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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.
#
from typing import Callable, Dict, Optional, Sequence, Tuple
from google.api_core import grpc_helpers # type: ignore
from google.api_core import gapic_v1 # type: ignore
from google import auth # type: ignore
from google.auth import credentials # type: ignore
from google.auth.transport.grpc import SslCredentials # type: ignore
import grpc # type: ignore
from google.cloud.dataproc_v1.types import autoscaling_policies
from google.protobuf import empty_pb2 as empty # type: ignore
from .base import AutoscalingPolicyServiceTransport, DEFAULT_CLIENT_INFO
class AutoscalingPolicyServiceGrpcTransport(AutoscalingPolicyServiceTransport):
"""gRPC backend transport for AutoscalingPolicyService.
The API interface for managing autoscaling policies in the
Dataproc API.
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 = "dataproc.googleapis.com",
credentials: 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,
quota_project_id: Optional[str] = None,
client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
) -> 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]): 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]]]): 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.
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.
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.
"""
if channel:
# Sanity check: Ensure that channel and credentials are not both
# provided.
credentials = False
# If a channel was explicitly provided, set it.
self._grpc_channel = channel
elif api_mtls_endpoint:
host = (
api_mtls_endpoint
if ":" in api_mtls_endpoint
else api_mtls_endpoint + ":443"
)
if credentials is None:
credentials, _ = auth.default(
scopes=self.AUTH_SCOPES, quota_project_id=quota_project_id
)
# Create SSL credentials with client_cert_source or application
# default SSL credentials.
if client_cert_source:
cert, key = client_cert_source()
ssl_credentials = grpc.ssl_channel_credentials(
certificate_chain=cert, private_key=key
)
else:
ssl_credentials = SslCredentials().ssl_credentials
# create a new channel. The provided one is ignored.
self._grpc_channel = type(self).create_channel(
host,
credentials=credentials,
credentials_file=credentials_file,
ssl_credentials=ssl_credentials,
scopes=scopes or self.AUTH_SCOPES,
quota_project_id=quota_project_id,
)
self._stubs = {} # type: Dict[str, Callable]
# Run the base constructor.
super().__init__(
host=host,
credentials=credentials,
credentials_file=credentials_file,
scopes=scopes or self.AUTH_SCOPES,
quota_project_id=quota_project_id,
client_info=client_info,
)
@classmethod
def create_channel(
cls,
host: str = "dataproc.googleapis.com",
credentials: 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:
address (Optionsl[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.
"""
scopes = scopes or cls.AUTH_SCOPES
return grpc_helpers.create_channel(
host,
credentials=credentials,
credentials_file=credentials_file,
scopes=scopes,
quota_project_id=quota_project_id,
**kwargs,
)
@property
def grpc_channel(self) -> grpc.Channel:
"""Create the channel designed to connect to this service.
This property caches on the instance; repeated calls return
the same channel.
"""
# Sanity check: Only create a new channel if we do not already
# have one.
if not hasattr(self, "_grpc_channel"):
self._grpc_channel = self.create_channel(
self._host, credentials=self._credentials,
)
# Return the channel from cache.
return self._grpc_channel
@property
def create_autoscaling_policy(
self,
) -> Callable[
[autoscaling_policies.CreateAutoscalingPolicyRequest],
autoscaling_policies.AutoscalingPolicy,
]:
r"""Return a callable for the create autoscaling policy method over gRPC.
Creates new autoscaling policy.
Returns:
Callable[[~.CreateAutoscalingPolicyRequest],
~.AutoscalingPolicy]:
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_autoscaling_policy" not in self._stubs:
self._stubs["create_autoscaling_policy"] = self.grpc_channel.unary_unary(
"/google.cloud.dataproc.v1.AutoscalingPolicyService/CreateAutoscalingPolicy",
request_serializer=autoscaling_policies.CreateAutoscalingPolicyRequest.serialize,
response_deserializer=autoscaling_policies.AutoscalingPolicy.deserialize,
)
return self._stubs["create_autoscaling_policy"]
@property
def update_autoscaling_policy(
self,
) -> Callable[
[autoscaling_policies.UpdateAutoscalingPolicyRequest],
autoscaling_policies.AutoscalingPolicy,
]:
r"""Return a callable for the update autoscaling policy method over gRPC.
