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 warnings
  from typing import Callable, Dict, Optional, Sequence, Tuple, Union
  
  from google.api_core import grpc_helpers
  from google.api_core import operations_v1
  from google.api_core import gapic_v1
  import google.auth  # type: ignore
  from google.auth import credentials as ga_credentials  # type: ignore
  from google.auth.transport.grpc import SslCredentials  # type: ignore
  
  import grpc  # type: ignore
  
  from google.cloud.storage_transfer_v1.types import transfer
  from google.cloud.storage_transfer_v1.types import transfer_types
  from google.longrunning import operations_pb2  # type: ignore
  from google.protobuf import empty_pb2  # type: ignore
  from .base import StorageTransferServiceTransport, DEFAULT_CLIENT_INFO
  
  
  class StorageTransferServiceGrpcTransport(StorageTransferServiceTransport):
      """gRPC backend transport for StorageTransferService.
  
      Storage Transfer Service and its protos.
      Transfers data between between Google Cloud Storage buckets or
      from a data source external to Google to a Cloud Storage bucket.
  
      This class defines the same methods as the primary client, so the
      primary client can load the underlying transport implementation
      and call it.
  
      It sends protocol buffers over the wire using gRPC (which is built on
      top of HTTP/2); the ``grpcio`` package must be installed.
      """
  
      _stubs: Dict[str, Callable]
  
      def __init__(
          self,
          *,
          host: str = "storagetransfer.googleapis.com",
          credentials: ga_credentials.Credentials = None,
          credentials_file: str = None,
          scopes: Sequence[str] = None,
          channel: grpc.Channel = None,
          api_mtls_endpoint: str = None,
          client_cert_source: Callable[[], Tuple[bytes, bytes]] = None,
          ssl_channel_credentials: grpc.ChannelCredentials = None,
          client_cert_source_for_mtls: Callable[[], Tuple[bytes, bytes]] = None,
          quota_project_id: Optional[str] = None,
          client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
          always_use_jwt_access: Optional[bool] = False,
      ) -> 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.
                  This argument is ignored if ``channel`` is provided.
              credentials_file (Optional[str]): A file with credentials that can
                  be loaded with :func:`google.auth.load_credentials_from_file`.
                  This argument is ignored if ``channel`` is provided.
              scopes (Optional(Sequence[str])): A list of scopes. This argument is
                  ignored if ``channel`` is provided.
              channel (Optional[grpc.Channel]): A ``Channel`` instance through
                  which to make calls.
              api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                  If provided, it overrides the ``host`` argument and tries to create
                  a mutual TLS channel with client SSL credentials from
                  ``client_cert_source`` or application default SSL credentials.
              client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                  Deprecated. A callback to provide client SSL certificate bytes and
                  private key bytes, both in PEM format. It is ignored if
                  ``api_mtls_endpoint`` is None.
              ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
                  for the grpc channel. It is ignored if ``channel`` is provided.
              client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                  A callback to provide client certificate bytes and private key bytes,
                  both in PEM format. It is used to configure a mutual TLS channel. It is
                  ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
              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.
              always_use_jwt_access (Optional[bool]): Whether self signed JWT should
                  be used for service account credentials.
  
          Raises:
            google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
                creation failed for any reason.
            google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
                and ``credentials_file`` are passed.
          """
          self._grpc_channel = None
          self._ssl_channel_credentials = ssl_channel_credentials
          self._stubs: Dict[str, Callable] = {}
          self._operations_client: Optional[operations_v1.OperationsClient] = None
  
          if api_mtls_endpoint:
              warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
          if client_cert_source:
              warnings.warn("client_cert_source is deprecated", DeprecationWarning)
  
          if channel:
              # Ignore credentials if a channel was passed.
              credentials = False
              # If a channel was explicitly provided, set it.
              self._grpc_channel = channel
              self._ssl_channel_credentials = None
  
          else:
              if api_mtls_endpoint:
                  host = api_mtls_endpoint
  
                  # Create SSL credentials with client_cert_source or application
                  # default SSL credentials.
                  if client_cert_source:
                      cert, key = client_cert_source()
                      self._ssl_channel_credentials = grpc.ssl_channel_credentials(
                          certificate_chain=cert, private_key=key
                      )
                  else:
                      self._ssl_channel_credentials = SslCredentials().ssl_credentials
  
              else:
                  if client_cert_source_for_mtls and not ssl_channel_credentials:
                      cert, key = client_cert_source_for_mtls()
                      self._ssl_channel_credentials = grpc.ssl_channel_credentials(
                          certificate_chain=cert, private_key=key
                      )
  
