Get a specific entry on juju get

juju-get-grep.py

#!/usr/bin/env python
"""
Usage:
$ juju get-grep service config_entry
"""
__author__ == "Jorge Niedbalski R. <jorge.niedbalski@canonical.com>"

import subprocess
import sys
import yaml
import pprint


def juju_get(service, juju_env=None):
    cmd = ['juju', 'get', service]
    if juju_env:
        cmd.append(['-e', juju_env])
    status_raw = subprocess.check_output(cmd)
    return yaml.safe_load(status_raw)


def main():
    if not len(sys.argv) >= 2:
        print >> sys.stderr, __doc__
        sys.exit(-1)

    (service, entry) = (sys.argv[1], sys.argv[2])
    pprint.pprint(juju_get(service)['settings'].get(entry))


if __name__ == "__main__":
    main()