Getting params gin.wrapH

testing.go

package main

import (
	"context"
	"encoding/json"
	"log"
	"net/http"

	"github.com/gin-gonic/gin"

	httptransport "github.com/go-kit/kit/transport/http"
)

type key string

const paramsKey key = "params"

func meuWrap(h http.Handler) gin.HandlerFunc {
	return func(c *gin.Context) {

		myParams := make(map[string]string)
		for _, lala := range c.Params {
			myParams[lala.Key] = lala.Value
		}

		ctx := context.WithValue(c, paramsKey, myParams)

		r := c.Request.WithContext(ctx)

		h.ServeHTTP(c.Writer, r)
	}
}

func main() {
	router := gin.Default()

	requestURIHandler := httptransport.NewServer(
		RequestUriEndpoint(),
		decodeRequestUri,
		encodeResponse,
	)

	router.GET("/user/:id", meuWrap(requestURIHandler))

	router.Run(":8010")
}

func decodeRequestUri(ctx context.Context, r *http.Request) (interface{}, error) {
	data, ok := ctx.Value(paramsKey).(map[string]string)
	if !ok {
		return nil, nil
	}
	id := data["id"]
	return &SampleRequest{Name: id}, nil
}

func encodeResponse(_ context.Context, w http.ResponseWriter, response interface{}) error {
	return json.NewEncoder(w).Encode(response)
}

func RequestUriEndpoint() endpoint.Endpoint {
	return func(ctx context.Context, request interface{}) (interface{}, error) {
		req := request.(SampleRequest)
		return SampleRequest{Name: req.Name}, nil
	}
}

type SampleRequest struct {
	Name string `json:"name"`
}