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Posted to commits@servicemix.apache.org by gn...@apache.org on 2006/06/21 17:00:06 UTC
svn commit: r416002 [2/2] - in
/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi:
container/ deployment/impl/ framework/ loaders/
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileClassLoader.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileClassLoader.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileClassLoader.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileClassLoader.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,344 @@
+/**
+ *
+ * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.io.IOException;
+import java.io.File;
+import java.net.URL;
+import java.net.URI;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.CodeSource;
+import java.security.PrivilegedAction;
+import java.security.PrivilegedExceptionAction;
+import java.security.PrivilegedActionException;
+import java.security.cert.Certificate;
+import java.util.Collection;
+import java.util.Enumeration;
+import java.util.jar.Attributes;
+import java.util.jar.Manifest;
+
+/**
+ * The JarFileClassLoader that loads classes and resources from a list of JarFiles. This method is simmilar to URLClassLoader
+ * except it properly closes JarFiles when the classloader is destroyed so that the file read lock will be released, and
+ * the jar file can be modified and deleted.
+ * <p>
+ * Note: This implementation currently does not work reliably on windows, since the jar URL handler included with the Sun JavaVM
+ * holds a read lock on the JarFile, and this lock is not released when the jar url is dereferenced. To fix this a
+ * replacement for the jar url handler must be written.
+ *
+ * @author Dain Sundstrom
+ * @version $Id: JarFileClassLoader.java 410741 2006-06-01 04:35:48Z jsisson $
+ * @since 2.0
+ */
+public class JarFileClassLoader extends MultiParentClassLoader {
+ private static final URL[] EMPTY_URLS = new URL[0];
+
+ private final UrlResourceFinder resourceFinder = new UrlResourceFinder();
+ private final AccessControlContext acc;
+
+ /**
+ * Creates a JarFileClassLoader that is a child of the system class loader.
+ * @param name the name of this class loader
+ * @param urls a list of URLs from which classes and resources should be loaded
+ */
+ public JarFileClassLoader(String name, URL[] urls) {
+ super(name, EMPTY_URLS);
+ this.acc = AccessController.getContext();
+ addURLs(urls);
+ }
+
+ /**
+ * Creates a JarFileClassLoader that is a child of the specified class loader.
+ * @param id the name of this class loader
+ * @param urls a list of URLs from which classes and resources should be loaded
+ * @param parent the parent of this class loader
+ */
+ public JarFileClassLoader(String name, URL[] urls, ClassLoader parent) {
+ super(name, EMPTY_URLS, parent);
+ this.acc = AccessController.getContext();
+ addURLs(urls);
+ }
+
+ public JarFileClassLoader(String name, URL[] urls, ClassLoader parent, boolean inverseClassLoading, String[] hiddenClasses, String[] nonOverridableClasses) {
+ super(name, EMPTY_URLS, parent, inverseClassLoading, hiddenClasses, nonOverridableClasses);
+ this.acc = AccessController.getContext();
+ addURLs(urls);
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parents.
+ * @param id the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parents the parents of this class loader
+ */
+ public JarFileClassLoader(String name, URL[] urls, ClassLoader[] parents) {
+ super(name, EMPTY_URLS, parents);
+ this.acc = AccessController.getContext();
+ addURLs(urls);
+ }
+
+ public JarFileClassLoader(String name, URL[] urls, ClassLoader[] parents, boolean inverseClassLoading, Collection hiddenClasses, Collection nonOverridableClasses) {
+ super(name, EMPTY_URLS, parents, inverseClassLoading, hiddenClasses, nonOverridableClasses);
+ this.acc = AccessController.getContext();
+ addURLs(urls);
+ }
+
+ public JarFileClassLoader(String name, URL[] urls, ClassLoader[] parents, boolean inverseClassLoading, String[] hiddenClasses, String[] nonOverridableClasses) {
+ super(name, EMPTY_URLS, parents, inverseClassLoading, hiddenClasses, nonOverridableClasses);
+ this.acc = AccessController.getContext();
+ addURLs(urls);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public URL[] getURLs() {
+ return resourceFinder.getUrls();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void addURL(final URL url) {
+ AccessController.doPrivileged(new PrivilegedAction() {
+ public Object run() {
+ resourceFinder.addUrl(url);
+ return null;
+ }
+ }, acc);
+ }
+
+ /**
+ * Adds an array of urls to the end of this class loader.
