Implements OpenApiEndpointSource and SwaggerEndpointSource which …

[logi]

…generate the list of endpoints found in the API spec parsed by OpenApiHelper and SwaggerHelper respectively.

This depends on networknt/light-4j#282 and the build can be expected to fail until that is merged.

the change allows this sort of configuration:

- source: com.networknt.openapi.OpenApiEndpointSource
  exec:
  - my-openapi-chain

It logs the resolution at startup like so (from my eval project):

folder for validator.yml
12:54:08.311 [main] is.thing.usernotes-1.0.0  INFO  c.n.openapi.OpenApiEndpointSource listEndpoints - Generating paths from OpenApi spec
12:54:08.312 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/users@get
12:54:08.312 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/users@post
12:54:08.312 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/users/{userId}@get
12:54:08.312 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/users/{userId}@put
12:54:08.312 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/users/{userId}@delete
12:54:08.312 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes@get
12:54:08.313 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes@post
12:54:08.313 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes/{noteId}@get
12:54:08.313 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes/{noteId}@put
12:54:08.313 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes/{noteId}@delete
12:54:08.313 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes/{noteId}/sections@get
12:54:08.313 [main] is.thing.usernotes-1.0.0  DEBUG c.n.openapi.OpenApiEndpointSource listEndpoints - /usernotes/v1/notes/{noteId}/sections/{sectionId}@get

[logi]

Localy I have a magical Handler implementation which directs those endpoints to the appropriate methods of UsersResource and NotesResource (with various options for resolution) which closes the spec-to-implementation gap but that's a separate change and nowhere near ready.

[stevehu]

@logi Thanks a lot for your help.