Added Repo Scaffolding and Config File

cmd/server/main.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/joeynolan/go-http-server/internal/http/handlers"
+	"github.com/joeynolan/go-http-server/internal/platform/config"
+	ilog "github.com/joeynolan/go-http-server/internal/platform/log"
+)
+
+func main() {
+	// config + logger
+	cfg := config.Load()
+	logger := ilog.New()
+
+	mux := http.NewServeMux()
+	handlers.Register(mux)
+
+	srv := &http.Server{
+		Addr:              fmt.Sprintf(":%d", cfg.Port),
+		Handler:           mux,
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	logger.Infof("starting server on port %d", cfg.Port)
+
+	// Start server
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			logger.Errorf("listen: %v", err)
+			os.Exit(1)
+		}
+	}()
+
+	// Graceful shutdown on SIGINT/SIGTERM
+	stop := make(chan os.Signal, 1)
+	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
+	<-stop
+
+	logger.Infof("shutting down server...")
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		logger.Errorf("server shutdown failed: %v", err)
+	}
+	logger.Infof("bye 👋")
+}

internal/core/doc.go

@@ -0,0 +1 @@
+package core

internal/http/handlers/health.go

@@ -0,0 +1,16 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func Register(mux *http.ServeMux) {
+	mux.HandleFunc("GET /health", healthHandler)
+}
+
+func healthHandler(w http.ResponseWriter, r *http.Request) {
+	resp := map[string]string{"status": "ok"}
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(resp)
+}

internal/platform/config/config.go

@@ -0,0 +1,25 @@
+package config
+
+import (
+	"os"
+	"strconv"
+)
+
+type Config struct {
+	Port int
+}
+
+func Load() Config {
+	return Config{
+		Port: envInt("PORT", 8080),
+	}
+}
+
+func envInt(key string, defaultVal int) int {
+	if v := os.Getenv(key); v != "" {
+		if n, err := strconv.Atoi(v); err == nil {
+			return n
+		}
+	}
+	return defaultVal
+}

internal/platform/log/log.go

@@ -0,0 +1,20 @@
+package log
+
+import (
+	"fmt"
+	"log"
+)
+
+type Logger struct{}
+
+func New() *Logger { return &Logger{} }
+
+func (l *Logger) Infof(format string, v ...any)  { log.Printf("INFO  "+format, v...) }
+func (l *Logger) Errorf(format string, v ...any) { log.Printf("ERROR "+format, v...) }
+
+// Optional convenience
+func (l *Logger) Println(v ...any)          { log.Println(v...) }
+func (l *Logger) Printf(f string, v ...any) { log.Printf(f, v...) }
+
+// Example usage: logger.Infof("starting on :%d", port)
+func Sprintf(f string, v ...any) string { return fmt.Sprintf(f, v...) }