/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.module.artifact.serializer;
import static java.lang.String.format;
import static org.mule.runtime.api.util.Preconditions.checkArgument;
import static org.mule.runtime.core.util.IOUtils.toByteArray;
import org.mule.runtime.api.streaming.bytes.CursorStream;
import org.mule.runtime.api.streaming.bytes.CursorStreamProvider;
import org.mule.runtime.core.api.serialization.AbstractSerializationProtocol;
import org.mule.runtime.core.api.serialization.SerializationException;
import org.mule.runtime.module.artifact.classloader.ClassLoaderRepository;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
/**
* Custom serialization protocol that uses {@link ArtifactClassLoaderObjectInputStream} and {@link ArtifactClassLoaderObjectOutputStream}
* to write and read serialized objects to support deserialization of non exported classes.
*/
public class CustomJavaSerializationProtocol extends AbstractSerializationProtocol {
private final ClassLoaderRepository classLoaderRepository;
/**
* Creates a new serialization protocol to serialize/deserialize classes provided by any class loader
* defined in the provided class loader repository.
* @param classLoaderRepository contains the registered classloaders that can be used to load serialized classes. Non null.
*
*/
public CustomJavaSerializationProtocol(ClassLoaderRepository classLoaderRepository) {
checkArgument(classLoaderRepository != null, "artifactClassLoaderRepository cannot be null");
this.classLoaderRepository = classLoaderRepository;
}
/**
* {@inheritDoc}
*/
@Override
protected byte[] doSerialize(Object object) throws Exception {
//TODO: MULE-11939
if (object instanceof CursorStreamProvider) {
try (CursorStream cursor = ((CursorStreamProvider) object).openCursor()) {
object = toByteArray(cursor);
}
}
validateForSerialization(object);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(512);
try (ObjectOutputStream out = new ArtifactClassLoaderObjectOutputStream(classLoaderRepository, outputStream)) {
out.writeObject(object);
} catch (IOException ex) {
throw new SerializationException("Cannot serialize object", ex);
}
return outputStream.toByteArray();
}
/**
* {@inheritDoc}
*/
@Override
protected <T> T doDeserialize(InputStream inputStream, ClassLoader classLoader) throws Exception {
checkArgument(inputStream != null, "Cannot deserialize a null stream");
checkArgument(classLoader != null, "Cannot deserialize with a null classloader");
try (ObjectInputStream in = new ArtifactClassLoaderObjectInputStream(classLoaderRepository, inputStream)) {
Object obj = in.readObject();
return (T) obj;
} catch (Exception ex) {
throw new SerializationException("Cannot deserialize object", ex);
}
}
private void validateForSerialization(Object object) {
if (object != null && !(object instanceof Serializable)) {
throw new SerializationException(format("Was expecting a Serializable type. %s was found instead",
object.getClass().getName()));
}
}
}