| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.axis2.deployment; |
| |
| import org.apache.axiom.attachments.utils.IOUtils; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.net.URLConnection; |
| import java.net.URLStreamHandler; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipInputStream; |
| |
| public class DeploymentClassLoader extends URLClassLoader { |
| // List of URL's |
| private URL[] urls = null; |
| |
| // List of jar files inside the jars in the original url |
| private List embedded_jars; |
| |
| /** |
| * DeploymentClassLoader is extended from URLClassLoader. The constructor |
| * does not override the super constructor, but takes in an addition list of |
| * jar files inside /lib directory. |
| * |
| * @param urls <code>URL</code>s |
| * @param parent parent classloader <code>ClassLoader</code> |
| */ |
| public DeploymentClassLoader(URL[] urls, List embedded_jars, ClassLoader parent) { |
| super(urls, parent); |
| this.urls = urls; |
| this.embedded_jars = embedded_jars; |
| } |
| |
| /** |
| * Finds and loads the class with the specified name from the URL search |
| * path. Any URLs referring to JAR files are loaded and opened as needed |
| * until the class is found. |
| * |
| * @param name the name of the class |
| * @return the resulting class |
| * @exception ClassNotFoundException if the class could not be found |
| */ |
| protected Class findClass(String name) throws ClassNotFoundException { |
| Class clazz; |
| try { |
| clazz = super.findClass(name); |
| } catch (ClassNotFoundException e) { |
| byte raw[] = null; |
| try { |
| String completeFileName = name; |
| /** |
| * Replacing org.apache. -> org/apache/... |
| */ |
| completeFileName = completeFileName.replace('.', '/').concat(".class"); |
| raw = getBytes(completeFileName); |
| } catch (Exception ex) { |
| // Fall through |
| } |
| if (raw == null) { |
| throw new ClassNotFoundException("Class Not found : " + name); |
| } |
| clazz = defineClass(name, raw, 0, raw.length); |
| } |
| return clazz; |
| } |
| |
| |
| /** |
| * Finds the resource with the specified name on the URL search path. |
| * |
| * @param resource the name of the resource |
| * @return a <code>URL</code> for the resource, or <code>null</code> |
| * if the resource could not be found. |
| */ |
| public URL findResource(String resource) { |
| URL url = super.findResource(resource); |
| if (url == null) { |
| for (int i = 0; embedded_jars != null && i < embedded_jars.size(); i++) { |
| String libjar_name = (String) embedded_jars.get(i); |
| try { |
| InputStream in = getJarAsStream(libjar_name); |
| ZipInputStream zin = new ZipInputStream(in); |
| ZipEntry entry; |
| String entryName; |
| while ((entry = zin.getNextEntry()) != null) { |
| entryName = entry.getName(); |
| if (entryName != null && |
| entryName.endsWith(resource)) { |
| byte[] raw = IOUtils.getStreamAsByteArray(zin); |
| return new URL("jar", "", -1, urls[0] + "!/" + libjar_name + "!/" + entryName, |
| new ByteUrlStreamHandler(raw)); |
| } |
| } |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| return url; |
| } |
| |
| /** |
| * Returns an Enumeration of URLs representing all of the resources |
| * on the URL search path having the specified name. |
| * |
| * @param resource the resource name |
| * @exception IOException if an I/O exception occurs |
| * @return an <code>Enumeration</code> of <code>URL</code>s |
| */ |
| public Enumeration findResources(String resource) throws IOException { |
| ArrayList resources = new ArrayList(); |
| Enumeration e = super.findResources(resource); |
| while (e.hasMoreElements()) { |
| resources.add(e.nextElement()); |
| } |
| for (int i = 0; embedded_jars != null && i < embedded_jars.size(); i++) { |
| String libjar_name = (String) embedded_jars.get(i); |
| try { |
| InputStream in = getJarAsStream(libjar_name); |
| ZipInputStream zin = new ZipInputStream(in); |
| ZipEntry entry; |
| String entryName; |
| while ((entry = zin.getNextEntry()) != null) { |
| entryName = entry.getName(); |
| if (entryName != null && |
| entryName.endsWith(resource)) { |
| byte[] raw = IOUtils.getStreamAsByteArray(zin); |
| resources.add(new URL("jar", "", -1, urls[0] + "!/" + libjar_name + "!/" + entryName, |
| new ByteUrlStreamHandler(raw))); |
| } |
| } |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| return Collections.enumeration(resources); |
| } |
| |
| /** |
| * Access the jars file (/lib) one by one , then for each one create a <code>ZipInputStream</code> |
| * and check to see whether there is any entry eith given name. if it is found then |
| * return the byte array for that |
| * |
| * @param resource <code>String</code> Name of the file to be found |
| * @return byte[] |
| * @throws java.io.IOException <code>Exception</code> |
| */ |
| private byte[] getBytes(String resource) throws Exception { |
| for (int i = 0; embedded_jars != null && i < embedded_jars.size(); i++) { |
| String libjar_name = (String) embedded_jars.get(i); |
| InputStream in = getJarAsStream(libjar_name); |
| byte[] bytes = getBytes(in, resource); |
| if(bytes != null) { |
| return bytes; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Get a specific entry's content as a byte array |
| * |
| * @param in |
| * @param resource |
| * @return |
| * @throws Exception |
| */ |
| private byte[] getBytes(InputStream in, String resource) throws Exception { |
| ZipInputStream zin = new ZipInputStream(in); |
| ZipEntry entry; |
| String entryName; |
| while ((entry = zin.getNextEntry()) != null) { |
| entryName = entry.getName(); |
| if (entryName != null && |
| entryName.endsWith(resource)) { |
| byte[] raw = IOUtils.getStreamAsByteArray(zin); |
| zin.close(); |
| return raw; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Get the specified embedded jar from the main jar |
| * |
| * @param libjar_name |
| * @return |
| * @throws Exception |
| */ |
| private InputStream getJarAsStream(String libjar_name) throws Exception { |
| return new ByteArrayInputStream(getBytes(urls[0].openStream(), libjar_name)); |
| } |
| |
| public static class ByteUrlStreamHandler extends URLStreamHandler { |
| private byte[] bytes; |
| |
| public ByteUrlStreamHandler(byte[] bytes) { |
| this.bytes = bytes; |
| } |
| |
| protected URLConnection openConnection(URL u) throws IOException { |
| return new ByteURLConnection(u, bytes); |
| } |
| } |
| |
| public static class ByteURLConnection extends URLConnection { |
| protected byte[] bytes; |
| |
| public ByteURLConnection(URL url, byte[] bytes) { |
| super(url); |
| this.bytes = bytes; |
| } |
| |
| public void connect() { |
| } |
| |
| public InputStream getInputStream() { |
| return new ByteArrayInputStream(bytes); |
| } |
| } |
| |
| public InputStream getResourceAsStream(String name) { |
| URL url = findResource(name); |
| if(url == null) { |
| url = getResource(name); |
| } |
| if(url!=null){ |
| try { |
| return url.openStream(); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| return null; |
| } |
| } |