+ * @param urls the URLs to add
+ */
+ protected void addURLs(final URL[] urls) {
+ AccessController.doPrivileged(new PrivilegedAction() {
+ public Object run() {
+ resourceFinder.addUrls(urls);
+ return null;
+ }
+ }, acc);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void destroy() {
+ resourceFinder.destroy();
+ super.destroy();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public URL findResource(final String resourceName) {
+ return (URL) AccessController.doPrivileged(new PrivilegedAction() {
+ public Object run() {
+ return resourceFinder.findResource(resourceName);
+ }
+ }, acc);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public Enumeration findResources(final String resourceName) throws IOException {
+ // todo this is not right
+ // first get the resources from the parent classloaders
+ Enumeration parentResources = super.findResources(resourceName);
+
+ // get the classes from my urls
+ Enumeration myResources = (Enumeration) AccessController.doPrivileged(new PrivilegedAction() {
+ public Object run() {
+ return resourceFinder.findResources(resourceName);
+ }
+ }, acc);
+
+ // join the two together
+ Enumeration resources = new UnionEnumeration(parentResources, myResources);
+ return resources;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ protected String findLibrary(String libraryName) {
+ // if the libraryName is actually a directory it is invalid
+ int pathEnd = libraryName.lastIndexOf('/');
+ if (pathEnd == libraryName.length() - 1) {
+ throw new IllegalArgumentException("libraryName ends with a '/' character: " + libraryName);
+ }
+
+ // get the name if the library file
+ final String resourceName;
+ if (pathEnd < 0) {
+ resourceName = System.mapLibraryName(libraryName);
+ } else {
+ String path = libraryName.substring(0, pathEnd + 1);
+ String file = libraryName.substring(pathEnd + 1);
+ resourceName = path + System.mapLibraryName(file);
+ }
+
+ // get a resource handle to the library
+ ResourceHandle resourceHandle = (ResourceHandle) AccessController.doPrivileged(new PrivilegedAction() {
+ public Object run() {
+ return resourceFinder.getResource(resourceName);
+ }
+ }, acc);
+
+ if (resourceHandle == null) {
+ return null;
+ }
+
+ // the library must be accessable on the file system
+ URL url = resourceHandle.getUrl();
+ if (!"file".equals(url.getProtocol())) {
+ return null;
+ }
+
+ String path = new File(URI.create(url.toString())).getPath();
+ return path;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ protected Class findClass(final String className) throws ClassNotFoundException {
+ try {
+ return (Class) AccessController.doPrivileged(new PrivilegedExceptionAction() {
+ public Object run() throws ClassNotFoundException {
+ // first think check if we are allowed to define the package
+ SecurityManager securityManager = System.getSecurityManager();
+ if (securityManager != null) {
+ String packageName;
+ int packageEnd = className.lastIndexOf('.');
+ if (packageEnd >= 0) {
+ packageName = className.substring(0, packageEnd);
+ securityManager.checkPackageDefinition(packageName);
+ }
+ }
+
+
+ // convert the class name to a file name
+ String resourceName = className.replace('.', '/') + ".class";
+
+ // find the class file resource
+ ResourceHandle resourceHandle = resourceFinder.getResource(resourceName);
+ if (resourceHandle == null) {
+ throw new ClassNotFoundException(className);
+ }
+
+ byte[] bytes;
+ Manifest manifest;
+ try {
+ // get the bytes from the class file
+ bytes = resourceHandle.getBytes();
+
+ // get the manifest for defining the packages
+ manifest = resourceHandle.getManifest();
+ } catch (IOException e) {
+ throw new ClassNotFoundException(className, e);
+ }
+
+ // get the certificates for the code source
+ Certificate[] certificates = resourceHandle.getCertificates();
+
+ // the code source url is used to define the package and as the security context for the class
+ URL codeSourceUrl = resourceHandle.getCodeSourceUrl();
+
+ // define the package (required for security)
+ definePackage(className, codeSourceUrl, manifest);
+
+ // this is the security context of the class
+ CodeSource codeSource = new CodeSource(codeSourceUrl, certificates);
+
+ // load the class into the vm
+ Class clazz = defineClass(className, bytes, 0, bytes.length, codeSource);
+ return clazz;
+ }
+ }, acc);
+ } catch (PrivilegedActionException e) {
+ throw (ClassNotFoundException) e.getException();
+ }
+ }
+
+ private void definePackage(String className, URL jarUrl, Manifest manifest) {
+ int packageEnd = className.lastIndexOf('.');
+ if (packageEnd < 0) {
+ return;
+ }
+
+ String packageName = className.substring(0, packageEnd);
+ String packagePath = packageName.replace('.', '/') + "/";
+
+ Attributes packageAttributes = null;
+ Attributes mainAttributes = null;
+ if (manifest != null) {
+ packageAttributes = manifest.getAttributes(packagePath);
+ mainAttributes = manifest.getMainAttributes();
+ }
+ Package pkg = getPackage(packageName);
+ if (pkg != null) {
+ if (pkg.isSealed()) {
+ if (!pkg.isSealed(jarUrl)) {
+ throw new SecurityException("Package was already sealed with another URL: package=" + packageName + ", url=" + jarUrl);
+ }
+ } else {
+ if (isSealed(packageAttributes, mainAttributes)) {
+ throw new SecurityException("Package was already been loaded and not sealed: package=" + packageName + ", url=" + jarUrl);
+ }
+ }
+ } else {
+ String specTitle = getAttribute(Attributes.Name.SPECIFICATION_TITLE, packageAttributes, mainAttributes);
+ String specVendor = getAttribute(Attributes.Name.SPECIFICATION_VENDOR, packageAttributes, mainAttributes);
+ String specVersion = getAttribute(Attributes.Name.SPECIFICATION_VERSION, packageAttributes, mainAttributes);
+ String implTitle = getAttribute(Attributes.Name.IMPLEMENTATION_TITLE, packageAttributes, mainAttributes);
+ String implVendor = getAttribute(Attributes.Name.IMPLEMENTATION_VENDOR, packageAttributes, mainAttributes);
+ String implVersion = getAttribute(Attributes.Name.IMPLEMENTATION_VERSION, packageAttributes, mainAttributes);
+
+ URL sealBase = null;
+ if (isSealed(packageAttributes, mainAttributes)) {
+ sealBase = jarUrl;
+ }
+
+ definePackage(packageName, specTitle, specVersion, specVendor, implTitle, implVersion, implVendor, sealBase);
+ }
+ }
+
+ private String getAttribute(Attributes.Name name, Attributes packageAttributes, Attributes mainAttributes) {
+ if (packageAttributes != null) {
+ String value = packageAttributes.getValue(name);
+ if (value != null) {
+ return value;
+ }
+ }
+ if (mainAttributes != null) {
+ return mainAttributes.getValue(name);
+ }
+ return null;
+ }
+
+ private boolean isSealed(Attributes packageAttributes, Attributes mainAttributes) {
+ String sealed = getAttribute(Attributes.Name.SEALED, packageAttributes, mainAttributes);
