activemq - javax.jms.IllegalStateException: AMQ219019: 会话已关闭

Question

我有两个 ActiveMQ Artemis 代理运行在不同的机器上构建一个简单的集群。我正在使用 Java 应用程序（非常基本）来生成和使用消息来分析集群的行为。 Java代码如下：

public void runExample() throws Exception {
    InitialContext initialContext = null;
    Connection connectionA = null;

    try {
        Properties properties = new Properties();
        properties.put("java.naming.factory.initial", "org.apache.activemq.artemis.jndi.ActiveMQInitialContextFactory");
        properties.put("connectionFactory.ConnectionFactory", "udp://231.7.7.7:9876");
        properties.put("queue.queue/anotherExampleQueue", "anotherExampleQueue"); 

        initialContext = new InitialContext(properties);
        Queue queue = (Queue) initialContext.lookup("queue/anotherExampleQueue");
        ConnectionFactory connectionFactory = (ConnectionFactory) initialContext.lookup("ConnectionFactory");

        Thread.sleep(5000);
        connectionA = connectionFactory.createConnection("admin", "admin");
        
        Session sessionA = connectionA.createSession(false, Session.AUTO_ACKNOWLEDGE);
        
        System.out.println("Session A - " + ((ClientSessionInternal)((org.apache.activemq.artemis.jms.client.ActiveMQSession) sessionA).getCoreSession()).getConnection().getRemoteAddress());
        
        MessageProducer producerA = sessionA.createProducer(queue);
        
        final int numMessages = 10;

        for (int i = 0; i < numMessages; i++) {
            TextMessage messageA = sessionA.createTextMessage("A:This is text message " + i);
            producerA.send(messageA);
            System.out.println("Sent message: " + messageA.getText());
        }

        connectionA.start();
        consume(sessionA, queue, numMessages, "A");
        
    } finally {
        if (connectionA != null) {
            connectionA.close();
        }
        if (initialContext != null) {
            initialContext.close();
        }
    }
}

private static void consume(Session session, Queue queue, int numMessages, String node) throws JMSException {
    MessageConsumer consumer = session.createConsumer(queue);

    for (int i = 0; i < numMessages; i++) {
        TextMessage message = (TextMessage) consumer.receive(2000);
        
        if(message!=null)
            System.out.println("Got message: " + message.getText() + " from node " + node);
    }

    System.out.println("receive other message from node " + node + ": " + consumer.receive(2000));
}

在 connectionA.start() 处使用断点调试上述应用程序时。如果我停止我的主代理然后我看到从代理接管并且所有消息都按预期移动到从代理。但是，此时，如果我继续我的应用程序，那么它会抛出 javax.jms.IllegalStateException: AMQ219019: Session is closed 而不是在从属代理处使用消息。当我再次启动我的主代理并继续调试时，同样的事情发生了。 documentation 表示自动客户端故障转移会自动发生。

这是大师的片段broker.xml

<connectors>
   <connector name="clusterConnectorOne">tcp://10.10.170.5:61616</connector>
</connectors>

<discovery-groups>
   <discovery-group name="my-discovery-group">
      <local-bind-address>10.10.170.5</local-bind-address>
      <group-address>231.7.7.7</group-address>
      <group-port>9876</group-port>
      <refresh-timeout>10000</refresh-timeout>
   </discovery-group>
</discovery-groups>

<cluster-connections>
   <cluster-connection name="my-cluster">
      <connector-ref>clusterConnectorOne</connector-ref>
      <retry-interval>500</retry-interval>
      <use-duplicate-detection>true</use-duplicate-detection>
      <message-load-balancing>STRICT</message-load-balancing>
      <max-hops>1</max-hops>
      <discovery-group-ref discovery-group-name="my-discovery-group"/>
   </cluster-connection>
</cluster-connections>
      
<broadcast-groups>
   <broadcast-group name="my-broadcast-group">
      <local-bind-address>10.10.170.5</local-bind-address>
      <local-bind-port>5432</local-bind-port>
      <group-address>231.7.7.7</group-address>
      <group-port>9876</group-port>
      <broadcast-period>2000</broadcast-period>
      <connector-ref>clusterConnectorOne</connector-ref>
   </broadcast-group>
</broadcast-groups>

<ha-policy>
   <replication>
      <master>
        <check-for-live-server>true</check-for-live-server>
      </master>
   </replication>
</ha-policy>

我不知道这里出了什么问题，有什么建议吗？

Answer 1

由于您的连接工厂正在使用 udp://231.7.7.7:9876 它正在“发现”它最终需要使用的连接器。在您的情况下，连接器 tcp://10.10.170.5:61616 由您的代理广播，因此客户端将发现并使用它。但是，此连接器未针对 HA 配置。我需要像 tcp://10.10.170.5:61616?ha=true;reconnectAttempts=-1 这样的东西，以便在连接丢失时告诉客户端故障转移到备份。在 broker.xml 中更新您的连接器配置，故障转移应该可以正常工作。代理附带的许多高可用性示例都演示了此设置，例如transaction-failover.

activemq - javax.jms.IllegalStateException: AMQ219019: 会话已关闭

activemq - javax.jms.IllegalStateException: AMQ219019: Session is closed

java

activemq-artemis