Apache Camel LRA example (SpringBoot)

This is a basic example for using LRA in Apache Camel.

It can also be used as evidence of broken functionality in the camel-lra module from v3.7.3 onwards (v3.7.2 was the latest working version).

How to run

• Build the application and start is as a typical SpringBoot application.

• Have Narayana transacation manager running (to this example, it is assumed that it operates on localhost:5000)

• Make a POST request towards http://localhost:8080/api/saga in order to start the saga.

The services will randomly fail, thus triggering the compensation actions.

What is expected

No exception occurs

In the application logs, expect the following entries:

g.w.camel.services.ServiceOne            : Operation performed from ServiceOne: ServiceOne~...
g.w.camel.services.ServiceTwo            : Operation performed from ServiceTwo: ServiceTwo~...
saga-completion-route                    : Saga Completed

As a response, one should expect the String "Completed"

An exception occurs

In the application logs, expect the following entries:

g.w.camel.services.ServiceOne            : Operation performed from ServiceOne: ServiceOne~...
o.a.c.p.e.DefaultErrorHandler            : Failed delivery for (MessageId: ...
... 
java.lang.RuntimeException: ServiceTwo operation failed
...  
saga-compensation-route                  : Saga Compensated
service-one-cancel                       : Canceling one
g.w.camel.services.ServiceOne            : Operation Canceled from ServiceOne: http://localhost:50000/lra-coordinator/...  
service-two-cancel                       : Canceling two
g.w.camel.services.ServiceTwo            : Operation Canceled from ServiceTwo: http://localhost:50000/lra-coordinator/...

As a response, one should expect the exception

Where is the issue

Using Apache Camel v3.7.2 (SpringBoot v2.4.2), everything works as expected.
Using Apache Camel v3.14.1 (SpringBoot v2.6.3), no calls to either completion or compensation are made.