+ if (sealed == null) {
+ return false;
+ }
+ return "true".equalsIgnoreCase(sealed);
+ }
+}
\ No newline at end of file
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlConnection.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlConnection.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlConnection.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlConnection.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,132 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.JarURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.net.URLStreamHandler;
+import java.security.Permission;
+import java.security.cert.Certificate;
+import java.util.jar.Attributes;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public class JarFileUrlConnection extends JarURLConnection {
+ public static final URL DUMMY_JAR_URL;
+ static {
+ try {
+ DUMMY_JAR_URL = new URL("jar", "", -1, "file:dummy!/", new URLStreamHandler() {
+ protected URLConnection openConnection(URL u) {
+ throw new UnsupportedOperationException();
+ }
+ });
+ } catch (Exception e) {
+ throw new ExceptionInInitializerError(e);
+ }
+ }
+
+ private final URL url;
+ private final JarFile jarFile;
+ private final JarEntry jarEntry;
+ private final URL jarFileUrl;
+
+ public JarFileUrlConnection(URL url, JarFile jarFile, JarEntry jarEntry) throws MalformedURLException {
+ super(DUMMY_JAR_URL);
+
+ if (url == null) throw new NullPointerException("url is null");
+ if (jarFile == null) throw new NullPointerException("jarFile is null");
+ if (jarEntry == null) throw new NullPointerException("jarEntry is null");
+
+ this.url = url;
+ this.jarFile = jarFile;
+ this.jarEntry = jarEntry;
+ jarFileUrl = new File(jarFile.getName()).toURL();
+ }
+
+ public JarFile getJarFile() throws IOException {
+ return jarFile;
+ }
+
+ public synchronized void connect() {
+ }
+
+ public URL getJarFileURL() {
+ return jarFileUrl;
+ }
+
+ public String getEntryName() {
+ return getJarEntry().getName();
+ }
+
+ public Manifest getManifest() throws IOException {
+ return jarFile.getManifest();
+ }
+
+ public JarEntry getJarEntry() {
+ return jarEntry;
+ }
+
+ public Attributes getAttributes() throws IOException {
+ return getJarEntry().getAttributes();
+ }
+
+ public Attributes getMainAttributes() throws IOException {
+ return getManifest().getMainAttributes();
+ }
+
+ public Certificate[] getCertificates() throws IOException {
+ return getJarEntry().getCertificates();
+ }
+
+ public URL getURL() {
+ return url;
+ }
+
+ public int getContentLength() {
+ long size = getJarEntry().getSize();
+ if (size > Integer.MAX_VALUE) {
+ return -1;
+ }
+ return (int) size;
+ }
+
+ public long getLastModified() {
+ return getJarEntry().getTime();
+ }
+
+ public synchronized InputStream getInputStream() throws IOException {
+ return jarFile.getInputStream(jarEntry);
+ }
+
+ public Permission getPermission() throws IOException {
+ URL jarFileUrl = new File(jarFile.getName()).toURL();
+ return jarFileUrl.openConnection().getPermission();
+ }
+
+ public String toString() {
+ return JarFileUrlConnection.class.getName() + ":" + url;
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlStreamHandler.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlStreamHandler.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlStreamHandler.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarFileUrlStreamHandler.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,67 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.net.URL;
+import java.net.URLConnection;
+import java.net.URLStreamHandler;
+import java.net.MalformedURLException;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import java.io.File;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public class JarFileUrlStreamHandler extends URLStreamHandler {
+ public static URL createUrl(JarFile jarFile, JarEntry jarEntry) throws MalformedURLException {
+ return createUrl(jarFile, jarEntry, new File(jarFile.getName()).toURL());
+ }
+
+ public static URL createUrl(JarFile jarFile, JarEntry jarEntry, URL codeSource) throws MalformedURLException {
+ JarFileUrlStreamHandler handler = new JarFileUrlStreamHandler(jarFile, jarEntry);
+ URL url = new URL("jar", "", -1, codeSource + "!/" + jarEntry.getName(), handler);
+ handler.setExpectedUrl(url);
+ return url;
+ }
+
+ private URL expectedUrl;
+ private final JarFile jarFile;
+ private final JarEntry jarEntry;
+
+ public JarFileUrlStreamHandler(JarFile jarFile, JarEntry jarEntry) {
+ if (jarFile == null) throw new NullPointerException("jarFile is null");
+ if (jarEntry == null) throw new NullPointerException("jarEntry is null");
+
+ this.jarFile = jarFile;
+ this.jarEntry = jarEntry;
+ }
+
+ public void setExpectedUrl(URL expectedUrl) {
+ if (expectedUrl == null) throw new NullPointerException("expectedUrl is null");
+ this.expectedUrl = expectedUrl;
+ }
+
+ public URLConnection openConnection(URL url) throws MalformedURLException {
+ if (expectedUrl == null) throw new IllegalStateException("expectedUrl was not set");
+
+ // alternatively we could return a connection using the normal jar url connection
+ if (!expectedUrl.equals(url)) throw new IllegalArgumentException("Expected url [" + expectedUrl + "], but was [" + url + "]");
+
+ return new JarFileUrlConnection(url, jarFile, jarEntry);
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceHandle.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceHandle.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceHandle.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceHandle.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,80 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.util.jar.JarFile;
+import java.util.jar.JarEntry;
+import java.util.jar.Manifest;
+import java.util.jar.Attributes;
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.io.InputStream;
+import java.io.IOException;
+import java.security.cert.Certificate;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public class JarResourceHandle extends AbstractResourceHandle {
+ private final JarFile jarFile;
+ private final JarEntry jarEntry;
+ private final URL url;
+ private final URL codeSource;
+
+ public JarResourceHandle(JarFile jarFile, JarEntry jarEntry, URL codeSource) throws MalformedURLException {
+ this.jarFile = jarFile;
+ this.jarEntry = jarEntry;
+ this.url = JarFileUrlStreamHandler.createUrl(jarFile, jarEntry, codeSource);
+ this.codeSource = codeSource;
+ }
+
+ public String getName() {
+ return jarEntry.getName();
+ }
+
+ public URL getUrl() {
+ return url;
+ }
+
+ public URL getCodeSourceUrl() {
+ return codeSource;
+ }
+
+ public boolean isDirectory() {
+ return jarEntry.isDirectory();
+ }
+
+ public InputStream getInputStream() throws IOException {
+ return jarFile.getInputStream(jarEntry);
