#!/usr/local/sbin/charm-env python3

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys

from charmhelpers.core import hookenv
from charms.layer.bigtop_zookeeper import Zookeeper
from charms.reactive import is_state


def main():
    if not is_state('zookeeper.started'):
        hookenv.action_set({'outcome': 'failure'})
        hookenv.action_fail('Cannot restart: Zookeeper has not yet started!')
        sys.exit()

    hookenv.log("starting restart handler main.")
    hookenv.status_set('maintenance', 'restarting zookeeper')
    zookeeper = Zookeeper()
    zookeeper.install()
    hookenv.status_set('active', 'ready {}'.format(zookeeper.quorum_check()))


if __name__ == '__main__':
    main()
