public void start() throws Exception {
log.info("Starting Gravity...");
synchronized (this) {
if (!started) {
adapterFactory = new AdapterFactory(this);
internalStart();
serverChannel = new ServerChannel(this, ServerChannel.class.getName(), null, null);
if (gravityConfig.isUseUdp()) {
ServiceLoader<UdpReceiverFactory> loader = ServiceLoader.load(UdpReceiverFactory.class);
Iterator<UdpReceiverFactory> factories = loader.iterator();
if (factories.hasNext()) {
udpReceiverFactory = factories.next();
udpReceiverFactory.setPort(gravityConfig.getUdpPort());
udpReceiverFactory.setNio(gravityConfig.isUdpNio());
udpReceiverFactory.setConnected(gravityConfig.isUdpConnected());
udpReceiverFactory.setSendBufferSize(gravityConfig.getUdpSendBufferSize());
udpReceiverFactory.start();
} else log.warn("UDP receiver factory not found");
}
started = true;
}
}
log.info("Gravity successfully started.");
}
/*
* (non-Javadoc)
* @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
if (log.isInfoEnabled())
try {
GraniteContext context =
HttpGraniteContext.createThreadIntance(
graniteConfig, servicesConfig, getServletContext(), request, response);
if (context == null) throw new ServletException("GraniteContext not Initialized!!");
// AMFContextImpl amf = (AMFContextImpl) context.getAMFContext();
// Phase1 Deserializing AMF0 request
if (log.isInfoEnabled())
log.info(">>>>> Deserializing AMF0 request from..." + request.getRequestURI());
AMF0Deserializer deserializer =
new AMF0Deserializer(new DataInputStream(request.getInputStream()));
AMF0Message amf0Request = deserializer.getAMFMessage();
// Phase2 Processing AMF0 request
if (log.isInfoEnabled()) log.info(">>>>> Processing AMF0 request: " + amf0Request);
AMF0Message amf0Response = AMF0MessageProcessor.process(amf0Request);
if (log.isInfoEnabled()) log.info("<<<<< Returning AMF0 response: " + amf0Response);
// Phase3 Send back response to the client
response.setContentType(AMF0Message.CONTENT_TYPE);
AMF0Serializer serializer =
new AMF0Serializer(new DataOutputStream(response.getOutputStream()));
serializer.serializeMessage(amf0Response);
if (log.isInfoEnabled()) log.info("...End of Processing AMF Request......");
} catch (Exception e) {
log.error(e, "Could not handle AMF request");
throw new ServletException(e);
}
}
private Message handleSecurityMessage(CommandMessage message) {
GraniteConfig config = GraniteContext.getCurrentInstance().getGraniteConfig();
Message response = null;
if (!config.hasSecurityService())
log.warn(
"Ignored security operation (no security settings in granite-config.xml): %s", message);
else if (!config.getSecurityService().acceptsContext())
log.info(
"Ignored security operation (security service does not handle this kind of granite context)",
message);
else {
SecurityService securityService = config.getSecurityService();
try {
if (message.isLoginOperation())
securityService.login(
message.getBody(), (String) message.getHeader(Message.CREDENTIALS_CHARSET_HEADER));
else securityService.logout();
} catch (Exception e) {
if (e instanceof SecurityServiceException)
log.debug(e, "Could not process security operation: %s", message);
else log.error(e, "Could not process security operation: %s", message);
response = new ErrorMessage(message, e, true);
}
}
if (response == null) {
response = new AcknowledgeMessage(message, true);
// For SDK 2.0.1_Hotfix2.
