86 lines
2.5 KiB
TypeScript
86 lines
2.5 KiB
TypeScript
import { Controller, Logger } from '@nestjs/common';
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import { MessagePattern, Payload, Ctx, KafkaContext } from '@nestjs/microservices';
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import { OutboxRepository } from '../persistence/repositories/outbox.repository';
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/**
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* 事件确认消息结构
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*/
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interface EventAckMessage {
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/** 原始事件的 aggregateId（如 orderNo） */
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eventId: string;
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/** 原始事件类型 */
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eventType: string;
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/** 消费服务名称 */
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consumerService: string;
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/** 处理结果 */
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success: boolean;
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/** 错误信息（如果失败） */
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error?: string;
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/** 确认时间 */
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confirmedAt: string;
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}
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/**
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* 事件确认 Kafka 控制器
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*
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* B方案核心组件：监听消费方的确认事件
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* 使用 @MessagePattern 装饰器来处理 Kafka 消息
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*/
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@Controller()
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export class EventAckController {
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private readonly logger = new Logger(EventAckController.name);
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constructor(private readonly outboxRepository: OutboxRepository) {}
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/**
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* 处理事件确认消息
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*
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* 消费方（reward-service, referral-service, authorization-service）
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* 成功处理事件后，会发送确认消息到此 topic
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*/
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@MessagePattern('planting.events.ack')
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async handleEventAck(
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@Payload() message: EventAckMessage,
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@Ctx() context: KafkaContext,
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): Promise<void> {
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const partition = context.getPartition();
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const offset = context.getMessage().offset;
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this.logger.debug(
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`[ACK] Received ack from ${message.consumerService} for event ${message.eventId} ` +
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`[partition=${partition}, offset=${offset}]`,
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);
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try {
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if (message.success) {
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// 标记事件为已确认（使用 eventId + eventType 精确匹配）
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const confirmed = await this.outboxRepository.markAsConfirmed(
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message.eventId,
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message.eventType,
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);
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if (confirmed) {
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this.logger.log(
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`[ACK] ✓ Event ${message.eventId} (${message.eventType}) confirmed by ${message.consumerService}`,
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);
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} else {
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this.logger.warn(
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`[ACK] Event ${message.eventId} (${message.eventType}) not found or already confirmed`,
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);
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}
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} else {
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// 消费方处理失败
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this.logger.warn(
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`[ACK] ✗ Event ${message.eventId} failed in ${message.consumerService}: ${message.error}`,
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);
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// 不改变状态，等待超时重发
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}
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} catch (error) {
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this.logger.error(
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`[ACK] Error processing ack for event ${message.eventId}:`,
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error,
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);
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}
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}
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}
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