A negroni middleware to monitor HTTP request stats like Plack::Middleware::ServerStatus::Lite

Currently I don't use this middleware anymore. It may still work, but may not anymore.

Comparing to original Plack::Middleware::ServerStatus::Lite, this middleware has following limitations.

• IdleWorker value is always empty
  • net/http server does not limit total numbers of workers, so this field is meaningless
• Always returns response in JSON formats
• Response does not contain individual processing requests (stats field)
• Access Restriction is not implemented

The lattar three are not implemented because I don't need them currently, but patches are welcome.

See example/main.go.

package main

import (
	"fmt"
	"net/http"

	nss "github.com/astj/negroni-server-status"
	"github.com/urfave/negroni"
)

func main() {
	mux := http.NewServeMux()

	mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
		fmt.Fprint(w, "This is from internal")
	})

	n := negroni.New()

	n.Use(nss.NewMiddleware("/server-status"))

	n.UseHandler(mux)

	n.Run(":3000")
}

In this case, a response from http://localhost:3000/server-status is somewhat like this:

{"Uptime":"60","TotalAccesses":"67","TotalKbytes":"1","BusyWorkers":"1","IdleWorkers":"","stats":[]}

MIT

@astj (Asato Wakisaka)