feat(backend): establish gin sqlite service skeleton

2026-07-25 22:29:56 +08:00
parent 84f2da3cf7
commit ab21219a07
32 changed files with 1854 additions and 42 deletions
@@ -0,0 +1,113 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"cmroubao/backend-api/internal/config"
+	"cmroubao/backend-api/internal/platform/database"
+	"cmroubao/backend-api/internal/transport/httpapi"
+)
+
+func main() {
+	if err := run(); err != nil {
+		log.Printf("cmroubao API stopped: %v", err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	cfg, err := config.Load(os.LookupEnv)
+	if err != nil {
+		return err
+	}
+
+	startupContext, cancelStartup := context.WithTimeout(
+		context.Background(),
+		cfg.ReadTimeout,
+	)
+	defer cancelStartup()
+	db, err := database.Open(startupContext, cfg.DatabasePath)
+	if err != nil {
+		return errors.New("database startup failed")
+	}
+	defer func() {
+		if err := db.Close(); err != nil {
+			log.Print("database close failed")
+		}
+	}()
+
+	router, err := httpapi.NewRouter(db, func(event string) {
+		log.Print(event)
+	})
+	if err != nil {
+		return errors.New("HTTP router setup failed")
+	}
+	server := httpapi.NewServer(cfg, router)
+
+	signalContext, stopSignals := signal.NotifyContext(
+		context.Background(),
+		os.Interrupt,
+		syscall.SIGTERM,
+	)
+	defer stopSignals()
+
+	serverErrors := make(chan error, 1)
+	go func() {
+		serverErrors <- server.ListenAndServe()
+	}()
+
+	select {
+	case err := <-serverErrors:
+		if errors.Is(err, http.ErrServerClosed) {
+			return nil
+		}
+		return errors.New("HTTP server failed")
+	case <-signalContext.Done():
+		return shutdownServer(server, serverErrors, cfg.ShutdownTimeout)
+	}
+}
+
+func shutdownServer(
+	server *http.Server,
+	serverErrors <-chan error,
+	timeout time.Duration,
+) error {
+	shutdownContext, cancelShutdown := context.WithTimeout(
+		context.Background(),
+		timeout,
+	)
+	defer cancelShutdown()
+	shutdownErr := server.Shutdown(shutdownContext)
+	if shutdownErr != nil {
+		if err := server.Close(); err != nil {
+			return errors.New("HTTP server force close failed")
+		}
+	}
+
+	waitTimeout := timeout
+	if waitTimeout > time.Second {
+		waitTimeout = time.Second
+	}
+	timer := time.NewTimer(waitTimeout)
+	defer timer.Stop()
+	select {
+	case err := <-serverErrors:
+		if err != nil && !errors.Is(err, http.ErrServerClosed) {
+			return errors.New("HTTP server failed during shutdown")
+		}
+	case <-timer.C:
+		_ = server.Close()
+		return errors.New("HTTP server did not stop")
+	}
+	if shutdownErr != nil {
+		return errors.New("HTTP server graceful shutdown timed out")
+	}
+	return nil
+}