services/handlers/fetch_resources/config.py

# Copyright 2025 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
# 
#   https://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.

"""
Module to manage application configuration settings based on command-line
inputs.Utilizes `common.utils` for argument parsing.
"""

from argparse import ArgumentParser
from typing import Dict, Any
from common.utils import parse_common_args


def parse_service_args(parser: ArgumentParser) -> None:
    parser.add_argument(
        "-l",
        "--service-location",
        default="us-central1",
        type=str,
        help=(
            "The location/region where the service is running "
            "(default: 'us-central1')."
        ),
    )
    parser.add_argument(
        "-q",
        "--queue",
        default="resource-discovery",
        type=str,
        help=(
            "The name of the queue to use for resource discovery "
            "(default: 'resource-discovery')."
        ),
    )
    parser.add_argument(
        "-hn",
        "--handler-name",
        default="fetch-resources-handler",
        type=str,
        help=(
            "The name of the handler responsible for processing resources "
            "(default: 'fetch-resources-handler')."
        ),
    )


def get_application_config() -> Dict[str, Any]:
    """
    Combines common and service-specific arguments into a unified configuration.
    """
    parser = ArgumentParser(description="CLI for fetch resources service")

    parse_service_args(parser)
    parse_common_args(parser)

    args = parser.parse_args()

    if args.dataset_name is None:
        args.dataset_name = (
            "transfer_tooling_dry_run" if args.dry_run else "transfer_tooling"
        )

    return {
        "project_name": args.project,
        "dataset_name": args.dataset_name,
        "service_location": args.service_location,
        "queue": args.queue,
        "handler_name": args.handler_name,
        "dataset_location": args.dataset_location,
    }