first commit

cmd/api/main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"api-service/internal/server"
+
+	"github.com/joho/godotenv" // Import the godotenv package
+
+	_ "api-service/docs"
+)
+
+// @title API Service
+// @version 1.0.0
+// @description A comprehensive Go API service with Swagger documentation
+// @termsOfService http://swagger.io/terms/
+
+// @contact.name API Support
+// @contact.url http://www.swagger.io/support
+// @contact.email support@swagger.io
+
+// @license.name Apache 2.0
+// @license.url http://www.apache.org/licenses/LICENSE-2.0.html
+
+// @host localhost:8080
+// @BasePath /api/v1
+// @schemes http https
+
+func gracefulShutdown(apiServer *http.Server, done chan bool) {
+	// Create context that listens for the interrupt signal from the OS.
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	// Listen for the interrupt signal.
+	<-ctx.Done()
+
+	log.Println("shutting down gracefully, press Ctrl+C again to force")
+	stop() // Allow Ctrl+C to force shutdown
+
+	// The context is used to inform the server it has 5 seconds to finish
+	// the request it is currently handling
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := apiServer.Shutdown(ctx); err != nil {
+		log.Printf("Server forced to shutdown with error: %v", err)
+	}
+
+	log.Println("Server exiting")
+
+	// Notify the main goroutine that the shutdown is complete
+	done <- true
+}
+
+func main() {
+	log.Println("Starting API Service...")
+
+	// Load environment variables from .env file
+	if err := godotenv.Load(); err != nil {
+		log.Printf("Warning: .env file not found or could not be loaded: %v", err)
+		log.Println("Continuing with system environment variables...")
+	}
+
+	server := server.NewServer()
+
+	// Create a done channel to signal when the shutdown is complete
+	done := make(chan bool, 1)
+
+	// Run graceful shutdown in a separate goroutine
+	go gracefulShutdown(server, done)
+
+	log.Printf("Server starting on port %s", server.Addr)
+	err := server.ListenAndServe()
+	if err != nil && err != http.ErrServerClosed {
+		panic(fmt.Sprintf("http server error: %s", err))
+	}
+
+	// Wait for the graceful shutdown to complete
+	<-done
+	log.Println("Graceful shutdown complete.")
+}