public void shutdown(boolean join) {
shutdown = true;
if (q2Thread != null) {
log.info("shutting down");
q2Thread.interrupt();
if (join) {
try {
q2Thread.join();
log.info("shutdown done");
} catch (InterruptedException e) {
log.warn(e);
}
}
}
q2Thread = null;
}
public Q2(String[] args) {
super();
this.args = args;
startTime = System.currentTimeMillis();
instanceId = UUID.randomUUID();
parseCmdLine(args);
libDir = new File(deployDir, "lib");
dirMap = new TreeMap();
deployDir.mkdirs();
mainClassLoader = Thread.currentThread().getContextClassLoader();
}
public void relax(long sleep) {
try {
Thread.sleep(sleep);
} catch (InterruptedException e) {
}
}
public void run() {
started = true;
Thread.currentThread().setName("Q2-" + getInstanceId().toString());
try {
/*
* The following code determines whether a MBeanServer exists
* already. If so then the first one in the list is used.
* I have not yet find a way to interrogate the server for
* information other than MBeans so to pick a specific one
* would be difficult.
*/
ArrayList mbeanServerList = MBeanServerFactory.findMBeanServer(null);
if (mbeanServerList.isEmpty()) {
server = MBeanServerFactory.createMBeanServer(JMX_NAME);
} else {
server = (MBeanServer) mbeanServerList.get(0);
}
final ObjectName loaderName = new ObjectName(Q2_CLASS_LOADER);
try {
loader =
(QClassLoader)
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
return new QClassLoader(server, libDir, loaderName, mainClassLoader);
}
});
server.registerMBean(loader, loaderName);
loader = loader.scan(false);
} catch (Throwable t) {
if (log != null) log.error("initial-scan", t);
else t.printStackTrace();
}
factory = new QFactory(loaderName, this);
initSystemLogger();
addShutdownHook();
q2Thread = Thread.currentThread();
q2Thread.setContextClassLoader(loader);
if (cli != null) cli.start();
initConfigDecorator();
for (int i = 1; !shutdown; i++) {
try {
boolean forceNewClassLoader = scan();
QClassLoader oldClassLoader = loader;
loader = loader.scan(forceNewClassLoader);
if (loader != oldClassLoader) {
oldClassLoader = null; // We want't this to be null so it gets GCed.
System.gc(); // force a GC
log.info(
"new classloader ["
+ Integer.toString(loader.hashCode(), 16)
+ "] has been created");
}
deploy();
checkModified();
relax(SCAN_INTERVAL);
if (i % (3600000 / SCAN_INTERVAL) == 0) logVersion();
} catch (Throwable t) {
log.error("start", t);
relax();
}
}
undeploy();
try {
server.unregisterMBean(loaderName);
} catch (InstanceNotFoundException e) {
log.error(e);
}
if (decorator != null) {
decorator.uninitialize();
}
if (exit && !shuttingDown) System.exit(0);
} catch (Exception e) {
if (log != null) log.error(e);
else e.printStackTrace();
System.exit(1);
}
}