As of January 1, 2020 this library no longer supports Python 2 on the latest released version. Library versions released prior to that date will continue to be available. For more information please visit Python 2 support on Google Cloud.

Source code for google.api_core.client_options

# Copyright 2019 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
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

"""Client options class.

Client options provide a consistent interface for user options to be defined
across clients.

You can pass a client options object to a client.

.. code-block:: python

    from google.api_core.client_options import ClientOptions
    from import ImageAnnotatorClient

    def get_client_cert():
        # code to load client certificate and private key.
        return client_cert_bytes, client_private_key_bytes

    options = ClientOptions(api_endpoint="",

    client = ImageAnnotatorClient(client_options=options)

You can also pass a mapping object.

.. code-block:: python

    from import ImageAnnotatorClient

    client = ImageAnnotatorClient(
            "api_endpoint": "",
            "client_cert_source" : get_client_cert


[docs]class ClientOptions(object): """Client Options used to set options on clients. Args: api_endpoint (Optional[str]): The desired API endpoint, e.g., client_cert_source (Optional[Callable[[], (bytes, bytes)]]): A callback which returns client certificate bytes and private key bytes both in PEM format. ``client_cert_source`` and ``client_encrypted_cert_source`` are mutually exclusive. client_encrypted_cert_source (Optional[Callable[[], (str, str, bytes)]]): A callback which returns client certificate file path, encrypted private key file path, and the passphrase bytes.``client_cert_source`` and ``client_encrypted_cert_source`` are mutually exclusive. quota_project_id (Optional[str]): A project name that a client's quota belongs to. credentials_file (Optional[str]): A path to a file storing credentials. ``credentials_file` and ``api_key`` are mutually exclusive. scopes (Optional[Sequence[str]]): OAuth access token override scopes. api_key (Optional[str]): Google API key. ``credentials_file`` and ``api_key`` are mutually exclusive. api_audience (Optional[str]): The intended audience for the API calls to the service that will be set when using certain 3rd party authentication flows. Audience is typically a resource identifier. If not set, the service endpoint value will be used as a default. An example of a valid ``api_audience`` is: "". Raises: ValueError: If both ``client_cert_source`` and ``client_encrypted_cert_source`` are provided, or both ``credentials_file`` and ``api_key`` are provided. """ def __init__( self, api_endpoint=None, client_cert_source=None, client_encrypted_cert_source=None, quota_project_id=None, credentials_file=None, scopes=None, api_key=None, api_audience=None, ): if client_cert_source and client_encrypted_cert_source: raise ValueError( "client_cert_source and client_encrypted_cert_source are mutually exclusive" ) if api_key and credentials_file: raise ValueError("api_key and credentials_file are mutually exclusive") self.api_endpoint = api_endpoint self.client_cert_source = client_cert_source self.client_encrypted_cert_source = client_encrypted_cert_source self.quota_project_id = quota_project_id self.credentials_file = credentials_file self.scopes = scopes self.api_key = api_key self.api_audience = api_audience def __repr__(self): return "ClientOptions: " + repr(self.__dict__)
[docs]def from_dict(options): """Construct a client options object from a mapping object. Args: options ( A mapping object with client options. See the docstring for ClientOptions for details on valid arguments. """ client_options = ClientOptions() for key, value in options.items(): if hasattr(client_options, key): setattr(client_options, key, value) else: raise ValueError("ClientOptions does not accept an option '" + key + "'") return client_options