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/*
* Copyright 2018, 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.implcore.stats;
import static com.google.common.truth.Truth.assertThat;
import io.opencensus.common.Duration;
import io.opencensus.common.Timestamp;
import io.opencensus.implcore.stats.MutableAggregation.MutableCount;
import io.opencensus.implcore.stats.MutableAggregation.MutableDistribution;
import io.opencensus.implcore.stats.MutableAggregation.MutableLastValue;
import io.opencensus.implcore.stats.MutableAggregation.MutableMean;
import io.opencensus.implcore.stats.MutableAggregation.MutableSum;
import io.opencensus.metrics.Distribution.Bucket;
import io.opencensus.metrics.LabelKey;
import io.opencensus.metrics.LabelValue;
import io.opencensus.metrics.MetricDescriptor;
import io.opencensus.metrics.MetricDescriptor.Type;
import io.opencensus.metrics.Point;
import io.opencensus.metrics.Value;
import io.opencensus.stats.Aggregation.Count;
import io.opencensus.stats.Aggregation.Distribution;
import io.opencensus.stats.Aggregation.LastValue;
import io.opencensus.stats.Aggregation.Mean;
import io.opencensus.stats.Aggregation.Sum;
import io.opencensus.stats.BucketBoundaries;
import io.opencensus.stats.Measure.MeasureDouble;
import io.opencensus.stats.Measure.MeasureLong;
import io.opencensus.stats.View;
import io.opencensus.stats.View.AggregationWindow.Interval;
import io.opencensus.stats.View.Name;
import io.opencensus.tags.TagKey;
import io.opencensus.tags.TagValue;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link MetricUtils}. */
@RunWith(JUnit4.class)
public class MetricUtilsTest {
private static final TagKey KEY = TagKey.create("KEY");
private static final TagValue VALUE = TagValue.create("VALUE");
private static final TagValue VALUE_2 = TagValue.create("VALUE_2");
private static final String MEASURE_NAME = "my measurement";
private static final String MEASURE_NAME_2 = "my measurement 2";
private static final String MEASURE_UNIT = "us";
private static final String MEASURE_DESCRIPTION = "measure description";
private static final MeasureDouble MEASURE_DOUBLE =
MeasureDouble.create(MEASURE_NAME, MEASURE_DESCRIPTION, MEASURE_UNIT);
private static final MeasureLong MEASURE_LONG =
MeasureLong.create(MEASURE_NAME_2, MEASURE_DESCRIPTION, MEASURE_UNIT);
private static final Name VIEW_NAME = Name.create("my view");
private static final Name VIEW_NAME_2 = Name.create("my view 2");
private static final String VIEW_DESCRIPTION = "view description";
private static final Duration TEN_SECONDS = Duration.create(10, 0);
private static final Interval INTERVAL = Interval.create(TEN_SECONDS);
private static final BucketBoundaries BUCKET_BOUNDARIES =
BucketBoundaries.create(Arrays.asList(-10.0, 0.0, 10.0));
private static final Sum SUM = Sum.create();
private static final Count COUNT = Count.create();
private static final Mean MEAN = Mean.create();
private static final Distribution DISTRIBUTION = Distribution.create(BUCKET_BOUNDARIES);
private static final LastValue LAST_VALUE = LastValue.create();
private static final View VIEW_1 =
View.create(
VIEW_NAME, VIEW_DESCRIPTION, MEASURE_DOUBLE, LAST_VALUE, Collections.singletonList(KEY));
private static final View VIEW_2 =
View.create(
VIEW_NAME_2,
VIEW_DESCRIPTION,
MEASURE_DOUBLE,
MEAN,
Collections.singletonList(KEY),
INTERVAL);
private static final Timestamp TIMESTAMP = Timestamp.fromMillis(1000);
@Test
public void viewToMetricDescriptor() {
