Processor App in Spring Boot 2.2.4/Hoxton.SR1 not working in Spring Cloud Data Flow 2.4.1

Question

I am trying to develop a new application to work on SCDF 2.4.1 and Skipper 2.3.1

I took the samples from https://github.com/sabbyanandan/stream-programming-models

Answer 1

I believe the problem is that the current published stream apps, http and log, use an earlier version of spring-cloud-stream, based on spring boot 2.1.x. The newer version of spring-cloud-stream that is compatible with boot 2.2.x is not backwards compatible. All apps in the stream must be on the same (or compatible) spring-cloud-stream versions. I expect if you look at the log for custom processor, you will see some conversion error.