115 lines
4.1 KiB
Python
115 lines
4.1 KiB
Python
#
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# Copyright 2012-2013 eNovance <licensing@enovance.com>
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#
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# Author: Julien Danjou <julien@danjou.info>
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#
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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 oslo.config import cfg
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from stevedore import extension
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from ceilometer.event import endpoint as event_endpoint
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from ceilometer import messaging
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from ceilometer.openstack.common.gettextutils import _
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from ceilometer.openstack.common import log
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from ceilometer.openstack.common import service as os_service
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from ceilometer import pipeline
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LOG = log.getLogger(__name__)
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OPTS = [
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cfg.BoolOpt('ack_on_event_error',
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default=True,
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deprecated_group='collector',
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help='Acknowledge message when event persistence fails.'),
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cfg.BoolOpt('store_events',
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deprecated_group='collector',
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default=False,
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help='Save event details.'),
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cfg.MultiStrOpt('messaging_urls',
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default=[],
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help="Messaging URLs to listen for notifications. "
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"Example: transport://user:pass@host1:port"
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"[,hostN:portN]/virtual_host "
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"(DEFAULT/transport_url is used if empty)"),
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]
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cfg.CONF.register_opts(OPTS, group="notification")
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class NotificationService(os_service.Service):
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NOTIFICATION_NAMESPACE = 'ceilometer.notification'
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@classmethod
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def _get_notifications_manager(cls, pm):
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return extension.ExtensionManager(
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namespace=cls.NOTIFICATION_NAMESPACE,
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invoke_on_load=True,
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invoke_args=(pm, )
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)
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def start(self):
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super(NotificationService, self).start()
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# FIXME(sileht): endpoint use notification_topics option
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# and it should not because this is oslo.messaging option
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# not a ceilometer, until we have a something to get
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# the notification_topics in an other way
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# we must create a transport to ensure the option have
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# beeen registered by oslo.messaging
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transport = messaging.get_transport()
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messaging.get_notifier(transport, '')
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self.pipeline_manager = pipeline.setup_pipeline()
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self.notification_manager = self._get_notifications_manager(
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self.pipeline_manager)
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if not list(self.notification_manager):
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LOG.warning(_('Failed to load any notification handlers for %s'),
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self.NOTIFICATION_NAMESPACE)
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ack_on_error = cfg.CONF.notification.ack_on_event_error
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endpoints = []
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if cfg.CONF.notification.store_events:
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endpoints = [event_endpoint.EventsNotificationEndpoint()]
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targets = []
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for ext in self.notification_manager:
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handler = ext.obj
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LOG.debug(_('Event types from %(name)s: %(type)s'
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' (ack_on_error=%(error)s)') %
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{'name': ext.name,
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'type': ', '.join(handler.event_types),
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'error': ack_on_error})
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targets.extend(handler.get_targets(cfg.CONF))
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endpoints.append(handler)
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urls = cfg.CONF.notification.messaging_urls or [None]
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self.listeners = []
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for url in urls:
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transport = messaging.get_transport(url)
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listener = messaging.get_notification_listener(
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transport, targets, endpoints)
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listener.start()
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self.listeners.append(listener)
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# Add a dummy thread to have wait() working
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self.tg.add_timer(604800, lambda: None)
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def stop(self):
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map(lambda x: x.stop(), self.listeners)
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super(NotificationService, self).stop()
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