Examples with ServiceDiscoveryHandler ch.ethz.iks.r_osgi.service_discovery.ServiceDiscoveryHandler used on opensource projects

Example 1 with ServiceDiscoveryHandler

use of ch.ethz.iks.r_osgi.service_discovery.ServiceDiscoveryHandler in project ecf by eclipse.

the class RemoteOSGiServiceImpl method registerWithServiceDiscovery.

/**
 * register a service with the remote service discovery layer.
 */
void registerWithServiceDiscovery(final RemoteServiceRegistration reg) {
    // register the service with all service
    // discovery handler
    final Object[] handler = serviceDiscoveryHandlerTracker.getServices();
    if (handler != null) {
        for (int i = 0; i < handler.length; i++) {
            final Dictionary props = reg.getProperties();
            ((ServiceDiscoveryHandler) handler[i]).registerService(reg.getReference(), props, URI.create(// $NON-NLS-1$
            "r-osgi://" + RemoteOSGiServiceImpl.MY_ADDRESS + // $NON-NLS-1$
            ":" + RemoteOSGiServiceImpl.R_OSGI_PORT + // $NON-NLS-1$
            "#" + reg.getServiceID()));
        }
    }
}

Example 2 with ServiceDiscoveryHandler

use of ch.ethz.iks.r_osgi.service_discovery.ServiceDiscoveryHandler in project ecf by eclipse.

the class RemoteOSGiServiceImpl method setupTrackers.

private void setupTrackers(final BundleContext context) throws IOException {
    // initialize service trackers
    eventAdminTracker = new ServiceTracker(context, EventAdmin.class.getName(), null);
    eventAdminTracker.open();
    if (eventAdminTracker.getTrackingCount() == 0 && log != null) {
        log.log(LogService.LOG_WARNING, // $NON-NLS-1$
        "NO EVENT ADMIN FOUND. REMOTE EVENT DELIVERY TEMPORARILY DISABLED.");
    }
    try {
        eventHandlerTracker = new ServiceTracker(context, context.createFilter(// $NON-NLS-1$ //$NON-NLS-2$
        "(&(" + Constants.OBJECTCLASS + "=" + EventHandler.class.getName() + // $NON-NLS-1$
        ")(|(!(" + R_OSGi_INTERNAL + // $NON-NLS-1$
        "=*))" + // https://bugs.eclipse.org/418740
        "(!(" + // $NON-NLS-1$
        EventConstants.EVENT_TOPIC + // $NON-NLS-1$
        "=org/osgi/service/remoteserviceadmin/*))))"), new ServiceTrackerCustomizer() {

            public Object addingService(final ServiceReference reference) {
                // https://bugs.eclipse.org/bugs/show_bug.cgi?id=326033
                Collection theTopics;
                Object topic = reference.getProperty(EventConstants.EVENT_TOPIC);
                if (topic instanceof String)
                    theTopics = Arrays.asList(new String[] { (String) topic });
                else
                    theTopics = Arrays.asList((String[]) topic);
                // Remove filtered topics
                theTopics = StringUtils.rightDifference(topicFilters, theTopics);
                final LeaseUpdateMessage lu = new LeaseUpdateMessage();
                lu.setType(LeaseUpdateMessage.TOPIC_UPDATE);
                // $NON-NLS-1$
                lu.setServiceID("");
                lu.setPayload(new Object[] { theTopics.toArray(new String[theTopics.size()]), null });
                updateLeases(lu);
                return theTopics;
            }

            public void modifiedService(final ServiceReference reference, final Object oldTopics) {
                final List oldTopicList = (List) oldTopics;
                // https://bugs.eclipse.org/bugs/show_bug.cgi?id=326033
                Collection newTopicList;
                Object topic = reference.getProperty(EventConstants.EVENT_TOPIC);
                if (topic instanceof String)
                    newTopicList = Arrays.asList(new String[] { (String) topic });
                else
                    newTopicList = Arrays.asList((String[]) topic);
                // Remove filtered topics
                newTopicList = StringUtils.rightDifference(topicFilters, newTopicList);
                final Collection removed = CollectionUtils.rightDifference(newTopicList, oldTopicList);
                final Collection added = CollectionUtils.leftDifference(newTopicList, oldTopicList);
                final String[] addedTopics = (String[]) added.toArray(new String[removed.size()]);
                final String[] removedTopics = (String[]) removed.toArray(addedTopics);
                oldTopicList.removeAll(removed);
                oldTopicList.addAll(added);
                final LeaseUpdateMessage lu = new LeaseUpdateMessage();
                lu.setType(LeaseUpdateMessage.TOPIC_UPDATE);
                // $NON-NLS-1$
                lu.setServiceID("");
                lu.setPayload(new Object[] { addedTopics, removedTopics });
                updateLeases(lu);
            }

            public void removedService(final ServiceReference reference, final Object oldTopics) {
                final List oldTopicsList = (List) oldTopics;
                final String[] removedTopics = (String[]) oldTopicsList.toArray(new String[oldTopicsList.size()]);
                final LeaseUpdateMessage lu = new LeaseUpdateMessage();
                lu.setType(LeaseUpdateMessage.TOPIC_UPDATE);
                // $NON-NLS-1$
                lu.setServiceID("");
                lu.setPayload(new Object[] { null, removedTopics });
                updateLeases(lu);
            }
        });
        eventHandlerTracker.open();
        if (DEBUG) {
            log.log(LogService.LOG_DEBUG, // $NON-NLS-1$
            "Local topic space " + Arrays.asList(getTopics()));
        }
        remoteServiceListenerTracker = new ServiceTracker(context, RemoteServiceListener.class.getName(), null);
        remoteServiceListenerTracker.open();
        serviceDiscoveryHandlerTracker = new ServiceTracker(context, ServiceDiscoveryHandler.class.getName(), new ServiceTrackerCustomizer() {

