+package org.opendaylight.controller.sal.binding.api;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
+import org.osgi.util.tracker.ServiceTracker;
+import org.osgi.util.tracker.ServiceTrackerCustomizer;
+
+public abstract class AbstractBrokerAwareActivator implements BundleActivator {
+
+ private static final ExecutorService mdActivationPool = Executors.newCachedThreadPool();
+ private BundleContext context;
+ private ServiceTracker<BindingAwareBroker, BindingAwareBroker> tracker;
+ private BindingAwareBroker broker;
+ private ServiceTrackerCustomizer<BindingAwareBroker, BindingAwareBroker> customizer = new ServiceTrackerCustomizer<BindingAwareBroker, BindingAwareBroker>() {
+
+ @Override
+ public BindingAwareBroker addingService(ServiceReference<BindingAwareBroker> reference) {
+ broker = context.getService(reference);
+ mdActivationPool.execute(new Runnable() {
+
+ @Override
+ public void run() {
+ onBrokerAvailable(broker, context);;
+ }
+ });
+ return broker;
+ }
+
+ @Override
+ public void modifiedService(ServiceReference<BindingAwareBroker> reference, BindingAwareBroker service) {
+ // TODO Auto-generated method stub
+
+ }
+
+ @Override
+ public void removedService(ServiceReference<BindingAwareBroker> reference, BindingAwareBroker service) {
+ // TODO Auto-generated method stub
+
+ }
+
+ };
+
+
+ @Override
+ public final void start(BundleContext context) throws Exception {
+ this.context = context;
+ startImpl(context);
+ tracker = new ServiceTracker<>(context, BindingAwareBroker.class, customizer);
+ tracker.open();
+
+ }
+
+
+
+ @Override
+ public final void stop(BundleContext context) throws Exception {
+ tracker.close();
+ stopImpl(context);
+ }
+
+
+ /**
+ * Called when this bundle is started (before
+ * {@link #onSessionInitiated(ProviderContext)} so the Framework can perform
+ * the bundle-specific activities necessary to start this bundle. This
+ * method can be used to register services or to allocate any resources that
+ * this bundle needs.
+ *
+ * <p>
+ * This method must complete and return to its caller in a timely manner.
+ *
+ * @param context
+ * The execution context of the bundle being started.
+ * @throws Exception
+ * If this method throws an exception, this bundle is marked as
+ * stopped and the Framework will remove this bundle's
+ * listeners, unregister all services registered by this bundle,
+ * and release all services used by this bundle.
+ */
+ protected void startImpl(BundleContext context) {
+ // NOOP
+ }
+
+ /**
+ * Called when this bundle is stopped so the Framework can perform the
+ * bundle-specific activities necessary to stop the bundle. In general, this
+ * method should undo the work that the {@code BundleActivator.start} method
+ * started. There should be no active threads that were started by this
+ * bundle when this bundle returns. A stopped bundle must not call any
+ * Framework objects.
+ *
+ * <p>
+ * This method must complete and return to its caller in a timely manner.
+ *
+ * @param context The execution context of the bundle being stopped.
+ * @throws Exception If this method throws an exception, the bundle is still
+ * marked as stopped, and the Framework will remove the bundle's
+ * listeners, unregister all services registered by the bundle, and
+ * release all services used by the bundle.
+ */
+ protected void stopImpl(BundleContext context) {
+ // NOOP
+ }
+
+
+ protected abstract void onBrokerAvailable(BindingAwareBroker broker, BundleContext context);
+
+ protected void onBrokerRemoved(BindingAwareBroker broker, BundleContext context) {
+
+ }
+}
Code Review / controller.git / commitdiff