protected Object doExecute()

in bundle/src/main/java/org/apache/karaf/cellar/bundle/shell/InstallBundleCommand.java [62:144]
69 lines of code
10 McCabe index (conditional complexity)

    protected Object doExecute() throws Exception {
        // check if the group exists
        Group group = groupManager.findGroupByName(groupName);
        if (group == null) {
            System.err.println("Cluster group " + groupName + " doesn't exist");
            return null;
        }

        // check if the producer is ON
        if (eventProducer.getSwitch().getStatus().equals(SwitchStatus.OFF)) {
            System.err.println("Cluster event producer is OFF");
            return null;
        }

        CellarSupport support = new CellarSupport();
        support.setClusterManager(this.clusterManager);
        support.setGroupManager(this.groupManager);
        support.setConfigurationAdmin(this.configurationAdmin);

        for (String url : urls) {
            // check if the bundle is allowed
            if (support.isAllowed(group, Constants.CATEGORY, url, EventType.OUTBOUND)) {

                // get the name and version in the location MANIFEST
                JarInputStream jarInputStream = new JarInputStream(new URL(url).openStream());
                Manifest manifest = jarInputStream.getManifest();
                if (manifest == null) {
                    System.err.println("Bundle location " + url + " doesn't seem correct");
                    continue;
                }
                String name = manifest.getMainAttributes().getValue("Bundle-Name");
                String symbolicName = manifest.getMainAttributes().getValue("Bundle-SymbolicName");
                if (name == null) {
                    name = symbolicName;
                }
                if (name == null) {
                    name = url;
                }
                String version = manifest.getMainAttributes().getValue("Bundle-Version");
                jarInputStream.close();

                ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
                Thread.currentThread().setContextClassLoader(getClass().getClassLoader());

                try {
                    // update the cluster group
                    Map<String, BundleState> clusterBundles = clusterManager.getMap(Constants.BUNDLE_MAP + Configurations.SEPARATOR + groupName);
                    BundleState state = new BundleState();
                    state.setName(name);
                    state.setSymbolicName(symbolicName);
                    state.setVersion(version);
                    state.setStartLevel(level);
                    state.setId(clusterBundles.size());
                    state.setLocation(url);
                    if (start) {
                        state.setStatus(Bundle.ACTIVE);
                    } else {
                        state.setStatus(Bundle.INSTALLED);
                    }
                    clusterBundles.put(symbolicName + "/" + version, state);
                } finally {
                    Thread.currentThread().setContextClassLoader(originalClassLoader);
                }

                // broadcast the cluster event
                ClusterBundleEvent event;
                if (start) {
                    event = new ClusterBundleEvent(symbolicName, version, url, level, Bundle.ACTIVE);
                    event.setSourceGroup(group);
                    event.setSourceNode(clusterManager.getNode());
                } else {
                    event = new ClusterBundleEvent(symbolicName, version, url, level, Bundle.INSTALLED);
                    event.setSourceGroup(group);
                    event.setSourceNode(clusterManager.getNode());
                }
                eventProducer.produce(event);
            } else {
                System.err.println("Bundle location " + url + " is blocked outbound for cluster group " + groupName);
            }
        }

        return null;
    }