/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* 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.as.weld.services.bootstrap;
import org.jboss.as.server.moduleservice.ServiceModuleLoader;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleClassLoader;
import org.jboss.weld.exceptions.WeldException;
import org.jboss.weld.logging.messages.BeanMessage;
import org.jboss.weld.serialization.spi.ProxyServices;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* {@link ProxyServices} implementation that delegates to the module class loader if the bean class loader cannot be determined
*
* @author Stuart Douglas
*
*/
public class ProxyServicesImpl implements ProxyServices {
private final Module module;
public ProxyServicesImpl(Module module) {
this.module = module;
}
public ClassLoader getClassLoader(final Class<?> proxiedBeanType) {
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
public ClassLoader run() {
return _getClassLoader(proxiedBeanType);
}
});
} else {
return _getClassLoader(proxiedBeanType);
}
}
private ClassLoader _getClassLoader(Class<?> proxiedBeanType) {
if (proxiedBeanType.getName().startsWith("java")) {
return module.getClassLoader();
} else if(proxiedBeanType.getClassLoader() instanceof ModuleClassLoader) {
final ModuleClassLoader loader = (ModuleClassLoader)proxiedBeanType.getClassLoader();
//even though this is not strictly spec compliant if a class from the app server is
//being proxied we use the deployment CL to prevent a memory leak
//in theory this means that package private methods will not work correctly
//however the application does not have access to package private methods anyway
//as it is in a different class loader
if(loader.getModule().getModuleLoader() instanceof ServiceModuleLoader) {
//this is a dynamic module
//we can use it to load the proxy
return proxiedBeanType.getClassLoader();
} else {
//otherwise we use the deployments CL
//rather than using a server modules CL
return module.getClassLoader();
}
} else {
return proxiedBeanType.getClassLoader();
}
}
public void cleanup() {
// This implementation requires no cleanup
}
public Class<?> loadBeanClass(final String className) {
try {
return (Class<?>) AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
public Object run() throws Exception {
return Class.forName(className, true, getClassLoader(this.getClass()));
}
});
} catch (PrivilegedActionException pae) {
throw new WeldException(BeanMessage.CANNOT_LOAD_CLASS, className, pae.getException());
}
}
}