e49c949f39
This introduces a simpler matching system for event types that supports wildcard. We use this to grab all Nova instances notifications and a bit more Neutron events. We also change the get_event_types to a property to simplify the code a bit. Change-Id: Ica133ff2e9348a5d2640f068251d034bbd8a4f43
75 lines
2.2 KiB
Python
75 lines
2.2 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 stevedore import extension
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LOG = logging.getLogger(__name__)
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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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with _pipeline_manager.publisher(context) as p:
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# FIXME(dhellmann): Spawn green thread?
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p(list(ext.obj.to_samples(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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