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package com.sun.enterprise.deployment.backend;
import java.util.Map;
import java.util.Hashtable;
import java.util.logging.Level;
import com.sun.enterprise.util.i18n.StringManager;
/**
* All client jar file are created in a separate thread when the client
* jar file is not requested at deployment time. These threads are
* registered in this singleton registry so that when client jar files are
* requested from the deployment clients, we check if the client jar
* file is not in the process of being created.
*
* @author Jerome Dochez
*/
public class ClientJarMakerRegistry {
// I am a singleton class
private static ClientJarMakerRegistry theRegistry;
// the registered client jar creator threads
Map registeredThreads=null;
/** Creates a new instance of ClientJarMakerRegistry */
protected ClientJarMakerRegistry() {
// I use hashtable since it needs to synchronized
registeredThreads = new Hashtable();
}
/**
* @return the singleton instance of ClientJarMakerRegistry
*/
public synchronized static ClientJarMakerRegistry getInstance() {
if (theRegistry==null) {
theRegistry = new ClientJarMakerRegistry();
}
return theRegistry;
}
/**
* Register a new thread in the registry
* @param the module ID we are creating the client jar for
* @param the thread object responsible for creating the
* client jar file
*/
public void register(String moduleID, Thread clientJarMaker) {
registeredThreads.put(moduleID, clientJarMaker);
}
/**
* @return true if the passed module ID has a registered thread
*/
public boolean isRegistered(String moduleID) {
return registeredThreads.containsKey(moduleID);
}
/**
* Unregister a thread in the registry. This is done when the
* thread has finished its execution
* @param the module ID identifying the module this thread was
* creating the client jar for.
*/
public void unregister(String moduleID) {
registeredThreads.remove(moduleID);
}
/**
* wait for a particular thread maker to finish process before
* returning
*/
public void waitForCompletion(String moduleID) {
Thread maker = (Thread) registeredThreads.get(moduleID);
if (maker==null)
return;
try {
maker.join();
} catch(InterruptedException e) {
StringManager localStrings = StringManager.getManager( ClientJarMakerRegistry.class );
DeploymentLogger.get().log(Level.SEVERE,
localStrings.getString("enterprise.deployment.error_creating_client_jar",
e.getLocalizedMessage()) ,e);
}
return;
}
}