users/cmd/gateway/main.go

package main

import (
	"flag"
	"fmt"
	"log"
	"net/http"

	"git.chrishayward.xyz/x/users/gateway"
	"git.chrishayward.xyz/x/users/proto"
	"google.golang.org/grpc"
)

var (
	port         = flag.Int("port", 8081, "--port=8081")
	serverAddr   = flag.String("serverAddr", "localhost", "--serverAddr=localhost")
	serverPort   = flag.Int("serverPort", 8080, "--serverPort=8080")
	serverSecret = flag.String("serverSecret", "...", "--serverSecret=...")
)

func main() {
	// Parse the optional flags.
	flag.Parse()

	// Create the connection to the server.
	conn, err := grpc.Dial(fmt.Sprintf("%s:%d", *serverAddr, *serverPort))
	if err != nil {
		log.Fatal(err)
	}

	// Defer closing the connection.
	defer conn.Close()

	// Create the client.
	client := proto.NewUsersClient(conn)

	// Setup HTTP endpoints.
	http.HandleFunc("/register", gateway.Register(client))
	http.HandleFunc("/login", gateway.Login(client))
	http.HandleFunc("/authorize", gateway.Authorize(client, serverSecret))
	http.HandleFunc("/reset_password", gateway.ResetPassword(client, port))
	http.HandleFunc("/change_password", gateway.ChangePassword(client))

	// Listen for requests.
	log.Printf("Forwarding from :%d to %s:%d", *port, *serverAddr, *serverPort)
	if err := http.ListenAndServe(fmt.Sprintf(":%d", *port), nil); err != nil {
		log.Fatal(err)
	}
}