如何使用Spring DSL使骆驼主线程保持活动状态

Question

I am developing my first real Camel-based Java app and am running into a bizarre, complicated issue that I believe is a result of the main Camel thread dying/finishing.

Basically, the route itself consists of just a few processors, and one of the processors does some heavy computations that take 20 - 25 seconds to finish. The app as a whole is terminating without throwing any exceptions/errors/log statements are any other indication that something went wrong, and is dying while doing these expensive computations.

I'm not looking for anybody to diagnose my problem, I just want a way to force the Camel route to stay alive, because what I believe is happening is that the main Camel thread is reaching the end of the route, stopping it, and shutting down the application. I'd like to force the main Camel thread to stay alive for, say, 60 seconds, to see if I can at least rule it out as a factor.

If using the Java DSL, I'd just throw the following on to the end of my route:

.to(new Processor() {
    @Override
    public void process(Exchange exchange) {
        try {
            Thread.sleep(60000);
        } catch(Throwable t) {
            // ...
        }
    }
})
.to("direct:endOfRoute");

I'm using Spring DSL (XML) - any ideas? Thanks in advance!

Answer 1

a route finishing will not terminate your Camel application/context, you just need to make sure that the container that instantiates the context keeps running...

see http://camel.apache.org/running-camel-standalone-and-have-it-keep-running.html

that said, to your specific question, you can use the the delayer EIP to introduce an explicit delay in your route