if (message.isSecurityOperation()) response.setBody("success");
}
return response;
}
public void receive(AsyncMessage message) throws MessageReceivingException {
if (message == null) throw new NullPointerException("message cannot be null");
GravityInternal gravity = getGravity();
if (udpReceiver != null) {
if (udpReceiver.isClosed()) return;
try {
udpReceiver.receive(message);
} catch (MessageReceivingException e) {
if (e.getCause() instanceof SocketException) {
log.debug(e, "Closing unreachable UDP channel %s", getId());
udpReceiver.close(false);
} else log.error(e, "Cannot access UDP channel %s", getId());
}
return;
}
receivedQueueLock.lock();
try {
if (receivedQueue.size() + 1 > gravity.getGravityConfig().getMaxMessagesQueuedPerChannel())
throw new MessageReceivingException(
message, "Could not queue message (channel's queue is full) for channel: " + this);
log.debug(
"Channel %s queue message %s for client %s",
getId(), message.getMessageId(), message.getClientId());
receivedQueue.add(message);
} finally {
receivedQueueLock.unlock();
}
if (hasAsyncHttpContext()) receiver.queue(gravity);
}
public Object authorize(AbstractSecurityContext context) throws Exception {
log.debug("Authorize: %s", context);
log.debug(
"Is %s secured? %b",
context.getDestination().getId(), context.getDestination().isSecured());
startAuthorization(context);
HttpGraniteContext graniteContext = (HttpGraniteContext) GraniteContext.getCurrentInstance();
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
SecurityContext securityContextBefore = null;
int securityContextHashBefore = 0;
if (graniteContext.getRequest().getAttribute(FILTER_APPLIED) == null) {
securityContextBefore = loadSecurityContextFromSession();
if (securityContextBefore == null) securityContextBefore = SecurityContextHolder.getContext();
else securityContextHashBefore = securityContextBefore.hashCode();
SecurityContextHolder.setContext(securityContextBefore);
authentication = securityContextBefore.getAuthentication();
}
if (context.getDestination().isSecured()) {
if (!isAuthenticated(authentication)
|| authentication instanceof AnonymousAuthenticationToken) {
log.debug("Is not authenticated!");
throw SecurityServiceException.newNotLoggedInException("User not logged in");
}
if (!userCanAccessService(context, authentication)) {
log.debug("Access denied for: %s", authentication.getName());
throw SecurityServiceException.newAccessDeniedException("User not in required role");
}
}
try {
Object returnedObject =
securityInterceptor != null
? securityInterceptor.invoke(context)
: endAuthorization(context);
return returnedObject;
} catch (AccessDeniedException e) {
throw SecurityServiceException.newAccessDeniedException(e.getMessage());
} catch (InvocationTargetException e) {
handleAuthorizationExceptions(e);
throw e;
} finally {
if (graniteContext.getRequest().getAttribute(FILTER_APPLIED) == null) {
// Do this only when not already filtered by Spring Security
SecurityContext securityContextAfter = SecurityContextHolder.getContext();
SecurityContextHolder.clearContext();
saveSecurityContextInSession(securityContextAfter, securityContextHashBefore);
}
}
}
protected boolean userCanAccessService(
AbstractSecurityContext context, Authentication authentication) {
log.debug("Is authenticated as: %s", authentication.getName());
for (String role : context.getDestination().getRoles()) {
if (isUserInRole(authentication, role)) {
log.debug("Allowed access to %s in role %s", authentication.getName(), role);
return true;
}
log.debug("Access denied for %s not in role %s", authentication.getName(), role);
}
return false;
}
@Validate
public void start() {
log.debug("Start OSGiServiceSimple: " + toString());
if (servicesConfig.findServiceById(id) == null) {
// Clear destinations
destinations.clear();
servicesConfig.addService(this);
started = true;
} else {
log.error("Service \"" + id + "\" already registered");
}
}
protected void createUdpReceiver(UdpReceiverFactory factory, AsyncHttpContext asyncHttpContext) {
OutputStream os = null;
try {
Message connectMessage = asyncHttpContext.getConnectMessage();
if (udpReceiver == null || udpReceiver.isClosed())
udpReceiver = factory.newReceiver(this, asyncHttpContext.getRequest(), connectMessage);
AsyncMessage reply = udpReceiver.acknowledge(connectMessage);
HttpServletRequest request = asyncHttpContext.getRequest();
HttpServletResponse response = asyncHttpContext.getResponse();
GraniteContext context =
HttpGraniteContext.createThreadIntance(
gravity.getGraniteConfig(), gravity.getServicesConfig(), null, request, response);
((AMFContextImpl) context.getAMFContext())
.setCurrentAmf3Message(asyncHttpContext.getConnectMessage());
GravityServletUtil.serialize(
gravity,
response,
new AsyncMessage[] {reply},
ContentType.forMimeType(request.getContentType()));
} catch (ServletException e) {
log.error(e, "Could not send UDP connect acknowledgement to channel: %s", this);
} catch (IOException e) {
log.error(e, "Could not send UDP connect acknowledgement to channel: %s", this);
} finally {
try {
GraniteContext.release();
} catch (Exception e) {
// should never happen...
