[jboss-cvs] JBossAS SVN: r58747 - branches/JBoss_3_2_7_CP/jmx/src/main/org/jboss/mx/loading
jboss-cvs-commits at lists.jboss.org
jboss-cvs-commits at lists.jboss.org
Wed Nov 29 12:40:00 EST 2006
Author: scott.stark at jboss.org
Date: 2006-11-29 12:39:58 -0500 (Wed, 29 Nov 2006)
New Revision: 58747
Added:
branches/JBoss_3_2_7_CP/jmx/src/main/org/jboss/mx/loading/ClassPreloadService.java
Log:
ASPATCH-122, add the ClassPreloadService to the jboss-jmx.jar
Added: branches/JBoss_3_2_7_CP/jmx/src/main/org/jboss/mx/loading/ClassPreloadService.java
===================================================================
--- branches/JBoss_3_2_7_CP/jmx/src/main/org/jboss/mx/loading/ClassPreloadService.java 2006-11-29 17:38:00 UTC (rev 58746)
+++ branches/JBoss_3_2_7_CP/jmx/src/main/org/jboss/mx/loading/ClassPreloadService.java 2006-11-29 17:39:58 UTC (rev 58747)
@@ -0,0 +1,205 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2006, Red Hat Middleware LLC, and individual contributors
+ * by the @authors tag. See the copyright.txt 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.
+ */
+package org.jboss.mx.loading;
+
+import java.net.URL;
+import java.io.InputStream;
+import java.io.IOException;
+import java.util.zip.ZipInputStream;
+import java.util.zip.ZipEntry;
+import java.util.Arrays;
+import java.util.ArrayList;
+
+import org.jboss.logging.Logger;
+
+/**
+ A simple service that can be used preload all classes in the classpath
+ of the thread context class loader seen in the start method as the thread
+ context class loader. A simple xmbean fragment for deploying the service
+ is:
+
+ <mbean code="org.jboss.mx.loading.ClassPreloadService"
+ name="jboss.mx:service=ClassPreloadService"
+ xmbean-dd="">
+ <xmbean>
+ <attribute access="read-write"
+ getMethod="getIncludePatterns" setMethod="setIncludePatterns">
+ <description>The suffixes for classpath includes</description>
+ <name>IncludePatterns</name>
+ <type>[Ljava.lang.String;</type>
+ </attribute>
+ <attribute access="read-write"
+ getMethod="getExcludePatterns" setMethod="setExcludePatterns">
+ <description>The suffixes for classpath excludes</description>
+ <name>ExcludePatterns</name>
+ <type>[Ljava.lang.String;</type>
+ </attribute>
+ <operation>
+ <name>start</name>
+ </operation>
+ </xmbean>
+ <attribute name="ExcludePatterns">jbossmq.jar</attribute>
+ <attribute name="IncludePatterns"></attribute>
+ </mbean>
+
+ @author Scott.Stark at jboss.org
+ @version $Revision$
+ */
+public class ClassPreloadService
+{
+ static Logger log = Logger.getLogger(ClassPreloadService.class);
+ /** The suffixes for classpath elements to include */
+ private String[] includePattern = {};
+ /** The suffixes for classpath elements to exclude */
+ private String[] excludePattern = {};
+ boolean trace;
+
+ public String[] getIncludePatterns()
+ {
+ return includePattern;
+ }
+ public void setIncludePatterns(String[] includePattern)
+ {
+ this.includePattern = includePattern;
+ }
+
+ public String[] getExcludePatterns()
+ {
+ return excludePattern;
+ }
+ public void setExcludePatterns(String[] excludePattern)
+ {
+ this.excludePattern = excludePattern;
+ }
+
+ public URL[] getRawClassPath()
+ {
+ ClassLoader loader = Thread.currentThread().getContextClassLoader();
+ URL[] fullCP = ClassLoaderUtils.getClassLoaderURLs(loader);
+ return fullCP;
+ }
+
+ /**
+ Load all classes seen the TCL classpath. This entails a scan of every
+ archive in the TCL classpath URLs for .class entries.
+ */
+ public void start()
+ {
+ trace = log.isTraceEnabled();
+ log.debug("Starting, includes="+ Arrays.asList(includePattern)
+ +", excludes="+excludePattern);
+
+ ClassLoader loader = Thread.currentThread().getContextClassLoader();
+ URL[] rawCP = ClassLoaderUtils.getClassLoaderURLs(loader);
+ URL[] cp = filterCP(rawCP, includePattern, excludePattern);
+
+ int loadedClasses = 0;
+ int loadErrors = 0;
+ for(int n = 0; n < cp.length; n ++)
+ {
+ URL u = cp[n];
+ try
+ {
+ InputStream is = u.openStream();
+ ZipInputStream zis = new ZipInputStream(is);
+ ZipEntry ze = zis.getNextEntry();
+ while (ze != null)
+ {
+ String name = ze.getName();
+ if (name.endsWith(".class"))
+ {
+ int length = name.length();
+ String cname = name.replace('/', '.').substring(0, length - 6);
+ try
+ {
+ Class c = loader.loadClass(cname);
+ loadedClasses ++;
+ if (trace)
+ log.trace("loaded class: " + cname);
+ }
+ catch (Throwable e)
+ {
+ loadErrors ++;
+ if( trace )
+ log.trace("Failed to load class, "+e.getMessage());
+ }
+ }
+ ze = zis.getNextEntry();
+ }
+ zis.close();
+ }
+ catch (IOException ignore)
+ {
+ // Not a jar
+ }
+ }
+ log.info("Loaded "+loadedClasses+" classes, "+loadErrors+" CNFEs");
+ }
+
+ public URL[] filterCP(URL[] rawCP, String[] includes, String[] excludes)
+ {
+ if( trace )
+ log.trace("filterCP, rawCP="+Arrays.asList(rawCP));
+ ArrayList tmp = new ArrayList();
+ int count = rawCP != null ? rawCP.length : 0;
+ for(int m = 0; m < count; m ++)
+ {
+ URL pathURL = rawCP[m];
+ String path = pathURL.toString();
+ boolean excluded = false;
+
+ // Excludes take priority over includes
+ for(int n = 0; n < excludes.length; n ++)
+ {
+ String p = excludes[n];
+ if( path.endsWith(p) )
+ {
+ excluded = true;
+ break;
+ }
+ }
+ if( excluded )
+ {
+ log.debug("Excluded: "+pathURL);
+ continue;
+ }
+
+ // If there are no explicit includes, accept the non-excluded paths
+ boolean included = includes.length == 0;
+ for(int n = 0; n < includes.length; n ++)
+ {
+ String p = includes[n];
+ if( path.endsWith(p) )
+ tmp.add(pathURL);
+ }
+ if( included )
+ {
+ log.debug("Included: "+pathURL);
+ tmp.add(pathURL);
+ }
+ }
+ URL[] cp = new URL[tmp.size()];
+ tmp.toArray(cp);
+ return cp;
+ }
+
+}
Property changes on: branches/JBoss_3_2_7_CP/jmx/src/main/org/jboss/mx/loading/ClassPreloadService.java
___________________________________________________________________
Name: svn:keywords
+ Id Revision
Name: svn:eol-style
+ LF
More information about the jboss-cvs-commits
mailing list