Exemplo n.º 1
0
func (sys *System) watchProcessState(setProcStatus func(name string, status bool)) {
	go func() {

	L:
		for {
			select {
			case proc := <-sys.startChan:
				log.Log(sys.ctx).Debug("Got subrocess start", "process", proc, "app", sys.name)
				sys.wg.Add(1)
				setProcStatus(proc, true)
			case proc := <-sys.stopChan:
				log.Log(sys.ctx).Debug("Got subprocess stop", "process", proc, "app", sys.name)
				sys.wg.Done()
				setProcStatus(proc, false)
			case <-sys.ctx.Done():
				break L
			}
		}

		for {
			select {
			case proc := <-sys.stopChan:
				log.Log(sys.ctx).Debug("Got subprocess stop", "process", proc, "app", sys.name)
				setProcStatus(proc, false)
				sys.wg.Done()
			case <-sys.parentContext.Done():
				return
			}
		}
	}()

	<-sys.ctx.Done()
}
Exemplo n.º 2
0
// Wait waits for the application and its subprocesses to stop
func (sys *System) Wait() {
	log.Log(sys.ctx).Debug("Waiting on application stop", "app", sys.name)

	procs := make(map[string]bool)

	sys.watchProcessState(func(name string, status bool) {
		procs[name] = status
	})

	ch := make(chan struct{})

	log.Log(sys.ctx).Debug("System stopped, waiting on subprocesses", "app", sys.name)
	go func() {
		sys.wg.Wait()
		close(ch)
	}()

	select {
	case <-ch:
		log.Log(sys.ctx).Debug("All subprocesses stopped", "app", sys.name)
	case <-time.After(1 * time.Second):
		log.Log(sys.ctx).Error("Some subprocesses failed to stop in time", "app", sys.name)
		for k, v := range procs {
			if v {
				log.Log(sys.ctx).Error("Subprocess failed to stop in time", "proc", k, "app", sys.name)
			}
		}
	}

	sys.parentCancel()
}
Exemplo n.º 3
0
// StartWithParent starts the application with the parent sys as the context
func (sys *System) StartWithParent(parent *System) {

	sys.parentContext = context.Background()
	sys.parentContext, sys.parentCancel = context.WithCancel(sys.parentContext)

	sys.ctx, sys.cancelFn = context.WithCancel(parent.ctx)

	log.Log(sys.ctx).Debug("Starting system with parent system", "name", sys.name, "parent", parent.name)
}
Exemplo n.º 4
0
// StartWithContext starts the application
func (sys *System) StartWithContext(ctx context.Context) {

	sys.parentContext = ctx
	sys.parentContext, sys.parentCancel = context.WithCancel(sys.parentContext)

	sys.ctx, sys.cancelFn = context.WithCancel(sys.parentContext)

	log.Log(sys.ctx).Debug("Starting system", "system", sys.name)
}
Exemplo n.º 5
0
// Start starts the application
func (sys *System) Start() {

	sys.parentContext = context.Background()
	sys.parentContext, sys.parentCancel = context.WithCancel(sys.parentContext)

	sys.ctx, sys.cancelFn = context.WithCancel(sys.parentContext)

	log.Log(sys.ctx).Debug("Starting system", "name", sys.name)
}
Exemplo n.º 6
0
// Stop stops the application
func (sys *System) Stop() {

	log.Log(sys.ctx).Debug("Stopping system", "name", sys.name)

	sys.cancelFn()
}