102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
#
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# Copyright 2013-2014 eNovance
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#
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# Author: Mehdi Abaakouk <mehdi.abaakouk@enovance.com>
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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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"""Rest alarm notifier."""
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import eventlet
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from oslo.config import cfg
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from oslo.serialization import jsonutils
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import requests
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import six.moves.urllib.parse as urlparse
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from ceilometer.alarm import notifier
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from ceilometer.openstack.common import context
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from ceilometer.openstack.common.gettextutils import _
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from ceilometer.openstack.common import log
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LOG = log.getLogger(__name__)
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REST_NOTIFIER_OPTS = [
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cfg.StrOpt('rest_notifier_certificate_file',
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default='',
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help='SSL Client certificate for REST notifier.'
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),
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cfg.StrOpt('rest_notifier_certificate_key',
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default='',
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help='SSL Client private key for REST notifier.'
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),
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cfg.BoolOpt('rest_notifier_ssl_verify',
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default=True,
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help='Whether to verify the SSL Server certificate when '
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'calling alarm action.'
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),
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cfg.IntOpt('rest_notifier_max_retries',
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default=0,
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help='Number of retries for REST notifier',
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),
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]
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cfg.CONF.register_opts(REST_NOTIFIER_OPTS, group="alarm")
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class RestAlarmNotifier(notifier.AlarmNotifier):
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"""Rest alarm notifier."""
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@staticmethod
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def notify(action, alarm_id, previous, current, reason, reason_data,
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headers=None):
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headers = headers or {}
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if not headers.get('x-openstack-request-id'):
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headers['x-openstack-request-id'] = context.generate_request_id()
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LOG.info(_(
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"Notifying alarm %(alarm_id)s from %(previous)s "
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"to %(current)s with action %(action)s because "
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"%(reason)s. request-id: %(request_id)s") %
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({'alarm_id': alarm_id, 'previous': previous,
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'current': current, 'action': action,
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'reason': reason,
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'request_id': headers['x-openstack-request-id']}))
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body = {'alarm_id': alarm_id, 'previous': previous,
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'current': current, 'reason': reason,
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'reason_data': reason_data}
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headers['content-type'] = 'application/json'
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kwargs = {'data': jsonutils.dumps(body),
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'headers': headers}
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if action.scheme == 'https':
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default_verify = int(cfg.CONF.alarm.rest_notifier_ssl_verify)
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options = urlparse.parse_qs(action.query)
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verify = bool(int(options.get('ceilometer-alarm-ssl-verify',
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[default_verify])[-1]))
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kwargs['verify'] = verify
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cert = cfg.CONF.alarm.rest_notifier_certificate_file
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key = cfg.CONF.alarm.rest_notifier_certificate_key
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if cert:
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kwargs['cert'] = (cert, key) if key else cert
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# FIXME(rhonjo): Retries are automatically done by urllib3 in requests
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# library. However, there's no interval between retries in urllib3
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# implementation. It will be better to put some interval between
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# retries (future work).
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max_retries = cfg.CONF.alarm.rest_notifier_max_retries
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session = requests.Session()
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session.mount(action.geturl(),
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requests.adapters.HTTPAdapter(max_retries=max_retries))
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eventlet.spawn_n(session.post, action.geturl(), **kwargs)
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