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grpc.py
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grpc.py
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# -*- 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 # type: ignore
from google.api_core import gapic_v1 # type: ignore
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.bigquery_datatransfer_v1.types import datatransfer
from google.cloud.bigquery_datatransfer_v1.types import transfer
from google.protobuf import empty_pb2 # type: ignore
from .base import DataTransferServiceTransport, DEFAULT_CLIENT_INFO
class DataTransferServiceGrpcTransport(DataTransferServiceTransport):
"""gRPC backend transport for DataTransferService.
The Google BigQuery Data Transfer Service API enables
BigQuery users to configure the transfer of their data from
other Google Products into BigQuery. This service contains
methods that are end user exposed. It backs up the frontend.
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 = "bigquerydatatransfer.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 applicatin 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 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 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] = {}
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 = "bigquerydatatransfer.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 get_data_source(
self,
) -> Callable[[datatransfer.GetDataSourceRequest], datatransfer.DataSource]:
r"""Return a callable for the get data source method over gRPC.
Retrieves a supported data source and returns its
settings, which can be used for UI rendering.
Returns:
Callable[[~.GetDataSourceRequest],
~.DataSource]:
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_data_source" not in self._stubs:
self._stubs["get_data_source"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/GetDataSource",
request_serializer=datatransfer.GetDataSourceRequest.serialize,
response_deserializer=datatransfer.DataSource.deserialize,
)
return self._stubs["get_data_source"]
@property
def list_data_sources(
self,
) -> Callable[
[datatransfer.ListDataSourcesRequest], datatransfer.ListDataSourcesResponse
]:
r"""Return a callable for the list data sources method over gRPC.
Lists supported data sources and returns their
settings, which can be used for UI rendering.
Returns:
Callable[[~.ListDataSourcesRequest],
~.ListDataSourcesResponse]:
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_data_sources" not in self._stubs:
self._stubs["list_data_sources"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/ListDataSources",
request_serializer=datatransfer.ListDataSourcesRequest.serialize,
response_deserializer=datatransfer.ListDataSourcesResponse.deserialize,
)
return self._stubs["list_data_sources"]
@property
def create_transfer_config(
self,
) -> Callable[[datatransfer.CreateTransferConfigRequest], transfer.TransferConfig]:
r"""Return a callable for the create transfer config method over gRPC.
Creates a new data transfer configuration.
Returns:
Callable[[~.CreateTransferConfigRequest],
~.TransferConfig]:
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_config" not in self._stubs:
self._stubs["create_transfer_config"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/CreateTransferConfig",
request_serializer=datatransfer.CreateTransferConfigRequest.serialize,
response_deserializer=transfer.TransferConfig.deserialize,
)
return self._stubs["create_transfer_config"]
@property
def update_transfer_config(
self,
) -> Callable[[datatransfer.UpdateTransferConfigRequest], transfer.TransferConfig]:
r"""Return a callable for the update transfer config method over gRPC.
Updates a data transfer configuration.
All fields must be set, even if they are not updated.
Returns:
Callable[[~.UpdateTransferConfigRequest],
~.TransferConfig]:
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_config" not in self._stubs:
self._stubs["update_transfer_config"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/UpdateTransferConfig",
request_serializer=datatransfer.UpdateTransferConfigRequest.serialize,
response_deserializer=transfer.TransferConfig.deserialize,
)
return self._stubs["update_transfer_config"]
@property
def delete_transfer_config(
self,
) -> Callable[[datatransfer.DeleteTransferConfigRequest], empty_pb2.Empty]:
r"""Return a callable for the delete transfer config method over gRPC.
Deletes a data transfer configuration,
including any associated transfer runs and logs.
Returns:
Callable[[~.DeleteTransferConfigRequest],
~.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 "delete_transfer_config" not in self._stubs:
self._stubs["delete_transfer_config"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/DeleteTransferConfig",
request_serializer=datatransfer.DeleteTransferConfigRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["delete_transfer_config"]
@property
def get_transfer_config(
self,
) -> Callable[[datatransfer.GetTransferConfigRequest], transfer.TransferConfig]:
r"""Return a callable for the get transfer config method over gRPC.
Returns information about a data transfer config.
Returns:
Callable[[~.GetTransferConfigRequest],
~.TransferConfig]:
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_config" not in self._stubs:
self._stubs["get_transfer_config"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/GetTransferConfig",
request_serializer=datatransfer.GetTransferConfigRequest.serialize,
response_deserializer=transfer.TransferConfig.deserialize,
)
return self._stubs["get_transfer_config"]
@property
def list_transfer_configs(
self,
) -> Callable[
[datatransfer.ListTransferConfigsRequest],
datatransfer.ListTransferConfigsResponse,
]:
r"""Return a callable for the list transfer configs method over gRPC.
Returns information about all transfer configs owned
by a project in the specified location.
Returns:
Callable[[~.ListTransferConfigsRequest],
~.ListTransferConfigsResponse]:
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_configs" not in self._stubs:
self._stubs["list_transfer_configs"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/ListTransferConfigs",
request_serializer=datatransfer.ListTransferConfigsRequest.serialize,
response_deserializer=datatransfer.ListTransferConfigsResponse.deserialize,
)
return self._stubs["list_transfer_configs"]
@property
def schedule_transfer_runs(
self,
) -> Callable[
[datatransfer.ScheduleTransferRunsRequest],
datatransfer.ScheduleTransferRunsResponse,
]:
r"""Return a callable for the schedule transfer runs method over gRPC.
