org.eclipse.jetty.server.ClassLoaderDump Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2018 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.server;
import java.io.IOException;
import java.net.URLClassLoader;
import org.eclipse.jetty.util.component.Dumpable;
import org.eclipse.jetty.util.component.DumpableCollection;
public class ClassLoaderDump implements Dumpable
{
final ClassLoader _loader;
public ClassLoaderDump(ClassLoader loader)
{
_loader = loader;
}
@Override
public String dump()
{
return Dumpable.dump(this);
}
@Override
public void dump(Appendable out, String indent) throws IOException
{
if (_loader==null)
out.append("No ClassLoader\n");
else if (_loader instanceof Dumpable)
{
((Dumpable)_loader).dump(out,indent);
}
else if (_loader instanceof URLClassLoader)
{
String loader = _loader.toString();
DumpableCollection urls = DumpableCollection.fromArray("URLs", ((URLClassLoader)_loader).getURLs());
ClassLoader parent = _loader.getParent();
if (parent==null)
Dumpable.dumpObjects(out,indent,loader,urls);
else if (parent == Server.class.getClassLoader())
Dumpable.dumpObjects(out,indent,loader,urls,parent.toString());
else if (parent instanceof Dumpable)
Dumpable.dumpObjects(out,indent,loader,urls,parent);
else
Dumpable.dumpObjects(out,indent,loader,urls,new ClassLoaderDump(parent));
}
else
{
String loader = _loader.toString();
ClassLoader parent = _loader.getParent();
if (parent==null)
Dumpable.dumpObject(out,loader);
if (parent==Server.class.getClassLoader())
Dumpable.dumpObjects(out,indent,loader,parent.toString());
else if (parent instanceof Dumpable)
Dumpable.dumpObjects(out,indent,loader,parent);
else if (parent!=null)
Dumpable.dumpObjects(out,indent,loader,new ClassLoaderDump(parent));
}
}
}