Apache CXF example source code file (ServiceEngineShutdown.java)

This example Apache CXF source code file (ServiceEngineShutdown.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Apache CXF tags/keywords

componentclassloader, file, file, io, jbi, jbi, jbiexception, jbiexception, log, log, logging, malformedurlexception, message, message, net, network, string, this, url

The Apache CXF ServiceEngineShutdown.java source code

/**
 * 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.cxf.jbi.se.state;

import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.jbi.JBIException;
import javax.jbi.component.ComponentContext;

import org.apache.cxf.BusFactory;
import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.configuration.Configurer;
import org.apache.cxf.jbi.se.CXFServiceUnitManager;
import org.apache.cxf.jbi.se.ComponentClassLoader;


public class ServiceEngineShutdown extends AbstractServiceEngineStateMachine {

    private static final Logger LOG = LogUtils.getL7dLogger(ServiceEngineShutdown.class);
    
       
    public void changeState(SEOperation operation, ComponentContext context) throws JBIException {
        LOG.info("in shutdown state");
        if (operation == SEOperation.init) {
            initSE(context);
            ServiceEngineStateFactory.getInstance().setCurrentState(
                ServiceEngineStateFactory.getInstance().getStopState());
        } else if (operation == SEOperation.shutdown) {
            throw new JBIException("This JBI component is already shutdown");
        } else if (operation == SEOperation.stop) {
            throw new JBIException("This operation is unsupported, cannot stop a shutdown JBI component");
        } else if (operation == SEOperation.start) {
            throw new JBIException("Cannot start a shutdown JBI component directly, need init first");
        }
    }

    private void initSE(ComponentContext context) throws JBIException {
        
        try {
            
            
            System.setProperty(PROVIDER_PROP, "org.apache.cxf.jaxws.spi.ProviderImpl");
            ctx = context;
            if (ctx == null) {
                return;
            }
            String installRoot = ctx.getInstallRoot();
            File metaInfDir = new File(installRoot, "META-INF");
            File cxfConfig = new File(metaInfDir, CXF_CONFIG_FILE); 
            
            if (cxfConfig.exists()) { 
                System.setProperty(Configurer.USER_CFG_FILE_PROPERTY_NAME,
                                   cxfConfig.toURI().toURL().toString());
                LOG.info(new Message("SE.SET.CONFIGURATION", LOG) + Configurer.USER_CFG_FILE_PROPERTY_NAME);
            } else { 
                LOG.severe(new Message("SE.NOT.FOUND.CONFIGURATION", LOG).toString() + metaInfDir);
            }
            
            ComponentClassLoader loader = createClassLoader();
            Thread.currentThread().setContextClassLoader(loader);
            initializeBus();
            suManager = new CXFServiceUnitManager(bus, ctx, loader);
            registerJBITransport(bus, suManager);
            
            LOG.info(new Message("SE.INSTALL.ROOT", LOG) + installRoot);
            LOG.info(new Message("SE.INIT.COMPLETE", LOG).toString());
                        
        } catch (Throwable e) {
            throw new JBIException(e);
        }
    }
    
    private void initializeBus() throws JBIException { 
        
        try { 
            LOG.info(new Message("SE.INIT.BUS", LOG).toString());
            if (null == bus) {
                bus = BusFactory.newInstance().createBus();
            }
            LOG.info(new Message("SE.INIT.BUS.COMPLETE", LOG).toString());
        } catch (Exception ex) { 
            LOG.log(Level.SEVERE, new Message("SE.FAILED.INIT.BUS", LOG).toString(), ex);
            throw new JBIException(ex);
        } 
    } 
    

    private ComponentClassLoader createClassLoader() throws JBIException, 
        IOException, ClassNotFoundException { 
        
        try { 
            File root = new File(ctx.getInstallRoot());
            
            File[] jars = root.listFiles(new FilenameFilter() {
                public boolean accept(File f, String name) { 
                    return name.endsWith(".jar");
                }
            });
            URL[] urls;
            if (jars.length == 0) {
                urls = new URL[0];
            } else {
                urls = new URL[jars.length];
                int i = 0;
                for (File jar : jars) { 
                    urls[i] = jar.toURI().toURL();
                    i++;
                }
            }
            
            return new ComponentClassLoader(urls, getClass().getClassLoader());
            
        } catch (MalformedURLException ex) { 
            throw new JBIException(new Message("SE.FAILED.CLASSLOADER", LOG).toString(), ex);
        } 
    } 
    
    
}