59 lines
2.3 KiB
Python
59 lines
2.3 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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import relations.hacluster.interface_hacluster.common as common
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from charms.reactive import hook
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from charms.reactive import RelationBase
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from charms.reactive import scopes
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from charms.reactive.helpers import data_changed as rh_data_changed
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from charmhelpers.core import hookenv
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class HAClusterRequires(RelationBase, common.ResourceManagement):
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# The hacluster charm is a subordinate charm and really only works
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# for a single service to the HA Cluster relation, therefore set the
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# expected scope to be GLOBAL.
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scope = scopes.GLOBAL
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@hook('{requires:hacluster}-relation-joined')
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def joined(self):
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self.set_state('{relation_name}.connected')
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@hook('{requires:hacluster}-relation-changed')
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def changed(self):
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if self.is_clustered():
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self.set_state('{relation_name}.available')
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else:
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self.remove_state('{relation_name}.available')
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@hook('{requires:hacluster}-relation-{broken,departed}')
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def departed(self):
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self.remove_state('{relation_name}.available')
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self.remove_state('{relation_name}.connected')
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def data_changed(self, data_id, data, hash_type='md5'):
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return rh_data_changed(data_id, data, hash_type)
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def get_remote_all(self, key, default=None):
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"""Return a list of all values presented by remote units for key"""
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values = []
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for conversation in self.conversations():
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for relation_id in conversation.relation_ids:
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for unit in hookenv.related_units(relation_id):
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value = hookenv.relation_get(key,
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unit,
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relation_id) or default
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if value:
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values.append(value)
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return list(set(values))
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