public void doStart()

in features/src/main/java/org/apache/karaf/cellar/features/internal/osgi/Activator.java [66:137]
65 lines of code
6 McCabe index (conditional complexity)

    public void doStart() throws Exception {

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

        LOGGER.debug("CELLAR FEATURE: init repository event handler");
        repositoryEventHandler = new RepositoryEventHandler();
        repositoryEventHandler.setConfigurationAdmin(configurationAdmin);
        repositoryEventHandler.setFeaturesService(featuresService);
        repositoryEventHandler.setClusterManager(clusterManager);
        repositoryEventHandler.setGroupManager(groupManager);
        repositoryEventHandler.init(bundleContext);
        Hashtable props = new Hashtable();
        props.put("managed", "true");
        register(new Class[]{ EventHandler.class }, repositoryEventHandler, props);

        LOGGER.debug("CELLAR FEATURE: init features event handler");
        featuresEventHandler = new FeaturesEventHandler();
        featuresEventHandler.setFeaturesService(featuresService);
        featuresEventHandler.setClusterManager(clusterManager);
        featuresEventHandler.setGroupManager(groupManager);
        featuresEventHandler.setConfigurationAdmin(configurationAdmin);
        featuresEventHandler.init(bundleContext);
        register(new Class[]{ EventHandler.class }, featuresEventHandler, props);

        LOGGER.debug("CELLAR FEATURE: init local features listener");
        localFeaturesListener = new LocalFeaturesListener();
        localFeaturesListener.setClusterManager(clusterManager);
        localFeaturesListener.setGroupManager(groupManager);
        localFeaturesListener.setEventProducer(eventProducer);
        localFeaturesListener.setConfigurationAdmin(configurationAdmin);
        localFeaturesListener.setFeaturesService(featuresService);
        localFeaturesListener.init(bundleContext);
        register(FeaturesListener.class, localFeaturesListener);

        LOGGER.debug("CELLAR FEATURE: init features synchronizer");
        featuresSynchronizer = new FeaturesSynchronizer();
        featuresSynchronizer.setClusterManager(clusterManager);
        featuresSynchronizer.setGroupManager(groupManager);
        featuresSynchronizer.setEventProducer(eventProducer);
        featuresSynchronizer.setConfigurationAdmin(configurationAdmin);
        featuresSynchronizer.setFeaturesService(featuresService);
        featuresSynchronizer.init(bundleContext);
        props = new Hashtable();
        props.put("resource", "feature");
        register(Synchronizer.class, featuresSynchronizer, props);

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

    }