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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.server;
20  
21  import java.io.IOException;
22  import java.net.URLClassLoader;
23  import java.util.Collections;
24  
25  import org.eclipse.jetty.util.TypeUtil;
26  import org.eclipse.jetty.util.component.ContainerLifeCycle;
27  import org.eclipse.jetty.util.component.Dumpable;
28  
29  public class ClassLoaderDump implements Dumpable
30  {
31      final ClassLoader _loader;
32  
33      public ClassLoaderDump(ClassLoader loader)
34      {
35          _loader = loader;
36      }
37  
38      @Override
39      public String dump()
40      {
41          return ContainerLifeCycle.dump(this);
42      }
43  
44      @Override
45      public void dump(Appendable out, String indent) throws IOException
46      {
47          if (_loader==null)
48              out.append("No ClassLoader\n");
49          else
50          {
51              out.append(String.valueOf(_loader)).append("\n");
52  
53              Object parent = _loader.getParent();
54              if (parent != null)
55              {
56                  if (_loader instanceof URLClassLoader)
57                      ContainerLifeCycle.dump(out,indent,TypeUtil.asList(((URLClassLoader)_loader).getURLs()),Collections.singleton(parent.toString()));
58                  else
59                      ContainerLifeCycle.dump(out,indent,Collections.singleton(parent.toString()));
60              }
61          }
62      }
63  }