spring-kafka - Sprint Cloud - Kafka Streams Binder - 测试 KafkaStreamsProcessor
问题描述
我一直在尝试为 KafkaStreamsProcessor 编写单元测试。这是代码处理器代码
@EnableBinding(KafkaStreamsProcessor.class)
public class StockProcessor {
private static final Log LOG = LogFactory.getLog(StockProcessor.class);
@Autowired
private EddieClient client;
@Autowired
private InventoryRepository inventoryRepository;
@Autowired
private PermissionRepository permissionRepository;
/**
* Receive message from input queue
* Apply business logic
* Send to output queue
*
* @param inputMessage the message
* @return outputMessage
*/
@StreamListener(Processor.INPUT)
@SendTo(Processor.OUTPUT)
public KStream<?, OutputMessage> process(KStream<?, InputMessage> inputMessage){
return inputMessage
.map((key, value) -> {
LOG.info("::: processing message...");
// ... business logic
return new KeyValue<>(key, outputMessage);
});
}
}
应用程序.yml
spring:
cloud:
stream:
kafka:
streams:
binder:
brokers:
- ${NX_KAFKA_SERVERS}
bindings:
input:
destination: ${NX_INPUT_TOPIC}
content-type: application/json
group: ${NX_PULL_GROUP_ID}
output:
destination: ${NX_OUTPUT_TOPIC}
content-type: application/json
group: ${NX_PUSH_GROUP_ID}
这是我在单元测试中阅读并尝试做的
public class StockProcessorTest {
private static final String INPUT_TOPIC = "input-topic";
private static final String OUTPUT_TOPIC = "output-topic";
@SpyBean
private StockProcessor stockProcessor;
@MockBean
private EddieClient client;
@MockBean
private InventoryRepository inventoryRepository;
@MockBean
private PermissionRepository permissionRepository;
private TopologyTestDriver topologyTestDriver;
private TestInputTopic<String, InputMessage> inputTopic;
private TestOutputTopic<String, OutputMessage> outputTopic;
private Topology topology;
private Properties config;
KStream<String, InputMessage> inputMessageStream;
KStream<String, OutputMessage> outputMessageStream;
@Before
public void setup() {
config = new Properties();
config.setProperty(StreamsConfig.APPLICATION_ID_CONFIG, "app_id");
config.setProperty(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "foo:1234");
StreamsBuilder streamsBuilder = new StreamsBuilder();
inputMessageStream = streamsBuilder.stream(INPUT_TOPIC);
stockProcessor.process(inputMessageStream).to(OUTPUT_TOPIC);
topology = streamsBuilder.build();
topologyTestDriver = new TopologyTestDriver(topology, config);
//???
}
}
我真的不知道我是否会在这里走上正确的道路。我正在使用杰克逊序列化程序。如何创建 inputTopic 和 outputTopic 并测试我的业务逻辑?
我可以提供任何需要的进一步细节。提前致谢
解决方案
以下是一些关于如何基于 Spring Cloud Stream 对 Kafka Streams 应用程序进行单元测试的示例 - https://github.com/spring-cloud/spring-cloud-stream-samples/blob/master/kafka-streams-samples/kafka -streams-word-count/src/test/java/kafka/streams/word/count/WordCountProcessorApplicationTests.java
此外,这是一个包含一些高级示例的测试套件:https ://github.com/spring-cloud/spring-cloud-stream-samples/tree/master/kafka-streams-samples/kafka-streams-inventory-count /src/test/java/kafka/streams/inventory/count
这些示例详细介绍了如何将 Serdes 与测试驱动程序一起使用。
请检查它们,看看它们是否满足您的测试要求。
推荐阅读
- ruby-on-rails - 如何获取 Active Storage 图片的 url
- ios - 执行时“else”语句未在“didSelectRowAt”函数中运行
- php - 值未使用 php mysql 和 ajax 提交到数据库表
- c# - 在 C# 中存储大字符串(html/xml/js 等)
- java - java.lang.OutOfMemoryError 开发带有 4 张图片的应用程序
- java - 如何在没有 root 的情况下在 Android 上可靠地模拟触摸事件(如 Automate 和 Tasker)?
- javascript - Rails:通过 js / jQuery 脚本更改参数
- multithreading - 同步多个 pthread
- python - 基于 np.array 的移动切片重建 np.array 的有效方法
- node.js - ejs变量增量不起作用