Add logger for action handlers

logger.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+// Logger wraps the handler function with basic log message.
+func Logger(fn func(w http.ResponseWriter, r *http.Request, param httprouter.Params)) func(w http.ResponseWriter, r *http.Request, param httprouter.Params) {
+	return func(w http.ResponseWriter, r *http.Request, param httprouter.Params) {
+		log.Printf("[%s %s] Requested", r.Method, r.URL.Path)
+		start := time.Now()
+		fn(w, r, param)
+		log.Printf("[%s %s] Completed in %v", r.Method, r.URL.Path, time.Since(start))
+	}
+}

routes.go

@@ -27,7 +27,7 @@ func AllRoutes() Routes {
 func NewRouter(routes Routes) *httprouter.Router {
 	router := httprouter.New()
 	for _, route := range routes {
-		router.Handle(route.Method, route.Path, route.HandlerFunc)
+		router.Handle(route.Method, route.Path, Logger(route.HandlerFunc))
 	}
 	return router
 }