Java消息系統 BBMS

fmms 12年前發布 | 31K 次閱讀消息消息系統

BBMS(Bus Based Message Service)是一個采用Java開發的消息系統。BBMS應用程序能夠異步發送消息到其它任意客戶端發送并接收客戶端的消息。BBMS提供了易于使用的API，并擁有高性能和靈活性。它類似于JMS(Java Message Service) 但現在還不支持pub/sub模式。當前只支持P2P。

        public static void main(String[] args) throws RemoteException{
                /*
                 * create a notifiable entry, declare that it's care of
                 * TIMEOUT, CLOSE, and READY event.
                 */
                Configuration config = new RMIServerConfiguration(null, 0);
                CommonNotifiableEntry entry1 = 
                        new CommonNotifiableEntry(config, "client1", 
                                MessageTypes.MESSAGE_TIMEOUT | 
                                MessageTypes.MESSAGE_CLOSE | 
                                MessageTypes.MESSAGE_READY);

                /*
                 * create another notifiable entry, declare that it's care of
                 * OPEN, CLOSE, and TIMEOUT event.
                 */
                CommonNotifiableEntry entry2 = 
                        new CommonNotifiableEntry(config, "client2", 
                                MessageTypes.MESSAGE_OPEN | 
                                MessageTypes.MESSAGE_CLOSE | 
                                MessageTypes.MESSAGE_TIMEOUT);

                // register them to the remote Message BUS to listener events
                entry1.register();
                entry2.register();

                // new a message, of type MESSAGE_OPEN.
                Message msg = new CommonMessage(
                                entry1.getId(),
                                entry2.getId(),
                                MessageTypes.MESSAGE_OPEN,
                                "busying now");

                // deliver it to entry2, which is from entry1
                entry1.post(msg);

                // create a message, of type MESSAGE_CLICKED, the entry2
                // does not handle this type, it'll not be deliver to entry2
                Message msgCannotBeReceived = new CommonMessage(
                                entry1.getId(),
                                entry2.getId(),
                                MessageTypes.MESSAGE_CLICKED,
                                "cliked evnet");
                entry1.post(msgCannotBeReceived);

                try {
                        Thread.sleep(2000);
                } catch (InterruptedException e) {
                        e.printStackTrace();
                }

                // re use the message object to send another message entry
                msg.setSource(entry2.getId());
                msg.setTarget(entry1.getId());
                msg.setType(MessageTypes.MESSAGE_READY);
                msg.setBody("okay now");
                entry2.post(msg);

                // unregister self when all works are done or 
                // don't want to listen any more
                entry1.unregister();
                entry2.unregister();
        }

系統結構：

Java消息系統 BBMS