我在弄清楚如何测试使用Avro作为消息格式和(融合)架构注册表的Spring Cloud Stream Kafka Streams应用程序时遇到麻烦。
配置可能是这样的:
spring:
application:
name: shipping-service
cloud:
stream:
schema-registry-client:
endpoint: http://localhost:8081
kafka:
streams:
binder:
configuration:
application:
id: shipping-service
default:
key:
serde: org.apache.kafka.common.serialization.Serdes$IntegerSerde
schema:
registry:
url: ${spring.cloud.stream.schema-registry-client.endpoint}
value:
subject:
name:
strategy: io.confluent.kafka.serializers.subject.RecordNameStrategy
bindings:
input:
consumer:
valueSerde: io.confluent.kafka.streams.serdes.avro.SpecificAvroSerde
order:
consumer:
valueSerde: io.confluent.kafka.streams.serdes.avro.GenericAvroSerde
output:
producer:
valueSerde: io.confluent.kafka.streams.serdes.avro.SpecificAvroSerde
bindings:
input:
destination: customer
order:
destination: order
output:
destination: order
server:
port: 8086
logging:
level:
org.springframework.kafka.config: debug
注释:
我想关于Kafka Broker,我应该使用EmbeddedKafkaBroker bean,但是正如您所看到的,它还依赖于应该以某种方式模拟的Schema Registry。怎么样?
答案 0 :(得分:2)
解决这个问题确实很痛苦,但最终我设法使用fluent-kafka-streams-tests使它起作用:
其他依赖项:
.class
关键是将必要的配置设置为系统属性。为此,我创建了一个单独的测试配置类:
testImplementation("org.springframework.kafka:spring-kafka-test")
testImplementation("com.bakdata.fluent-kafka-streams-tests:schema-registry-mock-junit5:2.0.0")
最后是测试类,您现在可以在其中使用KStream处理和利用模拟架构注册表来生成和使用Avro消息:
@Configuration
class KafkaTestConfiguration(private val embeddedKafkaBroker: EmbeddedKafkaBroker) {
private val schemaRegistryMock = SchemaRegistryMock()
@PostConstruct
fun init() {
System.setProperty("spring.kafka.bootstrap-servers", embeddedKafkaBroker.brokersAsString)
System.setProperty("spring.cloud.stream.kafka.streams.binder.brokers", embeddedKafkaBroker.brokersAsString)
schemaRegistryMock.start()
System.setProperty("spring.cloud.stream.schema-registry-client.endpoint", schemaRegistryMock.url)
System.setProperty("spring.cloud.stream.kafka.streams.binder.configuration.schema.registry.url", schemaRegistryMock.url)
}
@Bean
fun schemaRegistryMock(): SchemaRegistryMock {
return schemaRegistryMock
}
@PreDestroy
fun preDestroy() {
schemaRegistryMock.stop()
}
}