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/*******************************************************************************
* Copyright (c) 2011, 2012 Wind River Systems, Inc. and others. All rights reserved.
* This program and the accompanying materials are made available under the terms
* of the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.processes.core.activator;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.tcf.protocol.Protocol;
import org.eclipse.tcf.te.runtime.tracing.TraceHandler;
import org.eclipse.tcf.te.tcf.locator.interfaces.IPeerModelListener;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerModel;
import org.eclipse.tcf.te.tcf.locator.model.ModelManager;
import org.eclipse.tcf.te.tcf.processes.core.model.listener.ModelListener;
import org.osgi.framework.BundleContext;
/**
* The activator class controls the plug-in life cycle
*/
public class CoreBundleActivator extends Plugin {
// The bundle context
private static BundleContext context;
// The trace handler instance
private static volatile TraceHandler traceHandler;
// The locator model listener instance
/* default */ IPeerModelListener listener;
// The shared instance
private static CoreBundleActivator plugin;
/**
* Returns the bundle context
*
* @return the bundle context
*/
public static BundleContext getContext() {
return context;
}
/**
* Returns the shared instance
*
* @return the shared instance
*/
public static CoreBundleActivator getDefault() {
return plugin;
}
/**
* Convenience method which returns the unique identifier of this plugin.
*/
public static String getUniqueIdentifier() {
if (getContext() != null && getContext().getBundle() != null) {
return getContext().getBundle().getSymbolicName();
}
return "org.eclipse.tcf.te.tcf.processes.core"; //$NON-NLS-1$
}
/**
* Returns the bundles trace handler.
*
* @return The bundles trace handler.
*/
public static TraceHandler getTraceHandler() {
if (traceHandler == null) {
traceHandler = new TraceHandler(getUniqueIdentifier());
}
return traceHandler;
}
/* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
*/
@Override
public void start(BundleContext bundleContext) throws Exception {
CoreBundleActivator.context = bundleContext;
plugin = this;
// Create the model listener instance
listener = new ModelListener();
Runnable runnable = new Runnable() {
@Override
public void run() {
if (listener == null) return;
// Register the model listener with the locator model
ModelManager.getPeerModel().addListener(listener);
}
};
Protocol.invokeLater(runnable);
}
/* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
*/
@Override
public void stop(BundleContext bundleContext) throws Exception {
CoreBundleActivator.context = null;
plugin = null;
// Remove the model listener from the locator model
if (listener != null) {
Runnable runnable = new Runnable() {
@Override
public void run() {
IPeerModel model = ModelManager.getPeerModel(true);
if (model != null) model.removeListener(listener);
listener = null;
}
};
if (Protocol.isDispatchThread()) runnable.run();
else Protocol.invokeAndWait(runnable);
}
}
}
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