Creates transfer runs for a time range [start_time, end_time].
For each date - or whatever granularity the data source supports
- in the range, one transfer run is created. Note that runs are
created per UTC time in the time range. DEPRECATED: use
StartManualTransferRuns instead.
Returns:
Callable[[~.ScheduleTransferRunsRequest],
~.ScheduleTransferRunsResponse]:
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 "schedule_transfer_runs" not in self._stubs:
self._stubs["schedule_transfer_runs"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/ScheduleTransferRuns",
request_serializer=datatransfer.ScheduleTransferRunsRequest.serialize,
response_deserializer=datatransfer.ScheduleTransferRunsResponse.deserialize,
)
return self._stubs["schedule_transfer_runs"]
@property
def start_manual_transfer_runs(
self,
) -> Callable[
[datatransfer.StartManualTransferRunsRequest],
datatransfer.StartManualTransferRunsResponse,
]:
r"""Return a callable for the start manual transfer runs method over gRPC.
Start manual transfer runs to be executed now with schedule_time
equal to current time. The transfer runs can be created for a
time range where the run_time is between start_time (inclusive)
and end_time (exclusive), or for a specific run_time.
Returns:
Callable[[~.StartManualTransferRunsRequest],
~.StartManualTransferRunsResponse]:
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 "start_manual_transfer_runs" not in self._stubs:
self._stubs["start_manual_transfer_runs"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/StartManualTransferRuns",
request_serializer=datatransfer.StartManualTransferRunsRequest.serialize,
response_deserializer=datatransfer.StartManualTransferRunsResponse.deserialize,
)
return self._stubs["start_manual_transfer_runs"]
@property
def get_transfer_run(
self,
) -> Callable[[datatransfer.GetTransferRunRequest], transfer.TransferRun]:
r"""Return a callable for the get transfer run method over gRPC.
Returns information about the particular transfer
run.
Returns:
Callable[[~.GetTransferRunRequest],
~.TransferRun]:
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_run" not in self._stubs:
self._stubs["get_transfer_run"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/GetTransferRun",
request_serializer=datatransfer.GetTransferRunRequest.serialize,
response_deserializer=transfer.TransferRun.deserialize,
)
return self._stubs["get_transfer_run"]
@property
def delete_transfer_run(
self,
) -> Callable[[datatransfer.DeleteTransferRunRequest], empty_pb2.Empty]:
r"""Return a callable for the delete transfer run method over gRPC.
Deletes the specified transfer run.
Returns:
Callable[[~.DeleteTransferRunRequest],
~.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 "delete_transfer_run" not in self._stubs:
self._stubs["delete_transfer_run"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/DeleteTransferRun",
request_serializer=datatransfer.DeleteTransferRunRequest.serialize,
response_deserializer=empty_pb2.Empty.FromString,
)
return self._stubs["delete_transfer_run"]
@property
def list_transfer_runs(
self,
) -> Callable[
[datatransfer.ListTransferRunsRequest], datatransfer.ListTransferRunsResponse
]:
r"""Return a callable for the list transfer runs method over gRPC.
Returns information about running and completed jobs.
Returns:
Callable[[~.ListTransferRunsRequest],
~.ListTransferRunsResponse]:
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_runs" not in self._stubs:
self._stubs["list_transfer_runs"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/ListTransferRuns",
request_serializer=datatransfer.ListTransferRunsRequest.serialize,
response_deserializer=datatransfer.ListTransferRunsResponse.deserialize,
)
return self._stubs["list_transfer_runs"]
@property
def list_transfer_logs(
self,
) -> Callable[
[datatransfer.ListTransferLogsRequest], datatransfer.ListTransferLogsResponse
]:
r"""Return a callable for the list transfer logs method over gRPC.
Returns user facing log messages for the data
transfer run.
Returns:
Callable[[~.ListTransferLogsRequest],
~.ListTransferLogsResponse]:
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_logs" not in self._stubs:
self._stubs["list_transfer_logs"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/ListTransferLogs",
request_serializer=datatransfer.ListTransferLogsRequest.serialize,
response_deserializer=datatransfer.ListTransferLogsResponse.deserialize,
)
return self._stubs["list_transfer_logs"]
@property
def check_valid_creds(
self,
) -> Callable[
[datatransfer.CheckValidCredsRequest], datatransfer.CheckValidCredsResponse
]:
r"""Return a callable for the check valid creds method over gRPC.
Returns true if valid credentials exist for the given
data source and requesting user.
Some data sources doesn't support service account, so we
need to talk to them on behalf of the end user. This API
just checks whether we have OAuth token for the
particular user, which is a pre-requisite before user
can create a transfer config.
Returns:
Callable[[~.CheckValidCredsRequest],
~.CheckValidCredsResponse]:
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 "check_valid_creds" not in self._stubs:
self._stubs["check_valid_creds"] = self.grpc_channel.unary_unary(
"/google.cloud.bigquery.datatransfer.v1.DataTransferService/CheckValidCreds",
request_serializer=datatransfer.CheckValidCredsRequest.serialize,
response_deserializer=datatransfer.CheckValidCredsResponse.deserialize,
)
return self._stubs["check_valid_creds"]
__all__ = ("DataTransferServiceGrpcTransport",)