mirror of
https://github.com/rclone/rclone.git
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93 lines
1.7 KiB
Go
93 lines
1.7 KiB
Go
package main
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import (
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"flag"
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"github.com/sevlyar/go-daemon"
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"log"
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"os"
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"syscall"
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"time"
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)
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var (
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signal = flag.String("s", "", `send signal to the daemon
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quit — graceful shutdown
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stop — fast shutdown
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reload — reloading the configuration file`)
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)
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func main() {
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flag.Parse()
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daemon.AddCommand(daemon.StringFlag(signal, "quit"), syscall.SIGQUIT, termHandler)
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daemon.AddCommand(daemon.StringFlag(signal, "stop"), syscall.SIGTERM, termHandler)
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daemon.AddCommand(daemon.StringFlag(signal, "reload"), syscall.SIGHUP, reloadHandler)
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cntxt := &daemon.Context{
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PidFileName: "pid",
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PidFilePerm: 0644,
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LogFileName: "log",
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LogFilePerm: 0640,
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WorkDir: "./",
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Umask: 027,
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Args: []string{"[go-daemon sample]"},
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}
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if len(daemon.ActiveFlags()) > 0 {
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d, err := cntxt.Search()
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if err != nil {
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log.Fatalln("Unable send signal to the daemon:", err)
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}
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daemon.SendCommands(d)
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return
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}
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d, err := cntxt.Reborn()
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if err != nil {
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log.Fatalln(err)
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}
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if d != nil {
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return
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}
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defer cntxt.Release()
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log.Println("- - - - - - - - - - - - - - -")
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log.Println("daemon started")
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go worker()
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err = daemon.ServeSignals()
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if err != nil {
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log.Println("Error:", err)
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}
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log.Println("daemon terminated")
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}
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var (
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stop = make(chan struct{})
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done = make(chan struct{})
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)
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func worker() {
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for {
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time.Sleep(time.Second)
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if _, ok := <-stop; ok {
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break
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}
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}
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done <- struct{}{}
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}
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func termHandler(sig os.Signal) error {
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log.Println("terminating...")
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stop <- struct{}{}
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if sig == syscall.SIGQUIT {
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<-done
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}
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return daemon.ErrStop
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}
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func reloadHandler(sig os.Signal) error {
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log.Println("configuration reloaded")
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return nil
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}
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