83 lines
3.1 KiB
Python
83 lines
3.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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'''RabbitMQ is the primary message queue backend for OpenStack. It
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is accessed via the status plugin, which must be enabled for this
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collector to work. The environment variables OS_QA_RABBITMQ_API,
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OS_QA_RABBITMQ_USER, OS_QA_RABBITMQ_PASS, are used to configure how the
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status API is contacted by the collector.
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The counters reported are entirely 'published' methods, meaning this is
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just a measure of how many messages were pushed into RabbitMQ.
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Because of the way oslo.messaging uses RabbitMQ, we won't know what exact
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application reply queues are attached to. So all of those messages end up
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in the 'reply' counter. Fanouts also have a random string added to them,
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so we strip that off.
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'''
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import base64
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import json
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import logging
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import os
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import re
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import socket
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from six.moves import http_client
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from os_performance_tools import error
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OS_QA_RABBITMQ_API = os.environ.get('OS_QA_RABBITMQ_API',
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'127.0.0.1:15672')
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OS_QA_RABBITMQ_API_USER = os.environ.get('OS_QA_RABBITMQ_USER',
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'guest')
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OS_QA_RABBITMQ_API_PASS = os.environ.get('OS_QA_RABBITMQ_PASS',
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'guest')
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FANOUT_RE = re.compile(r'([\-a-zA-Z0-9]+)_fanout_[a-f0-9]{32}')
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def collect():
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log = logging.getLogger()
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conn = http_client.HTTPConnection(OS_QA_RABBITMQ_API)
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auth = '%s:%s' % (OS_QA_RABBITMQ_API_USER, OS_QA_RABBITMQ_API_PASS)
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auth = base64.encodestring(auth.encode('utf-8')).decode('ascii')
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auth = auth.replace('\n', '')
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auth = {'Authorization': 'Basic %s' % auth}
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try:
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conn.request('GET', '/api/queues', headers=auth)
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log.debug('requested /api/queues')
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content = conn.getresponse().read()
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log.debug('received content [%s]' % content)
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except (socket.error, http_client.HTTPException) as e:
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raise error.CollectionError(str(e))
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content = json.loads(content)
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if not isinstance(content, list):
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raise error.CollectionError(
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'Unexpected format encountered. %s' % content)
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collected = {}
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for q in content:
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if not isinstance(q, dict):
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continue
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if "name" not in q:
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continue
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qname = q["name"]
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if qname.startswith('reply_'):
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qname = 'reply'
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else:
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match = FANOUT_RE.match(qname)
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if match:
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qname = '{}_fanout'.format(match.group(1))
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if "message_stats" in q and "publish" in q["message_stats"]:
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target = '%s_publish' % (qname)
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collected[target] = q["message_stats"]["publish"]
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return collected
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