114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
#!/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}.connected')
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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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address = conv.get_remote(address_key)
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if address:
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nodes.append((host_name, address))
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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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def set_address(self, address_type, address):
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'''Advertise the address of this unit of a particular type
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:param address_type: str Type of address being advertised, e.g.
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internal/public/admin etc
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:param address: str IP of this unit in 'address_type' network
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@returns None'''
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for conv in self.conversations():
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conv.set_remote(
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key='{}-address'.format(address_type),
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value=address)
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def send_all(self, settings, store_local=False):
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'''Advertise a setting to peer units
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:param settings: dict Settings to be advertised to peers
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:param store_local: boolean Whether to store setting in local db
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@returns None'''
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for conv in self.conversations():
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conv.set_remote(data=settings)
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if store_local:
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conv.set_local(data=settings)
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def retrieve_local(self, key):
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'''Inspect conversation and look for key in local db
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:param key: str Key to look for in localdb
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@returns list: List of values of key
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'''
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values = []
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for conv in self.conversations():
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value = conv.get_local(key)
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if value:
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values.append(value)
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return values
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def retrieve_remote(self, key):
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'''Inspect conversation and look for key being advertised by peer
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:param key: str Key to look for from peer
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@returns list: List of values of key
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'''
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values = []
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for conv in self.conversations():
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value = conv.get_remote(key)
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if value:
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values.append(value)
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return values
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