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main.go
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main.go
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package main
import (
"context"
"log"
"net/http"
"os"
"os/signal"
"syscall"
"time"
jwt "github.com/dgrijalva/jwt-go"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"github.com/go-chi/cors"
"github.com/go-chi/jwtauth"
"github.com/go-chi/render"
_ "github.com/go-sql-driver/mysql"
"github.com/jmoiron/sqlx"
"github.com/plumlab/go-chi-sample/internal/handler"
smart "github.com/plumlab/go-chi-sample/internal/middleware"
"github.com/plumlab/go-chi-sample/internal/repo"
"github.com/plumlab/go-chi-sample/internal/service"
"github.com/sony/gobreaker"
"github.com/spf13/viper"
)
var tokenAuth *jwtauth.JWTAuth
func init() {
tokenAuth = jwtauth.New(jwt.SigningMethodHS256.Alg(), []byte(viper.GetString("SIGNING_KEY")), nil)
}
func main() {
viper.AutomaticEnv()
dbURL := viper.GetString("DB_URL")
db, err := sqlx.Connect("mysql", dbURL)
if err != nil {
log.Fatalf("Cannot connect to MySQL at %v: %v", dbURL, err)
}
defer func() {
if err = db.Close(); err != nil {
log.Printf("Error while closing DB connection: %v", err)
}
}()
var st gobreaker.Settings
st.Name = "MYSQLDB"
st.ReadyToTrip = func(counts gobreaker.Counts) bool {
failureRatio := float64(counts.TotalFailures) / float64(counts.Requests)
return counts.Requests >= 3 && failureRatio >= 0.6
}
st.Timeout = time.Minute
cb := gobreaker.NewCircuitBreaker(st)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
var srv http.Server
done := make(chan struct{})
go func() {
sigint := make(chan os.Signal, 1)
// interrupt signal sent from terminal
signal.Notify(sigint, os.Interrupt)
// sigterm signal sent from kubernetes
signal.Notify(sigint, syscall.SIGTERM)
<-sigint
// We received an interrupt signal, shut down gracefully
if err := srv.Shutdown(ctx); err != nil {
log.Printf("HTTP server Shutdown: %v", err)
}
close(done)
}()
r := chi.NewRouter()
cors := cors.New(cors.Options{
AllowedOrigins: []string{"*"},
AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
AllowedHeaders: []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
ExposedHeaders: []string{"Link"},
AllowCredentials: true,
MaxAge: 300, // Maximum value not ignored by any of major browsers
})
r.Use(cors.Handler)
r.Use(middleware.RequestID)
r.Use(middleware.Logger)
r.Use(middleware.URLFormat)
r.Use(middleware.RealIP)
r.Use(middleware.Recoverer)
r.Use(middleware.Timeout(30 * time.Second))
r.Use(middleware.ThrottleBacklog(50, 100, 5*time.Second))
r.Use(render.SetContentType(render.ContentTypeJSON))
r.Use(middleware.Heartbeat("/ping"))
r.Mount("/debug", middleware.Profiler())
userRepo := repo.NewUser(cb, db)
accountHandler := handler.NewAccount(service.NewAccount(userRepo))
r.Post("/signin", accountHandler.Login)
r.Put("/register", accountHandler.Register)
r.Post("/forgot-password", accountHandler.ForgotPassword)
r.Post("/reset-password", accountHandler.ResetPassword)
r.Post("/verify-token", accountHandler.VerifyPasswordResetToken)
r.Post("/verify-email", accountHandler.VerifyEmailToken)
r.Group(func(r chi.Router) {
r.Use(jwtauth.Verifier(tokenAuth))
r.Use(jwtauth.Authenticator)
r.Use(smart.Verifier(userRepo))
r.Post("/signout", accountHandler.Logout)
})
srv = http.Server{
Addr: ":8080",
Handler: r,
}
if err := srv.ListenAndServe(); err != http.ErrServerClosed {
log.Fatalf("HTTP server ListenAndServe: %v", err)
}
<-done
}