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package org.glassfish.internal.data;
import org.glassfish.api.container.Sniffer;
import org.glassfish.api.container.Container;
import org.glassfish.api.deployment.Deployer;
import org.glassfish.api.deployment.ApplicationContainer;
import org.glassfish.api.deployment.DeploymentContext;
import org.jvnet.hk2.component.Inhabitant;
import org.glassfish.internal.data.ApplicationInfo;
import org.glassfish.internal.deployment.ExtendedDeploymentContext;
import java.util.*;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
/**
* This class holds information about a particular container such as a reference
* to the sniffer, the container itself and the list of applications deployed in
* that container.
*
* @author Jerome Dochez
*/
public class EngineInfo<T extends Container, U extends ApplicationContainer> {
final Inhabitant<T> container;
final Sniffer sniffer;
ContainerRegistry registry = null;
Map<WeakReference<Thread>, Set<Integer>> addedThreadLocals = new HashMap();
Deployer deployer;
/**
* Creates a new ContractProvider info with references to the container, the sniffer
* and the connector module implementing the ContractProvider/Deployer interfaces.
*
* @param container instance of the container
* @param sniffer sniffer associated with that container
*/
public EngineInfo(Inhabitant<T> container, Sniffer sniffer, ClassLoader cloader) {
this.container = container;
this.sniffer = sniffer;
}
/**
* Returns the container instance
* @return the container instance
*/
public T getContainer() {
return container.get();
}
/**
* Returns the sniffer associated with this container
* @return the sniffer instance
*/
public Sniffer getSniffer() {
return sniffer;
}
/**
* Returns the deployer instance for this container
*
* @return Deployer instance
*/
public Deployer<T, U> getDeployer() {
return deployer;
}
/**
* Sets the deployer associated with this container
*
* @param deployer
*/
public void setDeployer(Deployer<T, U> deployer) {
this.deployer = deployer;
}
public void load(ExtendedDeploymentContext context) {
}
public void unload(ExtendedDeploymentContext context) throws Exception {
}
public void clean(ExtendedDeploymentContext context) throws Exception {
getDeployer().clean(context);
cleanup();
}
/*
* Sets the registry this container belongs to
* @param the registry owning me
*/
public void setRegistry(ContainerRegistry registry) {
this.registry = registry;
}
/**
* Adds number of threadlocal hashcodes
*/
public synchronized void addThreadLocal(Thread t, Set<Integer> newEntries) {
Set<Integer> existingEntries = null;
for (Map.Entry<WeakReference<Thread>, Set<Integer>> entry : addedThreadLocals.entrySet()) {
if (entry != null && entry.getKey() != null && entry.getKey().get()!=null) {
if (entry.getKey().get().equals(t)) {
// found our guy
existingEntries = entry.getValue();
break;
}
} else {
// thread is dead, cleanup since we are at it.
addedThreadLocals.remove(entry.getKey());
}
}
if (existingEntries==null) {
existingEntries = new HashSet();
addedThreadLocals.put(new WeakReference(t), existingEntries);
}
existingEntries.addAll(newEntries);
}
private void cleanup() {
for (Map.Entry<WeakReference<Thread>, Set<Integer>> entry : addedThreadLocals.entrySet()) {
if (entry.getKey().get()!=null) {
try {
Field threadLocalsField = Thread.class.getDeclaredField("threadLocals");
threadLocalsField.setAccessible(true);
Class c = Class.forName("java.lang.ThreadLocal$ThreadLocalMap");
Field tableField = c.getDeclaredField("table");
Method remove = c.getDeclaredMethod("remove", ThreadLocal.class);
tableField.setAccessible(true);
c = Class.forName("java.lang.ThreadLocal$ThreadLocalMap$Entry");
Field value = c.getDeclaredField("value");
value.setAccessible(true);
Thread t = entry.getKey().get();
Object threadLocals = threadLocalsField.get(t);
WeakReference<ThreadLocal>[] table = (WeakReference<ThreadLocal>[]) tableField.get(threadLocals);
int len = table.length;
for (int j = 0; j < len; j++) {
WeakReference<ThreadLocal> e = table[j];
if (e != null) {
remove.invoke(threadLocalsField, e.get());
System.out.println("Removed " + value.get(e));
}
}
} catch(NoSuchFieldException e) {
e.printStackTrace();
} catch(ClassNotFoundException e) {
e.printStackTrace();
} catch(IllegalAccessException e) {
e.printStackTrace();
} catch(NoSuchMethodException e) {
e.printStackTrace();
} catch(InvocationTargetException e) {
e.printStackTrace();
}
}
}
}
// Todo : take care of Deployer when unloading...
public void stop(Logger logger)
{
if (getDeployer()!=null) {
Inhabitant i = registry.habitat.getInhabitantByType(getDeployer().getClass());
if (i!=null) {
i.release();
}
}
if (getContainer()!=null) {
Inhabitant i = registry.habitat.getInhabitantByType(getContainer().getClass());
if (i!=null) {
i.release();
}
}
registry.removeContainer(this);
if (logger.isLoggable(Level.FINE)) {
logger.fine("Container " + getContainer().getName() + " stopped");
}
}
}