679a76dfe5
Move common requires code in to the common module so that requires.py only contains the code which is specific to reactive charms. This will allow for a subsequent patch which creates a requires interface consumable by operator framework charms. Change-Id: I70037252cc7a677a9394929cb0cd17e9506ab624
59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
#!/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.
|
|
|
|
import relations.hacluster.interface_hacluster.common as common
|
|
from charms.reactive import hook
|
|
from charms.reactive import RelationBase
|
|
from charms.reactive import scopes
|
|
from charms.reactive.helpers import data_changed as rh_data_changed
|
|
from charmhelpers.core import hookenv
|
|
|
|
|
|
class HAClusterRequires(RelationBase, common.ResourceManagement):
|
|
# The hacluster charm is a subordinate charm and really only works
|
|
# for a single service to the HA Cluster relation, therefore set the
|
|
# expected scope to be GLOBAL.
|
|
scope = scopes.GLOBAL
|
|
|
|
@hook('{requires:hacluster}-relation-joined')
|
|
def joined(self):
|
|
self.set_state('{relation_name}.connected')
|
|
|
|
@hook('{requires:hacluster}-relation-changed')
|
|
def changed(self):
|
|
if self.is_clustered():
|
|
self.set_state('{relation_name}.available')
|
|
else:
|
|
self.remove_state('{relation_name}.available')
|
|
|
|
@hook('{requires:hacluster}-relation-{broken,departed}')
|
|
def departed(self):
|
|
self.remove_state('{relation_name}.available')
|
|
self.remove_state('{relation_name}.connected')
|
|
|
|
def data_changed(self, data_id, data, hash_type='md5'):
|
|
return rh_data_changed(data_id, data, hash_type)
|
|
|
|
def get_remote_all(self, key, default=None):
|
|
"""Return a list of all values presented by remote units for key"""
|
|
values = []
|
|
for conversation in self.conversations():
|
|
for relation_id in conversation.relation_ids:
|
|
for unit in hookenv.related_units(relation_id):
|
|
value = hookenv.relation_get(key,
|
|
unit,
|
|
relation_id) or default
|
|
if value:
|
|
values.append(value)
|
|
return list(set(values))
|