fileboy/deamon.go

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974 B
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2019-12-23 08:13:31 +00:00
package main
import (
"io/ioutil"
"os"
"os/exec"
"runtime"
"strconv"
)
func getPidFile() string {
return projectFolder + "/.fileboy.pid"
}
func runAsDeamon() (int, error) {
if runtime.GOOS == "windows" {
logAndExit(PreError, "daemons mode cannot run on windows.")
}
err := stopDeamon()
if err != nil {
logAndExit(PreError, err)
}
_, err = exec.LookPath("fileboy")
if err != nil {
logAndExit(PreError, "cannot found `fileboy` command in the PATH")
}
deamon := exec.Command("fileboy")
deamon.Dir = projectFolder
deamon.Env = os.Environ()
deamon.Stdout = os.Stdout
err = deamon.Start()
if err != nil {
logAndExit(PreError, err)
}
pid := deamon.Process.Pid
if pid != 0 {
ioutil.WriteFile(getPidFile(), []byte(strconv.Itoa(pid)), 0644)
}
return pid, nil
}
func stopDeamon() error {
bs, err := ioutil.ReadFile(getPidFile())
if err != nil {
return nil
}
_ = exec.Command("kill", string(bs)).Run()
os.Remove(getPidFile())
return nil
}