[FEATURE REQUEST] Expose method within handler to shutdown server

[Xenov-X]

I have a task which I'd like to be the last task performed by the Server, with the server closing following completion. I've tried implementing this sending TSTP/TERM to the current PID running the handler, but the server still processes other tasks.

By way of a simple example, HandleShutdownTask should run, followed by shutdown of the Async server / worker (and then the host shortly after)

func HandleShutdownTask(ctx context.Context, t *asynq.Task) error {
    log.Info("[shutdown] Shutdown Queued")

    err = exec.Command("shutdown").Run()
    if err != nil {
        log.Error("Failed to run shutdown command")
        os.Exit(1)
    }
    syscall.Kill(syscall.Getpid(), syscall.SIGTSTP)
    syscall.Kill(syscall.Getpid(), syscall.SIGTERM)
    return nil

However, the syscall signal implementation above doesn't work, with other tasks starting to be processed following completion of the above.

Describe the solution you'd like A means to instruct the Async Server to terminate from within a handler, following completion of the current task.

• Or someone to tell me I'm approaching this wrong :D

[g41797]

shutdown should be supported by asynq itself it's bad idea to kill process if another tasks should be finished of terminated gracefully