forked from micrometer-metrics/micrometer
/
CloudWatchMeterRegistryTest.java
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/
CloudWatchMeterRegistryTest.java
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/**
* Copyright 2017 Pivotal Software, Inc.
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* https://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micrometer.cloudwatch2;
import io.micrometer.core.instrument.*;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import software.amazon.awssdk.services.cloudwatch.model.MetricDatum;
import software.amazon.awssdk.services.cloudwatch.model.StandardUnit;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Predicate;
import java.util.function.Supplier;
import java.util.stream.Stream;
import static org.assertj.core.api.Assertions.assertThat;
import static io.micrometer.core.instrument.Meter.Id;
import static io.micrometer.core.instrument.Meter.Type;
import static io.micrometer.core.instrument.Meter.Type.DISTRIBUTION_SUMMARY;
import static io.micrometer.core.instrument.Meter.Type.TIMER;
import static org.mockito.Mockito.*;
/**
* Tests for {@link CloudWatchMeterRegistry}.
*
* @author Johnny Lim
*/
class CloudWatchMeterRegistryTest {
private static final String METER_NAME = "test";
private final CloudWatchConfig config = new CloudWatchConfig() {
@Override
public String get(String key) {
return null;
}
@Override
public String namespace() {
return "namespace";
}
};
private final MockClock clock = new MockClock();
private final CloudWatchMeterRegistry registry = spy(new CloudWatchMeterRegistry(config, clock, null));
private CloudWatchMeterRegistry.Batch registryBatch = registry.new Batch();
@Test
void metricData() {
registry.gauge("gauge", 1d);
List<MetricDatum> metricDatumStream = registry.metricData();
assertThat(metricDatumStream.size()).isEqualTo(1);
}
@Test
void metricDataWhenNaNShouldNotAdd() {
registry.gauge("gauge", Double.NaN);
AtomicReference<Double> value = new AtomicReference<>(Double.NaN);
registry.more().timeGauge("time.gauge", Tags.empty(), value, TimeUnit.MILLISECONDS, AtomicReference::get);
List<MetricDatum> metricDatumStream = registry.metricData();
assertThat(metricDatumStream.size()).isEqualTo(0);
}
@Test
void batchGetMetricName() {
Id id = new Id("name", Tags.empty(), null, null, Type.COUNTER);
assertThat(registry.new Batch().getMetricName(id, "suffix")).isEqualTo("name.suffix");
}
@Test
void batchGetMetricNameWhenSuffixIsNullShouldNotAppend() {
Id id = new Id("name", Tags.empty(), null, null, Type.COUNTER);
assertThat(registry.new Batch().getMetricName(id, null)).isEqualTo("name");
}
@Test
void batchFunctionCounterData() {
FunctionCounter counter = FunctionCounter.builder("myCounter", 1d, Number::doubleValue).register(registry);
clock.add(config.step());
assertThat(registry.new Batch().functionCounterData(counter)).hasSize(1);
}
@Test
void batchFunctionCounterDataShouldClampInfiniteValues() {
FunctionCounter counter = FunctionCounter.builder("my.positive.infinity", Double.POSITIVE_INFINITY, Number::doubleValue).register(registry);
clock.add(config.step());
assertThat(registry.new Batch().functionCounterData(counter).findFirst().get().value())
.isEqualTo(1.174271e+108);
counter = FunctionCounter.builder("my.negative.infinity", Double.NEGATIVE_INFINITY, Number::doubleValue).register(registry);
clock.add(config.step());
assertThat(registry.new Batch().functionCounterData(counter).findFirst().get().value())
.isEqualTo(-1.174271e+108);
}
@Test
void writeMeterWhenCustomMeterHasOnlyNaNValuesShouldNotBeWritten() {
Measurement measurement = new Measurement(() -> Double.NaN, Statistic.VALUE);
List<Measurement> measurements = Arrays.asList(measurement);
Meter meter = Meter.builder("my.meter", Meter.Type.GAUGE, measurements).register(this.registry);
assertThat(registry.new Batch().metricData(meter)).isEmpty();
}
@Test
void writeMeterWhenCustomMeterHasMixedNaNAndNonNaNValuesShouldSkipOnlyNaNValues() {
Measurement measurement1 = new Measurement(() -> Double.NaN, Statistic.VALUE);
Measurement measurement2 = new Measurement(() -> 1d, Statistic.VALUE);
Measurement measurement3 = new Measurement(() -> 2d, Statistic.VALUE);
List<Measurement> measurements = Arrays.asList(measurement1, measurement2, measurement3);
