Example of using graphql-go/handler with a custom JWT middleware

main.go

package main

import (
	"net/http"
	"log"

	"github.com/graphql-go/handler"
	"github.com/graphql-go/relay/examples/starwars"
)

func myJWTMiddleware(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// Implement your JWT authentication flow here
		// ...
		log.Println("JWT Request Authenticated OK")
		next.ServeHTTP(w, r)
	})
}

func main() {

	graphqlHandler := handler.New(&handler.Config{
		Schema: &starwars.Schema,
		Pretty: true,
	})

	http.Handle("/graphql/", myJWTMiddleware(graphqlHandler))
	http.ListenAndServe(":3000", nil)
}