/
proc.go
82 lines (68 loc) · 1.34 KB
/
proc.go
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package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"strconv"
"time"
"github.com/shirou/gopsutil/process"
)
func loadPid(filename string) (int32, error) {
pidfile, err := os.Open(filename)
if err != nil {
return 0, err
}
b, err := ioutil.ReadAll(pidfile)
if err != nil {
return 0, err
}
if err != nil {
warn(err)
return 0, err
}
pid, err := strconv.Atoi(string(b))
if err != nil {
return 0, err
}
if err != nil {
warn(err)
return 0, err
}
alive, err := process.PidExists(int32(pid))
if err != nil {
return 0, err
}
if !alive {
return 0, fmt.Errorf("Pid not exists: %v", pid)
}
return int32(pid), nil
}
// dockerData gather date from docker daemon directly (using DOCKER_HOST)
// and from proc/DOCKER_PID/status and publish those to conn
func storeProc(pidfile string, interval time.Duration) {
pid, err := loadPid(pidfile)
if err != nil {
warn(err)
return
}
p, err := process.NewProcess(int32(pid))
warn(err)
if err != nil {
return
}
// threads
threads, err := p.NumThreads()
warn(err)
if err != nil {
return
}
mi, err := p.MemoryInfo()
warn(err)
if err != nil {
return
}
procData := map[string]interface{}{"threads": threads, "vmsize": int(mi.VMS), "rss": int(mi.RSS)}
log.Println("proc = ", procData)
store("process", map[string]string{"pid": strconv.Itoa(int(pid))}, procData)
}