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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.osgi.runtime;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import org.osgi.framework.BundleContext;
/**
* Implementation of an OSGi Runtime using Equinox.
*
* @version $Rev$ $Date$
*/
public class EquinoxRuntime extends OSGiRuntime {
private static BundleContext bundleContext;
private static EquinoxRuntime instance;
private static Class<?> eclipseStarterClass;
public static OSGiRuntime getInstance() throws Exception {
if (instance == null) {
eclipseStarterClass = EquinoxRuntime.class.getClassLoader().loadClass("org.eclipse.core.runtime.adaptor.EclipseStarter");
EquinoxRuntime runtime = new EquinoxRuntime();
instance = runtime;
}
return instance;
}
@Override
protected BundleContext startRuntime(boolean tuscanyRunningInOSGiContainer) throws Exception {
if (bundleContext != null)
return bundleContext;
Method startupMethod = eclipseStarterClass.getMethod("startup", String [].class, Runnable.class);
// Equinox version 3.2 upwards have a startup method which returns BundleContext
if (startupMethod.getReturnType() == BundleContext.class) {
bundleContext = (BundleContext) startupMethod.invoke(null, new String[] {"-clean", "-console"}, null );
}
else {
// Older versions of Equinox don't have a public method to obtain system bundlecontext
// Extract bundleContext from the private field 'context'. We are assuming that
// there is no access restriction
Method mainMethod = eclipseStarterClass.getMethod("main", String [].class);
mainMethod.invoke(null, (Object)new String[] {"-clean", "-console"});
Field contextField = eclipseStarterClass.getDeclaredField("context");
contextField.setAccessible(true);
bundleContext = (BundleContext) contextField.get(null);
}
return bundleContext;
}
@Override
public BundleContext getBundleContext() {
return bundleContext;
}
@Override
protected void setBundleContext(BundleContext bundleContext) {
super.setBundleContext(bundleContext);
EquinoxRuntime.bundleContext = bundleContext;
}
@Override
public void shutdown() throws Exception {
if (bundleContext == null)
return;
bundleContext = null;
instance = null;
if (eclipseStarterClass != null) {
Method shutdownMethod = eclipseStarterClass.getMethod("shutdown");
try {
shutdownMethod.invoke(eclipseStarterClass);
} catch (Exception e) {
// Ignore errors.
}
}
super.shutdown();
}
@Override
public boolean supportsBundleFragments() {
return false;
}
}
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