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[英]Spring Kafka Template - Connect to Kafka Topic on Spring Boot Startup
[英]How can I interrupt startup spring-boot application if kafka topic name from properties does not exist in kafka?
我嘗試在啟動spring-boot應用程序上檢查Kafka主題。 我想拋出異常並中斷啟動。 這是我的配置:
@Slf4j
@Configuration
public class KafkaTopicConfig implements ApplicationRunner {
private final KafkaAdmin kafkaAdmin;
private final TopicProperties topicProperties;
public KafkaTopicConfig(KafkaAdmin kafkaAdmin, TopicProperties topicProperties) {
this.kafkaAdmin = kafkaAdmin;
this.topicProperties = topicProperties;
}
@Override
public void run(ApplicationArguments args) throws Exception {
AdminClient admin = AdminClient.create(kafkaAdmin.getConfig());
ListTopicsResult listTopicsResult = admin.listTopics();
listTopicsResult.names().whenComplete((existTopics, throwable) -> {
log.info("TOPICS LOAD: {}", existTopics.size());
topicProperties.getTopics().forEach((s, topic) -> {
if (!existTopics.contains(topic))
throw new IllegalStateException("Topic with name: " + topic + " not found in kafka.");
});
});
}
}
但拋出后拋出throw new IllegalStateException("Topic with name: " + topic + " not found in kafka.");
此異常被忽略,應用程序繼續工作。
而不是ApplicationRunner
,使用SmartLifecycle
autoStartup=true
實現SmartLifecycle
並將您的邏輯放在start()
。
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