99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
# Copyright 2019 Canonical Ltd
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#
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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 import reactive
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import charmhelpers.contrib.network.ip as ch_net_ip
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class MySQLSharedProvides(reactive.Endpoint):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.ingress_address = ch_net_ip.get_relation_ip(self.endpoint_name)
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def relation_ids(self):
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return [x.relation_id for x in self.relations]
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def set_ingress_address(self):
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for relation in self.relations:
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relation.to_publish_raw["ingress-address"] = self.ingress_address
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relation.to_publish_raw["private-address"] = self.ingress_address
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def available(self):
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for unit in self.all_joined_units:
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if unit.received['username']:
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return True
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for key in unit.received.keys():
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if "_username" in key:
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return True
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return False
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@reactive.when('endpoint.{endpoint_name}.joined')
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def joined(self):
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reactive.clear_flag(self.expand_name('{endpoint_name}.available'))
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reactive.set_flag(self.expand_name('{endpoint_name}.connected'))
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self.set_ingress_address()
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@reactive.when('endpoint.{endpoint_name}.changed')
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def changed(self):
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flags = (
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self.expand_name(
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'endpoint.{endpoint_name}.changed.database'),
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self.expand_name(
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'endpoint.{endpoint_name}.changed.username'),
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self.expand_name(
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'endpoint.{endpoint_name}.changed.hostname'),
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)
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if reactive.all_flags_set(*flags):
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for flag in flags:
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reactive.clear_flag(flag)
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if self.available():
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reactive.set_flag(self.expand_name('{endpoint_name}.available'))
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else:
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reactive.clear_flag(self.expand_name('{endpoint_name}.available'))
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@reactive.when_any('endpoint.{endpoint_name}.broken',
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'endpoint.{endpoint_name}.departed')
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def departed(self):
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flags = (
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self.expand_name('{endpoint_name}.connected'),
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self.expand_name('{endpoint_name}.available'),
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)
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for flag in flags:
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reactive.clear_flag(flag)
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def set_db_connection_info(
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self, relation_id, db_host, password,
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allowed_units=None, prefix=None, wait_timeout=None, db_port=3306):
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# Implementations of shared-db pre-date the json encoded era of
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# interface layers. In order not to have to update dozens of charms,
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# publish in raw data
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# No prefix for db_host and wait_timeout
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self.relations[relation_id].to_publish_raw["db_host"] = db_host
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self.relations[relation_id].to_publish_raw["db_port"] = db_port
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if wait_timeout:
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self.relations[relation_id].to_publish_raw["wait_timeout"] = (
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wait_timeout)
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if not prefix:
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self.relations[relation_id].to_publish_raw["password"] = password
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self.relations[relation_id].to_publish_raw[
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"allowed_units"] = allowed_units
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else:
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self.relations[relation_id].to_publish_raw[
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"{}_password".format(prefix)] = password
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self.relations[relation_id].to_publish_raw[
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"{}_allowed_units".format(prefix)] = allowed_units
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