2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.sal.binding.api;
10 import java.util.concurrent.ExecutorService;
11 import java.util.concurrent.Executors;
13 import org.osgi.framework.BundleActivator;
14 import org.osgi.framework.BundleContext;
15 import org.osgi.framework.ServiceReference;
16 import org.osgi.util.tracker.ServiceTracker;
17 import org.osgi.util.tracker.ServiceTrackerCustomizer;
19 public abstract class AbstractBrokerAwareActivator implements BundleActivator {
21 private static final ExecutorService mdActivationPool = Executors.newCachedThreadPool();
22 private BundleContext context;
23 private ServiceTracker<BindingAwareBroker, BindingAwareBroker> tracker;
24 private BindingAwareBroker broker;
25 private ServiceTrackerCustomizer<BindingAwareBroker, BindingAwareBroker> customizer = new ServiceTrackerCustomizer<BindingAwareBroker, BindingAwareBroker>() {
28 public BindingAwareBroker addingService(ServiceReference<BindingAwareBroker> reference) {
29 broker = context.getService(reference);
30 mdActivationPool.execute(new Runnable() {
34 onBrokerAvailable(broker, context);;
41 public void modifiedService(ServiceReference<BindingAwareBroker> reference, BindingAwareBroker service) {
42 // TODO Auto-generated method stub
47 public void removedService(ServiceReference<BindingAwareBroker> reference, BindingAwareBroker service) {
48 // TODO Auto-generated method stub
56 public final void start(BundleContext context) throws Exception {
57 this.context = context;
59 tracker = new ServiceTracker<>(context, BindingAwareBroker.class, customizer);
67 public final void stop(BundleContext context) throws Exception {
74 * Called when this bundle is started (before
75 * {@link #onSessionInitiated(ProviderContext)} so the Framework can perform
76 * the bundle-specific activities necessary to start this bundle. This
77 * method can be used to register services or to allocate any resources that
81 * This method must complete and return to its caller in a timely manner.
84 * The execution context of the bundle being started.
86 * If this method throws an exception, this bundle is marked as
87 * stopped and the Framework will remove this bundle's
88 * listeners, unregister all services registered by this bundle,
89 * and release all services used by this bundle.
91 protected void startImpl(BundleContext context) {
96 * Called when this bundle is stopped so the Framework can perform the
97 * bundle-specific activities necessary to stop the bundle. In general, this
98 * method should undo the work that the {@code BundleActivator.start} method
99 * started. There should be no active threads that were started by this
100 * bundle when this bundle returns. A stopped bundle must not call any
104 * This method must complete and return to its caller in a timely manner.
106 * @param context The execution context of the bundle being stopped.
107 * @throws Exception If this method throws an exception, the bundle is still
108 * marked as stopped, and the Framework will remove the bundle's
109 * listeners, unregister all services registered by the bundle, and
110 * release all services used by the bundle.
112 protected void stopImpl(BundleContext context) {
117 protected abstract void onBrokerAvailable(BindingAwareBroker broker, BundleContext context);
119 protected void onBrokerRemoved(BindingAwareBroker broker, BundleContext context) {