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Sync instrument stress test #7986

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5e46ad6
Add synchronous instrument stress test
jack-berg Jan 16, 2026
e336502
Extend to attributes and delete existing stress tests
jack-berg Jan 16, 2026
2566c09
Add support for expo histogram
jack-berg Jan 19, 2026
08f4855
Slight reworking
jack-berg Jan 21, 2026
03670f6
revert unreleated
jack-berg Jan 21, 2026
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93 changes: 0 additions & 93 deletions sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/SdkDoubleCounterTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,6 @@
import io.opentelemetry.sdk.testing.exporter.InMemoryMetricReader;
import io.opentelemetry.sdk.testing.time.TestClock;
import java.time.Duration;
import java.util.stream.IntStream;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;

Expand Down Expand Up @@ -174,96 +173,4 @@ void doubleCounterAdd_NaN() {
doubleCounter.add(Double.NaN);
assertThat(sdkMeterReader.collectAllMetrics()).hasSize(0);
}

@Test
void stressTest() {
DoubleCounter doubleCounter = sdkMeter.counterBuilder("testCounter").ofDoubles().build();

StressTestRunner.Builder stressTestBuilder =
StressTestRunner.builder().setCollectionIntervalMs(100);

for (int i = 0; i < 4; i++) {
stressTestBuilder.addOperation(
StressTestRunner.Operation.create(
1_000, 1, () -> doubleCounter.add(10, Attributes.builder().put("K", "V").build())));
}

stressTestBuilder.build().run();
assertThat(sdkMeterReader.collectAllMetrics())
.satisfiesExactly(
metric ->
assertThat(metric)
.hasResource(RESOURCE)
.hasInstrumentationScope(INSTRUMENTATION_SCOPE_INFO)
.hasName("testCounter")
.hasDoubleSumSatisfying(
sum ->
sum.isCumulative()
.isMonotonic()
.hasPointsSatisfying(
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(40000)
.hasAttributes(attributeEntry("K", "V")))));
}

@Test
void stressTest_WithDifferentLabelSet() {
String[] keys = {"Key_1", "Key_2", "Key_3", "Key_4"};
String[] values = {"Value_1", "Value_2", "Value_3", "Value_4"};
DoubleCounter doubleCounter = sdkMeter.counterBuilder("testCounter").ofDoubles().build();

StressTestRunner.Builder stressTestBuilder =
StressTestRunner.builder().setCollectionIntervalMs(100);

IntStream.range(0, 4)
.forEach(
i ->
stressTestBuilder.addOperation(
StressTestRunner.Operation.create(
2_000,
1,
() ->
doubleCounter.add(
10, Attributes.builder().put(keys[i], values[i]).build()))));

stressTestBuilder.build().run();
assertThat(sdkMeterReader.collectAllMetrics())
.satisfiesExactly(
metric ->
assertThat(metric)
.hasResource(RESOURCE)
.hasInstrumentationScope(INSTRUMENTATION_SCOPE_INFO)
.hasDoubleSumSatisfying(
sum ->
sum.isCumulative()
.isMonotonic()
.hasPointsSatisfying(
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(20_000)
.hasAttributes(attributeEntry(keys[0], values[0])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(20_000)
.hasAttributes(attributeEntry(keys[1], values[1])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(20_000)
.hasAttributes(attributeEntry(keys[2], values[2])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(20_000)
.hasAttributes(attributeEntry(keys[3], values[3])))));
}
}
95 changes: 0 additions & 95 deletions sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/SdkDoubleGaugeTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,6 @@
import io.opentelemetry.sdk.trace.SdkTracerProvider;
import java.time.Duration;
import java.util.Collections;
import java.util.stream.IntStream;
import org.junit.jupiter.api.Test;

/** Unit tests for {@link SdkDoubleGauge}. */
Expand Down Expand Up @@ -271,98 +270,4 @@ void collectMetrics_WithMultipleCollects() {
.hasValue(222d)
.hasAttributes(attributeEntry("K", "V")))));
}

@Test
void stressTest() {
DoubleGauge doubleGauge = sdkMeter.gaugeBuilder("testGauge").build();

StressTestRunner.Builder stressTestBuilder =
StressTestRunner.builder().setCollectionIntervalMs(100);

for (int i = 0; i < 4; i++) {
stressTestBuilder.addOperation(
StressTestRunner.Operation.create(
1_000,
1,
() -> {
doubleGauge.set(10, Attributes.builder().put("K", "V").build());
doubleGauge.set(11, Attributes.builder().put("K", "V").build());
}));
}

stressTestBuilder.build().run();
assertThat(cumulativeReader.collectAllMetrics())
.satisfiesExactly(
metric ->
assertThat(metric)
.hasResource(RESOURCE)
.hasInstrumentationScope(INSTRUMENTATION_SCOPE_INFO)
.hasName("testGauge")
.hasDoubleGaugeSatisfying(
gauge ->
gauge.hasPointsSatisfying(
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(11)
.hasAttributes(attributeEntry("K", "V")))));
}

