refactor: Restructure project files for better organization, readability, and maintainability

internal/server.go

@@ -0,0 +1,70 @@
+package pkg
+
+/*
+Copyright 2024 Jonas Kaninda
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+import (
+	"context"
+	"fmt"
+	"github.com/jkaninda/goma-gateway/pkg/logger"
+	"net/http"
+	"os"
+	"sync"
+	"time"
+)
+
+func (gatewayServer GatewayServer) Start(ctx context.Context) error {
+	logger.Info("Initializing routes...")
+	route := gatewayServer.Initialize()
+	logger.Info("Initializing routes...done")
+	srv := &http.Server{
+		Addr:         gatewayServer.gateway.ListenAddr,
+		WriteTimeout: time.Second * time.Duration(gatewayServer.gateway.WriteTimeout),
+		ReadTimeout:  time.Second * time.Duration(gatewayServer.gateway.ReadTimeout),
+		IdleTimeout:  time.Second * time.Duration(gatewayServer.gateway.IdleTimeout),
+		Handler:      route, // Pass our instance of gorilla/mux in.
+	}
+	if !gatewayServer.gateway.DisableDisplayRouteOnStart {
+		printRoute(gatewayServer.gateway.Routes)
+	}
+	// Set KeepAlive
+	srv.SetKeepAlivesEnabled(!gatewayServer.gateway.DisableKeepAlive)
+	go func() {
+
+		logger.Info("Started Goma Gateway server on %v", gatewayServer.gateway.ListenAddr)
+		if err := srv.ListenAndServe(); err != nil {
+			logger.Error("Error starting Goma Gateway server: %v", err)
+		}
+	}()
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	go func() {
+		defer wg.Done()
+		<-ctx.Done()
+		shutdownCtx := context.Background()
+		shutdownCtx, cancel := context.WithTimeout(shutdownCtx, 10*time.Second)
+		defer cancel()
+		if err := srv.Shutdown(shutdownCtx); err != nil {
+			_, err := fmt.Fprintf(os.Stderr, "error shutting down Goma Gateway server: %s\n", err)
+			if err != nil {
+				return
+			}
+		}
+	}()
+	wg.Wait()
+	return nil
+
+}