// Handle lifecycle events func handleSignals(srv *falcore.Server) { var sig os.Signal var sigChan = make(chan os.Signal) signal.Notify(sigChan, syscall.SIGHUP, syscall.SIGUSR1, syscall.SIGINT, syscall.SIGTERM, syscall.SIGTSTP) pid := syscall.Getpid() for { sig = <-sigChan switch sig { case syscall.SIGHUP: // send this to the paraent process to initiate the restart fmt.Println(pid, "Received SIGHUP. forking.") cpid, err := forker(srv) fmt.Println(pid, "Forked pid:", cpid, "errno:", err) case syscall.SIGUSR1: // child sends this back to the parent when it's ready to Accept fmt.Println(pid, "Received SIGUSR1. Stopping accept.") srv.StopAccepting() case syscall.SIGINT: fmt.Println(pid, "Received SIGINT. Shutting down.") os.Exit(0) case syscall.SIGTERM: fmt.Println(pid, "Received SIGTERM. Terminating.") os.Exit(0) case syscall.SIGTSTP: fmt.Println(pid, "Received SIGTSTP. Stopping.") syscall.Kill(pid, syscall.SIGSTOP) default: fmt.Println(pid, "Received", sig, ": ignoring") } } }