Include Spring Data REST endpoints in /mappings

[wilkinsona]

No description provided.

[htynkn]

I check the related code and I find the reason why spring data rest endpoint didn't included in mappings is RepositoryRestHandlerMapping is not exported as a bean. If it export as a bean, RequestMappingEndpoint can get all the information by extractMethodMappings method.

The only instance of RepositoryRestHandlerMapping is created byRepositoryRestMvcConfiguration, but this file is out of spring-boot. It's a part of spring-data-rest-webmvc.

If we can ask them to export RepositoryRestHandlerMapping as a bean, it will be easy for us. Or we can treat Spring Data REST endpoints as an exceptional case and add some code of it in RequestMappingEndpoint.

Do you have any advice? @wilkinsona

[wilkinsona]

Spring Data REST already exposes its handler mapping as a bean, but it's a DelegatingHandlerMapper rather than one of the types the the Actuator can already introspect. RepositoryRestHandlerMapper is one of the delegates so I don't think it can be exposed as a bean as, if it was, some of the mappings would be exposed twice.

We either need to use reflection to look inside DelegatingHandlerMapping or we need an official API for accessing its delegates.

[wilkinsona]

I've opened DATAREST-1136 to hopefully get an official API for accessing the delegates.

[wilkinsona]

As of #9979, mappings from Spring Data REST are now available.