/* * Copyright 2019, OpenCensus Authors * * 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 * * http://www.apache.org/licenses/LICENSE-2.0 * * 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.opencensus.exporter.metrics.util; import static com.google.common.truth.Truth.assertThat; import static java.util.concurrent.TimeUnit.MILLISECONDS; import static org.mockito.Mockito.when; import io.opencensus.common.Duration; import io.opencensus.common.Timestamp; import io.opencensus.metrics.LabelKey; import io.opencensus.metrics.LabelValue; import io.opencensus.metrics.export.Metric; import io.opencensus.metrics.export.MetricDescriptor.Type; import io.opencensus.metrics.export.MetricProducer; import io.opencensus.metrics.export.MetricProducerManager; import io.opencensus.metrics.export.Point; import io.opencensus.metrics.export.Value; import java.util.Collections; import java.util.HashSet; import java.util.List; import java.util.Set; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.junit.runners.JUnit4; import org.mockito.Mock; import org.mockito.MockitoAnnotations; /** Unit tests for {@link IntervalMetricReader}. */ @RunWith(JUnit4.class) public class IntervalMetricReaderTest { private static final String METRIC_NAME = "my metric"; private static final String METRIC_DESCRIPTION = "metric description"; private static final String METRIC_UNIT = "us"; private static final List<LabelKey> LABEL_KEY = Collections.singletonList(LabelKey.create("KEY", "key description")); private static final List<LabelValue> LABEL_VALUE = Collections.singletonList(LabelValue.create("VALUE")); private static final io.opencensus.metrics.export.MetricDescriptor METRIC_DESCRIPTOR = io.opencensus.metrics.export.MetricDescriptor.create( METRIC_NAME, METRIC_DESCRIPTION, METRIC_UNIT, Type.CUMULATIVE_INT64, LABEL_KEY); private static final Value VALUE_LONG = Value.longValue(12345678); private static final Timestamp TIMESTAMP = Timestamp.fromMillis(3000); private static final Timestamp TIMESTAMP_2 = Timestamp.fromMillis(1000); private static final Point POINT = Point.create(VALUE_LONG, TIMESTAMP); private static final io.opencensus.metrics.export.TimeSeries CUMULATIVE_TIME_SERIES = io.opencensus.metrics.export.TimeSeries.createWithOnePoint(LABEL_VALUE, POINT, TIMESTAMP_2); private static final Metric METRIC = Metric.createWithOneTimeSeries(METRIC_DESCRIPTOR, CUMULATIVE_TIME_SERIES); @Mock private MetricProducerManager metricProducerManager; @Mock private MetricProducer metricProducer; @Before public void setUp() { MockitoAnnotations.initMocks(this); Set<MetricProducer> metricProducerSet = new HashSet<>(); metricProducerSet.add(metricProducer); when(metricProducer.getMetrics()).thenReturn(Collections.singletonList(METRIC)); when(metricProducerManager.getAllMetricProducer()).thenReturn(metricProducerSet); } @Test public void testConstants() { assertThat(IntervalMetricReader.DEFAULT_INTERVAL).isEqualTo(Duration.create(60, 0)); } @Test public void intervalExport() { FakeMetricExporter fakeMetricExporter = new FakeMetricExporter(); IntervalMetricReader intervalMetricReader = IntervalMetricReader.create( fakeMetricExporter, MetricReader.create( MetricReader.Options.builder() .setMetricProducerManager(metricProducerManager) .build()), IntervalMetricReader.Options.builder() .setExportInterval(Duration.create(0, (int) MILLISECONDS.toNanos(100))) .build()); assertThat(fakeMetricExporter.waitForNumberOfExports(1)) .containsExactly(Collections.singletonList(METRIC)); assertThat(fakeMetricExporter.waitForNumberOfExports(2)) .containsExactly(Collections.singletonList(METRIC), Collections.singletonList(METRIC)); intervalMetricReader.stop(); } @Test public void exportAfterStop() { FakeMetricExporter fakeMetricExporter = new FakeMetricExporter(); IntervalMetricReader intervalMetricReader = IntervalMetricReader.create( fakeMetricExporter, MetricReader.create( MetricReader.Options.builder() .setMetricProducerManager(metricProducerManager) .build()), IntervalMetricReader.Options.builder() .setExportInterval(Duration.create(10, 0)) .build()); // Rely that this will be called in less than 10 seconds. intervalMetricReader.stop(); assertThat(fakeMetricExporter.waitForNumberOfExports(1)) .containsExactly(Collections.singletonList(METRIC)); } }