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/*
* 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.tuscany.sca.node.equinox.launcher;
import static org.apache.tuscany.sca.node.equinox.launcher.NodeLauncherUtil.node;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.osgi.framework.BundleContext;
/**
* A launcher for SCA nodes.
*
* @version $Rev$ $Date$
*/
public class NodeLauncher2 {
static final Logger logger = Logger.getLogger(NodeLauncher2.class.getName());
private EquinoxHost equinoxHost;
private BundleContext bundleContext;
/**
* Constructs a new node launcher.
*/
private NodeLauncher2() {
equinoxHost = new EquinoxHost();
bundleContext = equinoxHost.start();
}
/**
* Returns a new launcher instance.
*
* @return a new launcher instance
*/
public static NodeLauncher2 newInstance() {
return new NodeLauncher2();
}
/**
* Creates a new SCA node from the configuration URL
*
* @param configurationURL the URL of the node configuration which is the ATOM feed
* that contains the URI of the composite and a collection of URLs for the contributions
*
* @return a new SCA node.
* @throws LauncherException
*/
public <T> T createNode(String configurationURL) throws LauncherException {
return (T)node(configurationURL, null, null, null, bundleContext);
}
/**
* Creates a new SCA OSGi Node.
*
* @param compositeURI the URI of the composite to use
* @param contributions the URI of the contributions that provides the composites and related
* artifacts. If the list is empty, then we will use the thread context classloader to discover
* the contribution on the classpath
*
* @return a new SCA node.
* @throws LauncherException
*/
public <T> T createNode(String compositeURI, Contribution... contributions) throws LauncherException {
return (T)node(null, compositeURI, null, contributions, bundleContext);
}
/**
* Creates a new SCA OSGi Node.
*
* @param compositeURI the URI of the composite to use
* @param compositeContent the XML content of the composite to use
* @param contributions the URI of the contributions that provides the composites and related artifacts
* @return a new SCA node.
* @throws LauncherException
*/
public <T> T createNode(String compositeURI, String compositeContent, Contribution... contributions)
throws LauncherException {
return (T)node(null, compositeURI, compositeContent, contributions, bundleContext);
}
public static void main(String[] args) throws Exception {
logger.info("Apache Tuscany SCA Node is starting...");
// Create a node launcher
NodeLauncher2 launcher = newInstance();
EquinoxHost equinox = launcher.equinoxHost;
Object node = null;
ShutdownThread shutdown = null;
try {
Contribution[] contributions = new Contribution[args.length];
for (int i=0; i<args.length; i++) {
File f = new File(args[i]);
if (!f.exists()) {
System.err.println("contribution not found: " + f);
System.exit(1);
}
contributions[i] = new Contribution(f.toURI().toString(), f.toURI().toString());
}
// Create a node from a composite URI and a contribution location
// String contributionLocation = args[1];
// logger.info("SCA composite: " + null);
// logger.info("SCA contribution: " + contributionLocation);
node = launcher.createNode(null, contributions);
// Start the node
try {
node.getClass().getMethod("start").invoke(node);
} catch (Exception e) {
logger.log(Level.SEVERE, "SCA Node could not be started", e);
throw e;
}
logger.info("SCA Node is now started.");
// Install a shutdown hook
shutdown = new ShutdownThread(node, equinox);
Runtime.getRuntime().addShutdownHook(shutdown);
logger.info("Press enter to shutdown.");
try {
System.in.read();
} catch (IOException e) {
// Wait forever
Object lock = new Object();
synchronized(lock) {
lock.wait();
}
}
} finally {
// Remove the shutdown hook
if (shutdown != null) {
Runtime.getRuntime().removeShutdownHook(shutdown);
}
// Stop the node
if (node != null) {
destroyNode(node);
}
if (equinox != null) {
equinox.stop();
}
}
}
public void destroy() {
if (equinoxHost != null) {
equinoxHost.stop();
bundleContext = null;
}
}
/**
* Stop the given node.
*
* @param node
* @throws Exception
*/
private static void destroyNode(Object node) throws Exception {
try {
node.getClass().getMethod("stop").invoke(node);
node.getClass().getMethod("destroy").invoke(node);
logger.info("SCA Node is now stopped.");
} catch (Exception e) {
logger.log(Level.SEVERE, "SCA Node could not be stopped", e);
throw e;
}
}
private static class ShutdownThread extends Thread {
private Object node;
private EquinoxHost equinox;
public ShutdownThread(Object node, EquinoxHost equinox) {
super();
this.node = node;
this.equinox = equinox;
}
@Override
public void run() {
try {
destroyNode(node);
} catch (Exception e) {
// Ignore
}
try {
equinox.stop();
} catch (Exception e) {
// Ignore
}
}
}
}
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