/*
* $Id: FlowConstructLifecycleManager.java 20321 2010-11-24 15:21:24Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.construct;
import org.mule.api.MuleContext;
import org.mule.api.MuleException;
import org.mule.api.construct.FlowConstruct;
import org.mule.api.lifecycle.Disposable;
import org.mule.api.lifecycle.Initialisable;
import org.mule.api.lifecycle.LifecycleCallback;
import org.mule.api.lifecycle.Startable;
import org.mule.api.lifecycle.Stoppable;
import org.mule.context.notification.FlowConstructNotification;
import org.mule.lifecycle.SimpleLifecycleManager;
import org.mule.service.Pausable;
import org.mule.service.Resumable;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* The lifecycle manager responsible for managing lifecycle transitions for a Mule service. The Mule service adds some additional
* states, namely pause and resume. The lifecycle manager manages lifecycle notifications and logging as well.
*/
public class FlowConstructLifecycleManager extends SimpleLifecycleManager<FlowConstruct>
{
/**
* logger used by this class
*/
protected transient final Log logger = LogFactory.getLog(FlowConstructLifecycleManager.class);
protected MuleContext muleContext;
public FlowConstructLifecycleManager(FlowConstruct flowConstruct, MuleContext muleContext)
{
super(flowConstruct.getName(), flowConstruct);
this.muleContext = muleContext;
}
@Override
protected void registerTransitions()
{
super.registerTransitions();
//pause resume
addDirectTransition(Startable.PHASE_NAME, Pausable.PHASE_NAME);
//Note that 'Resume' state gets removed and the current state is set to 'start'. See {@link #notifyTransition}
addDirectTransition(Pausable.PHASE_NAME, Resumable.PHASE_NAME);
addDirectTransition(Pausable.PHASE_NAME, Stoppable.PHASE_NAME);
}
@Override
protected void notifyTransition(String currentPhase)
{
if (currentPhase.equals(Resumable.PHASE_NAME))
{
//Revert back to start phase
completedPhases.remove(Resumable.PHASE_NAME);
completedPhases.remove(Pausable.PHASE_NAME);
setCurrentPhase(Startable.PHASE_NAME);
}
}
@Override
public void fireInitialisePhase(LifecycleCallback<FlowConstruct> callback) throws MuleException
{
checkPhase(Initialisable.PHASE_NAME);
//TODO No pre notification
if (logger.isInfoEnabled())
{
logger.info("Initialising flow: " + getLifecycleObject().getName());
}
invokePhase(Initialisable.PHASE_NAME, getLifecycleObject(), callback);
fireNotification(FlowConstructNotification.FLOW_CONSTRUCT_INITIALISED);
}
@Override
public void fireStartPhase(LifecycleCallback<FlowConstruct> callback) throws MuleException
{
checkPhase(Startable.PHASE_NAME);
if (logger.isInfoEnabled())
{
logger.info("Starting flow: " + getLifecycleObject().getName());
}
//TODO No pre notification
invokePhase(Startable.PHASE_NAME, getLifecycleObject(), callback);
fireNotification(FlowConstructNotification.FLOW_CONSTRUCT_STARTED);
}
public void firePausePhase(LifecycleCallback<FlowConstruct> callback) throws MuleException
{
checkPhase(Pausable.PHASE_NAME);
if (logger.isInfoEnabled())
{
logger.info("Pausing flow: " + getLifecycleObject().getName());
}
//TODO No pre notification
invokePhase(Pausable.PHASE_NAME, getLifecycleObject(), callback);
fireNotification(FlowConstructNotification.FLOW_CONSTRUCT_PAUSED);
}
public void fireResumePhase(LifecycleCallback<FlowConstruct> callback) throws MuleException
{
checkPhase(Resumable.PHASE_NAME);
if (logger.isInfoEnabled())
{
logger.info("Resuming flow: " + getLifecycleObject().getName());
}
//TODO No pre notification
invokePhase(Resumable.PHASE_NAME, getLifecycleObject(), callback);
fireNotification(FlowConstructNotification.FLOW_CONSTRUCT_RESUMED);
}
@Override
public void fireStopPhase(LifecycleCallback<FlowConstruct> callback) throws MuleException
{
checkPhase(Stoppable.PHASE_NAME);
if (logger.isInfoEnabled())
{
logger.info("Stopping flow: " + getLifecycleObject().getName());
}
//TODO No pre notification
invokePhase(Stoppable.PHASE_NAME, getLifecycleObject(), callback);
fireNotification(FlowConstructNotification.FLOW_CONSTRUCT_STOPPED);
}
@Override
public void fireDisposePhase(LifecycleCallback<FlowConstruct> callback) throws MuleException
{
checkPhase(Disposable.PHASE_NAME);
if (logger.isInfoEnabled())
{
logger.info("Disposing flow: " + getLifecycleObject().getName());
}
//TODO No pre notification
invokePhase(Disposable.PHASE_NAME, getLifecycleObject(), callback);
fireNotification(FlowConstructNotification.FLOW_CONSTRUCT_DISPOSED);
}
protected void fireNotification(int action)
{
muleContext.fireNotification(new FlowConstructNotification(getLifecycleObject(), action));
}
}