beta

server/server.go

@@ -0,0 +1,172 @@
+package server
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"runtime"
+	"syscall"
+	"time"
+
+	"otpm/config"
+	"otpm/middleware"
+)
+
+// Server represents the HTTP server
+type Server struct {
+	server *http.Server
+	router *http.ServeMux
+	config *config.Config
+}
+
+// New creates a new server
+func New(cfg *config.Config) *Server {
+	router := http.NewServeMux()
+
+	server := &http.Server{
+		Addr:         fmt.Sprintf(":%d", cfg.Server.Port),
+		Handler:      router,
+		ReadTimeout:  cfg.Server.ReadTimeout,
+		WriteTimeout: cfg.Server.WriteTimeout,
+		IdleTimeout:  120 * time.Second,
+	}
+
+	return &Server{
+		server: server,
+		router: router,
+		config: cfg,
+	}
+}
+
+// Start starts the server
+func (s *Server) Start() error {
+	// Apply global middleware in correct order with enhanced error handling
+	var handler http.Handler = s.router
+
+	// Logger should be first to capture all request details
+	handler = middleware.Logger(handler)
+
+	// CORS next to handle pre-flight requests
+	handler = middleware.CORS(handler)
+
+	// Then Timeout to enforce request deadlines
+	handler = middleware.Timeout(s.config.Server.Timeout)(handler)
+
+	// Recover should be outermost to catch any panics
+	handler = middleware.Recover(handler)
+
+	s.server.Handler = handler
+
+	// Log server configuration at startup
+	log.Printf("Server configuration:\n"+
+		"Address: %s\n"+
+		"Read Timeout: %v\n"+
+		"Write Timeout: %v\n"+
+		"Idle Timeout: %v\n"+
+		"Request Timeout: %v",
+		s.server.Addr,
+		s.server.ReadTimeout,
+		s.server.WriteTimeout,
+		s.server.IdleTimeout,
+		s.config.Server.Timeout,
+	)
+
+	// Start server in a goroutine
+	serverErr := make(chan error, 1)
+	go func() {
+		log.Printf("Server starting on %s", s.server.Addr)
+		if err := s.server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			serverErr <- fmt.Errorf("server error: %w", err)
+		}
+	}()
+
+	// Wait for interrupt signal or server error
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+
+	select {
+	case err := <-serverErr:
+		return err
+	case <-quit:
+		return s.Shutdown()
+	}
+}
+
+// Shutdown gracefully stops the server
+func (s *Server) Shutdown() error {
+	log.Println("Shutting down server...")
+
+	ctx, cancel := context.WithTimeout(context.Background(), s.config.Server.ShutdownTimeout)
+	defer cancel()
+
+	if err := s.server.Shutdown(ctx); err != nil {
+		return fmt.Errorf("graceful shutdown failed: %w", err)
+	}
+
+	log.Println("Server stopped gracefully")
+	return nil
+}
+
+// Router returns the router
+func (s *Server) Router() *http.ServeMux {
+	return s.router
+}
+
+// RegisterRoutes registers all routes
+func (s *Server) RegisterRoutes(routes map[string]http.Handler) {
+	for pattern, handler := range routes {
+		s.router.Handle(pattern, handler)
+	}
+}
+
+// RegisterAuthRoutes registers routes that require authentication
+func (s *Server) RegisterAuthRoutes(routes map[string]http.Handler) {
+	for pattern, handler := range routes {
+		// Apply authentication middleware
+		authHandler := middleware.Auth(s.config.JWT.Secret)(handler)
+		s.router.Handle(pattern, authHandler)
+	}
+}
+
+// RegisterHealthCheck registers an enhanced health check endpoint
+func (s *Server) RegisterHealthCheck() {
+	s.router.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
+		response := map[string]interface{}{
+			"status":    "ok",
+			"timestamp": time.Now().Format(time.RFC3339),
+			"version":   "1.0.0", // Hardcoded version instead of from config
+			"system": map[string]interface{}{
+				"goroutines": runtime.NumGoroutine(),
+				"memory":     getMemoryUsage(),
+			},
+		}
+
+		// Add database status if configured
+		if s.config.Database.DSN != "" { // Changed from URL to DSN to match config
+			dbStatus := "ok"
+			// Removed DB ping check since we don't have DB instance in config
+			response["database"] = dbStatus
+		}
+
+		middleware.SuccessResponse(w, response)
+	})
+}
+
+// getMemoryUsage returns current memory usage in MB
+func getMemoryUsage() map[string]interface{} {
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+	return map[string]interface{}{
+		"alloc_mb":       bToMb(m.Alloc),
+		"total_alloc_mb": bToMb(m.TotalAlloc),
+		"sys_mb":         bToMb(m.Sys),
+		"num_gc":         m.NumGC,
+	}
+}
+
+func bToMb(b uint64) float64 {
+	return float64(b) / 1024 / 1024
+}