/*
* 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.endpoint;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.junit.Test;
import org.springframework.boot.actuate.metrics.Metric;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link MetricsEndpoint}.
*
* @author Phillip Webb
*/
public class MetricsEndpointTests extends AbstractEndpointTests<MetricsEndpoint> {
private Metric<Number> metric1 = new Metric<>("a", 1);
private Metric<Number> metric2 = new Metric<>("b", 2);
private Metric<Number> metric3 = new Metric<>("c", 3);
public MetricsEndpointTests() {
super(Config.class, MetricsEndpoint.class, "metrics", true, "endpoints.metrics");
}
@Test
public void invoke() throws Exception {
assertThat(getEndpointBean().invoke().get("a")).isEqualTo(0.5f);
}
@Test
public void ordered() {
List<PublicMetrics> publicMetrics = new ArrayList<>();
publicMetrics
.add(new TestPublicMetrics(2, this.metric2, this.metric2, this.metric3));
publicMetrics.add(new TestPublicMetrics(1, this.metric1));
Map<String, Object> metrics = new MetricsEndpoint(publicMetrics).invoke();
Iterator<Entry<String, Object>> iterator = metrics.entrySet().iterator();
assertThat(iterator.next().getKey()).isEqualTo("a");
assertThat(iterator.next().getKey()).isEqualTo("b");
assertThat(iterator.next().getKey()).isEqualTo("c");
assertThat(iterator.hasNext()).isFalse();
}
private static class TestPublicMetrics implements PublicMetrics, Ordered {
private final int order;
private final List<Metric<?>> metrics;
TestPublicMetrics(int order, Metric<?>... metrics) {
this.order = order;
this.metrics = Arrays.asList(metrics);
}
@Override
public int getOrder() {
return this.order;
}
@Override
public Collection<Metric<?>> metrics() {
return this.metrics;
}
}
@Configuration
@EnableConfigurationProperties
public static class Config {
@Bean
public MetricsEndpoint endpoint() {
final Metric<Float> metric = new Metric<>("a", 0.5f);
PublicMetrics metrics = new PublicMetrics() {
@Override
public Collection<Metric<?>> metrics() {
return Collections.<Metric<?>>singleton(metric);
}
};
return new MetricsEndpoint(metrics);
}
}
}