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package com.sun.enterprise.naming.util;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.ServiceReference;
import org.osgi.service.packageadmin.PackageAdmin;
import org.osgi.util.tracker.BundleTracker;
import org.osgi.util.tracker.BundleTrackerCustomizer;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.IOException;
import java.io.ObjectStreamClass;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* @author [email protected]
*/
public class OSGiObjectInputOutputStreamFactoryImpl
implements ObjectInputOutputStreamFactory
{
private BundleContext ctx;
PackageAdmin pkgAdm;
static Logger _logger = LogFacade.getLogger();
private ConcurrentHashMap name2Id = new ConcurrentHashMap();
// Since bundle id starts with 0, we use -1 to indicate a non-bundle
private static final long NOT_A_BUNDLE_ID = -1;
private static final String NOT_A_BUNDLE_KEY = ":";
public OSGiObjectInputOutputStreamFactoryImpl(BundleContext ctx)
{
this.ctx = ctx;
ServiceReference ref = ctx.getServiceReference(PackageAdmin.class.getName());
pkgAdm = PackageAdmin.class.cast(ctx.getService(ref));
BundleTracker bt = new BundleTracker(ctx, Bundle.INSTALLED | Bundle.RESOLVED | Bundle.STARTING | Bundle.ACTIVE, new BundleTrackerCustomizer() {
@Override
public void modifiedBundle(Bundle bundle, BundleEvent bundleEvent, Object o) {
}
@Override
public Object addingBundle(Bundle bundle, BundleEvent bundleEvent) {
String key = makeKey(bundle);
name2Id.put(key, bundle.getBundleId());
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "BundleTracker.addingBundle BUNDLE " + key + " ==> " + bundle.getBundleId() + " for " + bundle.getSymbolicName());
}
return null;
}
@Override
public void removedBundle(Bundle bundle, BundleEvent bundleEvent, Object o) {
String key = makeKey(bundle);
Long bundleID = name2Id.remove(key);
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "BundleTracker.removedBundle BUNDLE " + key + " ==> " + bundle.getSymbolicName());
}
if (bundleID == null) {
_logger.log(Level.WARNING, "BundleTracker.removedBundle null bundleID for ==> " + key);
}
}
/*
@Override
public Object addingBundle(Bundle bundle, BundleEvent event) {
System.out.println("ADDING BUNDLE ==> " + bundle.getSymbolicName());
return super.addingBundle(bundle, event); //To change body of overridden methods use File | Settings | File Templates.
}
@Override
public void removedBundle(Bundle bundle, BundleEvent event, Object object) {
System.out.println("REMOVING BUNDLE ==> " + bundle.getSymbolicName());
super.removedBundle(bundle, event, object); //To change body of overridden methods use File | Settings | File Templates.
}
*/
});
bt.open();
}
private String makeKey(Bundle bundle) {
return bundle.getSymbolicName() + ":" + bundle.getVersion();
}
public ObjectInputStream createObjectInputStream(InputStream in)
throws IOException
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return new OSGiObjectInputStream(in, loader);
}
public ObjectOutputStream createObjectOutputStream(OutputStream out)
throws IOException
{
return new OSGiObjectOutputStream(out);
}
private class OSGiObjectInputStream extends ObjectInputStreamWithLoader
{
public OSGiObjectInputStream(InputStream in, ClassLoader loader) throws IOException
{
super(in, loader);
}
@Override
protected Class resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
Class clazz =
OSGiObjectInputOutputStreamFactoryImpl.this.resolveClass(this, desc);
if (clazz == null) {
clazz = super.resolveClass(desc);
}
return clazz;
}
}
private class OSGiObjectOutputStream extends ObjectOutputStream {
private OSGiObjectOutputStream(OutputStream out) throws IOException
{
super(out);
}
@Override
protected void annotateClass(Class cl) throws IOException
{
OSGiObjectInputOutputStreamFactoryImpl.this.annotateClass(this, cl);
}
}
public Class resolveClass(ObjectInputStream in, final ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
String key = in.readUTF();
if (! NOT_A_BUNDLE_KEY.equals(key)) {
Long bundleId = name2Id.get(key);
if (bundleId != null) {
final Bundle b = ctx.getBundle(bundleId);
if (System.getSecurityManager() == null) {
return b.loadClass(desc.getName());
} else {
try {
return (Class) java.security.AccessController.doPrivileged(
new java.security.PrivilegedExceptionAction() {
public java.lang.Object run() throws ClassNotFoundException {
return b.loadClass(desc.getName());
}
});
} catch (java.security.PrivilegedActionException pae) {
throw (ClassNotFoundException) pae.getException();
}
}
}
}
return null;
}
public void annotateClass(ObjectOutputStream out, Class cl) throws IOException
{
String key = NOT_A_BUNDLE_KEY;
Bundle b = pkgAdm.getBundle(cl);
if (b != null) {
key = makeKey(b);
}
out.writeUTF(key);
}
}
