user_me.go

package actions

import (
	"encoding/json"
	"fmt"
	"go.opencensus.io/trace"
	"net/http"
)

type GetUserMeHandler struct {
}

func NewGetUserMeHandler() *GetUserMeHandler {
	return &GetUserMeHandler{}
}

// ServeHTTP check user principal after authentication
func (g *GetUserMeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	_, span := trace.StartSpan(r.Context(), "GetUserMeHandler.ServeHTTP")
	defer span.End()

	principal, isValid := getPrincipalOrElsePrepareFailedResponse(w, r)
	if !isValid {
		return
	}

	responseBody, err := json.Marshal(&principal)
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-type", "application/json")
	w.WriteHeader(http.StatusOK)
	_, err = w.Write(responseBody)
	if err != nil {
		logMsg := fmt.Sprintf("Error creating response body. Err: %s", err)
		respMsg := "Could not handle request"
		prepareResponse(w, logMsg, respMsg, http.StatusInternalServerError)
	}
}