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TracingSpringKafkaTest.java
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TracingSpringKafkaTest.java
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/*
* Copyright 2017-2020 The OpenTracing 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.opentracing.contrib.kafka.spring;
import static org.awaitility.Awaitility.await;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.greaterThanOrEqualTo;
import io.opentracing.mock.MockSpan;
import io.opentracing.mock.MockTracer;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.test.rule.EmbeddedKafkaRule;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@ContextConfiguration(classes = {TestConfiguration.class})
public class TracingSpringKafkaTest {
@ClassRule
public static EmbeddedKafkaRule embeddedKafka = new EmbeddedKafkaRule(2, true, 2, "spring");
@Autowired
private MockTracer mockTracer;
@Autowired
private KafkaTemplate<Integer, String> kafkaTemplate;
@Before
public void before() {
mockTracer.reset();
}
@Test
public void test() {
kafkaTemplate.send("spring", "message");
await().atMost(15, TimeUnit.SECONDS).until(reportedSpansSize(), greaterThanOrEqualTo(3));
List<MockSpan> spans = mockTracer.finishedSpans();
assertThat(spans, contains(
new SpanMatcher("To_spring"),
new SpanMatcher("From_spring"),
new SpanMatcher("KafkaListener_spring")));
}
private Callable<Integer> reportedSpansSize() {
return () -> mockTracer.finishedSpans().size();
}
private static class SpanMatcher extends BaseMatcher<MockSpan> {
private final String operationName;
private SpanMatcher(String operationName) {
this.operationName = operationName;
}
@Override
public boolean matches(Object actual) {
return actual instanceof MockSpan && operationName
.equals(((MockSpan) actual).operationName());
}
@Override
public void describeTo(Description description) {
description.appendText(operationName);
}
}
}