[hw-1] implement cart service

cart/internal/infra/http/middlewares/time_middleware.go

@@ -0,0 +1,26 @@
+package middlewares
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/rs/zerolog/log"
+)
+
+type TimerMiddleware struct {
+	h http.Handler
+}
+
+func NewTimerMiddleware(h http.Handler) http.Handler {
+	return &TimerMiddleware{
+		h: h,
+	}
+}
+
+func (m *TimerMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	defer func(now time.Time) {
+		log.Debug().Msgf("%s %s spent %s", r.Method, r.URL.String(), time.Since(now))
+	}(time.Now())
+
+	m.h.ServeHTTP(w, r)
+}