+ }
+
+ public int getContentLength() {
+ return (int) jarEntry.getSize();
+ }
+
+ public Manifest getManifest() throws IOException {
+ return jarFile.getManifest();
+ }
+
+ public Attributes getAttributes() throws IOException {
+ return jarEntry.getAttributes();
+ }
+
+ public Certificate[] getCertificates() {
+ return jarEntry.getCertificates();
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceLocation.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceLocation.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceLocation.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/JarResourceLocation.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,56 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.util.jar.Manifest;
+import java.util.jar.JarFile;
+import java.util.jar.JarEntry;
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.io.IOException;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public class JarResourceLocation extends AbstractUrlResourceLocation {
+ private final JarFile jarFile;
+
+ public JarResourceLocation(URL codeSource, JarFile jarFile) {
+ super(codeSource);
+ this.jarFile = jarFile;
+ }
+
+ public ResourceHandle getResourceHandle(String resourceName) {
+ JarEntry jarEntry = jarFile.getJarEntry(resourceName);
+ if (jarEntry != null) {
+ try {
+ URL url = new URL(getCodeSource(), resourceName);
+ return new JarResourceHandle(jarFile, jarEntry, getCodeSource());
+ } catch (MalformedURLException e) {
+ }
+ }
+ return null;
+ }
+
+ public Manifest getManifest() throws IOException {
+ return jarFile.getManifest();
+ }
+
+ public void close() {
+ IoUtil.close(jarFile);
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/MultiParentClassLoader.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/MultiParentClassLoader.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/MultiParentClassLoader.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/MultiParentClassLoader.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,345 @@
+/**
+ *
+ * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLStreamHandlerFactory;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+
+/**
+ * A MultiParentClassLoader is a simple extension of the URLClassLoader that simply changes the single parent class
+ * loader model to support a list of parent class loaders. Each operation that accesses a parent, has been replaced
+ * with a operation that checks each parent in order. This getParent method of this class will always return null,
+ * which may be interperated by the calling code to mean that this class loader is a direct child of the system class
+ * loader.
+ *
+ * @author Dain Sundstrom
+ * @version $Id$
+ * @since 2.0
+ */
+public class MultiParentClassLoader extends NamedClassLoader {
+ private final ClassLoader[] parents;
+ private final boolean inverseClassLoading;
+ private final String[] hiddenClasses;
+ private final String[] nonOverridableClasses;
+ private final String[] hiddenResources;
+ private final String[] nonOverridableResources;
+
+ /**
+ * Creates a named class loader with no parents.
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ */
+ public MultiParentClassLoader(String name, URL[] urls) {
+ this(name, urls, ClassLoader.getSystemClassLoader());
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parent.
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parent the parent of this class loader
+ */
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader parent) {
+ this(name, urls, new ClassLoader[] {parent});
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parent and using the specified URLStreamHandlerFactory
+ * for accessing the urls..
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parent the parent of this class loader
+ * @param factory the URLStreamHandlerFactory used to access the urls
+ */
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory) {
+ this(name, urls, new ClassLoader[] {parent}, factory);
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parents.
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parents the parents of this class loader
+ */
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader[] parents) {
+ this(name, urls, parents, false, new String[0], new String[0]);
+ }
+
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader parent, boolean inverseClassLoading, String[] hiddenClasses, String[] nonOverridableClasses) {
+ this(name, urls, new ClassLoader[]{parent}, inverseClassLoading, hiddenClasses, nonOverridableClasses);
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parents and using the specified URLStreamHandlerFactory
+ * for accessing the urls..
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parents the parents of this class loader
+ * @param factory the URLStreamHandlerFactory used to access the urls
+ */
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader[] parents, URLStreamHandlerFactory factory) {
+ super(name, urls, null, factory);
+ this.parents = copyParents(parents);
+ this.inverseClassLoading = false;
+ this.hiddenClasses = new String[0];
+ this.nonOverridableClasses = new String[0];
+ this.hiddenResources = new String[0];
+ this.nonOverridableResources = new String[0];
+ }
+
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader[] parents, boolean inverseClassLoading, Collection hiddenClasses, Collection nonOverridableClasses) {
+ this(name, urls, parents, inverseClassLoading, (String[]) hiddenClasses.toArray(new String[hiddenClasses.size()]), (String[]) nonOverridableClasses.toArray(new String[nonOverridableClasses.size()]));
+ }
+
+ public MultiParentClassLoader(String name, URL[] urls, ClassLoader[] parents, boolean inverseClassLoading, String[] hiddenClasses, String[] nonOverridableClasses) {
+ super(name, urls);
+ this.parents = copyParents(parents);
+ this.inverseClassLoading = inverseClassLoading;
+ this.hiddenClasses = hiddenClasses;
+ this.nonOverridableClasses = nonOverridableClasses;
+ hiddenResources = toResources(hiddenClasses);
+ nonOverridableResources = toResources(nonOverridableClasses);
+ }
+
+ private static String[] toResources(String[] classes) {
+ String[] resources = new String[classes.length];
+ for (int i = 0; i < classes.length; i++) {
+ String className = classes[i];
+ resources[i] = className.replace('.', '/');
+ }
+ return resources;
+ }
+
+ private static ClassLoader[] copyParents(ClassLoader[] parents) {
+ ClassLoader[] newParentsArray = new ClassLoader[parents.length];
+ for (int i = 0; i < parents.length; i++) {
+ ClassLoader parent = parents[i];
+ if (parent == null) {
+ throw new NullPointerException("parent[" + i + "] is null");
+ }
+ newParentsArray[i] = parent;
+ }
+ return newParentsArray;
+ }
+
+ /**
+ * Gets the parents of this class loader.
