110 lines
3.2 KiB
Python
Executable File
110 lines
3.2 KiB
Python
Executable File
#
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# Copyright (c) 2015-2016 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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import datetime
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import six
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from nfv_common import debug
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from nfv_common import thread
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from nfv_common import timers
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from nfv_common.helpers import coroutine
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from nfv_common.helpers import Singleton
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from nfv_common.alarm._alarm_handlers import AlarmHandlers
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DLOG = debug.debug_get_logger('nfv_common.alarm.alarm_thread')
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@six.add_metaclass(Singleton)
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class AlarmWorker(thread.ThreadWorker):
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"""
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Alarm Worker
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"""
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def __init__(self, name, config):
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super(AlarmWorker, self).__init__(name)
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self._config = config
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self._handlers = None
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self._alarm_audit_timer_id = None
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@coroutine
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def _alarm_audit(self):
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"""
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Called periodically to audit alarms
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"""
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while True:
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(yield)
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self._handlers.audit_alarms()
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def initialize(self):
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"""
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Initialize the Alarm Worker
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"""
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self._handlers = AlarmHandlers(self._config['namespace'],
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self._config['handlers'])
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self._handlers.initialize(self._config['config_file'])
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self._alarm_audit_timer_id = timers.timers_create_timer(
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'alarm_audit', int(self._config['audit_interval']),
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int(self._config['audit_interval']), self._alarm_audit)
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def finalize(self):
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"""
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Finalize the Alarm Worker
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"""
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if self._handlers is not None:
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self._handlers.finalize()
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if self._alarm_audit_timer_id is not None:
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timers.timers_delete_timer(self._alarm_audit_timer_id)
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def do_work(self, action, work):
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"""
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Do work given to the Alarm Worker
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"""
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if AlarmThread.ACTION_RAISE_ALARM == action:
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DLOG.verbose("Raise alarm with uuid=%s" % work['alarm-uuid'])
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self._handlers.raise_alarm(work['alarm-uuid'], work['alarm-data'])
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elif AlarmThread.ACTION_CLEAR_ALARM == action:
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DLOG.verbose("Clear alarm with uuid=%s" % work['alarm-uuid'])
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self._handlers.clear_alarm(work['alarm-uuid'])
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else:
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DLOG.debug("Unknown action %s given." % action)
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@six.add_metaclass(Singleton)
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class AlarmThread(thread.Thread):
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"""
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Alarm Thread
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"""
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ACTION_RAISE_ALARM = "thread-raise-alarm"
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ACTION_CLEAR_ALARM = "thread-clear-alarm"
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def __init__(self, config=None):
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self._worker = AlarmWorker('Alarm', config)
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super(AlarmThread, self).__init__('Alarm', self._worker)
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def alarm_raise(self, alarm_uuid, alarm_data):
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"""
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Send raise alarm to the Alarm Thread Worker
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"""
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work = dict()
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work['alarm-uuid'] = alarm_uuid
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work['alarm-data'] = alarm_data
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work['alarm-change-date'] = datetime.datetime.utcnow()
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self.send_work(AlarmThread.ACTION_RAISE_ALARM, work)
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def alarm_clear(self, alarm_uuid):
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"""
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Send clear alarm to the Alarm Thread Worker
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"""
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work = dict()
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work['alarm-uuid'] = alarm_uuid
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work['alarm-data'] = None
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work['alarm-change-date'] = datetime.datetime.utcnow()
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self.send_work(AlarmThread.ACTION_CLEAR_ALARM, work)
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