Initial commit of interface
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name: openstack-ha
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summary: Interface for peer relation
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maintainer: OpenStack Charmers <openstack-charmers@lists.ubuntu.com>
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#!/usr/bin/python
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from charms.reactive import RelationBase
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from charms.reactive import hook
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from charms.reactive import scopes
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class OpenstackHAPeers(RelationBase):
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scope = scopes.UNIT
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@hook('{peers:openstack-ha}-relation-joined')
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def joined(self):
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conv = self.conversation()
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conv.set_state('{relation_name}.joined')
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@hook('{peers:openstack-ha}-relation-changed')
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def changed(self):
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conv = self.conversation()
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conv.set_state('{relation_name}.connected')
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if self.data_complete(conv):
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conv.set_state('{relation_name}.available')
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def ip_map(self, address_key='private-address'):
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nodes = []
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for conv in self.conversations():
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host_name = conv.scope.replace('/', '-')
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nodes.append((host_name, conv.get_remote(address_key)))
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return nodes
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@hook('{peers:openstack-ha}-relation-{broken,departed}')
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def departed_or_broken(self):
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conv = self.conversation()
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conv.remove_state('{relation_name}.connected')
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if not self.data_complete(conv):
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conv.remove_state('{relation_name}.available')
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def data_complete(self, conv):
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"""
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Get the connection string, if available, or None.
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"""
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data = {
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'private_address': conv.get_remote('private-address'),
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}
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if all(data.values()):
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return True
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return False
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