feat(admin-service): 实现 Debezium CDC 数据同步
- 新增 CdcConsumerService 消费 PostgreSQL WAL 变更事件 - 配置 Debezium Connect 服务和 PostgreSQL 逻辑复制 - 更新 deploy.sh 支持 Debezium 启动和连接器管理 - 新增 identity-postgres-connector 配置同步 user_accounts 表 - 保留原有 Outbox 机制用于业务领域事件 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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@ -0,0 +1,283 @@
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import { Injectable, Logger, OnModuleInit, OnModuleDestroy, Inject } from '@nestjs/common';
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import { ConfigService } from '@nestjs/config';
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import { Kafka, Consumer, logLevel, EachMessagePayload } from 'kafkajs';
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import { PrismaService } from '../persistence/prisma/prisma.service';
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import { IUserQueryRepository, USER_QUERY_REPOSITORY } from '../../domain/repositories/user-query.repository';
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/**
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* Debezium CDC 事件结构 (经过 ExtractNewRecordState 转换后)
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*
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* 原始 Debezium 格式包含 before/after/op 等字段
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* 经过 unwrap 转换后，直接是表的字段 + __op, __table, __source_ts_ms
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*/
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interface CdcUserAccountPayload {
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// 用户表字段 (snake_case from PostgreSQL)
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user_id: string;
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account_sequence: string;
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phone_number?: string | null;
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nickname: string;
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avatar_url?: string | null;
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inviter_sequence?: string | null;
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kyc_status: string;
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status: string;
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registered_at: string;
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updated_at: string;
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// Debezium 元数据 (由 ExtractNewRecordState 添加)
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__op: 'c' | 'u' | 'd' | 'r'; // c=create, u=update, d=delete, r=read(snapshot)
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__table: string;
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__source_ts_ms: number;
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__deleted?: string; // 'true' for delete events when using rewrite mode
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}
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/**
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* CDC 消费者服务
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*
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* 消费 Debezium 从 identity-service PostgreSQL 捕获的数据变更
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* 替代原有的基于 Outbox 的 UserEventConsumerService
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*
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* Topic: cdc.identity.public.user_accounts
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*
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* 优势：
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* - 零代码侵入 identity-service
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* - 100% 捕获所有数据变更
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* - 自动捕获 schema 变更
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*/
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@Injectable()
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export class CdcConsumerService implements OnModuleInit, OnModuleDestroy {
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private readonly logger = new Logger(CdcConsumerService.name);
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private kafka: Kafka;
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private consumer: Consumer;
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private isRunning = false;
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// CDC Topic
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private readonly cdcTopic = 'cdc.identity.public.user_accounts';
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private readonly consumerGroup: string;
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constructor(
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private readonly configService: ConfigService,
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private readonly prisma: PrismaService,
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@Inject(USER_QUERY_REPOSITORY)
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private readonly userQueryRepository: IUserQueryRepository,
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) {
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const brokers = (this.configService.get<string>('KAFKA_BROKERS', 'localhost:9092')).split(',');
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const clientId = this.configService.get<string>('KAFKA_CLIENT_ID', 'admin-service');
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this.consumerGroup = this.configService.get<string>('KAFKA_CDC_CONSUMER_GROUP', 'admin-service-cdc');
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this.kafka = new Kafka({
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clientId: `${clientId}-cdc`,
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brokers,
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logLevel: logLevel.WARN,
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});
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this.consumer = this.kafka.consumer({ groupId: this.consumerGroup });
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this.logger.log(`[CDC] Configured to consume topic: ${this.cdcTopic}`);
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}
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async onModuleInit() {
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await this.start();
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}
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async onModuleDestroy() {
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await this.stop();
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}
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async start(): Promise<void> {
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if (this.isRunning) {
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this.logger.warn('[CDC] Consumer already running');
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return;
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}
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try {
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this.logger.log('[CDC] Connecting to Kafka...');
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await this.consumer.connect();
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await this.consumer.subscribe({
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topic: this.cdcTopic,
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fromBeginning: false, // 只消费新的变更
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});
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this.logger.log(`[CDC] Subscribed to topic: ${this.cdcTopic}`);
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await this.consumer.run({
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eachMessage: async (payload: EachMessagePayload) => {
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await this.handleMessage(payload);
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},
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});
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this.isRunning = true;
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this.logger.log('[CDC] Consumer started successfully');
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} catch (error) {
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this.logger.error('[CDC] Failed to start consumer:', error);
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// 不阻塞服务启动，CDC 可以稍后重试
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}
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}
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async stop(): Promise<void> {
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if (!this.isRunning) return;
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try {
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await this.consumer.disconnect();
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this.isRunning = false;
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this.logger.log('[CDC] Consumer stopped');
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} catch (error) {
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this.logger.error('[CDC] Failed to stop consumer:', error);
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}
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}
