shop/cmd/main.go

package main

import (
	"context"
	"github.com/99designs/gqlgen/graphql/handler"
	"github.com/gshopify/service-wrapper/config"
	"github.com/gshopify/service-wrapper/server"
	"github.com/spf13/pflag"
	"gshopper.com/gshopify/shop/graphql"
	"gshopper.com/gshopify/shop/graphql/generated"
	"log"
	"os"
	"os/signal"
	"syscall"
	"time"
)

var (
	signals  = make(chan os.Signal, 1)
	fPort    = pflag.IntP("port", "p", 80, "exposing port")
	fTimeout = pflag.DurationP("timeout", "t", 15*time.Second, "timeout duration")
	fDebug   = pflag.Bool("debug", false, "debug mode")
)

func init() {
	pflag.Parse()

	config.Instance()
	config.PrintBanner()
}

func main() {
	opts, err := server.NewDefaultOpts(*fPort, *fTimeout)
	if err != nil {
		panic(err)
	}

	resolver, err := graphql.New(context.Background(), *fDebug)
	if err != nil {
		panic(err)
	}

	srv := server.NewServer(handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{
		Resolvers: resolver,
	})), opts)

	go func() {
		if err := srv.ListenAndServe(); err != nil {
			log.Println(err)
		}
	}()

	signal.Notify(signals, os.Interrupt, syscall.SIGTERM, syscall.SIGINT)
	<-signals

	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
	defer cancel()

	_ = srv.Shutdown(ctx)

	log.Println("shutting down")
	os.Exit(0)
}