benchmark.go

package handlers

// handlers
// Copyright (C) 2018 Maximilian Pachl

// MIT License
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

// ---------------------------------------------------------------------------------------
//  imports
// ---------------------------------------------------------------------------------------

import (
	"net/http"
	"time"

	"github.com/sirupsen/logrus"
)

// ---------------------------------------------------------------------------------------
//  public functions
// ---------------------------------------------------------------------------------------

// Benchmark logs the exection time of each request using logrus.
// In order to work correctly this Adapter should be the first
// Adapter in the chain.
func Benchmark() Adapter {
	return func(h http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			start := time.Now()
			h.ServeHTTP(w, r)
			logrus.Infof("%s %s processed in %s", r.Method, r.URL, time.Since(start))
		})
	}
}