}
// Close output stream.
try {
if (os != null) {
try {
os.close();
} catch (IOException e) {
log.warn(e, "Could not close output stream (ignored)");
}
}
} finally {
releaseAsyncHttpContext(asyncHttpContext);
}
}
}
/**
* @author Cameron INGRAM
* @author Venkat DANDA
*/
public class SeamServiceInvoker extends ServiceInvoker<SeamServiceFactory> {
private static final long serialVersionUID = 1L;
private static final Logger log = Logger.getLogger(SeamServiceInvoker.class);
public static final String CAPITALIZED_DESTINATION_ID = "{capitalized.destination.id}";
public static final String DESTINATION_ID = "{destination.id}";
public SeamServiceInvoker(Destination destination, SeamServiceFactory factory, Object instance)
throws ServiceException {
super(destination, factory);
this.invokee = instance;
}
@Override
protected void beforeInvocation(ServiceInvocationContext context) {
log.debug("Before Invocation");
}
@Override
protected Object afterInvocation(ServiceInvocationContext context, Object result) {
log.debug("After Invocation");
return result;
}
}
public Principal login(Object credentials, String charset) {
List<String> decodedCredentials = Arrays.asList(decodeBase64Credentials(credentials, charset));
HttpGraniteContext context = (HttpGraniteContext) GraniteContext.getCurrentInstance();
HttpServletRequest httpRequest = context.getRequest();
String user = decodedCredentials.get(0);
String password = decodedCredentials.get(1);
Authentication auth = new UsernamePasswordAuthenticationToken(user, password);
Principal principal = null;
ApplicationContext ctx =
WebApplicationContextUtils.getWebApplicationContext(
httpRequest.getSession().getServletContext());
if (ctx != null) {
AbstractAuthenticationManager authenticationManager =
BeanFactoryUtils.beanOfTypeIncludingAncestors(ctx, AbstractAuthenticationManager.class);
try {
Authentication authentication = authenticationManager.authenticate(auth);
SecurityContext securityContext = SecurityContextHolder.getContext();
securityContext.setAuthentication(authentication);
principal = authentication;
SecurityContextHolder.setContext(securityContext);
saveSecurityContextInSession(securityContext, 0);
endLogin(credentials, charset);
} catch (AuthenticationException e) {
handleAuthenticationExceptions(e);
}
}
log.debug("User %s logged in", user);
return principal;
}
@Invalidate
public void stop() {
log.debug("Stop OSGiServiceSimple: " + toString());
if (servicesConfig != null) {
servicesConfig.removeService(id);
started = false;
}
}
public boolean handleMarkerItem(ScannedItem item) {
try {
return handleProperties(item.loadAsProperties());
} catch (Exception e) {
log.error(e, "Could not load properties: %s", item);
}
return true;
}
public Channel removeChannel(String channelId, boolean timeout) {
if (channelId == null) return null;
// Remove existing channel id/subscriptions in distributed data (clustering).
try {
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null) {
log.debug("Removing channel id from distributed data: %s", channelId);
gdd.removeChannelId(channelId);
}
} catch (Exception e) {
log.error(e, "Could not remove channel id from distributed data: %s", channelId);
}
TimeChannel<?> timeChannel = channels.get(channelId);
Channel channel = null;
if (timeChannel != null) {
try {
if (timeChannel.getTimerTask() != null) timeChannel.getTimerTask().cancel();
} catch (Exception e) {
// Should never happen...
