adriancole commented on a change in pull request #926: add unit test for
brave-instrumentation-kafka-clients
URL:
https://github.com/apache/incubator-zipkin-brave/pull/926#discussion_r294047134
##########
File path:
instrumentation/kafka-clients/src/test/java/brave/kafka/clients/ITKafkaTracing.java
##########
@@ -114,6 +114,40 @@ public void close() {
if (current != null) current.close();
}
+ @Test
+ public void report_producer_spans_to_queue() throws Exception {
+ String topic1 = testName.getMethodName() + "1";
+
+ producer = createTracingProducer();
+ consumer = kafkaRule.helper().createStringConsumer(); // not traced
+
+ for (int i = 0; i < 2; i++) {
+ producer.send(new ProducerRecord<>(topic1, TEST_KEY, TEST_VALUE)).get();
+ }
+ consumer.subscribe(Collections.singletonList(topic1));
+ ConsumerRecords<String, String> records = consumer.poll(10000);
+ assertThat(producerSpans).hasSize(2);
+ assertThat(records).hasSize(2);
Review comment:
here is ok, just you have a race condition. producerSpans is a blocking
queue. You can use take() to block until the span is around.
```java
ConsumerRecords<String, String> records = consumer.poll(10000);
assertThat(records).hasSize(2);
producerSpans.take();
producerSpans.take();
```
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