Fix for open-telemetry#11351

Author: shivanthzen

processor/processorhelper/documentation.md

@@ -6,6 +6,14 @@
 
 The following telemetry is emitted by this component.
 
+### otelcol_processor_errors
+
+Number of errors emitted from the processor [alpha]
+
+| Unit | Metric Type | Value Type | Monotonic |
+| ---- | ----------- | ---------- | --------- |
+| {errors} | Sum | Int | true |
+
 ### otelcol_processor_incoming_items
 
 Number of items passed to the processor. [alpha]
@@ -21,3 +29,11 @@ Number of items emitted from the processor. [alpha]
 | Unit | Metric Type | Value Type | Monotonic |
 | ---- | ----------- | ---------- | --------- |
 | {items} | Sum | Int | true |
+
+### otelcol_processor_skips
+
+Number of skips by processor [alpha]
+
+| Unit | Metric Type | Value Type | Monotonic |
+| ---- | ----------- | ---------- | --------- |
+| {errors} | Sum | Int | true |

processor/processorhelper/internal/metadata/generated_telemetry.go

@@ -51,17 +51,20 @@ func NewLogs(
 		span.AddEvent("Start processing.", eventOptions)
 		recordsIn := ld.LogRecordCount()
 
+		obs.recordIn(ctx, recordsIn)
 		var errFunc error
 		ld, errFunc = logsFunc(ctx, ld)
 		span.AddEvent("End processing.", eventOptions)
 		if errFunc != nil {
 			if errors.Is(errFunc, ErrSkipProcessingData) {
+				obs.processorSkipped(ctx)
 				return nil
 			}
+			obs.processorError(ctx)
 			return errFunc
 		}
 		recordsOut := ld.LogRecordCount()
-		obs.recordInOut(ctx, recordsIn, recordsOut)
+		obs.recordOut(ctx, recordsOut)
 		return nextConsumer.ConsumeLogs(ctx, ld)
 	}, bs.consumerOptions...)
 	if err != nil {

processor/processorhelper/logs.go

@@ -28,3 +28,22 @@ telemetry:
       sum:
         value_type: int
         monotonic: true
+
+    processor_errors:
+      enabled: true
+      stability:
+        level: alpha
+      description: Number of errors emitted from the processor
+      unit: "{errors}"
+      sum:
+        value_type: int
+        monotonic: true
+    processor_skips:
+      enabled: true
+      stability:
+        level: alpha
+      description: Number of skips by processor
+      unit: ""
+      sum:
+        value_type: int
+        monotonic: true

processor/processorhelper/metadata.yaml

@@ -50,18 +50,21 @@ func NewMetrics(
 		span := trace.SpanFromContext(ctx)
 		span.AddEvent("Start processing.", eventOptions)
 		pointsIn := md.DataPointCount()
+		obs.recordIn(ctx, pointsIn)
 
 		var errFunc error
 		md, errFunc = metricsFunc(ctx, md)
 		span.AddEvent("End processing.", eventOptions)
 		if errFunc != nil {
 			if errors.Is(errFunc, ErrSkipProcessingData) {
+				obs.processorSkipped(ctx)
 				return nil
 			}
+			obs.processorError(ctx)
 			return errFunc
 		}
 		pointsOut := md.DataPointCount()
-		obs.recordInOut(ctx, pointsIn, pointsOut)
+		obs.recordOut(ctx, pointsOut)
 		return nextConsumer.ConsumeMetrics(ctx, md)
 	}, bs.consumerOptions...)
 	if err != nil {

processor/processorhelper/metrics.go

@@ -62,7 +62,18 @@ func newObsReport(set processor.Settings, signal pipeline.Signal) (*obsReport, e
 	}, nil
 }
 
-func (or *obsReport) recordInOut(ctx context.Context, incoming, outgoing int) {
+func (or *obsReport) recordIn(ctx context.Context, incoming int) {
 	or.telemetryBuilder.ProcessorIncomingItems.Add(ctx, int64(incoming), metric.WithAttributes(or.otelAttrs...))
+}
+
+func (or *obsReport) recordOut(ctx context.Context, outgoing int) {
 	or.telemetryBuilder.ProcessorOutgoingItems.Add(ctx, int64(outgoing), metric.WithAttributes(or.otelAttrs...))
 }
+
+func (or *obsReport) processorError(ctx context.Context) {
+	or.telemetryBuilder.ProcessorErrors.Add(ctx, 1, metric.WithAttributes(or.otelAttrs...))
+}
+
+func (or *obsReport) processorSkipped(ctx context.Context) {
+	or.telemetryBuilder.ProcessorSkips.Add(ctx, 1, metric.WithAttributes(or.otelAttrs...))
+}

processor/processorhelper/obsreport.go

@@ -51,20 +51,22 @@ func NewTraces(
 		span.AddEvent("Start processing.", eventOptions)
 		spansIn := td.SpanCount()
 
+		obs.recordIn(ctx, spansIn)
 		var errFunc error
 		td, errFunc = tracesFunc(ctx, td)
 		span.AddEvent("End processing.", eventOptions)
 		if errFunc != nil {
 			if errors.Is(errFunc, ErrSkipProcessingData) {
+				obs.processorSkipped(ctx)
 				return nil
 			}
+			obs.processorError(ctx)
 			return errFunc
 		}
 		spansOut := td.SpanCount()
-		obs.recordInOut(ctx, spansIn, spansOut)
+		obs.recordOut(ctx, spansOut)
 		return nextConsumer.ConsumeTraces(ctx, td)
 	}, bs.consumerOptions...)
-
 	if err != nil {
 		return nil, err
 	}