}
channel = timeChannel.getChannel();
try {
for (Subscription subscription : channel.getSubscriptions()) {
try {
Message message = subscription.getUnsubscribeMessage();
handleMessage(channel.getFactory(), message, true);
} catch (Exception e) {
log.error(
e,
"Error while unsubscribing channel: %s from subscription: %s",
channel,
subscription);
}
}
} finally {
channels.remove(channelId);
channel.destroy(timeout);
}
}
return channel;
}
public void init(FilterConfig config) throws ServletException {
String dumpDirString = ServletParams.get(config, DUMP_DIR, String.class, null);
if (dumpDirString != null) {
File dumpDir = new File(dumpDirString);
if (!dumpDir.exists() || !dumpDir.isDirectory() || !dumpDir.canWrite())
log.warn("Ignoring dump directory (is it a writable directory?): %s", dumpDir);
else this.dumpDir = dumpDir;
}
}
private boolean handleProperties(Properties properties) {
if (properties.getProperty("dependsOn") != null) {
String dependsOn = properties.getProperty("dependsOn");
try {
TypeUtil.forName(dependsOn);
} catch (ClassNotFoundException e) {
// Class not found, skip scan for this package
return true;
}
}
String classGetterName = properties.getProperty("classGetter");
if (!classGetterSet && classGetterName != null) {
try {
classGetter = TypeUtil.newInstance(classGetterName, ClassGetter.class);
} catch (Throwable t) {
log.error(t, "Could not create instance of: %s", classGetterName);
}
}
String amf3MessageInterceptorName = properties.getProperty("amf3MessageInterceptor");
if (amf3MessageInterceptor == null && amf3MessageInterceptorName != null) {
try {
amf3MessageInterceptor =
TypeUtil.newInstance(amf3MessageInterceptorName, AMF3MessageInterceptor.class);
} catch (Throwable t) {
log.error(t, "Could not create instance of: %s", amf3MessageInterceptorName);
}
}
for (Map.Entry<?, ?> me : properties.entrySet()) {
if (me.getKey().toString().startsWith("converter.")) {
String converterName = me.getValue().toString();
try {
converterClasses.add(TypeUtil.forName(converterName, Converter.class));
} catch (Exception e) {
throw new GraniteConfigException(
"Could not get converter class for: " + converterName, e);
}
}
}
return false;
}
private void dumpBytes(String label, byte[] bytes) {
StringBuilder hexSb = new StringBuilder();
StringBuilder charSb = new StringBuilder();
for (int i = 0; i < bytes.length; i++) {
int b = bytes[i] & 0xFF;
if (hexSb.length() > 0) {
hexSb.append(' ');
charSb.append(' ');
}
hexSb.append(HEXS.charAt(b >> 4)).append(HEXS.charAt(b & 0x0F));
if (b >= 0x20 && b <= 0x7e) charSb.append(' ').append((char) b);
else charSb.append("##");
}
log.info("[RAW %s] {\n%s\n%s\n}", label.toUpperCase(), hexSb.toString(), charSb.toString());
if (dumpDir != null) {
File file =
new File(
dumpDir.getPath()
+ File.separator
+ label
+ "_"
+ System.currentTimeMillis()
+ ".amf");
for (int i = 1; i < 100 && file.exists(); i++)
file = new File(file.getAbsolutePath() + "." + i);
OutputStream os = null;
try {
os = new FileOutputStream(file);
os.write(bytes);
} catch (Exception e) {
log.error(e, "Could not write dump file: %s", file);
} finally {
if (os != null)
try {
os.close();
} catch (Exception e) {
}
}
}
}
protected List<ExtendedObjectCodec> detectExtendedObjectCodecs() {
log.info("Auto detecting extended object codec...");
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
for (String factoryName : CODEC_EXTENSION_FACTORY_NAMES) {
try {
CodecExtensionFactory factory =
(CodecExtensionFactory) classLoader.loadClass(factoryName).newInstance();
List<ExtendedObjectCodec> extendedObjectCodecs = factory.getCodecs();
log.info("Using %s: %s", factoryName, extendedObjectCodecs);
return extendedObjectCodecs;
} catch (Throwable t) {
log.debug(t, "Could not load factory: %s", factoryName);
}
}
log.info("No extended object codec detected");
return Collections.emptyList();
}
