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// 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.storage.listener;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import com.cloud.event.EventTypes;
import com.cloud.event.UsageEventUtils;
import com.cloud.utils.fsm.StateMachine2;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.VirtualMachine;
import com.cloud.vm.dao.VMInstanceDao;
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 org.apache.cloudstack.framework.events.EventBusException;
import com.cloud.configuration.Config;
import com.cloud.event.EventCategory;
import com.cloud.server.ManagementService;
import com.cloud.storage.Volume;
import com.cloud.storage.Volume.Event;
import com.cloud.storage.Volume.State;
import com.cloud.utils.component.ComponentContext;
import com.cloud.utils.fsm.StateListener;
public class VolumeStateListener implements StateListener<State, Event, Volume> {
protected static EventBus s_eventBus = null;
protected ConfigurationDao _configDao;
protected VMInstanceDao _vmInstanceDao;
private static final Logger s_logger = Logger.getLogger(VolumeStateListener.class);
public VolumeStateListener(ConfigurationDao configDao, VMInstanceDao vmInstanceDao) {
this._configDao = configDao;
this._vmInstanceDao = vmInstanceDao;
}
@Override
public boolean preStateTransitionEvent(State oldState, Event event, State newState, Volume vo, boolean status, Object opaque) {
pubishOnEventBus(event.name(), "preStateTransitionEvent", vo, oldState, newState);
return true;
}
@Override
public boolean postStateTransitionEvent(StateMachine2.Transition<State, Event> transition, Volume vol, boolean status, Object opaque) {
pubishOnEventBus(transition.getEvent().name(), "postStateTransitionEvent", vol, transition.getCurrentState(), transition.getToState());
if(transition.isImpacted(StateMachine2.Transition.Impact.USAGE)) {
Long instanceId = vol.getInstanceId();
VMInstanceVO vmInstanceVO = null;
if(instanceId != null) {
vmInstanceVO = _vmInstanceDao.findById(instanceId);
}
if(instanceId == null || vmInstanceVO.getType() == VirtualMachine.Type.User) {
if (transition.getToState() == State.Ready) {
if (transition.getCurrentState() == State.Resizing) {
// Log usage event for volumes belonging user VM's only
UsageEventUtils.publishUsageEvent(EventTypes.EVENT_VOLUME_RESIZE, vol.getAccountId(), vol.getDataCenterId(), vol.getId(), vol.getName(),
vol.getDiskOfferingId(), vol.getTemplateId(), vol.getSize(), Volume.class.getName(), vol.getUuid());
} else {
UsageEventUtils.publishUsageEvent(EventTypes.EVENT_VOLUME_CREATE, vol.getAccountId(), vol.getDataCenterId(), vol.getId(), vol.getName(), vol.getDiskOfferingId(), null, vol.getSize(),
Volume.class.getName(), vol.getUuid(), vol.isDisplayVolume());
}
} else if (transition.getToState() == State.Destroy && vol.getVolumeType() != Volume.Type.ROOT) { //Do not Publish Usage Event for ROOT Disk as it would have been published already while destroying a VM
UsageEventUtils.publishUsageEvent(EventTypes.EVENT_VOLUME_DELETE, vol.getAccountId(), vol.getDataCenterId(), vol.getId(), vol.getName(),
Volume.class.getName(), vol.getUuid(), vol.isDisplayVolume());
} else if (transition.getToState() == State.Uploaded) {
//Currently we are not capturing Usage for Secondary Storage so Usage for this operation will be captured when it is moved to primary storage
}
}
}
return true;
}
private void pubishOnEventBus(String event, String status, Volume vo, State oldState, 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(Volume.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) {
s_logger.warn("Failed to 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;
}
}