metrics(ticdc): add resolved ts and add changefeed to dataflow (pingc…

…ap#4038) (pingcap#4104)

cdc/owner/changefeed.go

@@ -70,6 +70,8 @@ type changefeed struct {
 
 	metricsChangefeedCheckpointTsGauge    prometheus.Gauge
 	metricsChangefeedCheckpointTsLagGauge prometheus.Gauge
+	metricsChangefeedResolvedTsGauge      prometheus.Gauge
+	metricsChangefeedResolvedTsLagGauge   prometheus.Gauge
 
 	newDDLPuller func(ctx cdcContext.Context, startTs uint64) (DDLPuller, error)
 	newSink      func(ctx cdcContext.Context) (AsyncSink, error)
@@ -284,6 +286,9 @@ LOOP:
 	// init metrics
 	c.metricsChangefeedCheckpointTsGauge = changefeedCheckpointTsGauge.WithLabelValues(c.id)
 	c.metricsChangefeedCheckpointTsLagGauge = changefeedCheckpointTsLagGauge.WithLabelValues(c.id)
+	c.metricsChangefeedResolvedTsGauge = changefeedResolvedTsGauge.WithLabelValues(c.id)
+	c.metricsChangefeedResolvedTsLagGauge = changefeedResolvedTsLagGauge.WithLabelValues(c.id)
+
 	c.initialized = true
 	return nil
 }
@@ -311,10 +316,17 @@ func (c *changefeed) releaseResources(ctx context.Context) {
 		log.Warn("Closing sink failed in Owner", zap.String("changefeedID", c.state.ID), zap.Error(err))
 	}
 	c.wg.Wait()
+
 	changefeedCheckpointTsGauge.DeleteLabelValues(c.id)
 	changefeedCheckpointTsLagGauge.DeleteLabelValues(c.id)
 	c.metricsChangefeedCheckpointTsGauge = nil
 	c.metricsChangefeedCheckpointTsLagGauge = nil
+
+	changefeedResolvedTsGauge.DeleteLabelValues(c.id)
+	changefeedResolvedTsLagGauge.DeleteLabelValues(c.id)
+	c.metricsChangefeedResolvedTsGauge = nil
+	c.metricsChangefeedResolvedTsLagGauge = nil
+
 	c.initialized = false
 }
 
@@ -503,10 +515,13 @@ func (c *changefeed) updateStatus(currentTs int64, barrierTs model.Ts) {
 		}
 		return status, changed, nil
 	})
-	phyTs := oracle.ExtractPhysical(checkpointTs)
+	phyCkpTs := oracle.ExtractPhysical(checkpointTs)
+	c.metricsChangefeedCheckpointTsGauge.Set(float64(phyCkpTs))
+	c.metricsChangefeedCheckpointTsLagGauge.Set(float64(currentTs-phyCkpTs) / 1e3)
 
-	c.metricsChangefeedCheckpointTsGauge.Set(float64(phyTs))
-	c.metricsChangefeedCheckpointTsLagGauge.Set(float64(currentTs-phyTs) / 1e3)
+	phyRTs := oracle.ExtractPhysical(resolvedTs)
+	c.metricsChangefeedResolvedTsGauge.Set(float64(phyRTs))
+	c.metricsChangefeedResolvedTsLagGauge.Set(float64(currentTs-phyRTs) / 1e3)
 }
 
 func (c *changefeed) Close(ctx context.Context) {

cdc/owner/metrics.go

@@ -28,7 +28,21 @@ var (
 			Namespace: "ticdc",
 			Subsystem: "owner",
 			Name:      "checkpoint_ts_lag",
-			Help:      "checkpoint ts lag of changefeeds",
+			Help:      "checkpoint ts lag of changefeeds in seconds",
+		}, []string{"changefeed"})
+	changefeedResolvedTsGauge = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "ticdc",
+			Subsystem: "owner",
+			Name:      "resolved_ts",
+			Help:      "resolved ts of changefeeds",
+		}, []string{"changefeed"})
+	changefeedResolvedTsLagGauge = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "ticdc",
+			Subsystem: "owner",
+			Name:      "resolved_ts_lag",
+			Help:      "resolved ts lag of changefeeds in seconds",
 		}, []string{"changefeed"})
 	ownershipCounter = prometheus.NewCounter(
 		prometheus.CounterOpts{
@@ -63,7 +77,9 @@ const (
 // InitMetrics registers all metrics used in owner
 func InitMetrics(registry *prometheus.Registry) {
 	registry.MustRegister(changefeedCheckpointTsGauge)
+	registry.MustRegister(changefeedResolvedTsGauge)
 	registry.MustRegister(changefeedCheckpointTsLagGauge)
+	registry.MustRegister(changefeedResolvedTsLagGauge)
 	registry.MustRegister(ownershipCounter)
 	registry.MustRegister(ownerMaintainTableNumGauge)
 	registry.MustRegister(changefeedStatusGauge)