+ * @return the parents of this class loader
+ */
+ public ClassLoader[] getParents() {
+ return parents;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
+ //
+ // Check if class is in the loaded classes cache
+ //
+ Class cachedClass = findLoadedClass(name);
+ if (cachedClass != null) {
+ return resolveClass(cachedClass, resolve);
+ }
+
+ //
+ // if we are using inverse class loading, check local urls first
+ //
+ if (inverseClassLoading && !isDestroyed() && !isNonOverridableClass(name)) {
+ try {
+ Class clazz = findClass(name);
+ return resolveClass(clazz, resolve);
+ } catch (ClassNotFoundException ignored) {
+ }
+ }
+
+ //
+ // Check parent class loaders
+ //
+ if (!isHiddenClass(name)) {
+ for (int i = 0; i < parents.length; i++) {
+ ClassLoader parent = parents[i];
+ try {
+ Class clazz = parent.loadClass(name);
+ return resolveClass(clazz, resolve);
+ } catch (ClassNotFoundException ignored) {
+ // this parent didn't have the class; try the next one
+ }
+ }
+ }
+
+ //
+ // if we are not using inverse class loading, check local urls now
+ //
+ // don't worry about excluding non-overridable classes here... we
+ // have alredy checked he parent and the parent didn't have the
+ // class, so we can override now
+ if (!isDestroyed()) {
+ try {
+ Class clazz = findClass(name);
+ return resolveClass(clazz, resolve);
+ } catch (ClassNotFoundException ignored) {
+ }
+ }
+
+ throw new ClassNotFoundException(name + " in classloader " + name);
+ }
+
+ private boolean isNonOverridableClass(String name) {
+ for (int i = 0; i < nonOverridableClasses.length; i++) {
+ if (name.startsWith(nonOverridableClasses[i])) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private boolean isHiddenClass(String name) {
+ for (int i = 0; i < hiddenClasses.length; i++) {
+ if (name.startsWith(hiddenClasses[i])) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private Class resolveClass(Class clazz, boolean resolve) {
+ if (resolve) {
+ resolveClass(clazz);
+ }
+ return clazz;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public URL getResource(String name) {
+ if (isDestroyed()) {
+ return null;
+ }
+
+ //
+ // if we are using inverse class loading, check local urls first
+ //
+ if (inverseClassLoading && !isDestroyed() && !isNonOverridableResource(name)) {
+ URL url = findResource(name);
+ if (url != null) {
+ return url;
+ }
+ }
+
+ //
+ // Check parent class loaders
+ //
+ if (!isHiddenResource(name)) {
+ for (int i = 0; i < parents.length; i++) {
+ ClassLoader parent = parents[i];
+ URL url = parent.getResource(name);
+ if (url != null) {
+ return url;
+ }
+ }
+ }
+
+ //
+ // if we are not using inverse class loading, check local urls now
+ //
+ // don't worry about excluding non-overridable resources here... we
+ // have alredy checked he parent and the parent didn't have the
+ // resource, so we can override now
+ if (!isDestroyed()) {
+ // parents didn't have the resource; attempt to load it from my urls
+ return findResource(name);
+ }
+
+ return null;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public Enumeration findResources(String name) throws IOException {
+ if (isDestroyed()) {
+ return Collections.enumeration(Collections.EMPTY_SET);
+ }
+
+ List resources = new ArrayList();
+
+ //
+ // if we are using inverse class loading, add the resources from local urls first
+ //
+ if (inverseClassLoading && !isDestroyed()) {
+ List myResources = Collections.list(super.findResources(name));
+ resources.addAll(myResources);
+ }
+
+ //
+ // Add parent resources
+ //
+ for (int i = 0; i < parents.length; i++) {
+ ClassLoader parent = parents[i];
+ List parentResources = Collections.list(parent.getResources(name));
+ resources.addAll(parentResources);
+ }
+
+ //
+ // if we are not using inverse class loading, add the resources from local urls now
+ //
+ if (!inverseClassLoading && !isDestroyed()) {
+ List myResources = Collections.list(super.findResources(name));
+ resources.addAll(myResources);
+ }
+
+ return Collections.enumeration(resources);
+ }
+
+ private boolean isNonOverridableResource(String name) {
+ for (int i = 0; i < nonOverridableResources.length; i++) {
+ if (name.startsWith(nonOverridableResources[i])) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private boolean isHiddenResource(String name) {
+ for (int i = 0; i < hiddenResources.length; i++) {
+ if (name.startsWith(hiddenResources[i])) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public String toString() {
+ return "[" + getClass().getName() + ":" +
+ " name=" + getName() +
+ " urls=" + Arrays.asList(getURLs()) +
+ " parents=" + Arrays.asList(parents) +
+ "]";
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/NamedClassLoader.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/NamedClassLoader.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/NamedClassLoader.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/NamedClassLoader.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,107 @@
+/**
+ *
+ * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.net.URLStreamHandlerFactory;
+import java.util.Arrays;
+
+
+/**
+ * The NamedClassLoader is a simple extension to URLClassLoader that adds a name and a destroy method that cleans up
+ * the commons logging and JavaVM caches of the classloader.
+ *
+ * @author Dain Sundstrom
+ * @version $Id$
+ * @since 2.0
+ */
+public class NamedClassLoader extends URLClassLoader implements DestroyableClassLoader {
+ private final String name;
+ private boolean destroyed = false;
+
+ /**
+ * Creates a named class loader with no parents.
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ */
+ public NamedClassLoader(String name, URL[] urls) {
+ super(urls);
+ this.name = name;
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parent.
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parent the parent of this class loader
+ */
+ public NamedClassLoader(String name, URL[] urls, ClassLoader parent) {
+ super(urls, parent);
+ this.name = name;
+ }
+
+ /**
+ * Creates a named class loader as a child of the specified parent and using the specified URLStreamHandlerFactory
+ * for accessing the urls..
