diff options
Diffstat (limited to 'google/api_core/operations_v1/transports/base.py')
| -rw-r--r-- | google/api_core/operations_v1/transports/base.py | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/google/api_core/operations_v1/transports/base.py b/google/api_core/operations_v1/transports/base.py new file mode 100644 index 0000000..460e646 --- /dev/null +++ b/google/api_core/operations_v1/transports/base.py @@ -0,0 +1,232 @@ +# -*- 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, Optional, Sequence, Union + +import pkg_resources + +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 +import google.auth # type: ignore +from google.auth import credentials as ga_credentials # type: ignore +from google.longrunning import operations_pb2 +from google.oauth2 import service_account # type: ignore +from google.protobuf import empty_pb2 # type: ignore + +try: + DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo( + gapic_version=pkg_resources.get_distribution( + "google.api_core.operations_v1", + ).version, + ) +except pkg_resources.DistributionNotFound: + DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo() + + +class OperationsTransport(abc.ABC): + """Abstract transport class for Operations.""" + + AUTH_SCOPES = () + + DEFAULT_HOST: str = "longrunning.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, + always_use_jwt_access: Optional[bool] = False, + **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. + always_use_jwt_access (Optional[bool]): Whether self signed JWT should + be used for service account credentials. + """ + # Save the hostname. Default to port 443 (HTTPS) if none is specified. + if ":" not in host: + host += ":443" + self._host = host + + scopes_kwargs = {"scopes": scopes, "default_scopes": self.AUTH_SCOPES} + + # Save the scopes. + self._scopes = 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 + ) + + # If the credentials are service account credentials, then always try to use self signed JWT. + if ( + always_use_jwt_access + and isinstance(credentials, service_account.Credentials) + and hasattr(service_account.Credentials, "with_always_use_jwt_access") + ): + credentials = credentials.with_always_use_jwt_access(True) + + # Save the credentials. + self._credentials = credentials + + def _prep_wrapped_messages(self, client_info): + # Precompute the wrapped methods. + self._wrapped_methods = { + self.list_operations: gapic_v1.method.wrap_method( + self.list_operations, + default_retry=retries.Retry( + initial=0.5, + maximum=10.0, + multiplier=2.0, + predicate=retries.if_exception_type( + core_exceptions.ServiceUnavailable, + ), + deadline=10.0, + ), + default_timeout=10.0, + client_info=client_info, + ), + self.get_operation: gapic_v1.method.wrap_method( + self.get_operation, + default_retry=retries.Retry( + initial=0.5, + maximum=10.0, + multiplier=2.0, + predicate=retries.if_exception_type( + core_exceptions.ServiceUnavailable, + ), + deadline=10.0, + ), + default_timeout=10.0, + client_info=client_info, + ), + self.delete_operation: gapic_v1.method.wrap_method( + self.delete_operation, + default_retry=retries.Retry( + initial=0.5, + maximum=10.0, + multiplier=2.0, + predicate=retries.if_exception_type( + core_exceptions.ServiceUnavailable, + ), + deadline=10.0, + ), + default_timeout=10.0, + client_info=client_info, + ), + self.cancel_operation: gapic_v1.method.wrap_method( + self.cancel_operation, + default_retry=retries.Retry( + initial=0.5, + maximum=10.0, + multiplier=2.0, + predicate=retries.if_exception_type( + core_exceptions.ServiceUnavailable, + ), + deadline=10.0, + ), + default_timeout=10.0, + client_info=client_info, + ), + } + + def close(self): + """Closes resources associated with the transport. + + .. warning:: + Only call this method if the transport is NOT shared + with other clients - this may cause errors in other clients! + """ + raise NotImplementedError() + + @property + def list_operations( + self, + ) -> Callable[ + [operations_pb2.ListOperationsRequest], + Union[ + operations_pb2.ListOperationsResponse, + Awaitable[operations_pb2.ListOperationsResponse], + ], + ]: + raise NotImplementedError() + + @property + def get_operation( + self, + ) -> Callable[ + [operations_pb2.GetOperationRequest], + Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]], + ]: + raise NotImplementedError() + + @property + def delete_operation( + self, + ) -> Callable[ + [operations_pb2.DeleteOperationRequest], + Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]], + ]: + raise NotImplementedError() + + @property + def cancel_operation( + self, + ) -> Callable[ + [operations_pb2.CancelOperationRequest], + Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]], + ]: + raise NotImplementedError() + + +__all__ = ("OperationsTransport",) |