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// 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
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// KIND, either express or implied. See the License for the
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package com.cloud.vm;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import com.cloud.server.ManagementService;
import com.cloud.utils.fsm.StateMachine2;
import com.cloud.vm.dao.UserVmDao;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
import org.apache.cloudstack.framework.events.EventBus;
import com.cloud.configuration.Config;
import com.cloud.event.EventCategory;
import com.cloud.event.EventTypes;
import com.cloud.event.UsageEventUtils;
import com.cloud.event.dao.UsageEventDao;
import com.cloud.network.dao.NetworkDao;
import com.cloud.network.dao.NetworkVO;
import com.cloud.service.dao.ServiceOfferingDao;
import com.cloud.utils.component.ComponentContext;
import com.cloud.utils.fsm.StateListener;
import com.cloud.vm.VirtualMachine.Event;
import com.cloud.vm.VirtualMachine.State;
import com.cloud.vm.dao.NicDao;
public class UserVmStateListener implements StateListener<State, VirtualMachine.Event, VirtualMachine> {
@Inject protected UsageEventDao _usageEventDao;
@Inject protected NetworkDao _networkDao;
@Inject protected NicDao _nicDao;
@Inject protected ServiceOfferingDao _offeringDao;
@Inject protected UserVmDao _userVmDao;
@Inject protected UserVmManager _userVmMgr;
@Inject protected ConfigurationDao _configDao;
private static final Logger s_logger = Logger.getLogger(UserVmStateListener.class);
protected static EventBus s_eventBus = null;
public UserVmStateListener(UsageEventDao usageEventDao, NetworkDao networkDao, NicDao nicDao, ServiceOfferingDao offeringDao, UserVmDao userVmDao, UserVmManager userVmMgr,
ConfigurationDao configDao) {
this._usageEventDao = usageEventDao;
this._networkDao = networkDao;
this._nicDao = nicDao;
this._offeringDao = offeringDao;
this._userVmDao = userVmDao;
this._userVmMgr = userVmMgr;
this._configDao = configDao;
}
@Override
public boolean preStateTransitionEvent(State oldState, Event event, State newState, VirtualMachine vo, boolean status, Object opaque) {
pubishOnEventBus(event.name(), "preStateTransitionEvent", vo, oldState, newState);
return true;
}
@Override
public boolean postStateTransitionEvent(StateMachine2.Transition<State, Event> transition, VirtualMachine vo, boolean status, Object opaque) {
if (!status) {
return false;
}
Event event = transition.getEvent();
State oldState = transition.getCurrentState();
State newState = transition.getToState();
pubishOnEventBus(event.name(), "postStateTransitionEvent", vo, oldState, newState);
if (vo.getType() != VirtualMachine.Type.User) {
return true;
}
if(transition.isImpacted(StateMachine2.Transition.Impact.USAGE)) {
if (oldState == State.Destroyed && newState == State.Stopped) {
generateUsageEvent(vo.getServiceOfferingId(), vo, EventTypes.EVENT_VM_CREATE);
} else if (newState == State.Running) {
generateUsageEvent(vo.getServiceOfferingId(), vo, EventTypes.EVENT_VM_START);
} else if (newState == State.Stopped) {
generateUsageEvent(vo.getServiceOfferingId(), vo, EventTypes.EVENT_VM_STOP);
List<NicVO> nics = _nicDao.listByVmId(vo.getId());
for (NicVO nic : nics) {
NetworkVO network = _networkDao.findById(nic.getNetworkId());
UsageEventUtils.publishUsageEvent(EventTypes.EVENT_NETWORK_OFFERING_REMOVE, vo.getAccountId(), vo.getDataCenterId(), vo.getId(),
Long.toString(nic.getId()), network.getNetworkOfferingId(), null, 0L, vo.getClass().getName(), vo.getUuid(), vo.isDisplay());
}
} else if (newState == State.Destroyed || newState == State.Error || newState == State.Expunging) {
generateUsageEvent(vo.getServiceOfferingId(), vo, EventTypes.EVENT_VM_DESTROY);
}
}
return true;
}
private void generateUsageEvent(Long serviceOfferingId, VirtualMachine vm, String eventType){
boolean displayVm = true;
if(vm.getType() == VirtualMachine.Type.User){
UserVmVO uservm = _userVmDao.findById(vm.getId());
displayVm = uservm.isDisplayVm();
}
_userVmMgr.generateUsageEvent(vm, displayVm, eventType);
}
private void pubishOnEventBus(String event, String status, VirtualMachine vo, VirtualMachine.State oldState, VirtualMachine.State newState) {
String configKey = Config.PublishResourceStateEvent.key();
String value = _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(VirtualMachine.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());
eventDescription.put("status", status);
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 (org.apache.cloudstack.framework.events.EventBusException e) {
s_logger.warn("Failed to publish state change event on the 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;
}
}