+ * @param name the name of this class loader
+ * @param urls the urls from which this class loader will classes and resources
+ * @param parent the parent of this class loader
+ * @param factory the URLStreamHandlerFactory used to access the urls
+ */
+ public NamedClassLoader(String name, URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory) {
+ super(urls, parent, factory);
+ this.name = name;
+ }
+
+ /**
+ * Check if this classloader has been destroyed
+ * @return
+ */
+ public synchronized boolean isDestroyed() {
+ return destroyed;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void destroy() {
+ synchronized(this) {
+ if (destroyed) return;
+ destroyed = true;
+ }
+ ClassLoaderUtil.destroy(this);
+ }
+
+ /**
+ * Gets the name of this class loader.
+ * @return the name of this class loader
+ */
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public String toString() {
+ return "[" + getClass().getName() + ":" +
+ " name=" + getName() +
+ " urls=" + Arrays.asList(getURLs()) +
+ "]";
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceEnumeration.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceEnumeration.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceEnumeration.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceEnumeration.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,83 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.Collection;
+import java.util.NoSuchElementException;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public class ResourceEnumeration implements Enumeration {
+ private Iterator iterator;
+ private final String resourceName;
+ private Object next;
+
+ public ResourceEnumeration(Collection resourceLocations, String resourceName) {
+ this.iterator = resourceLocations.iterator();
+ this.resourceName = resourceName;
+ }
+
+ public boolean hasMoreElements() {
+ fetchNext();
+ return (next != null);
+ }
+
+ public Object nextElement() {
+ fetchNext();
+
+ // save next into a local variable and clear the next field
+ Object next = this.next;
+ this.next = null;
+
+ // if we didn't have a next throw an exception
+ if (next == null) {
+ throw new NoSuchElementException();
+ }
+ return next;
+ }
+
+ private void fetchNext() {
+ if (iterator == null) {
+ return;
+ }
+ if (next != null) {
+ return;
+ }
+
+ try {
+ while (iterator.hasNext()) {
+ ResourceLocation resourceLocation = (ResourceLocation) iterator.next();
+ ResourceHandle resourceHandle = resourceLocation.getResourceHandle(resourceName);
+ if (resourceHandle != null) {
+ next = resourceHandle.getUrl();
+ return;
+ }
+ }
+ // no more elements
+ // clear the iterator so it can be GCed
+ iterator = null;
+ } catch (IllegalStateException e) {
+ // Jar file was closed... this means the resource finder was destroyed
+ // clear the iterator so it can be GCed
+ iterator = null;
+ throw e;
+ }
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceFinder.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceFinder.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceFinder.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceFinder.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,55 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.net.URL;
+import java.util.Enumeration;
+
+/**
+ * Abstraction of resource searching policy. Given resource name, the resource
+ * finder performs implementation-specific lookup, and, if it is able to locate
+ * the resource, returns the {@link AbstractResourceHandle handle(s)} or URL(s) of it.
+ *
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public interface ResourceFinder {
+ /**
+ * Find the resource by name and return URL of it if found.
+ *
+ * @param name the resource name
+ * @return resource URL or null if resource was not found
+ */
+ public URL findResource(String name);
+
+ /**
+ * Find all resources with given name and return enumeration of their URLs.
+ *
+ * @param name the resource name
+ * @return enumeration of resource URLs (possibly empty).
+ */
+ public Enumeration findResources(String name);
+
+ /**
+ * Get the resource by name and, if found, open connection to it and return
+ * the {@link AbstractResourceHandle handle} of it.
+ *
+ * @param name the resource name
+ * @return resource handle or null if resource was not found
+ */
+ public ResourceHandle getResource(String name);
+
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceHandle.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceHandle.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceHandle.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceHandle.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,97 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.net.URL;
+import java.io.InputStream;
+import java.io.IOException;
+import java.util.jar.Manifest;
+import java.util.jar.Attributes;
+import java.security.cert.Certificate;
+
+/**
+ * This is a handle (a connection) to some resource, which may
+ * be a class, native library, text file, image, etc. Handles are returned
+ * by a ResourceFinder. A resource handle allows easy access to the resource data
+ * (using methods {@link #getInputStream} or {@link #getBytes}) as well as
+ * access resource metadata, such as attributes, certificates, etc.
+ * <p/>
+ * As soon as the handle is no longer in use, it should be explicitly
+ * {@link #close}d, similarly to I/O streams.
+ *
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public interface ResourceHandle {
+ /**
+ * Return the name of the resource. The name is a "/"-separated path
+ * name that identifies the resource.
+ */
+ String getName();
+
+ /**
+ * Returns the URL of the resource.
+ */
+ URL getUrl();
+
+ /**
+ * Does this resource refer to a directory. Directory resources are commly used
+ * as the basis for a URL in client application. A directory resource has 0 bytes for it's content.
+ */
+ boolean isDirectory();
+
+ /**
+ * Returns the CodeSource URL for the class or resource.
+ */
+ URL getCodeSourceUrl();
+
+ /**
+ * Returns and InputStream for reading this resource data.
+ */
+ InputStream getInputStream() throws IOException;
+
+ /**
+ * Returns the length of this resource data, or -1 if unknown.
+ */
+ int getContentLength();
+
+ /**
+ * Returns this resource data as an array of bytes.
+ */
+ byte[] getBytes() throws IOException;
+
+ /**
+ * Returns the Manifest of the JAR file from which this resource
+ * was loaded, or null if none.
+ */
+ Manifest getManifest() throws IOException;
+
+ /**
+ * Return the Certificates of the resource, or null if none.
+ */
+ Certificate[] getCertificates();
+
+ /**
+ * Return the Attributes of the resource, or null if none.
+ */
+ Attributes getAttributes() throws IOException;
+
+ /**
+ * Closes a connection to the resource indentified by this handle. Releases
+ * any I/O objects associated with the handle.
