Mega Code Archive
Computes all the class serialVersionUIDs under the jboss home directory
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.io.Serializable;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.security.CodeSource;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A tool/service that computes all the class serialVersionUIDs under the jboss
* home directory.
*
* @author Scott.Stark@jboss.org
* @author Dimitris.Andreadis@jboss.org
* @version $Revision: 84164 $
*/
public class SerialVersionUID {
/** A jdk logger so that only this + ClassVersionInfo are needed */
static Logger log = Logger.getLogger("SerialVersionUID");
static void buildJarSet(File dir, HashSet jarFiles) throws MalformedURLException {
File[] files = dir.listFiles();
int count = files != null ? files.length : 0;
System.out.println("Checking dir: " + dir + ", count=" + count);
for (int n = 0; n < count; n++) {
File child = files[n];
// Ignore the server tmp directory
if (child.isDirectory() && child.getName().equals("tmp") == false)
buildJarSet(child, jarFiles);
else if (child.getName().endsWith(".jar"))
jarFiles.add(child.toURL());
}
}
/**
* Build a TreeMap of the class name to ClassVersionInfo
*
* @param jar
* @param classVersionMap
* TreeMap<String, ClassVersionInfo> for serializable classes
* @param cl -
* the class loader to use
* @throws IOException
* thrown if the jar cannot be opened
*/
static void generateJarSerialVersionUIDs(URL jar, TreeMap classVersionMap, ClassLoader cl,
String pkgPrefix) throws IOException {
String jarName = jar.getFile();
JarFile jf = new JarFile(jarName);
Enumeration entries = jf.entries();
while (entries.hasMoreElements()) {
JarEntry entry = (JarEntry) entries.nextElement();
String name = entry.getName();
if (name.endsWith(".class") && name.startsWith(pkgPrefix)) {
name = name.substring(0, name.length() - 6);
String classname = name.replace('/', '.');
try {
log.fine("Creating ClassVersionInfo for: " + classname);
ClassVersionInfo cvi = new ClassVersionInfo(classname, cl);
log.fine(cvi.toString());
if (cvi.getSerialVersion() != 0) {
ClassVersionInfo prevCVI = (ClassVersionInfo) classVersionMap.put(classname, cvi);
if (prevCVI != null) {
if (prevCVI.getSerialVersion() != cvi.getSerialVersion()) {
log.severe("Found inconsistent classes, " + prevCVI + " != " + cvi + ", jar: "
+ jarName);
}
}
if (cvi.getHasExplicitSerialVersionUID() == false) {
log.warning("No explicit serialVersionUID: " + cvi);
}
}
} catch (OutOfMemoryError e) {
log.log(Level.SEVERE, "Check the MaxPermSize", e);
} catch (Throwable e) {
log.log(Level.FINE, "While loading: " + name, e);
}
}
}
jf.close();
}
/**
* Create a Map<String, ClassVersionInfo> for the jboss dist jars.
*
* @param jbossHome -
* the jboss dist root directory
* @return Map<String, ClassVersionInfo>
* @throws IOException
*/
public static Map generateJBossSerialVersionUIDReport(File jbossHome) throws IOException {
// Obtain the jars from the /lib, common/ and /server/all locations
HashSet jarFiles = new HashSet();
File lib = new File(jbossHome, "lib");
buildJarSet(lib, jarFiles);
File common = new File(jbossHome, "common");
buildJarSet(common, jarFiles);
File all = new File(jbossHome, "server/all");
buildJarSet(all, jarFiles);
URL[] cp = new URL[jarFiles.size()];
jarFiles.toArray(cp);
ClassLoader parent = Thread.currentThread().getContextClassLoader();
URLClassLoader completeClasspath = new URLClassLoader(cp, parent);
TreeMap classVersionMap = new TreeMap();
Iterator jarIter = jarFiles.iterator();
while (jarIter.hasNext()) {
URL jar = (URL) jarIter.next();
try {
generateJarSerialVersionUIDs(jar, classVersionMap, completeClasspath, "");
} catch (IOException e) {
log.info("Failed to process jar: " + jar);
}
}
return classVersionMap;
}
/**
* Create a Map<String, ClassVersionInfo> for the jboss dist jars.