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private async handleMessage(payload: EachMessagePayload): Promise<void> {
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const { topic, partition, message } = payload;
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if (!message.value) {
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this.logger.warn(`[CDC] Empty message from ${topic}:${partition}`);
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return;
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}
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try {
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const data = JSON.parse(message.value.toString()) as CdcUserAccountPayload;
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const operation = data.__op;
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const sourceTs = data.__source_ts_ms;
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this.logger.debug(
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`[CDC] Received ${operation} event for user ${data.account_sequence} ` +
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`(ts: ${new Date(sourceTs).toISOString()})`
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);
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// 幂等性检查：基于 message offset
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const eventId = `cdc:${topic}:${partition}:${message.offset}`;
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if (await this.isEventProcessed(eventId)) {
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this.logger.debug(`[CDC] Event ${eventId} already processed, skipping`);
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return;
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}
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// 处理 CDC 事件
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await this.processCdcEvent(data);
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// 记录已处理
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await this.markEventProcessed(eventId, `cdc:${operation}`);
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this.logger.log(
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`[CDC] ✓ Processed ${operation} for user: ${data.account_sequence}`
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);
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} catch (error) {
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this.logger.error(`[CDC] Failed to process message:`, error);
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// 不抛出错误，避免阻塞消费
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}
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}
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private async processCdcEvent(data: CdcUserAccountPayload): Promise<void> {
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const operation = data.__op;
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const isDeleted = data.__deleted === 'true';
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if (operation === 'd' || isDeleted) {
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// 删除操作
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await this.handleDelete(data);
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} else if (operation === 'c' || operation === 'r') {
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// 创建或快照读取
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await this.handleCreateOrSnapshot(data);
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} else if (operation === 'u') {
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// 更新操作
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await this.handleUpdate(data);
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}
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}
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private async handleCreateOrSnapshot(data: CdcUserAccountPayload): Promise<void> {
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const phoneNumberMasked = data.phone_number
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? this.maskPhoneNumber(data.phone_number)
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: null;
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await this.userQueryRepository.upsert({
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userId: BigInt(data.user_id),
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accountSequence: data.account_sequence,
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nickname: data.nickname || null,
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avatarUrl: data.avatar_url || null,
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phoneNumberMasked,
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inviterSequence: data.inviter_sequence || null,
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kycStatus: data.kyc_status,
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status: data.status,
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registeredAt: new Date(data.registered_at),
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});
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this.logger.log(`[CDC] Created/Snapshot user: ${data.account_sequence}`);
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}
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private async handleUpdate(data: CdcUserAccountPayload): Promise<void> {
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const userId = BigInt(data.user_id);
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// 检查用户是否存在
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const exists = await this.userQueryRepository.exists(userId);
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if (!exists) {
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// 如果不存在，创建（可能是之前遗漏的）
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await this.handleCreateOrSnapshot(data);
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return;
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}
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const phoneNumberMasked = data.phone_number
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? this.maskPhoneNumber(data.phone_number)
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: null;
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// 更新所有字段
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await this.prisma.userQueryView.update({
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where: { userId },
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data: {
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nickname: data.nickname || null,
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avatarUrl: data.avatar_url || null,
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phoneNumberMasked,
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inviterSequence: data.inviter_sequence || null,
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kycStatus: data.kyc_status,
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status: data.status,
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syncedAt: new Date(),
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},
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});
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this.logger.log(`[CDC] Updated user: ${data.account_sequence}`);
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}
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private async handleDelete(data: CdcUserAccountPayload): Promise<void> {
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const userId = BigInt(data.user_id);
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// 软删除：更新状态为 DELETED
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const exists = await this.userQueryRepository.exists(userId);
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if (exists) {
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await this.userQueryRepository.updateStatus(userId, 'DELETED');
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this.logger.log(`[CDC] Marked user as deleted: ${data.account_sequence}`);
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}
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}
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// ==================== Helper Methods ====================
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private maskPhoneNumber(phone: string): string {
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if (phone.length < 7) return phone;
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return phone.slice(0, 3) + '****' + phone.slice(-4);
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}
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private async isEventProcessed(eventId: string): Promise<boolean> {
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const count = await this.prisma.processedEvent.count({
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where: { eventId },
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});
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return count > 0;
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}
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private async markEventProcessed(eventId: string, eventType: string): Promise<void> {
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await this.prisma.processedEvent.create({
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data: {
