| // 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. |
| |
| package com.cloud.storage.listener; |
| |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.annotation.PostConstruct; |
| import javax.inject.Inject; |
| |
| import org.apache.cloudstack.framework.config.dao.ConfigurationDao; |
| import org.apache.cloudstack.framework.events.EventBus; |
| import org.apache.cloudstack.framework.events.EventBusException; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.LogManager; |
| import org.springframework.beans.factory.NoSuchBeanDefinitionException; |
| import org.springframework.stereotype.Component; |
| |
| import com.cloud.configuration.Config; |
| import com.cloud.event.EventCategory; |
| import com.cloud.server.ManagementService; |
| import com.cloud.storage.Snapshot; |
| import com.cloud.storage.Snapshot.Event; |
| import com.cloud.storage.Snapshot.State; |
| import com.cloud.storage.SnapshotVO; |
| import com.cloud.utils.component.ComponentContext; |
| import com.cloud.utils.fsm.StateListener; |
| import com.cloud.utils.fsm.StateMachine2; |
| |
| @Component |
| public class SnapshotStateListener implements StateListener<State, Event, SnapshotVO> { |
| |
| protected static EventBus s_eventBus = null; |
| protected static ConfigurationDao s_configDao; |
| |
| @Inject |
| private ConfigurationDao configDao; |
| |
| protected Logger logger = LogManager.getLogger(getClass()); |
| |
| public SnapshotStateListener() { |
| |
| } |
| |
| @PostConstruct |
| void init() { |
| s_configDao = configDao; |
| } |
| |
| @Override |
| public boolean preStateTransitionEvent(State oldState, Event event, State newState, SnapshotVO vo, boolean status, Object opaque) { |
| pubishOnEventBus(event.name(), "preStateTransitionEvent", vo, oldState, newState); |
| return true; |
| } |
| |
| @Override |
| public boolean postStateTransitionEvent(StateMachine2.Transition<State, Event> transition, SnapshotVO vo, boolean status, Object opaque) { |
| pubishOnEventBus(transition.getEvent().name(), "postStateTransitionEvent", vo, transition.getCurrentState(), transition.getToState()); |
| return true; |
| } |
| |
| private void pubishOnEventBus(String event, String status, Snapshot vo, State oldState, State newState) { |
| |
| String configKey = Config.PublishResourceStateEvent.key(); |
| String value = s_configDao.getValue(configKey); |
| boolean configValue = Boolean.parseBoolean(value); |
| if(!configValue) { |
| return; |
| } |
| try { |
| s_eventBus = ComponentContext.getComponent(EventBus.class); |
| } catch (NoSuchBeanDefinitionException nbe) { |
| return; // no provider is configured to provide events bus, so just return |
| } |
| |
| String resourceName = getEntityFromClassName(Snapshot.class.getName()); |
| org.apache.cloudstack.framework.events.Event eventMsg = |
| new org.apache.cloudstack.framework.events.Event(ManagementService.Name, EventCategory.RESOURCE_STATE_CHANGE_EVENT.getName(), event, resourceName, |
| vo.getUuid()); |
| Map<String, String> eventDescription = new HashMap<String, String>(); |
| eventDescription.put("resource", resourceName); |
| eventDescription.put("id", vo.getUuid()); |
| eventDescription.put("old-state", oldState.name()); |
| eventDescription.put("new-state", newState.name()); |
| |
| String eventDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z").format(new Date()); |
| eventDescription.put("eventDateTime", eventDate); |
| |
| eventMsg.setDescription(eventDescription); |
| try { |
| s_eventBus.publish(eventMsg); |
| } catch (EventBusException e) { |
| logger.warn("Failed to publish state change event on the event bus."); |
| } |
| } |
| |
| private String getEntityFromClassName(String entityClassName) { |
| int index = entityClassName.lastIndexOf("."); |
| String entityName = entityClassName; |
| if (index != -1) { |
| entityName = entityClassName.substring(index + 1); |
| } |
| return entityName; |
| } |
| } |