Spring Modulith - Where Are Failed Publications Saved?

[har95337]

Hello,

I am using modulith and Spring Application Events in my project and some listeners are going to be calling a flaky API. Since we expect some publications to fail, we wanted to take advantage of republishing failed events. However, in documentation, I don’t see WHERE failed events are persisted.

“IncompleteEventPublications — This interface allows accessing all incomplete event publications to resubmit either the ones matching a given predicate or older than a given Duration relative to the original publishing date.
Event Publication Completion
Event publications are marked as completed when a transactional or @ApplicationModuleListener execution completes successfully. By default, the completion is registered by …”

This comes from https://docs.spring.io/spring-modulith/reference/events.html

I believe this is missing information from the doc.

[NjengaFelix]

If you publish an event and it fails to store in the data source, it is because, your lacking to consume / listen the published event.

To test this kindly, create an @ApplicationModuleListener that perhaps even that just logs out a message, the published event shall be saved in the data source

[martynem]

Here are the SQL scripts you can use to initialize your own database schema:
https://docs.spring.io/spring-modulith/reference/appendix.html#schemas.postgresql