org.mule.runtime.module.artifact.serializer.ArtifactClassLoaderObjectOutputStream Maven / Gradle / Ivy
/*
* 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 org.mule.runtime.module.artifact.classloader.ClassLoaderRepository;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.util.Optional;
/**
* Customized version of {@link ObjectOutputStream} that for each serialized object, writes the identifier of the classLoader that
* loaded the object's class.
*
* Is intended to be used along with {@link ArtifactClassLoaderObjectInputStream}.
*/
public class ArtifactClassLoaderObjectOutputStream extends ObjectOutputStream {
private final ClassLoaderRepository classLoaderRepository;
/**
* Creates a new output stream.
*
* @param classLoaderRepository contains the registered classloaders that can be used to load serialized classes. Non null.
* @param out output stream to write to
* @throws IOException if an I/O error occurs while writing stream header
*/
public ArtifactClassLoaderObjectOutputStream(ClassLoaderRepository classLoaderRepository, OutputStream out) throws IOException {
super(out);
this.classLoaderRepository = classLoaderRepository;
}
@Override
protected void annotateClass(Class clazz) throws IOException {
Optional id = classLoaderRepository.getId(clazz.getClassLoader());
if (id.isPresent()) {
this.writeInt(id.get().length());
this.writeBytes(id.get());
} else {
this.writeInt(-1);
}
}
}