def parse_args()

in python/dataproc_templates/elasticsearch/elasticsearch_to_gcs.py [0:0]
96 lines of code
7 McCabe index (conditional complexity)

    def parse_args(args: Optional[Sequence[str]] = None) -> Dict[str, Any]:
        parser: argparse.ArgumentParser = argparse.ArgumentParser()

        parser.add_argument(
            f'--{constants.ES_GCS_INPUT_NODE}',
            dest=constants.ES_GCS_INPUT_NODE,
            required=True,
            help='Elasticsearch Node Uri'
        )
        parser.add_argument(
            f'--{constants.ES_GCS_INPUT_INDEX}',
            dest=constants.ES_GCS_INPUT_INDEX,
            required=True,
            help='Elasticsearch Index Name'
        )
        parser.add_argument(
            f'--{constants.ES_GCS_NODE_USER}',
            dest=constants.ES_GCS_NODE_USER,
            help='Elasticsearch Node User'
        )
        parser.add_argument(
            f'--{constants.ES_GCS_NODE_PASSWORD}',
            dest=constants.ES_GCS_NODE_PASSWORD,
            help='Elasticsearch Node Password'
        )
        parser.add_argument(
            f'--{constants.ES_GCS_NODE_API_KEY}',
            dest=constants.ES_GCS_NODE_API_KEY,
            help='Elasticsearch Node API Key'
        )

        add_es_spark_connector_options(parser, constants.get_es_spark_connector_input_options("es.gcs.input."))

        parser.add_argument(
            f'--{constants.ES_GCS_FLATTEN_STRUCT}',
            dest=constants.ES_GCS_FLATTEN_STRUCT,
            action='store_true',
            required=False,
            help='Flatten the struct fields'
        )
        parser.add_argument(
            f'--{constants.ES_GCS_FLATTEN_ARRAY}',
            dest=constants.ES_GCS_FLATTEN_ARRAY,
            action='store_true',
            required=False,
            help=(
                'Flatten the n-D array fields to 1-D array fields,'
                f' it needs {constants.ES_GCS_FLATTEN_STRUCT} argument to be passed'
            )
        )
        parser.add_argument(
            f'--{constants.ES_GCS_OUTPUT_FORMAT}',
            dest=constants.ES_GCS_OUTPUT_FORMAT,
            required=True,
            help='Output file format (one of: avro,parquet,csv,json)',
            choices=[
                constants.FORMAT_AVRO,
                constants.FORMAT_PRQT,
                constants.FORMAT_CSV,
                constants.FORMAT_JSON
            ]
        )
        parser.add_argument(
            f'--{constants.ES_GCS_OUTPUT_LOCATION}',
            dest=constants.ES_GCS_OUTPUT_LOCATION,
            required=True,
            help='Cloud Storage location for output files'
        )
        parser.add_argument(
            f'--{constants.ES_GCS_OUTPUT_MODE}',
            dest=constants.ES_GCS_OUTPUT_MODE,
            required=False,
            default=constants.OUTPUT_MODE_APPEND,
            help=(
                'Output write mode '
                '(one of: append,overwrite,ignore,errorifexists) '
                '(Defaults to append)'
            ),
            choices=[
                constants.OUTPUT_MODE_OVERWRITE,
                constants.OUTPUT_MODE_APPEND,
                constants.OUTPUT_MODE_IGNORE,
                constants.OUTPUT_MODE_ERRORIFEXISTS
            ]
        )

        add_spark_options(parser, constants.get_csv_output_spark_options("es.gcs.output."))

        known_args: argparse.Namespace
        known_args, _ = parser.parse_known_args(args)

        if (not getattr(known_args, constants.ES_GCS_NODE_API_KEY)
            and (not getattr(known_args, constants.ES_GCS_NODE_USER)
            or not getattr(known_args, constants.ES_GCS_NODE_PASSWORD))):

            sys.exit("ArgumentParser Error: Either of es.gcs.input.user and es.gcs.input.password "
                        + "OR es.gcs.input.api.key needs to be provided as argument to read data from Elasticsearch")

        elif (getattr(known_args, constants.ES_GCS_NODE_API_KEY)
            and (getattr(known_args, constants.ES_GCS_NODE_USER)
            or getattr(known_args, constants.ES_GCS_NODE_PASSWORD))):

            sys.exit("ArgumentParser Error: Both es.gcs.input.user and es.gcs.input.password "
                        + "AND es.gcs.input.api.key cannot be provided as arguments at the same time.")

        return vars(known_args)