+ */
+ void close();
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceLocation.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceLocation.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceLocation.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ResourceLocation.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,32 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.util.jar.Manifest;
+import java.io.IOException;
+import java.net.URL;
+
+/**
+ * This is a location which is searched by
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public interface ResourceLocation {
+ URL getCodeSource();
+ ResourceHandle getResourceHandle(String resourceName);
+ Manifest getManifest() throws IOException;
+ void close();
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ThreadContextClassLoaderFactoryBean.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ThreadContextClassLoaderFactoryBean.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ThreadContextClassLoaderFactoryBean.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/ThreadContextClassLoaderFactoryBean.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,41 @@
+/**
+ *
+ * Copyright 2005-2006 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import org.springframework.beans.factory.FactoryBean;
+
+/**
+ * A factory bean to expose the current thread context class loader.
+ *
+ * * @org.apache.xbean.XBean namespace="http://xbean.apache.org/schemas/server"
+ * element="threadContextClassLoader" description="References the ClassLoader of the current thread context"
+ * @version $Revision: 412595 $
+ */
+public class ThreadContextClassLoaderFactoryBean implements FactoryBean {
+
+ public Object getObject() throws Exception {
+ return Thread.currentThread().getContextClassLoader();
+ }
+
+ public Class getObjectType() {
+ return ClassLoader.class;
+ }
+
+ public boolean isSingleton() {
+ return true;
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UnionEnumeration.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UnionEnumeration.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UnionEnumeration.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UnionEnumeration.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,63 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.util.Enumeration;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public final class UnionEnumeration implements Enumeration {
+ private final LinkedList enumerations = new LinkedList();
+
+ public UnionEnumeration(List enumerations) {
+ this.enumerations.addAll(enumerations);
+ }
+
+ public UnionEnumeration(Enumeration first, Enumeration second) {
+ if (first == null) throw new NullPointerException("first is null");
+ if (second == null) throw new NullPointerException("second is null");
+
+ enumerations.add(first);
+ enumerations.add(second);
+ }
+
+ public boolean hasMoreElements() {
+ while (!enumerations.isEmpty()) {
+ Enumeration enumeration = (Enumeration) enumerations.getFirst();
+ if (enumeration.hasMoreElements()) {
+ return true;
+ }
+ enumerations.removeFirst();
+ }
+ return false;
+ }
+
+ public Object nextElement() {
+ while (!enumerations.isEmpty()) {
+ Enumeration enumeration = (Enumeration) enumerations.getFirst();
+ if (enumeration.hasMoreElements()) {
+ return enumeration.nextElement();
+ }
+ enumerations.removeFirst();
+ }
+ throw new NoSuchElementException();
+ }
+}
Added: incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UrlResourceFinder.java
URL: http://svn.apache.org/viewvc/incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UrlResourceFinder.java?rev=416002&view=auto
==============================================================================
--- incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UrlResourceFinder.java (added)
+++ incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/loaders/UrlResourceFinder.java Wed Jun 21 08:00:03 2006
@@ -0,0 +1,296 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.servicemix.jbi.loaders;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.FileNotFoundException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.StringTokenizer;
+import java.util.jar.Attributes;
+import java.util.jar.Manifest;
+import java.util.jar.JarFile;
+
+/**
+ * @version $Rev: 410741 $ $Date: 2006-06-01 06:35:48 +0200 (Thu, 01 Jun 2006) $
+ */
+public class UrlResourceFinder implements ResourceFinder {
+ private final Object lock = new Object();
+
+ private final LinkedHashSet urls = new LinkedHashSet();
+ private final LinkedHashMap classPath = new LinkedHashMap();
+ private final LinkedHashSet watchedFiles = new LinkedHashSet();
+
+ private boolean destroyed = false;
+
+ public UrlResourceFinder() {
+ }
+
+ public UrlResourceFinder(URL[] urls) {
+ addUrls(urls);
+ }
+
+ public void destroy() {
+ synchronized (lock) {
+ if (destroyed) {
+ return;
+ }
+ destroyed = true;
+ urls.clear();
+ for (Iterator iterator = classPath.values().iterator(); iterator.hasNext();) {
+ ResourceLocation resourceLocation = (ResourceLocation) iterator.next();
+ resourceLocation.close();
+ }
+ classPath.clear();
+ }
+ }
+
+ public ResourceHandle getResource(String resourceName) {
+ synchronized (lock) {
+ if (destroyed) {
+ return null;
+ }
+ for (Iterator iterator = getClassPath().entrySet().iterator(); iterator.hasNext();) {
+ Map.Entry entry = (Map.Entry) iterator.next();
+ ResourceLocation resourceLocation = (ResourceLocation) entry.getValue();
+ ResourceHandle resourceHandle = resourceLocation.getResourceHandle(resourceName);
+ if (resourceHandle != null && !resourceHandle.isDirectory()) {
+ return resourceHandle;
+ }
+ }
+ }
+ return null;
+ }
+
+ public URL findResource(String resourceName) {
+ synchronized (lock) {
+ if (destroyed) {
+ return null;
+ }
+ for (Iterator iterator = getClassPath().entrySet().iterator(); iterator.hasNext();) {
+ Map.Entry entry = (Map.Entry) iterator.next();
+ ResourceLocation resourceLocation = (ResourceLocation) entry.getValue();
+ ResourceHandle resourceHandle = resourceLocation.getResourceHandle(resourceName);
+ if (resourceHandle != null) {
+ return resourceHandle.getUrl();
+ }
+ }
+ }
+ return null;
+ }
+
+ public Enumeration findResources(String resourceName) {
+ synchronized (lock) {
+ return new ResourceEnumeration(new ArrayList(getClassPath().values()), resourceName);
+ }
+ }
+
+ public void addUrl(URL url) {
+ addUrls(Collections.singletonList(url));
+ }
+
+ public URL[] getUrls() {
+ synchronized (lock) {
+ return (URL[]) urls.toArray(new URL[urls.size()]);
+ }
+ }
+
+ /**
+ * Adds an array of urls to the end of this class loader.
