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package com.sun.enterprise.appclient.jws;
import com.sun.enterprise.config.ConfigBean;
import com.sun.enterprise.config.ConfigBeansFactory;
import com.sun.enterprise.config.serverbeans.Applications;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.J2eeApplication;
import com.sun.enterprise.config.serverbeans.ServerXPathHelper;
import com.sun.enterprise.deployment.Application;
import com.sun.enterprise.deployment.ApplicationClientDescriptor;
import com.sun.enterprise.deployment.BundleDescriptor;
import com.sun.enterprise.deployment.runtime.JavaWebStartAccessDescriptor;
import com.sun.enterprise.deployment.util.ModuleDescriptor;
import com.sun.enterprise.server.event.ApplicationClientEvent;
import com.sun.enterprise.server.event.ApplicationClientLoaderEventListener;
import com.sun.enterprise.server.event.ApplicationEvent;
import com.sun.enterprise.server.event.ApplicationLoaderEventListener;
import com.sun.enterprise.server.event.ApplicationLoaderEventNotifier;
import com.sun.logging.LogDomains;
import java.io.IOException;
import java.util.Iterator;
import java.util.Vector;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.enterprise.deploy.shared.ModuleType;
/**
*Singleton that keeps the AppclientJWSSupportInfo up-to-date as applications and app clients
*are loaded and unloaded and as the administrator enables and disables
*Java Web Start access to them.
*
* @author tjquinn
*/
public class AppclientJWSSupportManager implements ApplicationLoaderEventListener, ApplicationClientLoaderEventListener {
private static Logger _logger=LogDomains.getLogger(LogDomains.SERVER_LOGGER);
/** the singleton instance */
private static AppclientJWSSupportManager instance;
/** the data structure shared with the system web app */
private AppclientJWSSupportInfo jwsInfo;
/** system property name used to turn off JWS feature */
private static final String JWS_FEATURE_ON_PROPERTY_NAME = "com.sun.aas.jws.featureon";
/** indicates if JWS handling is turned on or off via property */
private final boolean isJWSFeatureOn = Boolean.valueOf(System.getProperty(JWS_FEATURE_ON_PROPERTY_NAME, "true"));
/**
*Returns the singleton instance.
*@return the instance of the manager
*/
public synchronized static AppclientJWSSupportManager getInstance() {
if (instance == null) {
instance = new AppclientJWSSupportManager();
if (instance.isJWSFeatureOn) {
try {
/*
*Obtain the data structure object.
*/
instance.jwsInfo = AppclientJWSSupportInfo.getInstance();
} catch (IOException ioe) {
_logger.log(Level.SEVERE, "Error initializing Java Web Start support information", ioe);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
return instance;
}
/**
*Register all deployed appclients with JWS service. This will be called by
*OnDemand initialization framework, when webcontainer starts.
*/
public void startJWSServicesForDeployedAppclients() {
jwsInfo.startJWSServicesForDeployedAppclients();
}
/** Creates a new instance of AppclientJWSSupportManager */
private AppclientJWSSupportManager() {
/**
*If the JWS feature is turned on (the default), register this object
*as a listener for app loader and app client loader events.
*/
if (isJWSFeatureOn) {
ApplicationLoaderEventNotifier.getInstance().addListener((ApplicationLoaderEventListener) this);
ApplicationLoaderEventNotifier.getInstance().addListener((ApplicationClientLoaderEventListener) this);
} else {
_logger.info("Java Web Start support turned off by " + JWS_FEATURE_ON_PROPERTY_NAME);
}
}
/**
*Responds to an application-related event broadcast by the instance.
*@param the ApplicationEvent describing what has happened
*/
public void handleApplicationEvent(ApplicationEvent event) {
/*
*Respond to after-load or before-unload events.
*/
int eventType = event.getEventType();
if ((eventType == event.BEFORE_APPLICATION_LOAD) ||
(eventType == event.AFTER_APPLICATION_UNLOAD) ) {
return;
}
/*
*Get the module descriptors (if any) for eligible nested app clients.
*If there are any, start Java Web Start services for this app and
*those eligible app clients.
*/
Application app = event.getApplication();
ModuleDescriptor [] mds = NamingConventions.getEligibleAppclientModuleDescriptors(app);
if (mds.length > 0) {
try {
if (eventType == event.AFTER_APPLICATION_LOAD) {
jwsInfo.startJWSServicesForApplication(app, mds, event.getConfigContext());
} else if (eventType == event.BEFORE_APPLICATION_UNLOAD) {
jwsInfo.endJWSServicesForApplication(app, mds, event.getConfigContext());
}
} catch (Throwable thr) {
_logger.log(Level.SEVERE, "Error updating Java Web Start information for application " + app.getRegistrationName(), thr);
}
}
}
/**
*No-op implementation needed to conform to the interface.
*/
public void handleEjbContainerEvent(com.sun.enterprise.server.event.EjbContainerEvent ejbContainerEvent) {
}
/**
*Responds to app client events broadcast by the instance.
*@param the event describing what has happened
*/
public void handleApplicationClientEvent(ApplicationClientEvent event) {
/*
*Respond to after-load or before-unload events.
*/
int eventType = event.getEventType();
if ((eventType == event.BEFORE_APPLICATION_CLIENT_LOAD) ||
(eventType == event.AFTER_APPLICATION_CLIENT_UNLOAD) ) {
return;
}
/*
*Find out if this app client is eligible for Java Web Start access.
*/
Application app = event.getApplication();
/*
*The Application object wraps the app client, so there should be only
*a single nested module (at most) representing the app client itself.
*/
ModuleDescriptor [] mds = NamingConventions.getEligibleAppclientModuleDescriptors(app);
if (mds.length > 1) {
_logger.warning("During app client loading, expected exactly one app client module in the wrapping application but found more; using the first one and ignoring the others");
} else if (mds.length == 0) {
_logger.warning("During app client loading, expected exactly one app client module in the wrapping application but found none; ignoring this app client and continuing");
return;
}
try {
if (eventType == event.AFTER_APPLICATION_CLIENT_LOAD) {
jwsInfo.startJWSServicesForAppclient(app, mds[0], event.getConfigContext());
} else if (eventType == event.BEFORE_APPLICATION_CLIENT_UNLOAD) {
jwsInfo.endJWSServicesForAppclient(app, mds[0], event.getConfigContext());
}
} catch (Throwable thr) {
_logger.log(Level.SEVERE, "Error updating Java Web Start information for app client " + app.getRegistrationName(), thr);
}
}
}
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