Functional DSL incorrect path mapping

[Sam-Kruglov]

Describe the bug
When I try to do deep nesting (deeper than 1 level), the path mappings "go wild".

To Reproduce
Steps to reproduce the behavior:

• What version of spring-boot you are using?
  2.4.0
• What modules and versions of springdoc-openapi are you using?
  1.5.0 of webflux-ui, kotlin, and security
• Provide with a sample code (HelloController) or Test that reproduces the problem

class Handler{
  suspend fun getUsers(request: ServerRequest) = ServerResponse.ok().buildAndAwait()
  suspend fun getUserGroups(request: ServerRequest) = ServerResponse.ok().buildAndAwait()
}

@Bean
fun routeDocs(): RouterFunction<ServerResponse> = Handler().let{ handler ->
  RouterFunctions.nest(
    path("/users"),
    SpringdocRouteBuilder.route()
        .GET("", asHandlerFunction(handler::getUsers), {it.operationId("get-users")})
        .POST("/special", asHandlerFunction(handler::getUsers), {it.operationId("create-user-special")})
        .nest(
            path("/groups"),
            Supplier {
              SpringdocRouteBuilder.route()
                  .GET("", asHandlerFunction(handler::getUserGroups), {it.operationId("get-user-groups")})
                  .POST("/special", asHandlerFunction(handler::getUserGroups), {it.operationId("create-user-group-special")})
                  .build()
            },
            {}
        ).build()
)}

• What is the actual and the expected result using OpenAPI Description (yml or json)?
  actual:

paths:
  /users:
    get:
      operationId: get-users_1
      responses: {}
  /users/groups:
    post:
      operationId: create-user-special
      responses: {}
  /users/special:
    post:
      operationId: create-user-group-special
      responses: {}

expected:

paths:
  /users:
    get:
      operationId: get-users #DIFF
      responses: {}
  /users/special: #DIFF
    post:
      operationId: create-user-special
      responses: {}
  /users/groups: #DIFF
    get: #DIFF
      operationId: get-user-groups #DIFF
      responses: {} #DIFF
  /users/groups/special: #DIFF
    post:
      operationId: create-user-group-special
      responses: {}

Expected behavior

• A clear and concise description of what you expected to happen.
  The paths are way off as you can see, also, operation id gets changed for some reason.
• What is the expected result using OpenAPI Description (yml or json)?
  above

Additional context
Add any other context about the problem here.
I also tried to call these requests and WebFlux resolves all paths correctly, so the error is only displayed in the open API, the requests work fine.

[bnasslahsen]

@Sam-Kruglov,

This is now fixed. You can test it using the last SNAPSHOT.

[indanit]

@Sam-Kruglov How did you make it work with suspend functions? Where is asHandlerFunction coming from?

[Sam-Kruglov]

@indanit copied from ‘org.springframework.web.reactive.function.server.CoRouterFunctionDsl’ or ‘org.springframework.web.reactive.function.server.RouterFunctionDsl’