/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.openejb.core.osgi.impl;
import java.io.File;
import java.net.URL;
import java.util.Enumeration;
import java.util.Properties;
import org.apache.openejb.assembler.classic.AppInfo;
import org.apache.openejb.assembler.classic.Assembler;
import org.apache.openejb.assembler.classic.EjbJarInfo;
import org.apache.openejb.assembler.classic.EnterpriseBeanInfo;
import org.apache.openejb.config.AppModule;
import org.apache.openejb.config.ConfigurationFactory;
import org.apache.openejb.config.DeploymentLoader;
import org.apache.openejb.loader.SystemInstance;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.BundleListener;
/**
* @version $Rev: 831104 $ $Date: 2009-10-29 14:46:29 -0700 (Thu, 29 Oct 2009) $
*/
public class Deployer implements BundleListener {
public void bundleChanged(BundleEvent event) {
switch (event.getType()) {
case BundleEvent.STARTED:
deploy(event.getBundle());
break;
case BundleEvent.STOPPED:
undeploy(event.getBundle());
break;
}
}
private void deploy(Bundle bundle) {
System.out.println(String.format("[Deployer] Bundle %s has been started", bundle.getSymbolicName()));
System.out.println(String.format("[Deployer] Checking whether it's an EJB module"));
Enumeration<?> e = bundle.findEntries("META-INF", "ejb-jar.xml", false);
if (e.hasMoreElements()) {
URL ejbJarUrl = (URL) e.nextElement();
System.out.println("[Deployer] It's an EJB module: " + ejbJarUrl);
System.out.println("[Deployer] Deploying onto OpenEJB");
String location = bundle.getLocation();
System.out.println("[Deployer] bundle location: " + location);
try {
File file = new File(new URL(location).getFile());
try {
DeploymentLoader deploymentLoader = new DeploymentLoader();
AppModule appModule = deploymentLoader.load(file);
ConfigurationFactory configurationFactory = new ConfigurationFactory();
AppInfo appInfo = configurationFactory.configureApplication(appModule);
Assembler assembler = (Assembler) SystemInstance.get().getComponent(Assembler.class);
System.out.println(assembler);
System.out.println(appInfo);
assembler.createApplication(appInfo);
System.out.println("[Deployer] Application deployed: " + appInfo.jarPath);
registerService(bundle, appInfo);
} catch (Exception ex) {
ex.printStackTrace();
}
} catch (Exception ex1) {
ex1.printStackTrace();
}
}
}
private void undeploy(Bundle bundle) {
System.out.println(String.format("[Deployer] Bundle %s has been stopped", bundle.getSymbolicName()));
// Let's others finish what needs to be here
// It should leave openejb in the state as if the ejb had not been deployed at all
// Step 1. Check whether it's an ejb (cf. deploy method above)
// Step 2. Unregister a service (cf. deploy method above)
}
/**
* Register OSGi Service for EJB so calling the service will actually call the EJB
*
* @param bundle
* @param appInfo
*/
private void registerService(Bundle bundle, AppInfo appInfo) {
System.out.println("[Deployer] Registering a service for the EJB");
BundleContext context = bundle.getBundleContext();
for (EjbJarInfo ejbJarInfo : appInfo.ejbJars) {
for (EnterpriseBeanInfo ejbInfo : ejbJarInfo.enterpriseBeans) {
try {
context.registerService(ejbInfo.businessRemote.toArray(new String[0]), bundle.loadClass(
ejbInfo.ejbClass).newInstance(), new Properties());
System.out.println(String.format(
"[Deployer] Service object %s registered under the class names: %s", ejbInfo.ejbClass,
ejbInfo.businessRemote));
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}