[jira] [Created] (CAMEL-9567) Consumer does not suspend (on context) stop

["Zdeněk Obst (JIRA)" <ji...@apache.org>]

Zdeněk Obst created CAMEL-9567:
----------------------------------

             Summary: Consumer does not suspend (on context) stop
                 Key: CAMEL-9567
                 URL: https://issues.apache.org/jira/browse/CAMEL-9567
             Project: Camel
          Issue Type: Bug
          Components: camel-sjms
    Affects Versions: 2.16.2
            Reporter: Zdeněk Obst


When using SjmsConsumer that consumes JMS messages from broker (e.g. ActiveMQ) and *stop Camel Context, the consumer still reads new messages from broker* even if it should only finish processing of already fetched messages. It causes that Context is never stopped if there are still new and new messages in the broker (or before timeout for stop operation occurs).

When I investigated code, it seems that suspend operation is not implemented (or code does not check isSuspended flag). What I would expect is that consumer unregisters listener on context stop (consumer suspend).

Here is the sample code I used for testing:
{code:java}
public class Test {

    public static void main(String[] args) throws Exception {
        RouteBuilder rb = new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("sjms:queue:test?consumerCount=5")
                        .process(new Processor() {
                            @Override
                            public void process(Exchange exchange) throws Exception {
                                Thread.sleep(1000); // not to consume all messages instantly
                                System.out.println("Processed message " + exchange.getExchangeId());
                            }
                        });
            }
        };

        CamelContext context = new DefaultCamelContext();
        context.getShutdownStrategy().setTimeout(2); // 2 seconds is enough for already fetched messages
        addJmsComponent(context);
        context.addRoutes(rb);

        System.out.println("=====> Starting context");
        context.start();
        Thread.sleep(5 * 1000); // Consume few messages at the beginning

        System.out.println("=====> Stopping context");
        context.stop();
        System.out.println("=====> Context stopped"); // Will not get here as long as there are any messages left in the queue
    }

    private static void addJmsComponent(CamelContext context) {
        ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        ConnectionFactoryResource connResource = new ConnectionFactoryResource(5, factory);
        SjmsComponent comp = new SjmsComponent();
        comp.setConnectionResource(connResource);
        context.addComponent("sjms", comp);
    }
}
{code}

The original mailing list thread:
http://camel.465427.n5.nabble.com/CamelContext-stop-with-SJMS-consumer-does-not-stop-consuming-messages-from-broker-td5777207.html



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