def parse_args()

in tools/cloud_functions/gcs_event_based_ingest/backfill.py [0:0]
50 lines of code
1 McCabe index (conditional complexity)

def parse_args(args: List[str]) -> argparse.Namespace:
    """argument parser for backfill CLI"""
    parser = argparse.ArgumentParser(
        description="utility to backfill success file notifications "
        "or run the cloud function locally in concurrent threads.")

    parser.add_argument(
        "--gcs-path",
        "-p",
        help="GCS path (e.g. gs://bucket/prefix/to/search/)to search for "
        "existing _SUCCESS files",
        required=True,
    )

    parser.add_argument(
        "--mode",
        "-m",
        help="How to perform the backfill: LOCAL run cloud function main"
        " method locally (in concurrent threads) or NOTIFICATIONS just push"
        " notifications to Pub/Sub for a deployed version of the cloud function"
        " to pick up. Default is NOTIFICATIONS.",
        required=False,
        type=str.upper,
        choices=["LOCAL", "NOTIFICATIONS"],
        default="NOTIFICATIONS",
    )

    parser.add_argument(
        "--pubsub-topic",
        "--topic",
        "-t",
        help="Pub/Sub notifications topic to post notifications for. "
        "i.e. projects/{PROJECT_ID}/topics/{TOPIC_ID} "
        "Required if using NOTIFICATIONS mode.",
        required=False,
        default=None,
    )

    parser.add_argument(
        "--success-filename",
        "-f",
        help="Override the default success filename '_SUCCESS'",
        required=False,
        default="_SUCCESS",
    )

    parser.add_argument(
        "--destination-regex",
        "-r",
        help="Override the default destination regex for determining BigQuery"
        "destination based on information encoded in the GCS path of the"
        "success file",
        required=False,
        default=None,
    )
    return parser.parse_args(args)