Failed to load API definition with go-openapi/runtime/middleware-CodePudding

I am using golang's http/net along with github.com/go-openapi/runtime/middleware to explore Swagger within go. Using the following code:

  func setupAndRunHTTPServer() {
    httpPort := envString("HTTP_PORT", defaultHTTPPort)
    httpAddr := net.JoinHostPort("localhost", httpPort)
    service := planting.NewPlantingService()
    eps := endpoints.NewEndpointSet(*service)
    httpServerMux := transport.NewHTTPHandler(eps)

    // Setup the swagger docs and UI.
    var sh http.Handler = middleware.SwaggerUI(middleware.SwaggerUIOpts{}, nil)
    httpServerMux.Handle("/docs", sh)

    // The HTTP listener mounts the Go kit HTTP handler we created.
    httpListener, err := net.Listen("tcp", httpAddr)
    if err != nil {
      os.Exit(1)
    }

    // Serve using the net/http.ServerMux creaded in transport package.
    err = http.Serve(httpListener, httpServerMux)
    if err != nil {
      os.Exit(2)
    }
    defer httpListener.Close()
  }

When I go to http://localhost:8088/docs I get the following:

At first glance it appears to me that the net/http library along with the middleware cannot find the swagger.json file relative to the server root. I have that file located in:

matthew.hoggan in ~/go/src/project/root on TemplateServer*
⚡ ls -l ./docs/swagger.json
-rw-r--r--  1 matthew.hoggan  staff  3880 Nov 30 04:47 ./docs/swagger.json

My question is, how do I tell the middleware, where to find the swagger.json situated in the current directory while testing the cloned project prior to deploying it?

CodePudding user response：

from the source code it appears you need to do the following:

var sh http.Handler = middleware.SwaggerUI(middleware.SwaggerUIOpts{SpecURL: "./docs/swagger.json"}, nil)

If SpecUrl is not specified it will default to: /swagger.json