/*
* Copyright 2012-2017 the original author or 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 org.springframework.boot.actuate.metrics.export;
import java.util.Arrays;
import java.util.Collections;
import org.junit.Test;
import org.springframework.boot.actuate.metrics.Iterables;
import org.springframework.boot.actuate.metrics.Metric;
import org.springframework.boot.actuate.metrics.repository.InMemoryMultiMetricRepository;
import org.springframework.boot.actuate.metrics.writer.Delta;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link PrefixMetricGroupExporter}.
*
* @author Dave Syer
*/
public class PrefixMetricGroupExporterTests {
private final InMemoryMultiMetricRepository reader = new InMemoryMultiMetricRepository();
private final InMemoryMultiMetricRepository writer = new InMemoryMultiMetricRepository();
private final PrefixMetricGroupExporter exporter = new PrefixMetricGroupExporter(
this.reader, this.writer);
@Test
public void prefixedMetricsCopied() {
this.reader.set("foo", Arrays.<Metric<?>>asList(new Metric<Number>("bar", 2.3),
new Metric<Number>("spam", 1.3)));
this.exporter.setGroups(Collections.singleton("foo"));
this.exporter.export();
assertThat(Iterables.collection(this.writer.groups())).hasSize(1);
}
@Test
public void countersIncremented() {
this.writer.increment("counter.foo", new Delta<>("bar", 1L));
this.reader.set("counter", Collections
.<Metric<?>>singletonList(new Metric<Number>("counter.foo.bar", 1)));
this.exporter.setGroups(Collections.singleton("counter.foo"));
this.exporter.export();
assertThat(this.writer.findAll("counter.foo").iterator().next().getValue())
.isEqualTo(2L);
}
@Test
public void unprefixedMetricsNotCopied() {
this.reader.set("foo", Arrays.<Metric<?>>asList(
new Metric<Number>("foo.bar", 2.3), new Metric<Number>("foo.spam", 1.3)));
this.exporter.setGroups(Collections.singleton("bar"));
this.exporter.export();
assertThat(Iterables.collection(this.writer.groups())).isEmpty();
}
@Test
public void multiMetricGroupsCopiedAsDefault() {
this.reader.set("foo", Arrays.<Metric<?>>asList(new Metric<Number>("bar", 2.3),
new Metric<Number>("spam", 1.3)));
this.exporter.export();
assertThat(this.writer.countGroups()).isEqualTo(1);
assertThat(Iterables.collection(this.writer.findAll("foo"))).hasSize(2);
}
@Test
public void onlyPrefixedMetricsCopied() {
this.reader.set("foo", Arrays.<Metric<?>>asList(
new Metric<Number>("foo.bar", 2.3), new Metric<Number>("foo.spam", 1.3)));
this.reader.set("foobar", Collections
.<Metric<?>>singletonList(new Metric<Number>("foobar.spam", 1.3)));
this.exporter.setGroups(Collections.singleton("foo"));
this.exporter.export();
assertThat(Iterables.collection(this.writer.groups())).hasSize(1);
}
}