            public Object addingService(final ServiceReference reference) {
                // register all known services for discovery
                final ServiceDiscoveryHandler handler = (ServiceDiscoveryHandler) context.getService(reference);
                RemoteServiceRegistration[] regs = null;
                synchronized (serviceRegistrations) {
                    regs = (RemoteServiceRegistration[]) serviceRegistrations.values().toArray(new RemoteServiceRegistration[serviceRegistrations.size()]);
                }
                for (int i = 0; i < regs.length; i++) {
                    handler.registerService(regs[i].getReference(), regs[i].getProperties(), URI.create(// $NON-NLS-1$
                    "r-osgi://" + RemoteOSGiServiceImpl.MY_ADDRESS + // $NON-NLS-1$
                    ":" + RemoteOSGiServiceImpl.R_OSGI_PORT + // $NON-NLS-1$
                    "#" + regs[i].getServiceID()));
                }
                return handler;
            }

            public void modifiedService(final ServiceReference reference, final Object service) {
            }

            public void removedService(final ServiceReference reference, final Object service) {
            }
        });
        serviceDiscoveryHandlerTracker.open();
        remoteServiceTracker = new ServiceTracker(context, context.createFilter(// $NON-NLS-1$
        "(" + RemoteOSGiService.R_OSGi_REGISTRATION + "=*)"), new // $NON-NLS-1$
        ServiceTrackerCustomizer() {

            public Object addingService(final ServiceReference reference) {
                // FIXME: Surrogates have to be monitored
                // separately!!!
                final ServiceReference service = Arrays.asList((String[]) reference.getProperty(Constants.OBJECTCLASS)).contains(SurrogateRegistration.class.getName()) ? (ServiceReference) reference.getProperty(SurrogateRegistration.SERVICE_REFERENCE) : reference;
                try {
                    final RemoteServiceRegistration reg = new RemoteServiceRegistration(reference, service);
                    if (log != null) {
                        log.log(LogService.LOG_INFO, // $NON-NLS-1$
                        "REGISTERING " + reference + // $NON-NLS-1$
                        " AS PROXIED SERVICES");
                    }
                    synchronized (serviceRegistrations) {
                        serviceRegistrations.put(service, reg);
                    }
                    registerWithServiceDiscovery(reg);
                    final LeaseUpdateMessage lu = new LeaseUpdateMessage();
                    lu.setType(LeaseUpdateMessage.SERVICE_ADDED);
                    lu.setServiceID(String.valueOf(reg.getServiceID()));
                    lu.setPayload(new Object[] { reg.getInterfaceNames(), reg.getProperties() });
                    updateLeases(lu);
                    return service;
                } catch (final ClassNotFoundException e) {
                    e.printStackTrace();
                    throw new RemoteOSGiException("Cannot find class " + service, // $NON-NLS-1$
                    e);
                }
            }

            public void modifiedService(final ServiceReference reference, final Object service) {
                if (reference.getProperty(R_OSGi_REGISTRATION) == null) {
                    removedService(reference, service);
                    return;
                }
                final RemoteServiceRegistration reg = (RemoteServiceRegistration) serviceRegistrations.get(reference);
                registerWithServiceDiscovery(reg);
                final LeaseUpdateMessage lu = new LeaseUpdateMessage();
                lu.setType(LeaseUpdateMessage.SERVICE_MODIFIED);
                lu.setServiceID(String.valueOf(reg.getServiceID()));
                lu.setPayload(new Object[] { null, reg.getProperties() });
                updateLeases(lu);
            }

            public void removedService(final ServiceReference reference, final Object service) {
                final ServiceReference sref = Arrays.asList((String[]) reference.getProperty(Constants.OBJECTCLASS)).contains(SurrogateRegistration.class.getName()) ? (ServiceReference) reference.getProperty(SurrogateRegistration.SERVICE_REFERENCE) : reference;
                final RemoteServiceRegistration reg = (RemoteServiceRegistration) serviceRegistrations.remove(sref);
                unregisterFromServiceDiscovery(reg);
                final LeaseUpdateMessage lu = new LeaseUpdateMessage();
                lu.setType(LeaseUpdateMessage.SERVICE_REMOVED);
                lu.setServiceID(String.valueOf(reg.getServiceID()));
                lu.setPayload(new Object[] { null, null });
                updateLeases(lu);
            }
        });
        remoteServiceTracker.open(true);
        networkChannelFactoryTracker = new ServiceTracker(context, context.createFilter(// $NON-NLS-1$ //$NON-NLS-2$
        "(" + Constants.OBJECTCLASS + "=" + NetworkChannelFactory.class.getName() + ")"), new // $NON-NLS-1$
        ServiceTrackerCustomizer() {

            public Object addingService(final ServiceReference reference) {
                final NetworkChannelFactory factory = (NetworkChannelFactory) context.getService(reference);
                try {
                    factory.activate(RemoteOSGiServiceImpl.this);
                } catch (final IOException ioe) {
                    if (log != null) {
                        log.log(LogService.LOG_ERROR, ioe.getMessage(), ioe);
                    }
                }
                return factory;
            }

            public void modifiedService(final ServiceReference reference, final Object factory) {
            }

            public void removedService(final ServiceReference reference, final Object factory) {
            }
        });
        networkChannelFactoryTracker.open();
    } catch (final InvalidSyntaxException ise) {
        ise.printStackTrace();
    }
}