Handling requests with Go

Go Middleware

The Clerk Go SDK provides a simple middleware that adds the active session to the request’s context.

package main

import (
  "net/http"
  "github.com/clerkinc/clerk-sdk-go/clerk"
)

func main() {
	client, _ := clerk.NewClient("CLERK_API_KEY")
	
	mux := http.NewServeMux()

	injectActiveSession := clerk.WithSession(client)
	mux.Handle("/hello", injectActiveSession(helloUserHandler(client)))

	http.ListenAndServe(":8080", mux)
}

func helloUserHandler(client clerk.Client) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		
		sessClaims, ok := ctx.Value(clerk.ActiveSessionClaims).(*clerk.SessionClaims)
		if !ok {
			w.WriteHeader(http.StatusUnauthorized)
			w.Write([]byte("Unauthorized"))
			return
		}

		user, err := client.Users().Read(sessClaims.Subject)
		if err != nil {
			panic(err)
		}

		w.Write([]byte("Welcome " + *user.FirstName))
	}
}