Source code for aodh.event

#
# Copyright 2015 NEC Corporation.
#
# 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 oslo_config import cfg
import oslo_messaging
from oslo_service import service

from aodh.evaluator import event
from aodh import messaging
from aodh import storage


OPTS = [
    cfg.StrOpt('event_alarm_topic',
               default='alarm.all',
               help='The topic that aodh uses for event alarm evaluation.'),
]


[docs]class EventAlarmEndpoint(object): def __init__(self, evaluator): self.evaluator = evaluator
[docs] def sample(self, ctxt, publisher_id, event_type, payload, metadata): # TODO(r-mibu): requeue on error self.evaluator.evaluate_events(payload)
[docs]class EventAlarmEvaluationService(service.Service): def __init__(self, conf): super(EventAlarmEvaluationService, self).__init__() self.conf = conf self.storage_conn = storage.get_connection_from_config(self.conf) self.evaluator = event.EventAlarmEvaluator(self.conf)
[docs] def start(self): super(EventAlarmEvaluationService, self).start() self.listener = messaging.get_notification_listener( messaging.get_transport(self.conf), [oslo_messaging.Target(topic=self.conf.event_alarm_topic)], [EventAlarmEndpoint(self.evaluator)]) self.listener.start() # Add a dummy thread to have wait() working self.tg.add_timer(604800, lambda: None)
[docs] def stop(self): self.listener.stop() self.listener.wait() super(EventAlarmEvaluationService, self).stop()

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