia-east2',
      'asia-northeast1',
      'asia-northeast2',
      'asia-northeast3',
      'asia-south1',
      'asia-southeast1',
      'asia-southeast2',
      'australia-southeast1',
      'europe-north1',
      'europe-west1',
      'europe-west2',
      'europe-west3',
      'europe-west4',
      'europe-west6',
      'northamerica-northeast1',
      'southamerica-east1',
      'us-central1',
      'us-east1',
      'us-east4',
      'us-west1',
      'us-west2',
      'us-west3',
      'us-west4',
  ]
  
  
  def GetSupportedLocations(version='v1beta1'):
    """Gets a list of supported Private CA locations for the current project."""
    if version == 'v1beta1':
      # The beta API is only supported in a fixed list of locations, regardless of
      # what the ListLocations API returns.
      return _BetaLocations
    if version != 'v1':
      raise exceptions.NotYetImplementedError(
          'Unknown API version: {}'.format(version))
  
    client = base.GetClientInstance(api_version='v1')
    messages = base.GetMessagesModule(api_version='v1')
  
    project = properties.VALUES.core.project.GetOrFail()
  
    try:
      response = client.projects_locations.List(
          messages.PrivatecaProjectsLocationsListRequest(
              name='projects/{}'.format(project)))
      return [location.locationId for location in response.locations]
    except exceptions.HttpError as e:
      log.debug('ListLocations failed: %r.', e)
      log.debug('Falling back to hard-coded list.')
      return _V1Locations
  