storage.py 文件源码

def __init__(self, **kwargs):
        """
        Initializes object for interacting with Google Cloud Storage API.

        |  By default, Application Default Credentials are used.
        |  If gcloud SDK isn't installed, credential files have to be specified using the kwargs *json_credentials_path* and *client_id*.

        :keyword max_retries: Argument specified with each API call to natively handle retryable errors.
        :type max_retries: integer
        :keyword chunksize: Upload/Download chunk size
        :type chunksize: integer
        :keyword client_secret_path: File path for client secret JSON file. Only required if credentials are invalid or unavailable.
        :keyword json_credentials_path: File path for automatically generated credentials.
        :keyword client_id: Credentials are stored as a key-value pair per client_id to facilitate multiple clients using the same credentials file. For simplicity, using one's email address is sufficient.
        """

        self._service = get_service('storage', **kwargs)

        self._max_retries = kwargs.get('max_retries', 3)

        # Number of bytes to send/receive in each request.
        self._chunksize = kwargs.get('chunksize', 2 * 1024 * 1024)

        # Retry transport and file IO errors.
        self._RETRYABLE_ERRORS = (HttpLib2Error, IOError)