package org.infinispan.marshall.jboss;
import org.infinispan.CacheException;
import org.infinispan.io.ByteBuffer;
import org.infinispan.io.ExposedByteArrayOutputStream;
import org.infinispan.marshall.AbstractMarshaller;
import org.infinispan.marshall.Marshaller;
import org.infinispan.util.Util;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import org.jboss.marshalling.ContextClassResolver;
import org.jboss.marshalling.ExceptionListener;
import org.jboss.marshalling.MarshallerFactory;
import org.jboss.marshalling.Marshalling;
import org.jboss.marshalling.MarshallingConfiguration;
import org.jboss.marshalling.TraceInformation;
import org.jboss.marshalling.Unmarshaller;
import org.jboss.marshalling.reflect.SunReflectiveCreator;
import java.io.ByteArrayInputStream;
import java.io.Externalizable;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.OutputStream;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.net.URL;
/**
* A marshaller that makes use of <a href="http://www.jboss.org/jbossmarshalling">JBoss Marshalling</a> to serialize
* and deserialize objects.
* <p />
* In addition to making use of JBoss Marshalling, this Marshaller
* @author Manik Surtani
* @version 4.1
* @see http://www.jboss.org/jbossmarshalling
*/
public class GenericJBossMarshaller extends AbstractMarshaller {
protected static final Log log = LogFactory.getLog(JBossMarshaller.class);
protected static final String DEFAULT_MARSHALLER_FACTORY = "org.jboss.marshalling.river.RiverMarshallerFactory";
protected ClassLoader defaultCl = this.getClass().getClassLoader();
protected MarshallingConfiguration configuration;
protected MarshallerFactory factory;
public GenericJBossMarshaller() {
factory = (MarshallerFactory) Util.getInstance(DEFAULT_MARSHALLER_FACTORY);
configuration = new MarshallingConfiguration();
configuration.setCreator(new SunReflectiveCreator());
configuration.setExceptionListener(new DebuggingExceptionListener());
// ContextClassResolver provides same functionality as MarshalledValueInputStream
configuration.setClassResolver(new ContextClassResolver());
configuration.setVersion(2);
}
/**
* Marshaller thread local. JBossMarshaller is a singleton shared by all caches (global component), so no urgent need
* for static here. JBMAR clears pretty much any state during finish(), so no urgent need to clear the thread local
* since it shouldn't be leaking.
*/
private ThreadLocal<org.jboss.marshalling.Marshaller> marshallerTL = new ThreadLocal<org.jboss.marshalling.Marshaller>() {
@Override
protected org.jboss.marshalling.Marshaller initialValue() {
try {
return factory.createMarshaller(configuration);
} catch (IOException e) {
throw new CacheException(e);
}
}
};
/**
* Unmarshaller thread local. JBossMarshaller is a singleton shared by all caches (global component), so no urgent
* need for static here. JBMAR clears pretty much any state during finish(), so no urgent need to clear the thread
* local since it shouldn't be leaking.
*/
private ThreadLocal<Unmarshaller> unmarshallerTL = new ThreadLocal<Unmarshaller>() {
@Override
protected Unmarshaller initialValue() {
try {
return factory.createUnmarshaller(configuration);
} catch (IOException e) {
throw new CacheException(e);
}
}
};
public void objectToObjectStream(Object obj, ObjectOutput out) throws IOException {
ClassLoader toUse = defaultCl;
Thread current = Thread.currentThread();
ClassLoader old = current.getContextClassLoader();
if (old != null) toUse = old;
try {
current.setContextClassLoader(toUse);
out.writeObject(obj);
}
finally {
current.setContextClassLoader(old);
}
}
@Override
protected ByteBuffer objectToBuffer(Object o, int estimatedSize) throws IOException {
ExposedByteArrayOutputStream baos = new ExposedByteArrayOutputStream(estimatedSize);
ObjectOutput marshaller = startObjectOutput(baos, false);
try {
objectToObjectStream(o, marshaller);
} finally {
finishObjectOutput(marshaller);
}
return new ByteBuffer(baos.getRawBuffer(), 0, baos.size());
}
public ObjectOutput startObjectOutput(OutputStream os, boolean isReentrant) throws IOException {
org.jboss.marshalling.Marshaller marshaller;
if (isReentrant) {
marshaller = factory.createMarshaller(configuration);
} else {
marshaller = marshallerTL.get();
}
marshaller.start(Marshalling.createByteOutput(os));
return marshaller;
}
public void finishObjectOutput(ObjectOutput oo) {
try {
((org.jboss.marshalling.Marshaller) oo).finish();
} catch (IOException ioe) {
}
}
@Override
public Object objectFromByteBuffer(byte[] buf, int offset, int length) throws IOException,
ClassNotFoundException {
ByteArrayInputStream is = new ByteArrayInputStream(buf, offset, length);
ObjectInput unmarshaller = startObjectInput(is, false);
Object o = null;
try {
o = objectFromObjectStream(unmarshaller);
} finally {
finishObjectInput(unmarshaller);
}
return o;
}
public ObjectInput startObjectInput(InputStream is, boolean isReentrant) throws IOException {
Unmarshaller unmarshaller;
if (isReentrant) {
unmarshaller = factory.createUnmarshaller(configuration);
} else {
unmarshaller = unmarshallerTL.get();
}
unmarshaller.start(Marshalling.createByteInput(is));
return unmarshaller;
}
public Object objectFromObjectStream(ObjectInput in) throws IOException, ClassNotFoundException {
return in.readObject();
}
public void finishObjectInput(ObjectInput oi) {
try {
if (oi != null) ((Unmarshaller) oi).finish();
} catch (IOException e) {
}
}
@Override
public boolean isMarshallable(Object o) {
return (o instanceof Serializable || o instanceof Externalizable);
}
protected static class DebuggingExceptionListener implements ExceptionListener {
private static final URL[] EMPTY_URLS = {};
private static final Class[] EMPTY_CLASSES = {};
private static final Object[] EMPTY_OBJECTS = {};
@Override
public void handleMarshallingException(Throwable problem, Object subject) {
if (log.isDebugEnabled()) {
TraceInformation.addUserInformation(problem, "toString = " + subject.toString());
}
}
@Override
public void handleUnmarshallingException(Throwable problem, Class<?> subjectClass) {
if (log.isDebugEnabled()) {
StringBuilder builder = new StringBuilder();
ClassLoader cl = subjectClass.getClassLoader();
builder.append("classloader hierarchy:");
ClassLoader parent = cl;
while (parent != null) {
if (parent.equals(cl)) {
builder.append("\n\t\t-> type classloader = ").append(parent);
} else {
builder.append("\n\t\t-> parent classloader = ").append(parent);
}
URL[] urls = getClassLoaderURLs(parent);
if (urls != null) {
for (URL u : urls) builder.append("\n\t\t->...").append(u);
}
parent = parent.getParent();
}
TraceInformation.addUserInformation(problem, builder.toString());
}
}
@Override
public void handleUnmarshallingException(Throwable problem) {
// no-op
}
private static URL[] getClassLoaderURLs(ClassLoader cl) {
URL[] urls = EMPTY_URLS;
try {
Class returnType = urls.getClass();
Class[] parameterTypes = EMPTY_CLASSES;
Method getURLs = cl.getClass().getMethod("getURLs", parameterTypes);
if (returnType.isAssignableFrom(getURLs.getReturnType())) {
Object[] args = EMPTY_OBJECTS;
urls = (URL[]) getURLs.invoke(cl, args);
}
} catch (Exception ignore) {
}
return urls;
}
}
}