+ * @param urls the URLs to add
+ */
+ protected void addUrls(URL[] urls) {
+ addUrls(Arrays.asList(urls));
+ }
+
+ /**
+ * Adds a list of urls to the end of this class loader.
+ * @param urls the URLs to add
+ */
+ protected void addUrls(List urls) {
+ synchronized (lock) {
+ if (destroyed) {
+ throw new IllegalStateException("UrlResourceFinder has been destroyed");
+ }
+
+ boolean shouldRebuild = this.urls.addAll(urls);
+ if (shouldRebuild) {
+ rebuildClassPath();
+ }
+ }
+ }
+
+ private LinkedHashMap getClassPath() {
+ assert Thread.holdsLock(lock): "This method can only be called while holding the lock";
+
+ for (Iterator iterator = watchedFiles.iterator(); iterator.hasNext();) {
+ File file = (File) iterator.next();
+ if (file.canRead()) {
+ rebuildClassPath();
+ break;
+ }
+ }
+
+ return classPath;
+ }
+
+ /**
+ * Rebuilds the entire class path. This class is called when new URLs are added or one of the watched files
+ * becomes readable. This method will not open jar files again, but will add any new entries not alredy open
+ * to the class path. If any file based url is does not exist, we will watch for that file to appear.
+ */
+ private void rebuildClassPath() {
+ assert Thread.holdsLock(lock): "This method can only be called while holding the lock";
+
+ // copy all of the existing locations into a temp map and clear the class path
+ Map existingJarFiles = new LinkedHashMap(classPath);
+ classPath.clear();
+
+ LinkedList locationStack = new LinkedList(urls);
+ try {
+ while (!locationStack.isEmpty()) {
+ URL url = (URL) locationStack.removeFirst();
+
+ // Skip any duplicate urls in the claspath
+ if (classPath.containsKey(url)) {
+ continue;
+ }
+
+ // Check is this URL has already been opened
+ ResourceLocation resourceLocation = (ResourceLocation) existingJarFiles.remove(url);
+
+ // If not opened, cache the url and wrap it with a resource location
+ if (resourceLocation == null) {
+ try {
+ File file = cacheUrl(url);
+ resourceLocation = createResourceLocation(url, file);
+ } catch (FileNotFoundException e) {
+ // if this is a file URL, the file doesn't exist yet... watch to see if it appears later
+ if ("file".equals(url.getProtocol())) {
+ File file = new File(url.getPath());
+ watchedFiles.add(file);
+ continue;
+
+ }
+ } catch (IOException ignored) {
+ // can't seem to open the file... this is most likely a bad jar file
+ // so don't keep a watch out for it because that would require lots of checking
+ // Dain: We may want to review this decision later
+ continue;
+ }
+ }
+
+ // add the jar to our class path
+ classPath.put(resourceLocation.getCodeSource(), resourceLocation);
+
+ // push the manifest classpath on the stack (make sure to maintain the order)
+ List manifestClassPath = getManifestClassPath(resourceLocation);
+ locationStack.addAll(0, manifestClassPath);
+ }
+ } catch (Error e) {
+ destroy();
+ throw e;
+ }
+
+ for (Iterator iterator = existingJarFiles.values().iterator(); iterator.hasNext();) {
+ ResourceLocation resourceLocation = (ResourceLocation) iterator.next();
+ resourceLocation.close();
+ }
+ }
+
+ protected File cacheUrl(URL url) throws IOException {
+ if (!"file".equals(url.getProtocol())) {
+ // download the jar
+ throw new Error("Only local file jars are supported " + url);
+ }
+
+ File file = new File(url.getPath());
+ if (!file.exists()) {
+ throw new FileNotFoundException(file.getAbsolutePath());
+ }
+ if (!file.canRead()) {
+ throw new IOException("File is not readable: " + file.getAbsolutePath());
+ }
+ return file;
+ }
+
+ protected ResourceLocation createResourceLocation(URL codeSource, File cacheFile) throws IOException {
+ if (!cacheFile.exists()) {
+ throw new FileNotFoundException(cacheFile.getAbsolutePath());
+ }
+ if (!cacheFile.canRead()) {
+ throw new IOException("File is not readable: " + cacheFile.getAbsolutePath());
+ }
+
+ ResourceLocation resourceLocation = null;
+ if (cacheFile.isDirectory()) {
+ // DirectoryResourceLocation will only return "file" URLs within this directory
+ // do not user the DirectoryResourceLocation for non file based urls
+ resourceLocation = new DirectoryResourceLocation(cacheFile);
+ } else {
+ resourceLocation = new JarResourceLocation(codeSource, new JarFile(cacheFile));
+ }
+ return resourceLocation;
+ }
+
+ private List getManifestClassPath(ResourceLocation resourceLocation) {
+ try {
+ // get the manifest, if possible
+ Manifest manifest = resourceLocation.getManifest();
+ if (manifest == null) {
+ // some locations don't have a manifest
+ return Collections.EMPTY_LIST;
+ }
+
+ // get the class-path attribute, if possible
+ String manifestClassPath = manifest.getMainAttributes().getValue(Attributes.Name.CLASS_PATH);
+ if (manifestClassPath == null) {
+ return Collections.EMPTY_LIST;
+ }
+
+ // build the urls...
+ // the class-path attribute is space delimited
+ URL codeSource = resourceLocation.getCodeSource();
+ LinkedList classPathUrls = new LinkedList();
+ for (StringTokenizer tokenizer = new StringTokenizer(manifestClassPath, " "); tokenizer.hasMoreTokens();) {
+ String entry = tokenizer.nextToken();
+ try {
+ // the class path entry is relative to the resource location code source
+ URL entryUrl = new URL(codeSource, entry);
+ classPathUrls.addLast(entryUrl);
+ } catch (MalformedURLException ignored) {
+ // most likely a poorly named entry
+ }
+ }
+ return classPathUrls;
+ } catch (IOException ignored) {
+ // error opening the manifest
+ return Collections.EMPTY_LIST;
+ }
+ }
+}