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| # 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 ZookeeperRequires(RelationBase): | |
| scope = scopes.UNIT | |
| @hook('{requires:zookeeper}-relation-joined') | |
| def joined(self): | |
| conv = self.conversation() | |
| conv.set_state('{relation_name}.joined') | |
| @hook('{requires:zookeeper}-relation-changed') | |
| def changed(self): | |
| conv = self.conversation() | |
| if self.zookeepers(): | |
| conv.set_state('{relation_name}.ready') | |
| else: | |
| conv.remove_state('{relation_name}.ready') | |
| @hook('{requires:zookeeper}-relation-departed') | |
| def departed(self): | |
| conv = self.conversation() | |
| conv.remove_state('{relation_name}.ready') | |
| conv.remove_state('{relation_name}.joined') | |
| def zookeepers(self): | |
| zks = [] | |
| for conv in self.conversations(): | |
| port = conv.get_remote('port') | |
| rest_port = conv.get_remote('rest_port') | |
| host = conv.get_remote('host') or conv.get_remote( | |
| 'private-address') | |
| if port: | |
| zks.append({ | |
| 'host': host, | |
| 'port': port, | |
| 'rest_port': rest_port, | |
| }) | |
| return zks |