#!/usr/bin/env python
#
# get-service-info - returns requested service info
#
# Copyright 2012 Canonical Ltd. All Rights Reserved
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import yaml
import sys
from subprocess import Popen, PIPE


def main():
    if len(sys.argv) < 3:
        print "usage: get-service-info service attribute"
        sys.exit(1)
    d = yaml.safe_load(Popen(['juju','status'],stdout=PIPE).stdout)
    srv = d.get("services", {}).get(sys.argv[1])
    if srv is None:
        return
    units = srv.get("units", {})
    if units is None:
        return
    for item in units.items():
        print "%s:%s" % (item[0],item[1].get(sys.argv[2]))
    if item is None:
        return

if __name__ == "__main__":
    main()
