| #!/usr/bin/env python |
| |
| """ |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| """ |
| |
| import logging |
| import threading |
| |
| logger = logging.getLogger() |
| |
| class AlertCollector(): |
| """ |
| cluster -> name -> alert dict |
| """ |
| def __init__(self): |
| self.__buckets = {} |
| self.__lock = threading.RLock() |
| |
| |
| def put(self, cluster, alert): |
| self.__lock.acquire() |
| try: |
| if not cluster in self.__buckets: |
| self.__buckets[cluster] = {} |
| |
| self.__buckets[cluster][alert['name']] = alert |
| finally: |
| self.__lock.release() |
| |
| |
| def remove(self, cluster, alert_name): |
| """ |
| Removes the alert with the specified name if it exists in the dictionary |
| """ |
| self.__lock.acquire() |
| try: |
| if not cluster in self.__buckets: |
| return |
| |
| del self.__buckets[cluster][alert_name] |
| finally: |
| self.__lock.release() |
| |
| |
| def remove_by_uuid(self, alert_uuid): |
| """ |
| Removes the alert with the specified uuid if it exists in the dictionary |
| """ |
| self.__lock.acquire() |
| try: |
| for cluster,alert_map in self.__buckets.iteritems(): |
| for alert_name in alert_map.keys(): |
| alert = alert_map[alert_name] |
| if alert['uuid'] == alert_uuid: |
| self.remove(cluster, alert_name) |
| finally: |
| self.__lock.release() |
| |
| |
| def alerts(self): |
| ''' |
| Gets all of the alerts collected since the last time this method was |
| called. This method will clear the collected alerts. |
| ''' |
| self.__lock.acquire() |
| try: |
| alerts = [] |
| for clustermap in self.__buckets.values()[:]: |
| alerts.extend(clustermap.values()) |
| |
| self.__buckets.clear() |
| return alerts |
| finally: |
| self.__lock.release() |
| |
| |
| |