import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
public class ClusterNodeActivator implements BundleActivator {
private ServiceRegistration<?> registration;
public void start(BundleContext bundleContext) {
ClusterManager clusterManager = new ClusterManagerImpl();
registration = bundleContext.registerService(ClusterManager.class.getName(), clusterManager, null);
}
public void stop(BundleContext bundleContext) {
registration.unregister();
}
}
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.util.tracker.ServiceTracker;
public class Client {
private ServiceTracker<ClusterManager, ClusterManager> tracker;
public Client(BundleContext bundleContext) {
tracker = new ServiceTracker<>(bundleContext, ClusterManager.class, null);
tracker.open();
}
public void makeRequest() {
ClusterManager clusterManager = tracker.getService();
if (clusterManager != null) {
NodeInfo node = clusterManager.selectNode();
node.sendRequest();
}
}
public void destroy() {
tracker.close();
}
}
public class NodeMonitorImpl implements NodeMonitor {
public void nodeFailed(NodeInfo node) {
}
public void nodeRecovered(NodeInfo node) {
}
}
