package org.infinispan.marshall.jboss;
import org.infinispan.io.ByteBuffer;
import org.infinispan.io.ExposedByteArrayOutputStream;
import org.infinispan.marshall.AbstractMarshaller;
import org.infinispan.util.ConcurrentWeakKeyHashMap;
import org.infinispan.util.logging.BasicLogFactory;
import org.jboss.logging.BasicLogger;
import org.jboss.marshalling.ExceptionListener;
import org.jboss.marshalling.Marshaller;
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.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;
import java.util.concurrent.ConcurrentMap;
import static org.infinispan.util.ReflectionUtil.EMPTY_CLASS_ARRAY;
import static org.infinispan.util.Util.EMPTY_OBJECT_ARRAY;
/**
* Common parent for both embedded and standalone JBoss Marshalling-based marshallers.
*
* @author Galder Zamarreño
* @since 5.0
*/
public abstract class AbstractJBossMarshaller extends AbstractMarshaller {
protected static final BasicLogger log = BasicLogFactory.getLog(AbstractJBossMarshaller.class);
protected final MarshallingConfiguration baseCfg;
protected static final MarshallerFactory factory = new JBossMarshallerFactory();
/**
* Cache of classes that are considered to be marshallable. Since checking
* whether a type is marshallable requires attempting to marshalling them,
* a cache for the types that are known to be marshallable or not is
* advantageous.
*/
private final ConcurrentMap<Class, Boolean> isMarshallableMap = new ConcurrentWeakKeyHashMap<Class, Boolean>();
public AbstractJBossMarshaller() {
// Class resolver now set when marshaller/unmarshaller will be created
baseCfg = new MarshallingConfiguration();
baseCfg.setCreator(new SunReflectiveCreator());
baseCfg.setExceptionListener(new DebuggingExceptionListener());
baseCfg.setClassExternalizerFactory(new SerializeWithExtFactory());
baseCfg.setVersion(3);
}
public void objectToObjectStream(Object obj, ObjectOutput out) throws IOException {
out.writeObject(obj);
}
@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 = getMarshaller(isReentrant);
marshaller.start(Marshalling.createByteOutput(os));
return marshaller;
}
protected abstract Marshaller getMarshaller(boolean isReentrant) throws IOException;
public void finishObjectOutput(ObjectOutput oo) {
try {
if (log.isTraceEnabled())
log.trace("Stop marshaller");
((org.jboss.marshalling.Marshaller) oo).finish();
} catch (IOException ignored) {
}
}
@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 = getUnmarshaller(isReentrant);
if (log.isTraceEnabled())
log.tracef("Start unmarshaller after retrieving marshaller from %s",
isReentrant ? "factory" : "thread local");
unmarshaller.start(Marshalling.createByteInput(is));
return unmarshaller;
}
protected abstract Unmarshaller getUnmarshaller(boolean isReentrant) throws IOException;
public Object objectFromObjectStream(ObjectInput in) throws IOException, ClassNotFoundException {
return in.readObject();
}
public void finishObjectInput(ObjectInput oi) {
try {
if (log.isTraceEnabled())
log.trace("Stop unmarshaller");
if (oi != null) ((Unmarshaller) oi).finish();
} catch (IOException ignored) {
}
}
@Override
public boolean isMarshallable(Object o) throws Exception {
Class clazz = o.getClass();
Object isClassMarshallable = isMarshallableMap.get(clazz);
if (isClassMarshallable != null) {
return (Boolean) isClassMarshallable;
} else {
if (isMarshallableCandidate(o)) {
boolean isMarshallable = true;
try {
objectToBuffer(o);
} catch (Exception e) {
isMarshallable = false;
throw e;
} finally {
isMarshallableMap.putIfAbsent(clazz, isMarshallable);
}
return isMarshallable;
}
return false;
}
}
public void stop() {
// Clear class cache
isMarshallableMap.clear();
}
protected boolean isMarshallableCandidate(Object o) {
return o instanceof Serializable;
}
protected static class DebuggingExceptionListener implements ExceptionListener {
private static final URL[] EMPTY_URLS = {};
@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_CLASS_ARRAY;
Method getURLs = cl.getClass().getMethod("getURLs", parameterTypes);
if (returnType.isAssignableFrom(getURLs.getReturnType())) {
Object[] args = EMPTY_OBJECT_ARRAY;
urls = (URL[]) getURLs.invoke(cl, args);
}
} catch (Exception ignore) {
}
return urls;
}
}
}