/*
* Copyright (c) 2009, KNOPFLERFISH project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* - Neither the name of the KNOPFLERFISH project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.knopflerfish.bundle.console2command;
import java.io.*;
import java.util.Dictionary;
import java.util.Hashtable;
import java.util.HashMap;
import java.util.Map;
import org.osgi.service.command.*;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleException;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceReference;
import org.osgi.service.log.LogService;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
import org.knopflerfish.service.console.CommandGroup;
import org.knopflerfish.service.console.CommandGroupAdapter;
public class Activator implements BundleActivator {
static BundleContext bc;
ServiceTracker cmdTracker;
public void start(BundleContext bc) throws Exception {
this.bc = bc;
cmdTracker = new ServiceTracker(bc,
CommandGroup.class.getName(),
cmdTrackerCustomizer);
cmdTracker.open();
}
public void stop(BundleContext bc) {
cmdTracker.close();
cmdTracker = null;
this.bc = null;
}
Map/*<ServiceReference, ConsoleWrapper>*/ wrappers = new HashMap();
ServiceTrackerCustomizer cmdTrackerCustomizer =
new ServiceTrackerCustomizer() {
public Object addingService(ServiceReference sr) {
Object obj = bc.getService(sr);
modifiedService(sr, obj);
return obj;
}
public void modifiedService(ServiceReference sr, Object service) {
synchronized(wrappers) {
ConsoleWrapper wrapper = (ConsoleWrapper)wrappers.get(sr);
if(wrapper != null) {
wrapper.close();
wrappers.remove(sr);
}
if(service instanceof CommandGroupAdapter) {
wrapper = new ConsoleWrapper(bc, sr, (CommandGroupAdapter)service);
wrappers.put(sr, wrapper);
wrapper.open();
}
}
}
public void removedService(ServiceReference sr, Object service) {
synchronized(wrappers) {
ConsoleWrapper wrapper = (ConsoleWrapper)wrappers.get(sr);
if(wrapper != null) {
wrapper.close();
wrappers.remove(sr);
}
}
}
};
}