charm/openvim/interface-openvim/provides.py

##
# Copyright 2016
# This file is part of openvim
#
# Licensed 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.
#
##

from charmhelpers.core import hookenv
from charms.reactive import hook
from charms.reactive import RelationBase
from charms.reactive import scopes


class OpenVimProvides(RelationBase):
    scope = scopes.GLOBAL

    @hook('{provides:openvim}-relation-{joined,changed}')
    def changed(self):
        self.set_state('{relation_name}.available')

    @hook('{provides:openvim}-relation-{broken,departed}')
    def broken(self):
        self.remove_state('{relation_name}.available')

    def configure(self, port, user):
        relation_info = {
            'hostname': hookenv.unit_get('private-address'),
            'port': port,
            'user': user,
        }
        self.set_remote(**relation_info)