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@Service
public class KafkaProducerService {
private final KafkaTemplate<String, Object> kafkaTemplate;
private final ObjectMapper objectMapper;
public KafkaProducerService(KafkaTemplate<String, Object> kafkaTemplate,
ObjectMapper objectMapper) {
this.kafkaTemplate = kafkaTemplate;
this.objectMapper = objectMapper;
}
public SendResult<String, Object> sendMessage(String topic, Object message) {
try {
String messageJson = objectMapper.writeValueAsString(message);
ListenableFuture<SendResult<String, Object>> future =
kafkaTemplate.send(topic, messageJson);
SendResult<String, Object> result = future.get(10, TimeUnit.SECONDS);
log.info("发送消息成功: topic={}, partition={}, offset={}",
topic, result.getRecordMetadata().partition(), result.getRecordMetadata().offset());
return result;
} catch (Exception e) {
log.error("发送消息失败: topic={}, message={}", topic, message, e);
throw new BusinessException("发送消息失败", e);
}
}
public SendResult<String, Object> sendMessage(String topic, String key, Object message) {
try {
String messageJson = objectMapper.writeValueAsString(message);
ListenableFuture<SendResult<String, Object>> future =
kafkaTemplate.send(topic, key, messageJson);
SendResult<String, Object> result = future.get(10, TimeUnit.SECONDS);
log.info("发送带键消息成功: topic={}, key={}, partition={}, offset={}",
topic, key, result.getRecordMetadata().partition(), result.getRecordMetadata().offset());
return result;
} catch (Exception e) {
log.error("发送带键消息失败: topic={}, key={}, message={}", topic, key, message, e);
throw new BusinessException("发送带键消息失败", e);
}
}
public SendResult<String, Object> sendMessage(String topic, int partition, String key, Object message) {
try {
String messageJson = objectMapper.writeValueAsString(message);
ListenableFuture<SendResult<String, Object>> future =
kafkaTemplate.send(topic, partition, key, messageJson);
SendResult<String, Object> result = future.get(10, TimeUnit.SECONDS);
log.info("发送分区消息成功: topic={}, partition={}, key={}, offset={}",
topic, partition, key, result.getRecordMetadata().offset());
return result;
} catch (Exception e) {
log.error("发送分区消息失败: topic={}, partition={}, key={}, message={}",
topic, partition, key, message, e);
throw new BusinessException("发送分区消息失败", e);
}
}
public void sendMessageAsync(String topic, Object message, SendCallback callback) {
try {
String messageJson = objectMapper.writeValueAsString(message);
ListenableFuture<SendResult<String, Object>> future =
kafkaTemplate.send(topic, messageJson);
future.addCallback(callback);
log.debug("异步发送消息: topic={}", topic);
} catch (Exception e) {
log.error("异步发送消息失败: topic={}, message={}", topic, message, e);
if (callback != null) {
callback.onFailure(new RuntimeException("异步发送消息失败", e));
}
}
}
public List<SendResult<String, Object>> sendBatchMessages(String topic, List<Object> messages) {
try {
List<SendResult<String, Object>> results = new ArrayList<>();
for (Object message : messages) {
try {
SendResult<String, Object> result = sendMessage(topic, message);
results.add(result);
} catch (Exception e) {
log.error("批量发送消息失败: topic={}, message={}", topic, message, e);
}
}
log.info("批量发送消息完成: topic={}, total={}, success={}",
topic, messages.size(), results.size());
return results;
} catch (Exception e) {
log.error("批量发送消息失败: topic={}", topic, e);
throw new BusinessException("批量发送消息失败", e);
}
}
@Transactional
public SendResult<String, Object> sendTransactionalMessage(String topic, Object message) {
try {
String messageJson = objectMapper.writeValueAsString(message);
ListenableFuture<SendResult<String, Object>> future =
kafkaTemplate.send(topic, messageJson);
SendResult<String, Object> result = future.get(10, TimeUnit.SECONDS);
log.info("发送事务消息成功: topic={}, partition={}, offset={}",
topic, result.getRecordMetadata().partition(), result.getRecordMetadata().offset());
return result;
} catch (Exception e) {
log.error("发送事务消息失败: topic={}, message={}", topic, message, e);
throw new BusinessException("发送事务消息失败", e);
}
}
}
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class KafkaMessage {
private String id;
private String type;
private Object data;
private LocalDateTime timestamp;
private String source;
private Map<String, Object> headers;
}
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class UserEventMessage {
private String userId;
private String eventType;
private String eventData;
private LocalDateTime eventTime;
private String source;
}
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class OrderEventMessage {
private String orderId;
private String userId;
private String eventType;
private String eventData;
private LocalDateTime eventTime;
private String source;
}
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