feat: add exponential histogram accumulation / aggregator

open-telemetry · Dec 22, 2022 · 3d3b3e0 · 3d3b3e0
1 parent b7ea420
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Showing 9 changed files with 1,799 additions and 5 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -11,7 +11,8 @@ For experimental package changes, see the [experimental CHANGELOG](experimental/
 
 ### :rocket: (Enhancement)
 
-* feat(sdk-metrics): add exponential histogram mapping functions [#3504](https://github.com/open-telemetry/opentelemetry-js/pull/3502) @mwear
+* feat(sdk-metrics): add exponential histogram accumulation / aggregator [#3505](https://github.com/open-telemetry/opentelemetry-js/pull/3505) @mwear
+* feat(sdk-metrics): add exponential histogram mapping functions [#3504](https://github.com/open-telemetry/opentelemetry-js/pull/3504) @mwear
 * feat(api): add `getActiveBaggage` API [#3385](https://github.com/open-telemetry/opentelemetry-js/pull/3385)
 * feat(instrumentation-grpc): set net.peer.name and net.peer.port on client spans [#3430](https://github.com/open-telemetry/opentelemetry-js/pull/3430)
 

diff --git a/experimental/packages/otlp-transformer/src/metrics/internal.ts b/experimental/packages/otlp-transformer/src/metrics/internal.ts
@@ -19,6 +19,7 @@ import {
   AggregationTemporality,
   DataPoint,
   DataPointType,
+  ExponentialHistogram,
   Histogram,
   MetricData,
   ResourceMetrics,
@@ -96,7 +97,10 @@ export function toMetric(metricData: MetricData): IMetric {
 }
 
 function toSingularDataPoint(
-  dataPoint: DataPoint<number> | DataPoint<Histogram>,
+  dataPoint:
+    | DataPoint<number>
+    | DataPoint<Histogram>
+    | DataPoint<ExponentialHistogram>,
   valueType: ValueType
 ) {
   const out: INumberDataPoint = {