[backport/v1.x] fix(exporter-metrics-otlp-http): browser OTLPMetricEx…

…porter was not passing config to OTLPMetricExporterBase super class [#5331] (#5337)

Co-authored-by: Trent Mick <trentm@gmail.com>

experimental/CHANGELOG.md

@@ -11,6 +11,8 @@ All notable changes to experimental packages in this project will be documented
 
 ### :bug: (Bug Fix)
 
+* fix(exporter-metrics-otlp-http): browser OTLPMetricExporter was not passing config to OTLPMetricExporterBase super class [#5331](/~https://github.com/open-telemetry/opentelemetry-js/pull/5331) @trentm
+
 ### :books: (Refine Doc)
 
 ### :house: (Internal)

experimental/packages/opentelemetry-exporter-metrics-otlp-http/src/platform/browser/OTLPMetricExporter.ts

@@ -31,7 +31,8 @@ export class OTLPMetricExporter extends OTLPMetricExporterBase {
         JsonMetricsSerializer,
         'v1/metrics',
         { 'Content-Type': 'application/json' }
-      )
+      ),
+      config
     );
   }
 }

experimental/packages/opentelemetry-exporter-metrics-otlp-http/test/browser/OTLPMetricExporter.test.ts

@@ -14,7 +14,12 @@
  * limitations under the License.
  */
 
+import { AggregationTemporalityPreference } from '../../src';
 import {
+  Aggregation,
+  AggregationTemporality,
+  ExplicitBucketHistogramAggregation,
+  InstrumentType,
   MeterProvider,
   PeriodicExportingMetricReader,
 } from '@opentelemetry/sdk-metrics';
@@ -105,4 +110,139 @@ describe('OTLPMetricExporter', function () {
       });
     });
   });
+
+  describe('temporality', () => {
+    it('should use the right temporality when Cumulative preference is selected', () => {
+      const exporter = new OTLPMetricExporter({
+        temporalityPreference: AggregationTemporalityPreference.CUMULATIVE,
+      });
+
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.COUNTER),
+        AggregationTemporality.CUMULATIVE,
+        'Counter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.HISTOGRAM),
+        AggregationTemporality.CUMULATIVE,
+        'Histogram'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.UP_DOWN_COUNTER),
+        AggregationTemporality.CUMULATIVE,
+        'UpDownCounter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(
+          InstrumentType.OBSERVABLE_COUNTER
+        ),
+        AggregationTemporality.CUMULATIVE,
+        'Asynchronous Counter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(
+          InstrumentType.OBSERVABLE_UP_DOWN_COUNTER
+        ),
+        AggregationTemporality.CUMULATIVE,
+        'Asynchronous UpDownCounter'
+      );
+    });
+
+    it('should use the right temporality when Delta preference is selected', () => {
+      const exporter = new OTLPMetricExporter({
+        temporalityPreference: AggregationTemporalityPreference.DELTA,
+      });
+
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.COUNTER),
+        AggregationTemporality.DELTA,
+        'Counter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.HISTOGRAM),
+        AggregationTemporality.DELTA,
+        'Histogram'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.UP_DOWN_COUNTER),
+        AggregationTemporality.CUMULATIVE,
+        'UpDownCounter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(
+          InstrumentType.OBSERVABLE_COUNTER
+        ),
+        AggregationTemporality.DELTA,
+        'Asynchronous Counter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(
+          InstrumentType.OBSERVABLE_UP_DOWN_COUNTER
+        ),
+        AggregationTemporality.CUMULATIVE,
+        'Asynchronous UpDownCounter'
+      );
+    });
+
+    it('should use the right temporality when LowMemory preference is selected', () => {
+      const exporter = new OTLPMetricExporter({
+        temporalityPreference: AggregationTemporalityPreference.LOWMEMORY,
+      });
+
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.COUNTER),
+        AggregationTemporality.DELTA,
+        'Counter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.HISTOGRAM),
+        AggregationTemporality.DELTA,
+        'Histogram'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(InstrumentType.UP_DOWN_COUNTER),
+        AggregationTemporality.CUMULATIVE,
+        'UpDownCounter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(
+          InstrumentType.OBSERVABLE_COUNTER
+        ),
+        AggregationTemporality.CUMULATIVE,
+        'Asynchronous Counter'
+      );
+      assert.equal(
+        exporter.selectAggregationTemporality(
+          InstrumentType.OBSERVABLE_UP_DOWN_COUNTER
+        ),
+        AggregationTemporality.CUMULATIVE,
+        'Asynchronous UpDownCounter'
+      );
+    });
+  });
+
+  describe('aggregation', () => {
+    it('aggregationSelector calls the selector supplied to the constructor', () => {
+      const aggregation: Aggregation = new ExplicitBucketHistogramAggregation([
+        0, 100, 100000,
+      ]);
+      const exporter = new OTLPMetricExporter({
+        aggregationPreference: _instrumentType => aggregation,
+      });
+      assert.equal(
+        exporter.selectAggregation(InstrumentType.COUNTER),
+        aggregation
+      );
+    });
+
+    it('aggregationSelector returns the default aggregation preference when nothing is supplied', () => {
+      const exporter = new OTLPMetricExporter({
+        aggregationPreference: _instrumentType => Aggregation.Default(),
+      });
+      assert.deepStrictEqual(
+        exporter.selectAggregation(InstrumentType.COUNTER),
+        Aggregation.Default()
+      );
+    });
+  });
 });