org.mule.module.launcher.ConfigChangeMonitorThreadFactory Maven / Gradle / Ivy
/*
* 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.module.launcher;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
/**
* A slightly tweaked default thread factory that uses the following pattern:
* [%s].config.change.%d.thread.%d, where %s stands for application name,
* the next number will tell one how many redeployments this app had during this container's
* lifetime and the last digit, thread count, should always be 1. Left there for debugging
* purposes to quickly locate any duplicate threads trying to perform a redeploy.
*/
public class ConfigChangeMonitorThreadFactory implements ThreadFactory
{
static final AtomicInteger poolNumber = new AtomicInteger(1);
final ThreadGroup group;
final AtomicInteger threadNumber = new AtomicInteger(1);
final String namePrefix;
final String appName;
public ConfigChangeMonitorThreadFactory(String appName)
{
this.appName = appName;
SecurityManager s = System.getSecurityManager();
group = (s != null) ? s.getThreadGroup() :
Thread.currentThread().getThreadGroup();
namePrefix = String.format("[%s].config.change.%d.thread.", appName, poolNumber.getAndIncrement());
}
public Thread newThread(Runnable r)
{
Thread t = new Thread(group, r,
namePrefix + threadNumber.getAndIncrement(),
0);
if (t.isDaemon())
{
t.setDaemon(false);
}
if (t.getPriority() != Thread.NORM_PRIORITY)
{
t.setPriority(Thread.NORM_PRIORITY);
}
return t;
}
}