hadoop/dev-support/docker/pkg-resolver/check_platform.py

#!/usr/bin/env python3

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# or more contributor license agreements.  See the NOTICE file
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# regarding copyright ownership.  The ASF licenses this file
# to you 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
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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"""
Checks whether the given platform is supported for building Apache Hadoop
"""

import json
import sys


def get_platforms():
    """
    :return: A list of the supported platforms managed by pkg-resolver.
    """

    with open('pkg-resolver/platforms.json', encoding='utf-8', mode='r') as platforms_file:
        return json.loads(platforms_file.read())


def is_supported_platform(platform):
    """
    :param platform: The name of the platform
    :return: Whether the platform is supported
    """
    return platform in get_platforms()


if __name__ == '__main__':
    if len(sys.argv) != 2:
        print('ERROR: Expecting 1 argument, {} were provided'.format(len(sys.argv) - 1),
              file=sys.stderr)
        sys.exit(1)

    sys.exit(0 if is_supported_platform(sys.argv[1]) else 1)