58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
import argparse
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import subprocess
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import sys
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import time
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class NoMoreRetries(Exception):
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pass
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def normalize_limit(limit):
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if limit is not None:
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limit = int(limit)
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if limit < 1:
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raise ValueError('Limit must be >= 1, or None.')
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return limit
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def normalize_sleepy(sleepy):
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if sleepy is not None:
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sleepy = float(sleepy)
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if sleepy <= 0:
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raise ValueError('Sleep must be > 0, or None.')
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return sleepy
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def retry(command, limit, sleepy):
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limit = normalize_limit(limit)
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sleepy = normalize_sleepy(sleepy)
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status = 1
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while limit is None or limit > 0:
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status = subprocess.run(command, shell=True).returncode
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if status == 0:
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return
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print(f'{command} failed with status {status}.')
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if limit is not None:
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limit -= 1
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if sleepy is not None:
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time.sleep(sleepy)
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raise NoMoreRetries()
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def retry_argparse(args):
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return retry(
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command=args.command,
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limit=args.limit,
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sleepy=args.sleepy,
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)
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def main(argv):
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('command', nargs='+')
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parser.add_argument('--limit', dest='limit', type=int, default=None)
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parser.add_argument('--sleep', dest='sleepy', type=float, default=None)
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parser.set_defaults(func=retry_argparse)
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args = parser.parse_args(argv)
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return args.func(args)
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if __name__ == '__main__':
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raise SystemExit(main(sys.argv[1:]))
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