*
* @param j2eeHome -
* the j2ee ri dist root directory
* @return Map<String, ClassVersionInfo>
* @throws IOException
*/
public static Map generateRISerialVersionUIDReport(File j2eeHome) throws IOException {
// Obtain the jars from the /lib
HashSet jarFiles = new HashSet();
File lib = new File(j2eeHome, "lib");
buildJarSet(lib, jarFiles);
URL[] cp = new URL[jarFiles.size()];
jarFiles.toArray(cp);
ClassLoader parent = Thread.currentThread().getContextClassLoader();
URLClassLoader completeClasspath = new URLClassLoader(cp, parent);
TreeMap classVersionMap = new TreeMap();
Iterator jarIter = jarFiles.iterator();
while (jarIter.hasNext()) {
URL jar = (URL) jarIter.next();
try {
generateJarSerialVersionUIDs(jar, classVersionMap, completeClasspath, "javax");
} catch (IOException e) {
log.info("Failed to process jar: " + jar);
}
}
return classVersionMap;
}
/**
* Generate a mapping of the serial version UIDs for the serializable classes
* under the jboss dist directory
*
* @param args -
* [0] = jboss dist root directory
* @throws Exception
*/
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println("Usage: jboss-home | -rihome ri-home");
System.exit(1);
}
File distHome = new File(args[0]);
Map classVersionMap = null;
if (args.length == 2)
classVersionMap = generateRISerialVersionUIDReport(distHome);
else
classVersionMap = generateJBossSerialVersionUIDReport(distHome);
// Write the map out the object file
log.info("Total classes with serialVersionUID != 0: " + classVersionMap.size());
FileOutputStream fos = new FileOutputStream("serialuid.ser");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(classVersionMap);
fos.close();
}
}
/**
* Encapsulates a class serialVersionUID and codebase.
*
* @author Scott.Stark@jboss.org
* @version $Revision: 81038 $
*/
class ClassVersionInfo implements Serializable {
static final long serialVersionUID = 2036506209171911437L;
/** The named class serialVersionUID as returned by ObjectStreamClass */
private long serialVersion;
/** The binary class name */
private String name;
private boolean hasExplicitSerialVersionUID;
private transient URL location;
public ClassVersionInfo(String name, ClassLoader loader) throws ClassNotFoundException {
this.name = name;
Class c = loader.loadClass(name);
CodeSource cs = c.getProtectionDomain().getCodeSource();
if (cs != null)
location = cs.getLocation();
if (c.isInterface() == false) {
ObjectStreamClass osc = ObjectStreamClass.lookup(c);
if (osc != null) {
serialVersion = osc.getSerialVersionUID();
try {
c.getDeclaredField("serialVersionUID");
hasExplicitSerialVersionUID = true;
} catch (NoSuchFieldException e) {
hasExplicitSerialVersionUID = false;
}
}
}
}
public long getSerialVersion() {
return serialVersion;
}
public boolean getHasExplicitSerialVersionUID() {
return hasExplicitSerialVersionUID;
}
public String getName() {
return name;
}
public String toString() {
StringBuffer tmp = new StringBuffer("ClassVersionInfo");
tmp.append('{');
tmp.append("serialVersion=");
tmp.append(serialVersion);
tmp.append(", hasExplicitSerialVersionUID=");
tmp.append(hasExplicitSerialVersionUID);
tmp.append(", name=");
tmp.append(name);
tmp.append(", location=");
tmp.append(location);
tmp.append('}');
return tmp.toString();
}
/**
* Usage: ClassVersionInfo class-name
*
* Locate the class name on the thread context class loader classpath and
* print its version info.
*
* @param args
* [0] = class-name
*/
public static void main(String[] args) throws Exception {
if (args.length == 0)
throw new IllegalStateException("Usage: ...ClassVersionInfo class-name");
ClassLoader loader = Thread.currentThread().getContextClassLoader();
ClassVersionInfo info = new ClassVersionInfo(args[0], loader);
System.out.println(info);
}
}
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