public void contextInitialized(ServletContextEvent event) {
log.info("Loading JMF shared context");
ServletContext servletContext = event.getServletContext();
List<ExtendedObjectCodec> extendedObjectCodecs = loadExtendedObjectCodecs(servletContext);
List<String> defaultStoredStrings = loadDefaultStoredStrings(servletContext);
SharedContext sharedContext =
new DefaultSharedContext(
new DefaultCodecRegistry(extendedObjectCodecs), null, defaultStoredStrings);
servletContext.setAttribute(SHARED_CONTEXT_KEY, sharedContext);
SharedContext dumpSharedContext =
new DefaultSharedContext(new DefaultCodecRegistry(), null, defaultStoredStrings);
servletContext.setAttribute(DUMP_SHARED_CONTEXT_KEY, dumpSharedContext);
log.info("JMF shared context loaded");
}
/* (non-Javadoc)
* @see org.granite.tide.ejb.EJBServiceContextIntf#postCall(org.granite.messaging.service.ServiceInvocationContext, java.lang.Object, java.lang.String)
*/
@Override
public IInvocationResult postCall(
ServiceInvocationContext context,
Object result,
String componentName,
Class<?> componentClass) {
try {
AbstractContext threadContext = AbstractContext.instance();
List<ContextUpdate> results = new ArrayList<ContextUpdate>(threadContext.size());
DataContext dataContext = DataContext.get();
Set<Object[]> dataUpdates = dataContext != null ? dataContext.getDataUpdates() : null;
Object[][] updates = null;
if (dataUpdates != null && !dataUpdates.isEmpty())
updates = dataUpdates.toArray(new Object[dataUpdates.size()][]);
for (Map.Entry<String, Object> entry : threadContext.entrySet())
results.add(new ContextUpdate(entry.getKey(), null, entry.getValue(), 3, false));
InvocationResult ires = new InvocationResult(result, results);
if (context.getBean() != null) {
if (context.getBean().getClass().isAnnotationPresent(BypassTideMerge.class))
ires.setMerge(false);
else {
try {
Method m =
context
.getBean()
.getClass()
.getMethod(
context.getMethod().getName(), context.getMethod().getParameterTypes());
if (m.isAnnotationPresent(BypassTideMerge.class)) ires.setMerge(false);
} catch (Exception e) {
log.warn("Could not find bean method", e);
}
}
}
ires.setUpdates(updates);
ires.setEvents(new ArrayList<ContextEvent>(threadContext.getRemoteEvents()));
if (componentName != null) {
EjbComponent component = ejbLookupCache.get(componentName);
if (component != null
&& component.ejbMetadata != null
&& component.ejbMetadata.isStateful()
&& component.ejbMetadata.isRemoveMethod(context.getMethod()))
ejbLookupCache.remove(componentName);
}
return ires;
} finally {
AbstractContext.remove();
}
}
public void encode(ExtendedObjectOutput out, Object v)
throws IOException, IllegalAccessException, InvocationTargetException {
String detachedState = null;
if (v instanceof HibernateProxy) {
HibernateProxy proxy = (HibernateProxy) v;
// Only write initialized flag, detachedState & id if v is an uninitialized proxy.
if (proxy.getHibernateLazyInitializer().isUninitialized()) {
Class<?> persistentClass = proxy.getHibernateLazyInitializer().getPersistentClass();
if (!serializableProxyAdapters.containsKey(persistentClass)) {
try {
SerializableProxyAdapter proxyAdapter = new SerializableProxyAdapter(proxy);
serializableProxyAdapters.putIfAbsent(persistentClass, proxyAdapter);
} catch (Exception e) {
throw new IOException("Could not create SerializableProxyAdapter for: " + proxy);
}
}
Serializable id = proxy.getHibernateLazyInitializer().getIdentifier();
log.debug("Writing uninitialized HibernateProxy %s with id %s", detachedState, id);
out.writeBoolean(false);
out.writeUTF(null);
out.writeObject(id);
return;
}
// Proxy is initialized, get the underlying persistent object.
log.debug("Writing initialized HibernateProxy...");
v = proxy.getHibernateLazyInitializer().getImplementation();
}
// Write initialized flag & detachedState.
out.writeBoolean(true);
out.writeUTF(null);
// Write all properties in lexical order.