Meter meter = Meter.builder("my.meter", Meter.Type.GAUGE, measurements).register(this.registry);
assertThat(registry.new Batch().metricData(meter)).hasSize(2);
}
@Test
void shouldAddFunctionTimerAggregateMetricWhenAtLeastOneEventHappened() {
FunctionTimer timer = mock(FunctionTimer.class);
Id meterId = new Id(METER_NAME, Tags.empty(), null, null, TIMER);
when(timer.getId()).thenReturn(meterId);
when(timer.count()).thenReturn(2.0);
Stream<MetricDatum> metricDatumStream = registryBatch.functionTimerData(timer);
assertThat(metricDatumStream.anyMatch(hasAvgMetric(meterId))).isTrue();
}
@Test
void shouldNotAddFunctionTimerAggregateMetricWhenNoEventHappened() {
FunctionTimer timer = mock(FunctionTimer.class);
Id meterId = new Id(METER_NAME, Tags.empty(), null, null, TIMER);
when(timer.getId()).thenReturn(meterId);
when(timer.count()).thenReturn(0.0);
Stream<MetricDatum> metricDatumStream = registryBatch.functionTimerData(timer);
assertThat(metricDatumStream.noneMatch(hasAvgMetric(meterId))).isTrue();
}
@Test
void shouldAddTimerAggregateMetricWhenAtLeastOneEventHappened() {
Timer timer = mock(Timer.class);
Id meterId = new Id(METER_NAME, Tags.empty(), null, null, TIMER);
when(timer.getId()).thenReturn(meterId);
when(timer.count()).thenReturn(2L);
Supplier<Stream<MetricDatum>> streamSupplier = () -> registryBatch.timerData(timer);
assertThat(streamSupplier.get().anyMatch(hasAvgMetric(meterId))).isTrue();
assertThat(streamSupplier.get().anyMatch(hasMaxMetric(meterId))).isTrue();
}
@Test
void shouldNotAddTimerAggregateMetricWhenNoEventHappened() {
Timer timer = mock(Timer.class);
Id meterId = new Id(METER_NAME, Tags.empty(), null, null, TIMER);
when(timer.getId()).thenReturn(meterId);
when(timer.count()).thenReturn(0L);
Supplier<Stream<MetricDatum>> streamSupplier = () -> registryBatch.timerData(timer);
assertThat(streamSupplier.get().noneMatch(hasAvgMetric(meterId))).isTrue();
assertThat(streamSupplier.get().noneMatch(hasMaxMetric(meterId))).isTrue();
}
@Test
void shouldAddDistributionSumAggregateMetricWhenAtLeastOneEventHappened() {
DistributionSummary summary = mock(DistributionSummary.class);
Id meterId = new Id(METER_NAME, Tags.empty(), null, null, DISTRIBUTION_SUMMARY);
when(summary.getId()).thenReturn(meterId);
when(summary.count()).thenReturn(2L);
Supplier<Stream<MetricDatum>> streamSupplier = () -> registryBatch.summaryData(summary);
assertThat(streamSupplier.get().anyMatch(hasAvgMetric(meterId))).isTrue();
assertThat(streamSupplier.get().anyMatch(hasMaxMetric(meterId))).isTrue();
}
@Test
void shouldNotAddDistributionSumAggregateMetricWhenNoEventHappened() {
DistributionSummary summary = mock(DistributionSummary.class);
Id meterId = new Id(METER_NAME, Tags.empty(), null, null, DISTRIBUTION_SUMMARY);
when(summary.getId()).thenReturn(meterId);
when(summary.count()).thenReturn(0L);
Supplier<Stream<MetricDatum>> streamSupplier = () -> registryBatch.summaryData(summary);
assertThat(streamSupplier.get().noneMatch(hasAvgMetric(meterId))).isTrue();
assertThat(streamSupplier.get().noneMatch(hasMaxMetric(meterId))).isTrue();
}
@Test
void batchSizeShouldWorkOnMetricDatum() throws InterruptedException {
List<Meter> meters = new ArrayList<>();
for (int i = 0; i < 20; i++) {
Timer timer = Timer.builder("timer." + i).register(this.registry);
meters.add(timer);
}
when(this.registry.getMeters()).thenReturn(meters);
doNothing().when(this.registry).sendMetricData(any());
this.registry.publish();
@SuppressWarnings("unchecked")
ArgumentCaptor<List<MetricDatum>> argumentCaptor = ArgumentCaptor.forClass(List.class);
verify(this.registry, times(2)).sendMetricData(argumentCaptor.capture());
List<List<MetricDatum>> allValues = argumentCaptor.getAllValues();
assertThat(allValues.get(0)).hasSize(20);
assertThat(allValues.get(1)).hasSize(20);
}
@Test
void batchToStandardUnitWhenUnitIsUnknownShouldReturnNone() {
assertThat(this.registry.new Batch().toStandardUnit("unknownUnit")).isEqualTo(StandardUnit.NONE);
}
private Predicate<MetricDatum> hasAvgMetric(Id id) {
return e -> e.metricName().equals(id.getName().concat(".avg"));
}
private Predicate<MetricDatum> hasMaxMetric(Id id) {
return e -> e.metricName().equals(id.getName().concat(".max"));
}
}