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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 java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Hashtable;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.eclipse.osgi.framework.console.CommandProvider;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.launch.Framework;
import org.osgi.framework.launch.FrameworkFactory;
/**
* Launcher for the OSGi framework using the framework launch APIs
*/
public class FrameworkLauncher implements BundleActivator {
private static final String FACTORY_RESOURCE = "META-INF/services/" + FrameworkFactory.class.getName();
private static final Logger logger = Logger.getLogger(FrameworkLauncher.class.getName());
private FrameworkFactory factory;
private boolean isEquinox;
@SuppressWarnings("unchecked")
private synchronized FrameworkFactory loadFrameworkFactory() {
if (factory == null) {
try {
ClassLoader classLoader = FrameworkFactory.class.getClassLoader();
InputStream is = classLoader.getResourceAsStream(FACTORY_RESOURCE);
if (is == null) {
classLoader = Thread.currentThread().getContextClassLoader();
is = classLoader.getResourceAsStream(FACTORY_RESOURCE);
}
if (is == null) {
return null;
}
BufferedReader reader = null;
String line = null;
try {
reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
while (true) {
line = reader.readLine();
if (line == null)
break;
line = line.trim();
if (!line.startsWith("#") && !"".equals(line)) {
break;
}
}
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
// Ignore
}
}
}
if (line != null) {
Class<? extends FrameworkFactory> factoryImplClass =
(Class<? extends FrameworkFactory>)Class.forName(line, false, classLoader);
factory = factoryImplClass.newInstance();
if (factory != null && factory.getClass().getName().startsWith("org.eclipse.osgi.")) {
isEquinox = true;
}
}
} catch (Throwable e) {
logger.log(Level.SEVERE, e.getMessage(), e);
}
}
return factory;
}
public Framework newFramework(Map properties) {
FrameworkFactory factory = loadFrameworkFactory();
if (factory == null) {
return null;
}
return factory.newFramework(properties);
}
public boolean isEquinox() {
return isEquinox;
}
public void start(BundleContext context) throws Exception {
EquinoxHost.injectedBundleContext = context;
if (context.getClass().getName().startsWith("org.eclipse.osgi.")) {
isEquinox = true;
try {
context.registerService(CommandProvider.class.getName(), new NodeLauncherCommand(), new Hashtable());
} catch (NoClassDefFoundError e) {
// Ignore it
}
}
}
public void stop(BundleContext context) throws Exception {
EquinoxHost.injectedBundleContext = null;
}
}
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