forked from ebhomengo/niki
133 lines
3.3 KiB
Go
133 lines
3.3 KiB
Go
package shoppingbasketapp
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import (
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"context"
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"fmt"
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"git.gocasts.ir/ebhomengo/niki/adapter/redis"
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logger "git.gocasts.ir/ebhomengo/niki/logger"
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"git.gocasts.ir/ebhomengo/niki/pkg/httpserver"
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"git.gocasts.ir/ebhomengo/niki/shoppingbasketapp/delivery/http"
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"git.gocasts.ir/ebhomengo/niki/shoppingbasketapp/repository"
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"git.gocasts.ir/ebhomengo/niki/shoppingbasketapp/service/cart"
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"log/slog"
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"os"
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"os/signal"
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"sync"
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"syscall"
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)
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type Application struct {
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Repo repository.Repo
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Service cart.Service
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Handler http.Handler
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Server http.Server
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Config Config
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Logger *slog.Logger
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}
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func (app Application) Setup(cfg Config) (Application, error) {
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l := logger.New(cfg.Logger, &slog.HandlerOptions{
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Level: slog.LevelDebug,
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})
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adapter := redis.New(cfg.Redis)
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repo := repository.New(adapter.Client(), cfg.Repo)
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validator := cart.NewValidate()
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svc := cart.New(validator, l, repo)
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handler := http.NewHandler(svc)
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httpServer, err := httpserver.New(cfg.HTTPServer)
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if err != nil {
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l.Error("failed to initialize http server", "error", err)
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return Application{}, err
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}
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server := http.NewServer(handler, httpServer)
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return Application{
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Repo: repo,
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Service: svc,
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Handler: handler,
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Server: server,
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Config: cfg,
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Logger: l,
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}, nil
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}
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func (app Application) Start() {
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var wg sync.WaitGroup
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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startServers(app, &wg)
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<-ctx.Done()
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app.Logger.Info("Shutdown signal received...")
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shutdownTimeoutCtx, cancel := context.WithTimeout(context.Background(), app.Config.HTTPServer.ShutdownTimeout)
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defer cancel()
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if app.shutdownServers(shutdownTimeoutCtx) {
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app.Logger.Info("Servers shutdown gracefully")
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} else {
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app.Logger.Warn("Shutdown timed out, exiting application")
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return
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}
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wg.Wait()
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app.Logger.Info("shopping-basket-app stopped")
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}
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func startServers(app Application, wg *sync.WaitGroup) {
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wg.Add(1)
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go func() {
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defer wg.Wait()
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app.Logger.Info(fmt.Sprintf("HTTP server starting on port: %d", app.Config.HTTPServer.Port))
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if err := app.Server.Serve(); err != nil {
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app.Logger.Error(fmt.Sprintf("error listen and serve HTTP server on port %d", app.Config.HTTPServer.Port))
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}
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app.Logger.Info(fmt.Sprintf("HTTP server stopped on port %d", app.Config.HTTPServer.Port))
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}()
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}
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func (app Application) shutdownServers(ctx context.Context) bool {
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app.Logger.Info("Starting server shutdown process...")
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shutdownDone := make(chan struct{})
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go func() {
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var shutdownWg sync.WaitGroup
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shutdownWg.Add(1)
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go app.shutdownHTTPServe(ctx, &shutdownWg)
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shutdownWg.Wait()
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close(shutdownDone)
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app.Logger.Info("All servers have been shut down successfully.")
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}()
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select {
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case <-shutdownDone:
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return true
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case <-ctx.Done():
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return false
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}
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}
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func (app Application) shutdownHTTPServe(parentCtx context.Context, wg *sync.WaitGroup) {
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app.Logger.Info(fmt.Sprintf("Starting gracefully shutdown for http server on port %d", app.Config.HTTPServer.Port))
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defer wg.Done()
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httpShutdownCtx, httpCancel := context.WithTimeout(parentCtx, app.Config.HTTPServer.ShutdownTimeout)
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defer httpCancel()
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if err := app.Server.Stop(httpShutdownCtx); err != nil {
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app.Logger.Error(fmt.Sprintf("failed http server gracefully shutdown: %v", err))
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}
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app.Logger.Info("Successfully http server gracefully shutdown")
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}
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