[jboss-cvs] JBossAS SVN: r58510 - trunk/tomcat/src/main/org/jboss/web/tomcat/tc6/deployers

[jboss-cvs-commits at lists.jboss.org]

Author: scott.stark at jboss.org
Date: 2006-11-17 21:03:15 -0500 (Fri, 17 Nov 2006)
New Revision: 58510

Added:
   trunk/tomcat/src/main/org/jboss/web/tomcat/tc6/deployers/WarClassLoaderDeployer.java
Log:
An in progress web app class loading deployer

Added: trunk/tomcat/src/main/org/jboss/web/tomcat/tc6/deployers/WarClassLoaderDeployer.java
===================================================================
--- trunk/tomcat/src/main/org/jboss/web/tomcat/tc6/deployers/WarClassLoaderDeployer.java	2006-11-18 02:02:27 UTC (rev 58509)
+++ trunk/tomcat/src/main/org/jboss/web/tomcat/tc6/deployers/WarClassLoaderDeployer.java	2006-11-18 02:03:15 UTC (rev 58510)
@@ -0,0 +1,190 @@
+/*
+ * 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.web.tomcat.tc6.deployers;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.catalina.Loader;
+import org.jboss.deployers.plugins.deployer.AbstractSimpleDeployer;
+import org.jboss.deployers.spi.DeploymentException;
+import org.jboss.deployers.spi.classloader.ClassLoaderFactory;
+import org.jboss.deployers.spi.deployer.DeploymentUnit;
+import org.jboss.deployers.spi.structure.DeploymentContext;
+import org.jboss.metadata.WebMetaData;
+import org.jboss.virtual.VirtualFile;
+import org.jboss.web.tomcat.tc6.TomcatInjectionContainer;
+import org.jboss.web.tomcat.tc6.WebAppLoader;
+import org.jboss.web.tomcat.tc6.WebCtxLoader;
+
+/**
+ * A class loader deployer for wars that handles installing a war first class
+ * loader unless the WebMetaData indicates otherwise.
+ * AbstractClassLoaderDeployer
+ * 
+ * @author Scott.Stark at jboss.org
+ * @version $Revision:$
+ */
+public class WarClassLoaderDeployer extends AbstractSimpleDeployer
+   implements ClassLoaderFactory
+{
+   /** The parent class loader first model flag */
+   private boolean java2ClassLoadingCompliance = false;
+   private boolean useJBossWebLoader;
+   /** Package names that should be ignored for class loading */
+   private String[] filteredPackages;
+
+   public WarClassLoaderDeployer()
+   {
+      // Should be after the default class loading deployer to pickup parent cl
+      super.setRelativeOrder(CLASSLOADER_DEPLOYER - 1);
+   }
+
+   public boolean isJava2ClassLoadingCompliance()
+   {
+      return java2ClassLoadingCompliance;
+   }
+   public void setJava2ClassLoadingCompliance(boolean flag)
+   {
+      this.java2ClassLoadingCompliance = flag;
+   }
+
+   public String[] getFilteredPackages()
+   {
+      return filteredPackages;
+   }
+   public void setFilteredPackages(String[] pkgs)
+   {
+      this.filteredPackages = pkgs;
+   }
+
+   public boolean isUseJBossWebLoader()
+   {
+      return useJBossWebLoader;
+   }
+   public void setUseJBossWebLoader(boolean useJBossWebLoader)
+   {
+      this.useJBossWebLoader = useJBossWebLoader;
+   }
+
+   
+   @Override
+   public void deploy(DeploymentUnit unit) throws DeploymentException
+   {
+      WebMetaData metaData = unit.getAttachment(WebMetaData.class);
+      if( metaData != null )
+      {
+         unit.addAttachment(ClassLoaderFactory.class, this);
+      }
+   }
+
+   public ClassLoader createClassLoader(DeploymentContext context) throws Exception
+   {
+      ClassLoader loader = null;
+      try
+      {
+         DeploymentUnit unit = context.getDeploymentUnit();
+         WebMetaData metaData = unit.getAttachment(WebMetaData.class);
+         loader = createClassLoader(metaData, context);
+         if( loader != null )
+            context.setClassLoader(loader);
+      }
+      catch(Exception e)
+      {
+         log.warn("", e);
+      }
+      return loader;
+   }
+
+   public void removeClassLoader(DeploymentContext context) throws Exception
+   {
+      
+   }
+
+   /**
+    * 
+    */
+   protected ClassLoader createClassLoader(WebMetaData metaData, DeploymentContext context)
+         throws Exception
+   {
+      ClassLoader loader = null;
+      if (metaData != null)
+      {
+         ClassLoader parent = context.getClassLoader();
+         if( parent == null )
+            parent = context.getTopLevel().getClassLoader();
+         if( parent == null )
+            parent = Thread.currentThread().getContextClassLoader();
+         Loader webLoader = getWebLoader(parent, metaData, context.getClassPath());
+         context.getDeploymentUnit().addAttachment(Loader.class, webLoader);
+         loader = webLoader.getClassLoader();
+      }
+      return loader;
+   }
+
+   /**
+    * Create the web app class loader.
+    * 
+    * @param loader
+    * @param metaData
+    * @param classpath
+    * @return
+    * @throws MalformedURLException
+    */
+   protected Loader getWebLoader(ClassLoader loader, WebMetaData metaData,
+         List<VirtualFile> classpath)
+         throws Exception
+   {
+      Loader webLoader = null;
+      TomcatInjectionContainer injectionContainer = null;
+      if (useJBossWebLoader)
+      {
+         WebCtxLoader jbossLoader = new WebCtxLoader(loader, injectionContainer);
+         ArrayList<URL> cp = new ArrayList<URL>();
+         for(VirtualFile vf : classpath)
+         {
+            try
+            {
+               URL path = vf.toURL();
+               cp.add(path);
+            }
+            catch(Exception e)
+            {
+               log.debug("Ignoring path element: "+vf, e);
+            }
+         }
+         jbossLoader.setClasspath(cp);
+         webLoader = jbossLoader;
+      }
+      else
+      {
+         WebAppLoader jbossLoader = new WebAppLoader(loader, filteredPackages, injectionContainer);
+         jbossLoader.setDelegate(java2ClassLoadingCompliance);
+         jbossLoader.start();
+         webLoader = jbossLoader;
+      }
+      return webLoader;
+   }
+
+}