135 lines
4.7 KiB
Python
Executable File
135 lines
4.7 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 uuid
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from nfv_common import alarm
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# Alarm Template Definitions
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# *** Don't add a period to the end of reason_text, these are not sentences.
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_alarm_templates = {
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alarm.ALARM_TYPE.HOST_SERVICES_FAILED: {
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'entity_type': "host.services",
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'entity': "host=%(host_name)s.services=compute",
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'event_type': alarm.ALARM_EVENT_TYPE.PROCESSING_ERROR_ALARM,
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'severity': alarm.ALARM_SEVERITY.CRITICAL,
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'probable_cause': alarm.ALARM_PROBABLE_CAUSE.UNKNOWN,
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'reason_text': "Host %(host_name)s compute services failure"
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"%(additional_text)s",
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'repair_action': "Wait for host services recovery to complete; if problem "
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"persists contact next level of support",
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'exclude_alarm_context': [alarm.ALARM_CONTEXT.TENANT],
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},
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}
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def _alarm_template_get(alarm_type, alarm_context):
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"""
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Returns the alarm template associated with the given context
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"""
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if alarm_type not in _alarm_templates:
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return None
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alarm_template = _alarm_templates[alarm_type]
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if alarm_context in alarm_template['exclude_alarm_context']:
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return None
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template = dict()
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template['entity_type'] = alarm_template['entity_type']
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template['entity'] = alarm_template['entity']
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template['event_type'] = alarm_template['event_type']
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template['severity'] = alarm_template['severity']
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template['probable_cause'] = alarm_template['probable_cause']
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template['reason_text'] = alarm_template['reason_text']
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template['repair_action'] = alarm_template['repair_action']
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alarm_template_context_data = alarm_template.get('alarm_context_data', None)
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if alarm_template_context_data is not None:
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if alarm_context in alarm_template_context_data:
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template_context = alarm_template_context_data[alarm_context]
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if 'entity_type' in template_context:
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template['entity_type'] = template_context['entity_type']
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if 'entity' in template_context:
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template['entity'] = template_context['entity']
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if 'event_type' in template_context:
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template['event_type'] = template_context['event_type']
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if 'severity' in template_context:
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template['severity'] = template_context['severity']
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if 'probable_cause' in template_context:
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template['probable_cause'] = template_context['probable_cause']
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if 'reason_text' in template_context:
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template['reason_text'] = template_context['reason_text']
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if 'repair_action' in template_context:
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template['repair_action'] = template_context['repair_action']
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return template
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def _alarm_raise(alarm_type, alarm_context, template, data):
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"""
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Raises an alarm given the alarm template and data
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"""
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alarm_uuid = uuid.uuid4()
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alarm_data = alarm.AlarmData(alarm_uuid, alarm_type, alarm_context,
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template['entity_type'],
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template['entity'] % data,
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template['event_type'],
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template['probable_cause'],
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template['severity'],
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alarm.ALARM_TREND_INDICATION.NO_CHANGE,
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template['reason_text'] % data,
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template['repair_action'])
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alarm.alarm_raise(alarm_uuid, alarm_data)
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return alarm_data
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def host_raise_alarm(host, alarm_type, additional_text=None, alarm_context=None):
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"""
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Raise alarms against the host
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"""
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data = dict()
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data['host_name'] = host.name
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data['additional_text'] = additional_text
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alarm_list = list()
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# For now, override alarm context to be the admin only
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alarm_context = alarm.ALARM_CONTEXT.ADMIN
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if alarm_context is None:
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for alarm_context in alarm.ALARM_CONTEXT:
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template = _alarm_template_get(alarm_type, alarm_context)
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if template is not None:
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alarm_data = _alarm_raise(alarm_type, alarm_context, template,
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data)
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alarm_list.append(alarm_data)
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else:
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template = _alarm_template_get(alarm_type, alarm_context)
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if template is not None:
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alarm_data = _alarm_raise(alarm_type, alarm_context, template,
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data)
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alarm_list.append(alarm_data)
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return alarm_list
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def host_clear_alarm(alarm_list):
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"""
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Clear alarms against the instance
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"""
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for alarm_data in alarm_list:
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alarm.alarm_clear(alarm_data.alarm_uuid)
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