Initial commit of interface

This commit is contained in:
Liam Young 2016-05-20 08:28:56 +00:00
commit 75b97e76c3
3 changed files with 60 additions and 0 deletions

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__init__.py Normal file
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name: openstack-ha
summary: Interface for peer relation
maintainer: OpenStack Charmers <openstack-charmers@lists.ubuntu.com>

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peers.py Normal file
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#!/usr/bin/python
# 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 charms.reactive import RelationBase
from charms.reactive import hook
from charms.reactive import scopes
class OpenstackHAPeers(RelationBase):
scope = scopes.UNIT
@hook('{peers:openstack-ha}-relation-joined')
def joined(self):
conv = self.conversation()
conv.set_state('{relation_name}.joined')
@hook('{peers:openstack-ha}-relation-changed')
def changed(self):
conv = self.conversation()
conv.set_state('{relation_name}.connected')
if self.data_complete(conv):
conv.set_state('{relation_name}.available')
def ip_map(self, address_key='private-address'):
nodes = []
for conv in self.conversations():
host_name = conv.scope.replace('/', '-')
nodes.append((host_name, conv.get_remote(address_key)))
return nodes
@hook('{peers:openstack-ha}-relation-{broken,departed}')
def departed_or_broken(self):
conv = self.conversation()
conv.remove_state('{relation_name}.connected')
if not self.data_complete(conv):
conv.remove_state('{relation_name}.available')
def data_complete(self, conv):
"""
Get the connection string, if available, or None.
"""
data = {
'private_address': conv.get_remote('private-address'),
}
if all(data.values()):
return True
return False