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#!/usr/bin/env python3
import argparse
import json
import sys
from distutils.version import StrictVersion
def main(current, releases_json):
try:
version = StrictVersion(current)
except ValueError:
print("Version number '{}' isn't valid".format(current))
sys.exit(1)
releases = json.loads(releases_json)
latest_release = releases["releases"][0]["id"]
if version != latest_release:
print(
"Version number '{}' doesn't match latest release {}".format(
current, latest_release
)
)
sys.exit(1)
print("Version number '{}' is latest release!".format(current))
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description="""
Exit with code 0 if the given version matches the latest one
fron the list of releases found in releases_json. Primary use
is to check whether the current version can be safely pushed
as the latest one on the docker Hub.
"""
)
parser.add_argument("current", help="Current version")
parser.add_argument("releases_json", type=argparse.FileType("r"))
args = parser.parse_args()
main(args.current, args.releases_json.read())