List<Property> properties = out.getReflection().findSerializableProperties(v.getClass());
for (Property property : properties) out.getAndWriteProperty(v, property);
}
protected void internalStart() {
gravityPool = new GravityPool(gravityConfig);
channelsTimer = new Timer();
if (graniteConfig.isRegisterMBeans()) {
try {
ObjectName name =
new ObjectName(
"org.graniteds:type=Gravity,context=" + graniteConfig.getMBeanContextName());
log.info("Registering MBean: %s", name);
OpenMBean mBean = OpenMBean.createMBean(this);
MBeanServerLocator.getInstance().register(mBean, name, true);
} catch (Exception e) {
log.error(
e,
"Could not register Gravity MBean for context: %s",
graniteConfig.getMBeanContextName());
}
}
}
private void scanConfig(String graniteConfigProperties) {
// if config overriding exists
Scanner scanner =
ScannerFactory.createScanner(
this,
graniteConfigProperties != null ? graniteConfigProperties : GRANITE_CONFIG_PROPERTIES);
try {
scanner.scan();
} catch (Exception e) {
log.error(e, "Could not scan classpath for configuration");
}
}
private Message handleUnsubscribeMessage(
final ChannelFactory<?> channelFactory, CommandMessage message) {
Channel channel = getChannel(channelFactory, (String) message.getClientId());
if (channel == null) return handleUnknownClientMessage(message);
AsyncMessage reply = null;
ServiceAdapter adapter = adapterFactory.getServiceAdapter(message);
reply = (AcknowledgeMessage) adapter.manage(channel, message);
postManage(channel);
if (!(reply instanceof ErrorMessage)) {
// Remove subscription message in distributed data (clustering).
try {
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null) {
String subscriptionId =
(String) message.getHeader(AsyncMessage.DESTINATION_CLIENT_ID_HEADER);
log.debug(
"Removing subscription message from channel info: %s - %s",
channel.getId(), subscriptionId);
gdd.removeSubcription(channel.getId(), subscriptionId);
}
} catch (Exception e) {
log.error(
e,
"Could not remove subscription from distributed data: %s - %s",
channel.getId(),
message.getHeader(AsyncMessage.DESTINATION_CLIENT_ID_HEADER));
}
}
reply.setDestination(message.getDestination());
reply.setClientId(channel.getId());
reply.getHeaders().putAll(message.getHeaders());
return reply;
}
private void handleClass(Class<?> clazz) {
if (clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) return;
if (Externalizer.class.isAssignableFrom(clazz)) {
try {
scannedExternalizers.add(TypeUtil.newInstance(clazz, Externalizer.class));
} catch (Exception e) {
log.error(e, "Could not create new instance of: %s", clazz);
}
}
if (ExceptionConverter.class.isAssignableFrom(clazz)) {
try {
exceptionConverters.add(TypeUtil.newInstance(clazz, ExceptionConverter.class));
} catch (Exception e) {
if (!clazz
.getName()
.equals("org.granite.tide.hibernate.HibernateValidatorExceptionConverter")) // GDS-582
log.error(e, "Could not create new instance of: %s", clazz);
}
}
}
public void stop(boolean now) throws Exception {
log.info("Stopping Gravity (now=%s)...", now);
synchronized (this) {
if (adapterFactory != null) {
try {
adapterFactory.stopAll();
} catch (Exception e) {
log.error(e, "Error while stopping adapter factory");
}
adapterFactory = null;
}
if (serverChannel != null) {
try {
removeChannel(serverChannel.getId(), false);
} catch (Exception e) {
log.error(e, "Error while removing server channel: %s", serverChannel);
}
serverChannel = null;
}
if (channelsTimer != null) {
try {
channelsTimer.cancel();
} catch (Exception e) {
log.error(e, "Error while cancelling channels timer");
}
channelsTimer = null;
}
if (gravityPool != null) {
try {
if (now) gravityPool.shutdownNow();
else gravityPool.shutdown();
} catch (Exception e) {
log.error(e, "Error while stopping thread pool");
