a5785c1e9b
This change modify the loading of the publisher so it's driver based, like our current storage model. That will allow to use the same publisher multiple times with different parameters in the future. This change also adds a new publisher called 'test' that comes from a factorisation of some of the testing code. Blueprint: pipeline-publisher-url Change-Id: Ie26beac213383fff2db759e2df216ba1f454ef9c Signed-off-by: Julien Danjou <julien@danjou.info>
82 lines
2.4 KiB
Python
82 lines
2.4 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2013 eNovance
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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 ceilometer import pipeline
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from ceilometer import transformer
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from ceilometer.openstack.common import context as req_context
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from ceilometer.openstack.common import log as logging
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from oslo.config import cfg
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from stevedore import extension
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LOG = logging.getLogger(__name__)
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cfg.CONF.import_opt('counter_source', 'ceilometer.counter')
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_notification_manager = None
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_pipeline_manager = None
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def _load_notification_manager():
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global _notification_manager
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namespace = 'ceilometer.collector'
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LOG.debug('loading notification handlers from %s', namespace)
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_notification_manager = extension.ExtensionManager(
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namespace=namespace,
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invoke_on_load=True)
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if not list(_notification_manager):
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LOG.warning('Failed to load any notification handlers for %s',
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namespace)
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def _load_pipeline_manager():
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global _pipeline_manager
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_pipeline_manager = pipeline.setup_pipeline(
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transformer.TransformerExtensionManager(
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'ceilometer.transformer',
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),
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)
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def _process_notification_for_ext(ext, context, notification):
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handler = ext.obj
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if notification['event_type'] in handler.get_event_types():
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with _pipeline_manager.publisher(context,
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cfg.CONF.counter_source) as p:
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# FIXME(dhellmann): Spawn green thread?
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p(list(handler.process_notification(notification)))
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def notify(context, message):
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"""Sends a notification as a meter using Ceilometer pipelines."""
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if not _notification_manager:
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_load_notification_manager()
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if not _pipeline_manager:
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_load_pipeline_manager()
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_notification_manager.map(
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_process_notification_for_ext,
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context=context or req_context.get_admin_context(),
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notification=message)
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