public synchronized void updated()

in services/src/main/java/org/jclouds/karaf/services/internal/ComputeServiceFactory.java [89:201]
93 lines of code
29 McCabe index (conditional complexity)

    public synchronized void updated(String pid, Dictionary properties) throws ConfigurationException {
        ServiceRegistration newRegistration = null;
        try {
            if (properties != null) {
                Properties props = new Properties();
                for (Enumeration e = properties.keys(); e.hasMoreElements(); ) {
                    Object key = e.nextElement();
                    Object val = properties.get(key);
                    props.put(key, val);
                }

                String provider = (String) properties.get(Constants.PROVIDER);
                String api = (String) properties.get(Constants.API);

                ProviderMetadata providerMetadata = null;
                ApiMetadata apiMetadata = null;

                if (!Strings.isNullOrEmpty(provider) && installedProviders.containsKey(provider)) {
                    providerMetadata = installedProviders.get(provider);
                    validate(providerMetadata, properties);
                } else if (!Strings.isNullOrEmpty(api) && installedApis.containsKey(api)) {
                    apiMetadata = installedApis.get(api);
                    validate(apiMetadata, properties);
                } else {
                    if (!Strings.isNullOrEmpty(provider)) {
                        providerPids.put(provider, pid);
                    }
                    if (!Strings.isNullOrEmpty(api)) {
                        apiPids.put(api, pid);
                    }
                    pendingPids.put(pid, properties);
                    LOGGER.warn("Provider {} or Api {} is not currently installed. Service will resume once the the provider is installed.", provider, api);
                    return;
                }

                //We are removing credentials as we don't want them to be visible in the service registration.
                String id = (String) properties.get(Constants.NAME);
                String identity = (String) properties.remove(Constants.IDENTITY);
                String credential = (String) properties.remove(Constants.CREDENTIAL);
                String endpoint = (String) properties.get(Constants.ENDPOINT);
                String storeType = (String) properties.get(CREDENTIAL_STORE);
                String eventSupport = (String) properties.get(NODE_EVENT_SUPPORT);
                Boolean enableEventSupport = false;

                if (Strings.isNullOrEmpty(credential) && providerMetadata != null && !providerMetadata.getApiMetadata().getDefaultCredential().isPresent()) {
                    LOGGER.warn("No credential specified and provider {}.", providerMetadata.getId());
                    return;
                }
                if (Strings.isNullOrEmpty(credential) && apiMetadata != null && !apiMetadata.getDefaultCredential().isPresent()) {
                    LOGGER.warn("No credential specified and api {}.", apiMetadata.getId());
                    return;
                }

                if (storeType == null || storeType.isEmpty()) {
                    storeType = DEFAULT_CREDENTIAL_STORE_TYPE;
                }

                if (eventSupport != null && !eventSupport.isEmpty()) {
                    enableEventSupport = Boolean.parseBoolean(eventSupport);
                }

                CredentialStore credentialStore = lookupStore(storeType);

                ContextBuilder builder = null;
                if (providerMetadata != null) {
                    builder = ContextBuilder.newBuilder(providerMetadata);
                } else if (apiMetadata != null) {
                    builder = ContextBuilder.newBuilder(apiMetadata);
                }

                if (!Strings.isNullOrEmpty(endpoint)) {
                    builder = builder.endpoint(endpoint);
                }

                builder = builder.name(id).modules(ImmutableSet.<Module>of(new Log4JLoggingModule(), new JschSshClientModule()));

                if (credentialStore != null) {
                    builder = builder.modules(ImmutableSet.<Module>of(credentialStore));
                }

                builder = builder.name(id).credentials(identity, credential).overrides(props);

                ComputeServiceContext context = builder.build(ComputeServiceContext.class);

                ComputeService service = null;

                if (enableEventSupport) {
                    service = new ComputeServiceEventProxy(bundleContext, context.getComputeService());
                } else {
                    service = context.getComputeService();
                }

                newRegistration = bundleContext.registerService(
                        ComputeService.class.getName(), service, properties);

                //If all goes well remove the pending pid.
                if (pendingPids.containsKey(pid)) {
                    activePids.put(pid, pendingPids.remove(pid));
                }
            }
        } catch (InvalidConfigurationException ex) {
            LOGGER.warn("Invalid configuration: {}", ex.getMessage());
        } catch (Exception ex) {
            LOGGER.error("Error creating compute service.", ex);
        } finally {
            ServiceRegistration oldRegistration = (newRegistration == null)
                    ? registrations.remove(pid)
                    : registrations.put(pid, newRegistration);
            if (oldRegistration != null) {
                oldRegistration.unregister();
            }
        }
    }