}
gravityPool = null;
}
if (udpReceiverFactory != null) {
try {
udpReceiverFactory.stop();
} catch (Exception e) {
log.error(e, "Error while stopping udp receiver factory");
}
udpReceiverFactory = null;
}
started = false;
}
log.info("Gravity sucessfully stopped.");
}
@Override
public Set<Class<?>> scan(Set<String> packageNames) {
Set<Class<?>> classes = new HashSet<Class<?>>();
Scanner scanner =
ScannerFactory.createScanner(new MessagingScannedItemHandler(packageNames, classes), null);
try {
scanner.scan();
} catch (Exception e) {
log.error(e, "Could not scan classpath for @RemoteAlias");
}
return classes;
}
public void handleScannedItem(ScannedItem item) {
if ("class".equals(item.getExtension()) && item.getName().indexOf('$') == -1) {
try {
handleClass(item.loadAsClass());
} catch (NoClassDefFoundError e) {
// Ignore errors with Tide classes depending on Gravity
} catch (LinkageError e) {
// Ignore errors with GraniteDS/Hibernate classes depending on Hibernate 3 when using
// Hibernate 4
} catch (Throwable t) {
log.error(t, "Could not load class: %s", item);
}
}
}
public void registerExceptionConverter(
Class<? extends ExceptionConverter> exceptionConverterClass, boolean first) {
for (ExceptionConverter ec : exceptionConverters) {
if (ec.getClass() == exceptionConverterClass) return;
}
try {
ExceptionConverter exceptionConverter =
TypeUtil.newInstance(exceptionConverterClass, ExceptionConverter.class);
if (first) exceptionConverters.add(0, exceptionConverter);
else exceptionConverters.add(exceptionConverter);
} catch (Exception e) {
log.error(e, "Could not instantiate exception converter: %s", exceptionConverterClass);
}
}
public boolean access(String channelId) {
if (channelId != null) {
TimeChannel<?> timeChannel = channels.get(channelId);
if (timeChannel != null) {
synchronized (timeChannel) {
TimerTask timerTask = timeChannel.getTimerTask();
if (timerTask != null) {
log.debug("Canceling TimerTask: %s", timerTask);
timerTask.cancel();
timeChannel.setTimerTask(null);
}
timerTask = new ChannelTimerTask(this, channelId);
timeChannel.setTimerTask(timerTask);
long timeout = gravityConfig.getChannelIdleTimeoutMillis();
log.debug("Scheduling TimerTask: %s for %s ms.", timerTask, timeout);
channelsTimer.schedule(timerTask, timeout);
return true;
}
}
}
return false;
}
@SuppressWarnings("unchecked")
public <C extends Channel> C getChannel(ChannelFactory<C> channelFactory, String clientId) {
if (clientId == null) return null;
TimeChannel<C> timeChannel = (TimeChannel<C>) channels.get(clientId);
if (timeChannel == null) {
// Look for existing channel id/subscriptions in distributed data (clustering).
log.debug("Lookup channel %s in distributed data", clientId);
try {
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null && gdd.hasChannelId(clientId)) {
log.debug("Found channel id in distributed data: %s", clientId);
String channelFactoryClassName = gdd.getChannelFactoryClassName(clientId);
String clientType = gdd.getChannelClientType(clientId);
channelFactory =
(ChannelFactory<C>)
TypeUtil.newInstance(
channelFactoryClassName, new Class<?>[] {Gravity.class}, new Object[] {this});
C channel = channelFactory.newChannel(clientId, clientType);
timeChannel = new TimeChannel<C>(channel);
if (channels.putIfAbsent(clientId, timeChannel) == null) {
for (CommandMessage subscription : gdd.getSubscriptions(clientId)) {
log.debug("Resubscribing channel: %s - %s", clientId, subscription);
handleSubscribeMessage(channelFactory, subscription, false);
}
access(clientId);
}
}
} catch (Exception e) {
log.error(
e, "Could not recreate channel/subscriptions from distributed data: %s", clientId);
}
}
return (timeChannel != null ? timeChannel.getChannel() : null);
}