@Test
void stressTest_WithDifferentLabelSet() {
String[] keys = {"Key_1", "Key_2", "Key_3", "Key_4"};
String[] values = {"Value_1", "Value_2", "Value_3", "Value_4"};
DoubleGauge doubleGauge = sdkMeter.gaugeBuilder("testGauge").build();

StressTestRunner.Builder stressTestBuilder =
StressTestRunner.builder().setCollectionIntervalMs(100);

IntStream.range(0, 4)
.forEach(
i ->
stressTestBuilder.addOperation(
StressTestRunner.Operation.create(
2_000,
1,
() -> {
doubleGauge.set(10, Attributes.builder().put(keys[i], values[i]).build());
doubleGauge.set(11, Attributes.builder().put(keys[i], values[i]).build());
})));

stressTestBuilder.build().run();
assertThat(cumulativeReader.collectAllMetrics())
.satisfiesExactly(
metric ->
assertThat(metric)
.hasResource(RESOURCE)
.hasInstrumentationScope(INSTRUMENTATION_SCOPE_INFO)
.hasDoubleGaugeSatisfying(
gauge ->
gauge.hasPointsSatisfying(
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(11)
.hasAttributes(attributeEntry(keys[0], values[0])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(11)
.hasAttributes(attributeEntry(keys[1], values[1])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(11)
.hasAttributes(attributeEntry(keys[2], values[2])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasValue(11)
.hasAttributes(attributeEntry(keys[3], values[3])))));
}
}
105 changes: 0 additions & 105 deletions sdk/metrics/src/test/java/io/opentelemetry/sdk/metrics/SdkDoubleHistogramTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,6 @@
import java.time.Duration;
import java.util.Arrays;
import java.util.Collections;
import java.util.stream.IntStream;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;

Expand Down Expand Up @@ -369,108 +368,4 @@ void collectMetrics_ExemplarsWithExplicitBucketHistogram() {
.put("key", "value")
.build())))));
}

@Test
void stressTest() {
DoubleHistogram doubleHistogram = sdkMeter.histogramBuilder("testHistogram").build();

StressTestRunner.Builder stressTestBuilder =
StressTestRunner.builder().setCollectionIntervalMs(100);

for (int i = 0; i < 4; i++) {
stressTestBuilder.addOperation(
StressTestRunner.Operation.create(
1_000,
1,
() -> doubleHistogram.record(10, Attributes.builder().put("K", "V").build())));
}

stressTestBuilder.build().run();
assertThat(sdkMeterReader.collectAllMetrics())
.satisfiesExactly(
metric ->
assertThat(metric)
.hasResource(RESOURCE)
.hasInstrumentationScope(INSTRUMENTATION_SCOPE_INFO)
.hasName("testHistogram")
.hasHistogramSatisfying(
histogram ->
histogram.hasPointsSatisfying(
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasAttributes(attributeEntry("K", "V"))
.hasCount(4_000)
.hasSum(40_000))));
}

@Test
void stressTest_WithDifferentLabelSet() {
String[] keys = {"Key_1", "Key_2", "Key_3", "Key_4"};
String[] values = {"Value_1", "Value_2", "Value_3", "Value_4"};
DoubleHistogram doubleHistogram = sdkMeter.histogramBuilder("testHistogram").build();

StressTestRunner.Builder stressTestBuilder =
StressTestRunner.builder().setCollectionIntervalMs(100);

IntStream.range(0, 4)
.forEach(
i ->
stressTestBuilder.addOperation(
StressTestRunner.Operation.create(
2_000,
1,
() ->
doubleHistogram.record(
10, Attributes.builder().put(keys[i], values[i]).build()))));

stressTestBuilder.build().run();
assertThat(sdkMeterReader.collectAllMetrics())
.satisfiesExactly(
metric ->
assertThat(metric)
.hasResource(RESOURCE)
.hasInstrumentationScope(INSTRUMENTATION_SCOPE_INFO)
.hasName("testHistogram")
.hasHistogramSatisfying(
histogram ->
histogram.hasPointsSatisfying(
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasCount(2_000)
.hasSum(20_000)
.hasBucketCounts(
0, 0, 2000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
.hasAttributes(attributeEntry(keys[0], values[0])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasCount(2_000)
.hasSum(20_000)
.hasBucketCounts(
0, 0, 2000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
.hasAttributes(attributeEntry(keys[1], values[1])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasCount(2_000)
.hasSum(20_000)
.hasBucketCounts(
0, 0, 2000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
.hasAttributes(attributeEntry(keys[2], values[2])),
point ->
point
.hasStartEpochNanos(testClock.now())
.hasEpochNanos(testClock.now())
.hasCount(2_000)
.hasSum(20_000)
.hasBucketCounts(
0, 0, 2000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
.hasAttributes(attributeEntry(keys[3], values[3])))));
}
}
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