[sdk-metrics] Refactor AggregatorStore (#5509)

Author: utpilla

src/OpenTelemetry/Metrics/AggregatorStore.cs

@@ -221,14 +221,7 @@ internal void SnapshotDelta(int indexSnapshot)
                 continue;
             }
 
-            if (this.IsExemplarEnabled())
-            {
-                metricPoint.TakeSnapshotWithExemplar(outputDelta: true);
-            }
-            else
-            {
-                metricPoint.TakeSnapshot(outputDelta: true);
-            }
+            this.TakeMetricPointSnapshot(ref metricPoint, outputDelta: true);
 
             this.currentMetricPointBatch[this.batchSize] = i;
             this.batchSize++;
@@ -246,14 +239,7 @@ internal void SnapshotDeltaWithMetricPointReclaim()
         ref var metricPointWithNoTags = ref this.metricPoints[0];
         if (metricPointWithNoTags.MetricPointStatus != MetricPointStatus.NoCollectPending)
         {
-            if (this.IsExemplarEnabled())
-            {
-                metricPointWithNoTags.TakeSnapshotWithExemplar(outputDelta: true);
-            }
-            else
-            {
-                metricPointWithNoTags.TakeSnapshot(outputDelta: true);
-            }
+            this.TakeMetricPointSnapshot(ref metricPointWithNoTags, outputDelta: true);
 
             this.currentMetricPointBatch[this.batchSize] = 0;
             this.batchSize++;
@@ -265,14 +251,7 @@ internal void SnapshotDeltaWithMetricPointReclaim()
             ref var metricPointForOverflow = ref this.metricPoints[1];
             if (metricPointForOverflow.MetricPointStatus != MetricPointStatus.NoCollectPending)
             {
-                if (this.IsExemplarEnabled())
-                {
-                    metricPointForOverflow.TakeSnapshotWithExemplar(outputDelta: true);
-                }
-                else
-                {
-                    metricPointForOverflow.TakeSnapshot(outputDelta: true);
-                }
+                this.TakeMetricPointSnapshot(ref metricPointForOverflow, outputDelta: true);
 
                 this.currentMetricPointBatch[this.batchSize] = 1;
                 this.batchSize++;
@@ -329,14 +308,7 @@ internal void SnapshotDeltaWithMetricPointReclaim()
                 continue;
             }
 
-            if (this.IsExemplarEnabled())
-            {
-                metricPoint.TakeSnapshotWithExemplar(outputDelta: true);
-            }
-            else
-            {
-                metricPoint.TakeSnapshot(outputDelta: true);
-            }
+            this.TakeMetricPointSnapshot(ref metricPoint, outputDelta: true);
 
             this.currentMetricPointBatch[this.batchSize] = i;
             this.batchSize++;
@@ -358,14 +330,7 @@ internal void SnapshotCumulative(int indexSnapshot)
                 continue;
             }
 
-            if (this.IsExemplarEnabled())
-            {
-                metricPoint.TakeSnapshotWithExemplar(outputDelta: false);
-            }
-            else
-            {
-                metricPoint.TakeSnapshot(outputDelta: false);
-            }
+            this.TakeMetricPointSnapshot(ref metricPoint, outputDelta: false);
 
             this.currentMetricPointBatch[this.batchSize] = i;
             this.batchSize++;
@@ -395,6 +360,18 @@ private static double[] FindDefaultHistogramBounds(in MetricStreamIdentity metri
         return Metric.DefaultHistogramBounds;
     }
 
+    private void TakeMetricPointSnapshot(ref MetricPoint metricPoint, bool outputDelta)
+    {
+        if (this.IsExemplarEnabled())
+        {
+            metricPoint.TakeSnapshotWithExemplar(outputDelta);
+        }
+        else
+        {
+            metricPoint.TakeSnapshot(outputDelta);
+        }
+    }
+
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     private void InitializeZeroTagPointIfNotInitialized()
     {