[#86] Run timer for gas emission event

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

pkg/innerring/timers/timers.go

@@ -20,32 +20,38 @@ type (
 	Timers struct {
 		log *zap.Logger
 
-		epoch localTimer
+		epoch    localTimer
+		alphabet localTimer
 	}
 
 	// Params for timers instance constructor.
 	Params struct {
-		Log           *zap.Logger
-		EpochDuration time.Duration
+		Log              *zap.Logger
+		EpochDuration    time.Duration
+		AlphabetDuration time.Duration
 	}
 )
 
 const (
 	// EpochTimer is a type for HandlerInfo structure.
 	EpochTimer = "EpochTimer"
+	// AlphabetTimer is a type for HandlerInfo structure.
+	AlphabetTimer = "AlphabetTimer"
 )
 
 // New creates instance of timers component.
 func New(p *Params) *Timers {
 	return &Timers{
-		log:   p.Log,
-		epoch: localTimer{duration: p.EpochDuration},
+		log:      p.Log,
+		epoch:    localTimer{duration: p.EpochDuration},
+		alphabet: localTimer{duration: p.AlphabetDuration},
 	}
 }
 
 // Start runs all available local timers.
 func (t *Timers) Start(ctx context.Context) {
 	t.epoch.timer = time.NewTimer(t.epoch.duration)
+	t.alphabet.timer = time.NewTimer(t.alphabet.duration)
 	go t.serve(ctx)
 }
 
@@ -55,16 +61,19 @@ func (t *Timers) serve(ctx context.Context) {
 		case <-ctx.Done():
 			t.log.Info("timers are getting stopped")
 			t.epoch.timer.Stop()
+			t.alphabet.timer.Stop()
 
 			return
 		case <-t.epoch.timer.C:
 			// reset timer so it can tick once again
 			t.epoch.timer.Reset(t.epoch.duration)
-
-			// call handler if it is set
-			if t.epoch.handler != nil {
-				t.epoch.handler(NewEpochTick{})
-			}
+			// call handler, it should be always set
+			t.epoch.handler(NewEpochTick{})
+		case <-t.alphabet.timer.C:
+			// reset timer so it can tick once again
+			t.alphabet.timer.Reset(t.alphabet.duration)
+			// call handler, it should be always set
+			t.alphabet.handler(NewAlphabetEmitTick{})
 		}
 	}
 }
@@ -78,6 +87,8 @@ func (t *Timers) RegisterHandler(h event.HandlerInfo) error {
 	switch h.GetType() {
 	case EpochTimer:
 		t.epoch.handler = h.Handler()
+	case AlphabetTimer:
+		t.alphabet.handler = h.Handler()
 	default:
 		return errors.New("ir/timers: unknown handler type")
 	}