text: # -*- coding: utf-8 -*-
  # Copyright 2020 Google LLC
  #
  # 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 abc
  from typing import Awaitable, Callable, Dict, Optional, Sequence, Union
  import packaging.version
  import pkg_resources
  from requests import __version__ as requests_version
  
  import google.auth  # type: ignore
  import google.api_core  # type: ignore
  from google.api_core import exceptions as core_exceptions  # type: ignore
  from google.api_core import gapic_v1  # type: ignore
  from google.api_core import retry as retries  # type: ignore
  from google.auth import credentials as ga_credentials  # type: ignore
  
  from google.cloud.compute_v1.types import compute
  
  try:
      DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
          gapic_version=pkg_resources.get_distribution("google-cloud-compute",).version,
          grpc_version=None,
          rest_version=requests_version,
      )
  except pkg_resources.DistributionNotFound:
      DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo()
  
  try:
      # google.auth.__version__ was added in 1.26.0
      _GOOGLE_AUTH_VERSION = google.auth.__version__
  except AttributeError:
      try:  # try pkg_resources if it is available
          _GOOGLE_AUTH_VERSION = pkg_resources.get_distribution("google-auth").version
      except pkg_resources.DistributionNotFound:  # pragma: NO COVER
          _GOOGLE_AUTH_VERSION = None
  
  
  class NetworkEndpointGroupsTransport(abc.ABC):
      """Abstract transport class for NetworkEndpointGroups."""
  
      AUTH_SCOPES = (
          "https://www.googleapis.com/auth/compute",
          "https://www.googleapis.com/auth/cloud-platform",
      )
  
      DEFAULT_HOST: str = "compute.googleapis.com"
  
      def __init__(
          self,
          *,
          host: str = DEFAULT_HOST,
          credentials: ga_credentials.Credentials = None,
          credentials_file: Optional[str] = None,
          scopes: Optional[Sequence[str]] = None,
          quota_project_id: Optional[str] = None,
          client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
          **kwargs,
      ) -> None:
          """Instantiate the transport.
  
          Args:
              host (Optional[str]):
                   The hostname to connect to.
              credentials (Optional[google.auth.credentials.Credentials]): The
                  authorization credentials to attach to requests. These
                  credentials identify the application to the service; if none
                  are specified, the client will attempt to ascertain the
                  credentials from the environment.
              credentials_file (Optional[str]): A file with credentials that can
                  be loaded with :func:`google.auth.load_credentials_from_file`.
                  This argument is mutually exclusive with credentials.
              scopes (Optional[Sequence[str]]): A list of scopes.
              quota_project_id (Optional[str]): An optional project to use for billing
                  and quota.
              client_info (google.api_core.gapic_v1.client_info.ClientInfo):
                  The client info used to send a user-agent string along with
                  API requests. If ``None``, then default info will be used.
                  Generally, you only need to set this if you're developing
                  your own client library.
          """
          # Save the hostname. Default to port 443 (HTTPS) if none is specified.
          if ":" not in host:
              host += ":443"
          self._host = host
  
          scopes_kwargs = self._get_scopes_kwargs(self._host, scopes)
  
          # Save the scopes.
          self._scopes = scopes or self.AUTH_SCOPES
  
          # If no credentials are provided, then determine the appropriate
          # defaults.
          if credentials and credentials_file:
              raise core_exceptions.DuplicateCredentialArgs(
                  "'credentials_file' and 'credentials' are mutually exclusive"
              )
  
          if credentials_file is not None:
              credentials, _ = google.auth.load_credentials_from_file(
                  credentials_file, **scopes_kwargs, quota_project_id=quota_project_id
              )
  
          elif credentials is None:
              credentials, _ = google.auth.default(
                  **scopes_kwargs, quota_project_id=quota_project_id
              )
  
          # Save the credentials.
          self._credentials = credentials
  
      # TODO(busunkim): This method is in the base transport
      # to avoid duplicating code across the transport classes. These functions
      # should be deleted once the minimum required versions of google-auth is increased.
  
