211 lines
7.2 KiB
Python
211 lines
7.2 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from heat.common.i18n import _
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from heat.engine import clients
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from heat.engine import constraints
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from heat.engine import properties
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from heat.engine import resource
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from heat.engine import support
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class MonascaAlarmDefinition(resource.Resource):
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"""Heat Template Resource for Monasca Alarm definition.
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This plug-in requires python-monascaclient>=1.0.22. So to enable this
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plug-in, install this client library and restart the heat-engine.
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Alarm definitions is necessary to describe and manage alarms in a
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one-to-many relationship in order to avoid having to manually declare each
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alarm even though they may share many common attributes and differ in only
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one, such as hostname.
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"""
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support_status = support.SupportStatus(
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version='5.0.0',
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status=support.UNSUPPORTED)
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default_client_name = 'monasca'
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entity = 'alarm_definitions'
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SEVERITY_LEVELS = (
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LOW, MEDIUM, HIGH, CRITICAL
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) = (
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'low', 'medium', 'high', 'critical'
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)
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PROPERTIES = (
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NAME, DESCRIPTION, EXPRESSION, MATCH_BY, SEVERITY,
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OK_ACTIONS, ALARM_ACTIONS, UNDETERMINED_ACTIONS,
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ACTIONS_ENABLED
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) = (
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'name', 'description', 'expression', 'match_by', 'severity',
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'ok_actions', 'alarm_actions', 'undetermined_actions',
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'actions_enabled'
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)
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properties_schema = {
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NAME: properties.Schema(
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properties.Schema.STRING,
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_('Name of the alarm. By default, physical resource name is '
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'used.'),
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update_allowed=True
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),
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DESCRIPTION: properties.Schema(
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properties.Schema.STRING,
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_('Description of the alarm.'),
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update_allowed=True
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),
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EXPRESSION: properties.Schema(
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properties.Schema.STRING,
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_('Expression of the alarm to evaluate.'),
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update_allowed=False,
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required=True
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),
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MATCH_BY: properties.Schema(
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properties.Schema.LIST,
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_('The metric dimensions to match to the alarm dimensions. '
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'One or more dimension key names separated by a comma.')
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),
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SEVERITY: properties.Schema(
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properties.Schema.STRING,
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_('Severity of the alarm.'),
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update_allowed=True,
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constraints=[constraints.AllowedValues(
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SEVERITY_LEVELS
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)],
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default=LOW
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),
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OK_ACTIONS: properties.Schema(
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properties.Schema.LIST,
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_('The notification methods to use when an alarm state is OK.'),
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update_allowed=True,
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schema=properties.Schema(
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properties.Schema.STRING,
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_('Monasca notification.'),
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constraints=[constraints.CustomConstraint(
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'monasca.notification')
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]
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)
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),
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ALARM_ACTIONS: properties.Schema(
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properties.Schema.LIST,
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_('The notification methods to use when an alarm state is ALARM.'),
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update_allowed=True,
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schema=properties.Schema(
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properties.Schema.STRING,
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_('Monasca notification.'),
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constraints=[constraints.CustomConstraint(
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'monasca.notification')
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]
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)
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),
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UNDETERMINED_ACTIONS: properties.Schema(
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properties.Schema.LIST,
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_('The notification methods to use when an alarm state is '
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'UNDETERMINED.'),
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update_allowed=True,
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schema=properties.Schema(
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properties.Schema.STRING,
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_('Monasca notification.'),
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constraints=[constraints.CustomConstraint(
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'monasca.notification')
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]
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)
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),
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ACTIONS_ENABLED: properties.Schema(
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properties.Schema.BOOLEAN,
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_('Whether to enable the actions or not.'),
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update_allowed=True,
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default=True,
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),
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}
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def handle_create(self):
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args = dict(
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name=(self.properties[self.NAME] or
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self.physical_resource_name()),
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description=self.properties[self.DESCRIPTION],
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expression=self.properties[self.EXPRESSION],
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match_by=self.properties[self.MATCH_BY],
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severity=self.properties[self.SEVERITY],
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ok_actions=self.properties[self.OK_ACTIONS],
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alarm_actions=self.properties[self.ALARM_ACTIONS],
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undetermined_actions=self.properties[
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self.UNDETERMINED_ACTIONS]
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)
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alarm = self.client().alarm_definitions.create(**args)
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self.resource_id_set(alarm['id'])
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# Monasca enables action by default
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actions_enabled = self.properties[self.ACTIONS_ENABLED]
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if not actions_enabled:
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self.client().alarm_definitions.patch(
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alarm_id=self.resource_id,
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actions_enabled=actions_enabled
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)
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def handle_update(self, json_snippet, tmpl_diff, prop_diff):
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args = dict(alarm_id=self.resource_id)
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if prop_diff.get(self.NAME):
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args['name'] = prop_diff.get(self.NAME)
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if prop_diff.get(self.DESCRIPTION):
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args['description'] = prop_diff.get(self.DESCRIPTION)
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if prop_diff.get(self.SEVERITY):
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args['severity'] = prop_diff.get(self.SEVERITY)
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if prop_diff.get(self.OK_ACTIONS):
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args['ok_actions'] = prop_diff.get(self.OK_ACTIONS)
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if prop_diff.get(self.ALARM_ACTIONS):
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args['alarm_actions'] = prop_diff.get(self.ALARM_ACTIONS)
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if prop_diff.get(self.UNDETERMINED_ACTIONS):
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args['undetermined_actions'] = prop_diff.get(
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self.UNDETERMINED_ACTIONS
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)
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if prop_diff.get(self.ACTIONS_ENABLED):
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args['actions_enabled'] = prop_diff.get(self.ACTIONS_ENABLED)
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self.client().alarm_definitions.patch(**args)
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def handle_delete(self):
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if self.resource_id is not None:
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with self.client_plugin().ignore_not_found:
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self.client().alarm_definitions.delete(
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alarm_id=self.resource_id)
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# FIXME(kanagaraj-manickam) Remove this method once monasca defect 1484900
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# is fixed.
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def _show_resource(self):
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return self.client().alarm_definitions.get(self.resource_id)
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def resource_mapping():
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return {
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'OS::Monasca::AlarmDefinition': MonascaAlarmDefinition
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}
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def available_resource_mapping():
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if not clients.has_client(MonascaAlarmDefinition.default_client_name):
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return {}
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return resource_mapping()
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