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path: root/build/scripts/fetch_from_mds.py
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import os
import sys
import logging
import argparse

import fetch_from

MDS_PREFIX = "https://storage.yandex-team.ru/get-devtools/"


def parse_args():
    parser = argparse.ArgumentParser()
    fetch_from.add_common_arguments(parser)

    parser.add_argument('--key', required=True)

    return parser.parse_args()


def fetch(key):
    parts = key.split("/")
    if len(parts) != 3:
        raise ValueError("Invalid MDS key '{}'".format(key))

    _, sha1, file_name = parts

    fetched_file = fetch_from.fetch_url(MDS_PREFIX + key, False, file_name, expected_sha1=sha1)

    return fetched_file, file_name


def main(args):
    fetched_file, resource_file_name = fetch(args.key)

    fetch_from.process(fetched_file, resource_file_name, args)


if __name__ == '__main__':
    args = parse_args()
    fetch_from.setup_logging(args, os.path.basename(__file__)) 

    try:
        main(args)
    except Exception as e:
        logging.exception(e)
        print >>sys.stderr, open(args.abs_log_path).read()
        sys.stderr.flush()

        import error
        sys.exit(error.ExitCodes.INFRASTRUCTURE_ERROR if fetch_from.is_temporary(e) else 1)