      # TODO: Remove this function once google-auth >= 1.25.0 is required
      @classmethod
      def _get_scopes_kwargs(
          cls, host: str, scopes: Optional[Sequence[str]]
      ) -> Dict[str, Optional[Sequence[str]]]:
          """Returns scopes kwargs to pass to google-auth methods depending on the google-auth version"""
  
          scopes_kwargs = {}
  
          if _GOOGLE_AUTH_VERSION and (
              packaging.version.parse(_GOOGLE_AUTH_VERSION)
              >= packaging.version.parse("1.25.0")
          ):
              scopes_kwargs = {"scopes": scopes, "default_scopes": cls.AUTH_SCOPES}
          else:
              scopes_kwargs = {"scopes": scopes or cls.AUTH_SCOPES}
  
          return scopes_kwargs
  
      def _prep_wrapped_messages(self, client_info):
          # Precompute the wrapped methods.
          self._wrapped_methods = {
              self.aggregated_list: gapic_v1.method.wrap_method(
                  self.aggregated_list, default_timeout=None, client_info=client_info,
              ),
              self.attach_network_endpoints: gapic_v1.method.wrap_method(
                  self.attach_network_endpoints,
                  default_timeout=None,
                  client_info=client_info,
              ),
              self.delete: gapic_v1.method.wrap_method(
                  self.delete, default_timeout=None, client_info=client_info,
              ),
              self.detach_network_endpoints: gapic_v1.method.wrap_method(
                  self.detach_network_endpoints,
                  default_timeout=None,
                  client_info=client_info,
              ),
              self.get: gapic_v1.method.wrap_method(
                  self.get, default_timeout=None, client_info=client_info,
              ),
              self.insert: gapic_v1.method.wrap_method(
                  self.insert, default_timeout=None, client_info=client_info,
              ),
              self.list: gapic_v1.method.wrap_method(
                  self.list, default_timeout=None, client_info=client_info,
              ),
              self.list_network_endpoints: gapic_v1.method.wrap_method(
                  self.list_network_endpoints,
                  default_timeout=None,
                  client_info=client_info,
              ),
              self.test_iam_permissions: gapic_v1.method.wrap_method(
                  self.test_iam_permissions,
                  default_timeout=None,
                  client_info=client_info,
              ),
          }
  
      @property
      def aggregated_list(
          self,
      ) -> Callable[
          [compute.AggregatedListNetworkEndpointGroupsRequest],
          Union[
              compute.NetworkEndpointGroupAggregatedList,
              Awaitable[compute.NetworkEndpointGroupAggregatedList],
          ],
      ]:
          raise NotImplementedError()
  
      @property
      def attach_network_endpoints(
          self,
      ) -> Callable[
          [compute.AttachNetworkEndpointsNetworkEndpointGroupRequest],
          Union[compute.Operation, Awaitable[compute.Operation]],
      ]:
          raise NotImplementedError()
  
      @property
      def delete(
          self,
      ) -> Callable[
          [compute.DeleteNetworkEndpointGroupRequest],
          Union[compute.Operation, Awaitable[compute.Operation]],
      ]:
          raise NotImplementedError()
  
      @property
      def detach_network_endpoints(
          self,
      ) -> Callable[
          [compute.DetachNetworkEndpointsNetworkEndpointGroupRequest],
          Union[compute.Operation, Awaitable[compute.Operation]],
      ]:
          raise NotImplementedError()
  
      @property
      def get(
          self,
      ) -> Callable[
          [compute.GetNetworkEndpointGroupRequest],
          Union[compute.NetworkEndpointGroup, Awaitable[compute.NetworkEndpointGroup]],
      ]:
          raise NotImplementedError()
  
      @property
      def insert(
          self,
      ) -> Callable[
          [compute.InsertNetworkEndpointGroupRequest],
          Union[compute.Operation, Awaitable[compute.Operation]],
      ]:
          raise NotImplementedError()
  
      @property
      def list(
          self,
      ) -> Callable[
          [compute.ListNetworkEndpointGroupsRequest],
          Union[
              compute.NetworkEndpointGroupList,
              Awaitable[compute.NetworkEndpointGroupList],
          ],
      ]:
          raise NotImplementedError()
  
      @property
      def list_network_endpoints(
          self,
      ) -> Callable[
          [compute.ListNetworkEndpointsNetworkEndpointGroupsRequest],
          Union[
              compute.NetworkEndpointGroupsListNetworkEndpoints,
              Awaitable[compute.NetworkEndpointGroupsListNetworkEndpoints],
          ],
      ]:
          raise NotImplementedError()
  
      @property
      def test_iam_permissions(
          self,
      ) -> Callable[
          [compute.TestIamPermissionsNetworkEndpointGroupRequest],
          Union[
              compute.TestPermissionsResponse, Awaitable[compute.TestPermissionsResponse]
          ],
      ]:
          raise NotImplementedError()
  
  
  __all__ = ("NetworkEndpointGroupsTransport",)
  