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package org.glassfish.jersey.examples.osgihttpservice;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import org.glassfish.jersey.servlet.ServletContainer;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventAdmin;
import org.osgi.service.http.HttpService;
import org.osgi.service.http.NamespaceException;
import org.osgi.util.tracker.ServiceTracker;
public class Activator implements BundleActivator {
private BundleContext bc;
private ServiceTracker tracker;
private HttpService httpService = null;
private static final Logger logger = Logger.getLogger(Activator.class.getName());
@Override
public synchronized void start(BundleContext bundleContext) throws Exception {
this.bc = bundleContext;
logger.info("STARTING HTTP SERVICE BUNDLE");
this.tracker = new ServiceTracker(this.bc, HttpService.class.getName(), null) {
@Override
public Object addingService(ServiceReference serviceRef) {
httpService = (HttpService)super.addingService(serviceRef);
registerServlets();
return httpService;
}
@Override
public void removedService(ServiceReference ref, Object service) {
if (httpService == service) {
unregisterServlets();
httpService = null;
}
super.removedService(ref, service);
}
};
this.tracker.open();
logger.info("HTTP SERVICE BUNDLE STARTED");
}
@Override
public synchronized void stop(BundleContext bundleContext) throws Exception {
this.tracker.close();
}
private void registerServlets() {
try {
rawRegisterServlets();
} catch (InterruptedException ie) {
throw new RuntimeException(ie);
} catch (ServletException se) {
throw new RuntimeException(se);
} catch (NamespaceException se) {
throw new RuntimeException(se);
}
}
private void rawRegisterServlets() throws ServletException, NamespaceException, InterruptedException {
logger.info("JERSEY BUNDLE: REGISTERING SERVLETS");
logger.info("JERSEY BUNDLE: HTTP SERVICE = " + httpService.toString());
httpService.registerServlet("/jersey-http-service", new ServletContainer(), getJerseyServletParams(), null);
sendAdminEvent();
logger.info("JERSEY BUNDLE: SERVLETS REGISTERED");
}
private void sendAdminEvent() {
ServiceReference eaRef = bc.getServiceReference(EventAdmin.class.getName());
if (eaRef != null) {
EventAdmin ea = (EventAdmin) bc.getService(eaRef);
ea.sendEvent(new Event("jersey/test/DEPLOYED", new HashMap<String, String>() {
{
put("context-path", "/");
}
}));
bc.ungetService(eaRef);
}
}
private void unregisterServlets() {
if (this.httpService != null) {
logger.info("JERSEY BUNDLE: UNREGISTERING SERVLETS");
httpService.unregister("/jersey-http-service");
logger.info("JERSEY BUNDLE: SERVLETS UNREGISTERED");
}
}
@SuppressWarnings("UseOfObsoleteCollectionType")
private Dictionary<String, String> getJerseyServletParams() {
Dictionary<String, String> jerseyServletParams = new Hashtable<String, String>();
jerseyServletParams.put("javax.ws.rs.Application", JerseyApplication.class.getName());
return jerseyServletParams;
}
}