[CAMEL-20357] camel-core - throttle EIP doesn't work as expected when it's in a loopDoWhile

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.3.0
• Fix Version/s: 4.4.0
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Rhuan Rocha
• Reporter: Papa John
• Created: 23/Jan/24 03:16
• Updated: 14/Mar/24 12:52
• Resolved: 14/Mar/24 12:52

Description

I just upgraded my project to Apache Camel 4.3.0, and my code stop to work as expected.

It seems there was some changes to the `throttle EIP` – it's now throttling based on the number of concurrent exchanges.

My route uses a `loopDoWhile` to loop an exchange over and over, so in a sense, the concurrent exchange should always be zero (and the inflight exchange is actually zero).

However, my loop will stop when it reached the max number of concurrent exchanges I set for the thottler.

For example, in the following code, the loop will stop at 10th iteration. It seems the new changes didn't put loop DSL into consideration...

import org.apache.camel.builder.RouteBuilder;public class Test extends RouteBuilder {    @Override
    public void configure() throws Exception {        // Write your routes here, for example:
        from("timer:java?delay=1000&repeatCount=1")
            .loopDoWhile(constant(true)).breakOnShutdown()
                .throttle(10)
                .setBody()
                    .simple("Hello Camel from ${routeId}")
                .log("${body}");
    }
} 

Issue Links

• is related to: CAMEL-20355 Throttle EIP: milliseconds not available anymore