          # The base transport sets the host, credentials and scopes
          super().__init__(
              host=host,
              credentials=credentials,
              credentials_file=credentials_file,
              scopes=scopes,
              quota_project_id=quota_project_id,
              client_info=client_info,
              always_use_jwt_access=always_use_jwt_access,
          )
  
          if not self._grpc_channel:
              self._grpc_channel = type(self).create_channel(
                  self._host,
                  credentials=self._credentials,
                  credentials_file=credentials_file,
                  scopes=self._scopes,
                  ssl_credentials=self._ssl_channel_credentials,
                  quota_project_id=quota_project_id,
                  options=[
                      ("grpc.max_send_message_length", -1),
                      ("grpc.max_receive_message_length", -1),
                  ],
              )
  
          # Wrap messages. This must be done after self._grpc_channel exists
          self._prep_wrapped_messages(client_info)
  
      @classmethod
      def create_channel(
          cls,
          host: str = "storagetransfer.googleapis.com",
          credentials: ga_credentials.Credentials = None,
          credentials_file: str = None,
          scopes: Optional[Sequence[str]] = None,
          quota_project_id: Optional[str] = None,
          **kwargs,
      ) -> grpc.Channel:
          """Create and return a gRPC channel object.
          Args:
              host (Optional[str]): The host for the channel to use.
              credentials (Optional[~.Credentials]): The
                  authorization credentials to attach to requests. These
                  credentials identify this 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 optional list of scopes needed for this
                  service. These are only used when credentials are not specified and
                  are passed to :func:`google.auth.default`.
              quota_project_id (Optional[str]): An optional project to use for billing
                  and quota.
              kwargs (Optional[dict]): Keyword arguments, which are passed to the
                  channel creation.
          Returns:
              grpc.Channel: A gRPC channel object.
  
          Raises:
              google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
                and ``credentials_file`` are passed.
          """
  
          return grpc_helpers.create_channel(
              host,
              credentials=credentials,
              credentials_file=credentials_file,
              quota_project_id=quota_project_id,
              default_scopes=cls.AUTH_SCOPES,
              scopes=scopes,
              default_host=cls.DEFAULT_HOST,
              **kwargs,
          )
  
      @property
      def grpc_channel(self) -> grpc.Channel:
          """Return the channel designed to connect to this service.
          """
          return self._grpc_channel
  
      @property
      def operations_client(self) -> operations_v1.OperationsClient:
          """Create the client designed to process long-running operations.
  
          This property caches on the instance; repeated calls return the same
          client.
          """
          # Sanity check: Only create a new client if we do not already have one.
          if self._operations_client is None:
              self._operations_client = operations_v1.OperationsClient(self.grpc_channel)
  
          # Return the client from cache.
          return self._operations_client
  
      @property
      def get_google_service_account(
          self,
      ) -> Callable[
          [transfer.GetGoogleServiceAccountRequest], transfer_types.GoogleServiceAccount
      ]:
          r"""Return a callable for the get google service account method over gRPC.
  
          Returns the Google service account that is used by
          Storage Transfer Service to access buckets in the
          project where transfers run or in other projects. Each
          Google service account is associated with one Google
          Cloud Platform Console project. Users should add this
          service account to the Google Cloud Storage bucket ACLs
          to grant access to Storage Transfer Service. This
          service account is created and owned by Storage Transfer
          Service and can only be used by Storage Transfer
          Service.
  
          Returns:
              Callable[[~.GetGoogleServiceAccountRequest],
                      ~.GoogleServiceAccount]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "get_google_service_account" not in self._stubs:
              self._stubs["get_google_service_account"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/GetGoogleServiceAccount",
                  request_serializer=transfer.GetGoogleServiceAccountRequest.serialize,
                  response_deserializer=transfer_types.GoogleServiceAccount.deserialize,
              )
          return self._stubs["get_google_service_account"]
  
      @property
      def create_transfer_job(
          self,
      ) -> Callable[[transfer.CreateTransferJobRequest], transfer_types.TransferJob]:
          r"""Return a callable for the create transfer job method over gRPC.
  
          Creates a transfer job that runs periodically.
  
          Returns:
              Callable[[~.CreateTransferJobRequest],
                      ~.TransferJob]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "create_transfer_job" not in self._stubs:
              self._stubs["create_transfer_job"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/CreateTransferJob",
                  request_serializer=transfer.CreateTransferJobRequest.serialize,
                  response_deserializer=transfer_types.TransferJob.deserialize,
              )
          return self._stubs["create_transfer_job"]
  
      @property
      def update_transfer_job(
          self,
      ) -> Callable[[transfer.UpdateTransferJobRequest], transfer_types.TransferJob]:
          r"""Return a callable for the update transfer job method over gRPC.
  
          Updates a transfer job. Updating a job's transfer spec does not
          affect transfer operations that are running already.
  
