initial commit

vendor/github.com/ant0ine/go-json-rest/rest/timer.go

@@ -0,0 +1,26 @@
+package rest
+
+import (
+	"time"
+)
+
+// TimerMiddleware computes the elapsed time spent during the execution of the wrapped handler.
+// The result is available to the wrapping handlers as request.Env["ELAPSED_TIME"].(*time.Duration),
+// and as request.Env["START_TIME"].(*time.Time)
+type TimerMiddleware struct{}
+
+// MiddlewareFunc makes TimerMiddleware implement the Middleware interface.
+func (mw *TimerMiddleware) MiddlewareFunc(h HandlerFunc) HandlerFunc {
+	return func(w ResponseWriter, r *Request) {
+
+		start := time.Now()
+		r.Env["START_TIME"] = &start
+
+		// call the handler
+		h(w, r)
+
+		end := time.Now()
+		elapsed := end.Sub(start)
+		r.Env["ELAPSED_TIME"] = &elapsed
+	}
+}