Updates (replaces) autoscaling policy.
Disabled check for update_mask, because all updates will be full
replacements.
Returns:
Callable[[~.UpdateAutoscalingPolicyRequest],
~.AutoscalingPolicy]:
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_autoscaling_policy" not in self._stubs:
self._stubs["update_autoscaling_policy"] = self.grpc_channel.unary_unary(
"/google.cloud.dataproc.v1.AutoscalingPolicyService/UpdateAutoscalingPolicy",
request_serializer=autoscaling_policies.UpdateAutoscalingPolicyRequest.serialize,
response_deserializer=autoscaling_policies.AutoscalingPolicy.deserialize,
)
return self._stubs["update_autoscaling_policy"]
@property
def get_autoscaling_policy(
self,
) -> Callable[
[autoscaling_policies.GetAutoscalingPolicyRequest],
autoscaling_policies.AutoscalingPolicy,
]:
r"""Return a callable for the get autoscaling policy method over gRPC.
Retrieves autoscaling policy.
Returns:
Callable[[~.GetAutoscalingPolicyRequest],
~.AutoscalingPolicy]:
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_autoscaling_policy" not in self._stubs:
self._stubs["get_autoscaling_policy"] = self.grpc_channel.unary_unary(
"/google.cloud.dataproc.v1.AutoscalingPolicyService/GetAutoscalingPolicy",
request_serializer=autoscaling_policies.GetAutoscalingPolicyRequest.serialize,
response_deserializer=autoscaling_policies.AutoscalingPolicy.deserialize,
)
return self._stubs["get_autoscaling_policy"]
@property
def list_autoscaling_policies(
self,
) -> Callable[
[autoscaling_policies.ListAutoscalingPoliciesRequest],
autoscaling_policies.ListAutoscalingPoliciesResponse,
]:
r"""Return a callable for the list autoscaling policies method over gRPC.
Lists autoscaling policies in the project.
Returns:
Callable[[~.ListAutoscalingPoliciesRequest],
~.ListAutoscalingPoliciesResponse]:
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_autoscaling_policies" not in self._stubs:
self._stubs["list_autoscaling_policies"] = self.grpc_channel.unary_unary(
"/google.cloud.dataproc.v1.AutoscalingPolicyService/ListAutoscalingPolicies",
request_serializer=autoscaling_policies.ListAutoscalingPoliciesRequest.serialize,
response_deserializer=autoscaling_policies.ListAutoscalingPoliciesResponse.deserialize,
)
return self._stubs["list_autoscaling_policies"]
@property
def delete_autoscaling_policy(
self,
) -> Callable[[autoscaling_policies.DeleteAutoscalingPolicyRequest], empty.Empty]:
r"""Return a callable for the delete autoscaling policy method over gRPC.
Deletes an autoscaling policy. It is an error to
delete an autoscaling policy that is in use by one or
more clusters.
Returns:
Callable[[~.DeleteAutoscalingPolicyRequest],
~.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_autoscaling_policy" not in self._stubs:
self._stubs["delete_autoscaling_policy"] = self.grpc_channel.unary_unary(
"/google.cloud.dataproc.v1.AutoscalingPolicyService/DeleteAutoscalingPolicy",
request_serializer=autoscaling_policies.DeleteAutoscalingPolicyRequest.serialize,
response_deserializer=empty.Empty.FromString,
)
return self._stubs["delete_autoscaling_policy"]
__all__ = ("AutoscalingPolicyServiceGrpcTransport",)