81 lines
2.7 KiB
Python
81 lines
2.7 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 urllib import parse as urlparse
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from ceilometer import keystone_client
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from ceilometer import publisher
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from zaqarclient.queues.v2 import client as zaqarclient
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DEFAULT_TTL = 3600
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class ZaqarPublisher(publisher.ConfigPublisherBase):
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"""Publish metering data to a Zaqar queue.
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The target queue name must be configured in the ceilometer pipeline
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configuration file. The TTL can also optionally be specified as a query
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argument::
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meter:
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- name: meter_zaqar
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meters:
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- "*"
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sinks:
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- zaqar_sink
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sinks:
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- name: zaqar_sink
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publishers:
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- zaqar://?queue=meter_queue&ttl=1200
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The credentials to access Zaqar must be set in the [zaqar] section in the
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configuration.
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"""
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def __init__(self, conf, parsed_url):
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super(ZaqarPublisher, self).__init__(conf, parsed_url)
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options = urlparse.parse_qs(parsed_url.query)
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self.queue_name = options.get('queue', [None])[0]
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if not self.queue_name:
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raise ValueError('Must specify a queue in the zaqar publisher')
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self.ttl = int(options.pop('ttl', [DEFAULT_TTL])[0])
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self._client = None
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@property
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def client(self):
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if self._client is None:
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session = keystone_client.get_session(
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self.conf, group=self.conf.zaqar.auth_section)
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self._client = zaqarclient.Client(session=session)
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return self._client
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def publish_samples(self, samples):
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"""Send a metering message for publishing
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:param samples: Samples from pipeline.
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"""
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queue = self.client.queue(self.queue_name)
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messages = [{'body': sample.as_dict(), 'ttl': self.ttl}
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for sample in samples]
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queue.post(messages)
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def publish_events(self, events):
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"""Send an event message for publishing
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:param events: events from pipeline.
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"""
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queue = self.client.queue(self.queue_name)
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messages = [{'body': event.serialize(), 'ttl': self.ttl}
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for event in events]
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queue.post(messages)
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