Question

我正在尝试将Kafka用作我的控制器中的消息队列（所以任务）：

@RequestMapping("users")
@RestController
public class UserController extends BaseController {

    private static final String KAFKA_TOPIC = "virto_users";

    @Autowired
    private KafkaTemplate<String, String> mKafkaTemplate;

    @PutMapping(value = "{id}")
    public ResponseEntity<String> put(@PathVariable UUID id,
                                      @RequestBody String profile) {
        String url = ServerConfig.USERS_HOST + "/users/" + id;
        ResponseEntity<String> entity = request.put(url, profile);
        HttpStatus status = entity.getStatusCode();

        if (status == HttpStatus.CREATED || status == HttpStatus.NO_CONTENT) {
            return entity;
        }

        JSONObject json = new JSONObject();
        json.put("id", id);
        json.put("profile", profile);
        sendMessage(json.toString());

        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
    }

    public void sendMessage(String msg) {
        mKafkaTemplate.send(KAFKA_TOPIC, msg);
    }

    @KafkaListener(topics = KAFKA_TOPIC, groupId = KafkaConfig.GROUP_ID)
    public void listen(String message) {
        JSONObject json = new JSONObject(message);
        UUID id = UUID.fromString(json.getString("id"));
        String profile = json.getString("profile");
        put(id, profile);
    }
}

如果我的内部服务可用并返回CREATED或NO_CONTENT，那么一切正确，我可以返回结果，否则我需要返回NO_CONTENT状态并将此消息放入我的队列中再次尝试直到它将被处理。我就像上面那样做了，但它看起来不是一个好的解决方案，imho。我想问一些建议，我该如何改进这个解决方案，或者它是正常的。

使用kafka作为消息队列

0 个答案: