我正在使用嵌入式ActiveMQ代理。 我的目标是找到一种方法来检测队列上的外部生产者何时失去连接。如何在生产者连接中断时得到通知?
我开始经纪人是这样的:
BrokerService broker = new BrokerService();
broker.addConnector("tcp://" + LISTEN_DEVICE_IP + ":" + port);
setLastMessagesPersistent(broker);
broker.start();
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("vm://localhost");
connection = factory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
connection.start();
此后,我尝试添加TransportListener:
((ActiveMQConnection) connection).addTransportListener(new TransportListener() {
public void transportResumed() {
System.out.println("resumed");
}
public void transportInterupted() {
System.out.println("interrupted");
}
public void onException(IOException arg0) {
System.out.println("ioexception: " + arg0);
}
public void onCommand(Object arg0) {
System.out.println("command: " + arg0);
}
});
我也注册一个消费者和ProducerListener这样的:
Destination dest = session.createQueue(queuename);
MessageConsumer consumer = session.createConsumer(dest);
ProducerEventSource source = new ProducerEventSource(connection, dest);
System.out.println("Setting Producer Listener");
source.setProducerListener(prodevent -> {
System.out.println("producer status: " + prodevent.isStarted());
});
// Gets called from inside the broker's Thread and somehow causes deadlocks if I don't invoke this from the outside
new Thread(() -> {
try {
consumer.setMessageListener(new NetworkEventPlayerAdapter(objectMapper, event, gameEventManager, playerID));
} catch (Exception e) {
e.printStackTrace();
}
}).start();
不幸的是,TransportListener和ProducerListener都不能给我一个y当我强制退出先前作为制作人添加的另一个应用程序时(Alt + F4),输出y。该经纪人肯定会注意到:
WARN | Transport Connection to: tcp://127.0.0.1:58988 failed: java.net.SocketException: Connection reset
WARN | Transport Connection to: tcp://127.0.0.1:58986 failed: java.net.SocketException: Connection reset
但我没有找到一种方法来获取这些Java事件的回调。 我也尝试在代理中设置自定义IOExceptionHandler
,并在连接中添加ExceptionListener
。他们也从未被召唤过。
谢谢,这解决了我。听取具有“RemoveInfo”类型数据结构的咨询事件正是我所需要的。 – Felk