httptest.go

package main

import (
"fmt"
"log"
"net/http"

"github.com/prometheus/procfs"
)

func main() {

    //监听协议
    http.HandleFunc("/", HelloWorldHandler)
    http.HandleFunc("/cpuinfo", CpuInfoHandler)
    //监听服务
    err := http.ListenAndServe("0.0.0.0:7777",nil)

    if err != nil {
        fmt.Println("服务器错误")
    }

}


func HelloWorldHandler(w http.ResponseWriter,r *http.Request)  {
	fmt.Fprintf(w,"HelloWorld!")
}


func CpuInfoHandler(w http.ResponseWriter,r *http.Request)  {
	p, err := procfs.Self()
	if err != nil {
		log.Fatalf("could not get process: %s", err)
	}

	stat, err := p.NewStat()
	if err != nil {
		log.Fatalf("could not get process stat: %s", err)
	}
	//    	fmt.Printf("command:  %s\n", stat.Comm)
	//    	fmt.Printf("cpu time: %fs\n", stat.CPUTime())
	//    	fmt.Printf("vsize:    %dB\n", stat.VirtualMemory())
	//    	fmt.Printf("rss:      %dB\n", stat.ResidentMemory())
	cpuinfostring := fmt.Sprintf("command:  %s\n, cpu time: %fs\n, vsize: %dB\n, rss: %dB\n", stat.Comm, stat.CPUTime(), stat.VirtualMemory(), stat.ResidentMemory())
    fmt.Fprintf(w, cpuinfostring)
}