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[exporters] Native Marshallers should always write SUM #8107

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[exporters] Native Marshallers should always write SUM #8107

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4 changes: 2 additions & 2 deletions .../opentelemetry/exporter/internal/otlp/metrics/ExponentialHistogramDataPointMarshaler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ protected void writeTo(Serializer output) throws IOException {
output.serializeFixed64(ExponentialHistogramDataPoint.START_TIME_UNIX_NANO, startTimeUnixNano);
output.serializeFixed64(ExponentialHistogramDataPoint.TIME_UNIX_NANO, timeUnixNano);
output.serializeFixed64(ExponentialHistogramDataPoint.COUNT, count);
output.serializeDouble(ExponentialHistogramDataPoint.SUM, sum);
output.serializeDoubleOptional(ExponentialHistogramDataPoint.SUM, sum);
if (hasMin) {
output.serializeDoubleOptional(ExponentialHistogramDataPoint.MIN, min);
}
Expand Down Expand Up @@ -161,7 +161,7 @@ private static int calculateSize(
size += MarshalerUtil.sizeFixed64(ExponentialHistogramDataPoint.TIME_UNIX_NANO, timeUnixNano);
size += MarshalerUtil.sizeSInt32(ExponentialHistogramDataPoint.SCALE, scale);
size += MarshalerUtil.sizeFixed64(ExponentialHistogramDataPoint.COUNT, count);
size += MarshalerUtil.sizeDouble(ExponentialHistogramDataPoint.SUM, sum);
size += MarshalerUtil.sizeDoubleOptional(ExponentialHistogramDataPoint.SUM, sum);
if (hasMin) {
size += MarshalerUtil.sizeDoubleOptional(ExponentialHistogramDataPoint.MIN, min);
}
Expand Down
4 changes: 2 additions & 2 deletions ...metry/exporter/internal/otlp/metrics/ExponentialHistogramDataPointStatelessMarshaler.java
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Expand Up @@ -31,7 +31,7 @@ public void writeTo(
ExponentialHistogramDataPoint.START_TIME_UNIX_NANO, point.getStartEpochNanos());
output.serializeFixed64(ExponentialHistogramDataPoint.TIME_UNIX_NANO, point.getEpochNanos());
output.serializeFixed64(ExponentialHistogramDataPoint.COUNT, point.getCount());
output.serializeDouble(ExponentialHistogramDataPoint.SUM, point.getSum());
output.serializeDoubleOptional(ExponentialHistogramDataPoint.SUM, point.getSum());
if (point.hasMin()) {
output.serializeDoubleOptional(ExponentialHistogramDataPoint.MIN, point.getMin());
}
Expand Down Expand Up @@ -73,7 +73,7 @@ public int getBinarySerializedSize(
MarshalerUtil.sizeFixed64(
ExponentialHistogramDataPoint.TIME_UNIX_NANO, point.getEpochNanos());
size += MarshalerUtil.sizeFixed64(ExponentialHistogramDataPoint.COUNT, point.getCount());
size += MarshalerUtil.sizeDouble(ExponentialHistogramDataPoint.SUM, point.getSum());
size += MarshalerUtil.sizeDoubleOptional(ExponentialHistogramDataPoint.SUM, point.getSum());
if (point.hasMin()) {
size += MarshalerUtil.sizeDoubleOptional(ExponentialHistogramDataPoint.MIN, point.getMin());
}
Expand Down
36 changes: 36 additions & 0 deletions ...est/java/io/opentelemetry/exporter/internal/otlp/metrics/MetricsRequestMarshalerTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -531,6 +531,42 @@ void exponentialHistogramDataPoints(MarshalerSource marshalerSource) {
.build());
}

@ParameterizedTest
@EnumSource(MarshalerSource.class)
void exponentialHistogramZeroSum(MarshalerSource marshalerSource) {
assertThat(
toExponentialHistogramDataPoints(
marshalerSource,
ImmutableList.of(
ImmutableExponentialHistogramPointData.create(
0,
0,
0,
/* hasMin= */ false,
0,
/* hasMax= */ false,
0,
ImmutableExponentialHistogramBuckets.create(0, 0, Collections.emptyList()),
ImmutableExponentialHistogramBuckets.create(0, 0, Collections.emptyList()),
123,
456,
Attributes.empty(),
Collections.emptyList()))))
.containsExactly(
ExponentialHistogramDataPoint.newBuilder()
.setStartTimeUnixNano(123)
.setTimeUnixNano(456)
.setCount(0)
.setScale(0)
.setSum(0)
.setZeroCount(0)
.setPositive(
ExponentialHistogramDataPoint.Buckets.newBuilder().setOffset(0)) // no buckets
.setNegative(
ExponentialHistogramDataPoint.Buckets.newBuilder().setOffset(0)) // no buckets
.build());
}

@SuppressWarnings("PointlessArithmeticExpression")
@ParameterizedTest
@EnumSource(MarshalerSource.class)
Expand Down
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