MetricDescriptor metricDescriptor = MetricUtils.viewToMetricDescriptor(VIEW_1);
assertThat(metricDescriptor).isNotNull();
assertThat(metricDescriptor.getName()).isEqualTo(VIEW_NAME.asString());
assertThat(metricDescriptor.getUnit()).isEqualTo(MEASURE_UNIT);
assertThat(metricDescriptor.getType()).isEqualTo(Type.GAUGE_DOUBLE);
assertThat(metricDescriptor.getDescription()).isEqualTo(VIEW_DESCRIPTION);
assertThat(metricDescriptor.getLabelKeys()).containsExactly(LabelKey.create(KEY.getName(), ""));
}
@Test
public void viewToMetricDescriptor_NoIntervalViews() {
MetricDescriptor metricDescriptor = MetricUtils.viewToMetricDescriptor(VIEW_2);
assertThat(metricDescriptor).isNull();
}
@Test
public void getType() {
assertThat(MetricUtils.getType(MEASURE_DOUBLE, LAST_VALUE)).isEqualTo(Type.GAUGE_DOUBLE);
assertThat(MetricUtils.getType(MEASURE_LONG, LAST_VALUE)).isEqualTo(Type.GAUGE_INT64);
assertThat(MetricUtils.getType(MEASURE_DOUBLE, SUM)).isEqualTo(Type.CUMULATIVE_DOUBLE);
assertThat(MetricUtils.getType(MEASURE_LONG, SUM)).isEqualTo(Type.CUMULATIVE_INT64);
assertThat(MetricUtils.getType(MEASURE_DOUBLE, MEAN)).isEqualTo(Type.CUMULATIVE_DOUBLE);
assertThat(MetricUtils.getType(MEASURE_LONG, MEAN)).isEqualTo(Type.CUMULATIVE_DOUBLE);
assertThat(MetricUtils.getType(MEASURE_DOUBLE, COUNT)).isEqualTo(Type.CUMULATIVE_INT64);
assertThat(MetricUtils.getType(MEASURE_LONG, COUNT)).isEqualTo(Type.CUMULATIVE_INT64);
assertThat(MetricUtils.getType(MEASURE_DOUBLE, DISTRIBUTION))
.isEqualTo(Type.CUMULATIVE_DISTRIBUTION);
assertThat(MetricUtils.getType(MEASURE_LONG, DISTRIBUTION))
.isEqualTo(Type.CUMULATIVE_DISTRIBUTION);
}
@Test
public void tagValuesToLabelValues() {
List<TagValue> tagValues = Arrays.asList(VALUE, VALUE_2, null);
assertThat(MetricUtils.tagValuesToLabelValues(tagValues))
.containsExactly(
LabelValue.create(VALUE.asString()),
LabelValue.create(VALUE_2.asString()),
LabelValue.create(null));
}
@Test
public void mutableAggregationToPoint() {
MutableSum sum = MutableSum.create();
MutableCount count = MutableCount.create();
MutableMean mean = MutableMean.create();
MutableLastValue lastValue = MutableLastValue.create();
MutableDistribution distribution = MutableDistribution.create(BUCKET_BOUNDARIES);
assertThat(MetricUtils.mutableAggregationToPoint(sum, TIMESTAMP, Type.CUMULATIVE_INT64))
.isEqualTo(Point.create(Value.longValue(0), TIMESTAMP));
assertThat(MetricUtils.mutableAggregationToPoint(sum, TIMESTAMP, Type.CUMULATIVE_DOUBLE))
.isEqualTo(Point.create(Value.doubleValue(0), TIMESTAMP));
assertThat(MetricUtils.mutableAggregationToPoint(count, TIMESTAMP, Type.CUMULATIVE_INT64))
.isEqualTo(Point.create(Value.longValue(0), TIMESTAMP));
assertThat(MetricUtils.mutableAggregationToPoint(mean, TIMESTAMP, Type.CUMULATIVE_DOUBLE))
.isEqualTo(Point.create(Value.doubleValue(0), TIMESTAMP));
assertThat(MetricUtils.mutableAggregationToPoint(lastValue, TIMESTAMP, Type.GAUGE_DOUBLE))
.isEqualTo(Point.create(Value.doubleValue(Double.NaN), TIMESTAMP));
assertThat(MetricUtils.mutableAggregationToPoint(lastValue, TIMESTAMP, Type.GAUGE_INT64))
.isEqualTo(Point.create(Value.longValue(0), TIMESTAMP));
assertThat(MetricUtils.mutableAggregationToPoint(distribution, TIMESTAMP, Type.GAUGE_DOUBLE))
.isEqualTo(
Point.create(
Value.distributionValue(
io.opencensus.metrics.Distribution.create(
0,
0,
0,
Arrays.asList(-10.0, 0.0, 10.0),
Arrays.asList(
Bucket.create(0),
Bucket.create(0),
Bucket.create(0),
Bucket.create(0)))),
TIMESTAMP));
}
}
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