public synchronized void start() throws Exception { if (started) { return; } ClassLoader tccl = AccessController.doPrivileged( new PrivilegedAction<ClassLoader>() { public ClassLoader run() { return Thread.currentThread().getContextClassLoader(); } }); // The remoting service maintains it's own thread pool for handling remoting traffic // If OIO each connection will have it's own thread // If NIO these are capped at nio-remoting-threads which defaults to num cores * 3 // This needs to be a different thread pool to the main thread pool especially for OIO where we // may need // to support many hundreds of connections, but the main thread pool must be kept small for // better performance ThreadFactory tFactory = new HornetQThreadFactory( "HornetQ-remoting-threads-" + server.toString() + "-" + System.identityHashCode(this), false, tccl); threadPool = Executors.newCachedThreadPool(tFactory); ClassLoader loader = Thread.currentThread().getContextClassLoader(); for (TransportConfiguration info : acceptorsConfig) { try { Class<?> clazz = loader.loadClass(info.getFactoryClassName()); AcceptorFactory factory = (AcceptorFactory) clazz.newInstance(); // Check valid properties if (info.getParams() != null) { Set<String> invalid = ConfigurationHelper.checkKeys( factory.getAllowableProperties(), info.getParams().keySet()); if (!invalid.isEmpty()) { HornetQServerLogger.LOGGER.invalidAcceptorKeys( ConfigurationHelper.stringSetToCommaListString(invalid)); continue; } } String protocol = ConfigurationHelper.getStringProperty( TransportConstants.PROTOCOL_PROP_NAME, TransportConstants.DEFAULT_PROTOCOL, info.getParams()); ProtocolManager manager = protocolMap.get(protocol); if (manager == null) { throw HornetQMessageBundle.BUNDLE.noProtocolManagerFound(protocol); } ClusterConnection clusterConnection = lookupClusterConnection(info); Acceptor acceptor = factory.createAcceptor( clusterConnection, info.getParams(), new DelegatingBufferHandler(), manager, this, threadPool, scheduledThreadPool, manager); if (defaultInvmSecurityPrincipal != null && acceptor.isUnsecurable()) { acceptor.setDefaultHornetQPrincipal(defaultInvmSecurityPrincipal); } acceptors.add(acceptor); if (managementService != null) { acceptor.setNotificationService(managementService); managementService.registerAcceptor(acceptor, info); } } catch (Exception e) { HornetQServerLogger.LOGGER.errorCreatingAcceptor(e, info.getFactoryClassName()); } } for (Acceptor a : acceptors) { a.start(); } // This thread checks connections that need to be closed, and also flushes confirmations failureCheckAndFlushThread = new FailureCheckAndFlushThread(RemotingServiceImpl.CONNECTION_TTL_CHECK_INTERVAL); failureCheckAndFlushThread.start(); started = true; }