commit inicial

logging.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+type wrappedWriter struct {
+	http.ResponseWriter
+	statusCode int
+}
+
+func (w *wrappedWriter) WriteHeader(statusCode int) {
+	w.ResponseWriter.WriteHeader(statusCode)
+	w.statusCode = statusCode
+}
+
+func Logging(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+
+		wrapped := &wrappedWriter{
+			ResponseWriter: w,
+			statusCode:     http.StatusOK,
+		}
+
+		next.ServeHTTP(wrapped, r)
+
+		log.Printf("%v %5v %12v %v", wrapped.statusCode, r.Method, time.Since(start), r.URL.Path)
+	})
+}