public void doStart()

in bundle/src/main/java/org/apache/karaf/cellar/bundle/internal/osgi/Activator.java [62:125]
58 lines of code
6 McCabe index (conditional complexity)

    public void doStart() throws Exception {

        ClusterManager clusterManager = getTrackedService(ClusterManager.class);
        if (clusterManager == null)
            return;
        GroupManager groupManager = getTrackedService(GroupManager.class);
        if (groupManager == null)
            return;
        ConfigurationAdmin configurationAdmin = getTrackedService(ConfigurationAdmin.class);
        if (configurationAdmin == null)
            return;
        EventProducer eventProducer = getTrackedService(EventProducer.class);
        if (eventProducer == null)
            return;
        FeaturesService featuresService = getTrackedService(FeaturesService.class);
        if (featuresService == null)
            return;

        LOGGER.debug("CELLAR BUNDLE: init even handler");
        eventHandler = new BundleEventHandler();
        eventHandler.setConfigurationAdmin(configurationAdmin);
        eventHandler.setClusterManager(clusterManager);
        eventHandler.setGroupManager(groupManager);
        eventHandler.setBundleContext(bundleContext);
        eventHandler.setFeaturesService(featuresService);
        eventHandler.init();
        Hashtable props = new Hashtable();
        props.put("managed", "true");
        register(EventHandler.class, eventHandler, props);

        LOGGER.debug("CELLAR BUNDLE: init local listener");
        localBundleListener = new LocalBundleListener();
        localBundleListener.setClusterManager(clusterManager);
        localBundleListener.setGroupManager(groupManager);
        localBundleListener.setConfigurationAdmin(configurationAdmin);
        localBundleListener.setEventProducer(eventProducer);
        localBundleListener.setFeaturesService(featuresService);
        localBundleListener.setBundleContext(bundleContext);
        localBundleListener.init();

        LOGGER.debug("CELLAR BUNDLE: init synchronizer");
        synchronizer = new BundleSynchronizer();
        synchronizer.setConfigurationAdmin(configurationAdmin);
        synchronizer.setGroupManager(groupManager);
        synchronizer.setClusterManager(clusterManager);
        synchronizer.setBundleContext(bundleContext);
        synchronizer.setEventProducer(eventProducer);
        synchronizer.init(bundleContext);
        props = new Hashtable();
        props.put("resource", "bundle");
        register(Synchronizer.class, synchronizer, props);

        LOGGER.debug("CELLAR BUNDLE: register MBean");
        CellarBundleMBeanImpl mbean = new CellarBundleMBeanImpl();
        mbean.setClusterManager(clusterManager);
        mbean.setConfigurationAdmin(configurationAdmin);
        mbean.setGroupManager(groupManager);
        mbean.setEventProducer(eventProducer);
        mbean.setBundleContext(bundleContext);
        props = new Hashtable();
        props.put("jmx.objectname", "org.apache.karaf.cellar:type=bundle,name=" + System.getProperty("karaf.name"));
        mbeanRegistration = bundleContext.registerService(getInterfaceNames(mbean), mbean, props);

    }