Apache Camel is a powerful tool for data routing, very convenient to use. However, at the same time, there is a problem: because it’s overly well-encapsulated, hiding many technical details, troubleshooting can be difficult when issues arise. Fortunately, the official team provides a debug tool that can help us set breakpoints and debug normally. http://camel.apache.org/debugger.html. This article will supplement the official documentation.

First, you need to import the camel-test package:

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<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-test</artifactId>
    <version>2.16.2</version>
</dependency>

Then create a new class and implement CamelTestSupport.

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public class CamelDebugger extends CamelTestSupport {

CamelTestSupport has many methods, and you can choose some to implement as needed. Here are some of the more important ones:

  1. createCamelContext() - This method allows you to define your own camelContext for testing.

  2. createRouteBuilder() - This method uses the default camelContext but adds your own route.

  3. debugBefore and debugAfter - These two methods are executed before and after a message is processed respectively, with parameters including exchange, processor, and other necessary information. During actual debugging, this is where you write logs or set breakpoints.

For specific example code, see: https://github.com/lcy362/CamelDemo/blob/7aef2cc7661236499896022f6976c160b73b68e7/src/main/java/com/mallow/demo/camel/debugger/CamelDebugger.java

Source: https://lichuanyang.top/en/posts/1120/