add initial application structure with configuration, logging, and health check endpoints

internal/infra/http/http.go

@@ -0,0 +1,49 @@
+package http
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/labstack/echo/v4"
+	"go.uber.org/fx"
+	"go.uber.org/zap"
+
+	"epic-ent/internal/config"
+)
+
+func NewEcho() *echo.Echo {
+	return echo.New()
+}
+
+func StartServer(lc fx.Lifecycle, cfg *config.Config, e *echo.Echo, logger *zap.Logger) {
+	addr := fmt.Sprintf(":%d", cfg.Server.Port)
+
+	if cfg.Server.ReadTimeout != "" {
+		if d, err := time.ParseDuration(cfg.Server.ReadTimeout); err == nil {
+			e.Server.ReadTimeout = d
+		}
+	}
+	if cfg.Server.WriteTimeout != "" {
+		if d, err := time.ParseDuration(cfg.Server.WriteTimeout); err == nil {
+			e.Server.WriteTimeout = d
+		}
+	}
+
+	lc.Append(fx.Hook{
+		OnStart: func(ctx context.Context) error {
+			logger.Info("http server starting", zap.String("addr", addr))
+			go func() {
+				if err := e.Start(addr); err != nil && err != http.ErrServerClosed {
+					logger.Error("http server stopped", zap.Error(err))
+				}
+			}()
+			return nil
+		},
+		OnStop: func(ctx context.Context) error {
+			logger.Info("http server stopping")
+			return e.Shutdown(ctx)
+		},
+	})
+}