          **Note:** The job's
          [status][google.storagetransfer.v1.TransferJob.status] field can
          be modified using this RPC (for example, to set a job's status
          to
          [DELETED][google.storagetransfer.v1.TransferJob.Status.DELETED],
          [DISABLED][google.storagetransfer.v1.TransferJob.Status.DISABLED],
          or
          [ENABLED][google.storagetransfer.v1.TransferJob.Status.ENABLED]).
  
          Returns:
              Callable[[~.UpdateTransferJobRequest],
                      ~.TransferJob]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "update_transfer_job" not in self._stubs:
              self._stubs["update_transfer_job"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/UpdateTransferJob",
                  request_serializer=transfer.UpdateTransferJobRequest.serialize,
                  response_deserializer=transfer_types.TransferJob.deserialize,
              )
          return self._stubs["update_transfer_job"]
  
      @property
      def get_transfer_job(
          self,
      ) -> Callable[[transfer.GetTransferJobRequest], transfer_types.TransferJob]:
          r"""Return a callable for the get transfer job method over gRPC.
  
          Gets a transfer job.
  
          Returns:
              Callable[[~.GetTransferJobRequest],
                      ~.TransferJob]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "get_transfer_job" not in self._stubs:
              self._stubs["get_transfer_job"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/GetTransferJob",
                  request_serializer=transfer.GetTransferJobRequest.serialize,
                  response_deserializer=transfer_types.TransferJob.deserialize,
              )
          return self._stubs["get_transfer_job"]
  
      @property
      def list_transfer_jobs(
          self,
      ) -> Callable[
          [transfer.ListTransferJobsRequest], transfer.ListTransferJobsResponse
      ]:
          r"""Return a callable for the list transfer jobs method over gRPC.
  
          Lists transfer jobs.
  
          Returns:
              Callable[[~.ListTransferJobsRequest],
                      ~.ListTransferJobsResponse]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "list_transfer_jobs" not in self._stubs:
              self._stubs["list_transfer_jobs"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/ListTransferJobs",
                  request_serializer=transfer.ListTransferJobsRequest.serialize,
                  response_deserializer=transfer.ListTransferJobsResponse.deserialize,
              )
          return self._stubs["list_transfer_jobs"]
  
      @property
      def pause_transfer_operation(
          self,
      ) -> Callable[[transfer.PauseTransferOperationRequest], empty_pb2.Empty]:
          r"""Return a callable for the pause transfer operation method over gRPC.
  
          Pauses a transfer operation.
  
          Returns:
              Callable[[~.PauseTransferOperationRequest],
                      ~.Empty]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "pause_transfer_operation" not in self._stubs:
              self._stubs["pause_transfer_operation"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/PauseTransferOperation",
                  request_serializer=transfer.PauseTransferOperationRequest.serialize,
                  response_deserializer=empty_pb2.Empty.FromString,
              )
          return self._stubs["pause_transfer_operation"]
  
      @property
      def resume_transfer_operation(
          self,
      ) -> Callable[[transfer.ResumeTransferOperationRequest], empty_pb2.Empty]:
          r"""Return a callable for the resume transfer operation method over gRPC.
  
          Resumes a transfer operation that is paused.
  
          Returns:
              Callable[[~.ResumeTransferOperationRequest],
                      ~.Empty]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "resume_transfer_operation" not in self._stubs:
              self._stubs["resume_transfer_operation"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/ResumeTransferOperation",
                  request_serializer=transfer.ResumeTransferOperationRequest.serialize,
                  response_deserializer=empty_pb2.Empty.FromString,
              )
          return self._stubs["resume_transfer_operation"]
  
      @property
      def run_transfer_job(
          self,
      ) -> Callable[[transfer.RunTransferJobRequest], operations_pb2.Operation]:
          r"""Return a callable for the run transfer job method over gRPC.
  
          Attempts to start a new TransferOperation for the
          current TransferJob. A TransferJob has a maximum of one
          active TransferOperation. If this method is called while
          a TransferOperation is active, an error wil be returned.
  
          Returns:
              Callable[[~.RunTransferJobRequest],
                      ~.Operation]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "run_transfer_job" not in self._stubs:
              self._stubs["run_transfer_job"] = self.grpc_channel.unary_unary(
                  "/google.storagetransfer.v1.StorageTransferService/RunTransferJob",
                  request_serializer=transfer.RunTransferJobRequest.serialize,
                  response_deserializer=operations_pb2.Operation.FromString,
              )
          return self._stubs["run_transfer_job"]
  
      def close(self):
          self.grpc_channel.close()
  
  
  __all__ = ("StorageTransferServiceGrpcTransport",)
  