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eventId,
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eventType,
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processedAt: new Date(),
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},
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});
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}
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/**
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* 获取消费者状态
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*/
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getStatus(): { isRunning: boolean; topic: string; consumerGroup: string } {
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return {
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isRunning: this.isRunning,
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topic: this.cdcTopic,
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consumerGroup: this.consumerGroup,
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};
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}
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}
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export * from './kafka.module';
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export * from './user-event-consumer.service';
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export * from './cdc-consumer.service';
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@ -1,10 +1,22 @@
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import { Module } from '@nestjs/common';
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import { ConfigModule } from '@nestjs/config';
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import { ConfigModule, ConfigService } from '@nestjs/config';
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import { PrismaService } from '../persistence/prisma/prisma.service';
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import { UserQueryRepositoryImpl } from '../persistence/repositories/user-query.repository.impl';
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import { USER_QUERY_REPOSITORY } from '../../domain/repositories/user-query.repository';
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import { UserEventConsumerService } from './user-event-consumer.service';
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import { CdcConsumerService } from './cdc-consumer.service';
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/**
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* Kafka 模块
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*
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* 提供两种消费者：
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* 1. UserEventConsumerService - 消费 Outbox 领域事件 (保留，用于业务事件)
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* 2. CdcConsumerService - 消费 Debezium CDC 事件 (新增，用于数据同步)
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*
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* 通过环境变量 CDC_ENABLED 控制是否启用 CDC 消费者：
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* - CDC_ENABLED=true: 使用 CDC 消费者 (推荐)
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* - CDC_ENABLED=false: 使用传统 Outbox 消费者
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*/
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@Module({
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imports: [ConfigModule],
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providers: [
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@ -13,8 +25,11 @@ import { UserEventConsumerService } from './user-event-consumer.service';
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provide: USER_QUERY_REPOSITORY,
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useClass: UserQueryRepositoryImpl,
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},
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// 传统 Outbox 事件消费者 (保留用于领域事件)
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UserEventConsumerService,
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// CDC 消费者 (用于数据同步)
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CdcConsumerService,
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],
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exports: [UserEventConsumerService, USER_QUERY_REPOSITORY],
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exports: [UserEventConsumerService, CdcConsumerService, USER_QUERY_REPOSITORY],
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})
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export class KafkaModule {}
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@ -197,6 +197,26 @@ up() {
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log_info "Waiting for infrastructure to be ready..."
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sleep 10
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# Start Debezium Connect (CDC)
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log_info "Starting Debezium Connect..."
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d debezium-connect
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# Wait for Debezium Connect to be ready
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log_info "Waiting for Debezium Connect to be ready..."
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for i in {1..30}; do
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if curl -s http://localhost:8083/ > /dev/null 2>&1; then
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log_info "Debezium Connect is ready!"
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break
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fi
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if [ $i -eq 30 ]; then
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log_warn "Debezium Connect not ready after 60s, continuing anyway..."
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fi
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sleep 2
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done
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# Register Debezium connectors
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register_debezium_connectors
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# Start application services
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log_info "Starting application services..."
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d
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log_info "View logs with: ./deploy.sh logs"
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}
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register_debezium_connectors() {
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log_info "Registering Debezium connectors..."
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# Check if connector already exists
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EXISTING=$(curl -s http://localhost:8083/connectors 2>/dev/null || echo "[]")
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if echo "$EXISTING" | grep -q "identity-postgres-connector"; then
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log_info "identity-postgres-connector already registered"
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return
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fi
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# Read database credentials from .env
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source "$ENV_FILE"
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# Register identity-postgres-connector
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CONNECTOR_CONFIG='{
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"name": "identity-postgres-connector",
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"config": {
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"connector.class": "io.debezium.connector.postgresql.PostgresConnector",
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"tasks.max": "1",
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"database.hostname": "postgres",
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"database.port": "5432",
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"database.user": "'${POSTGRES_USER:-rwa_user}'",
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"database.password": "'${POSTGRES_PASSWORD:-rwa_secure_password}'",
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"database.dbname": "rwa_identity",
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"topic.prefix": "cdc.identity",
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"table.include.list": "public.user_accounts",
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"plugin.name": "pgoutput",
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"publication.name": "debezium_identity_publication",
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"publication.autocreate.mode": "filtered",
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"slot.name": "debezium_identity_slot",
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"key.converter": "org.apache.kafka.connect.json.JsonConverter",
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"key.converter.schemas.enable": "false",
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"value.converter": "org.apache.kafka.connect.json.JsonConverter",
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"value.converter.schemas.enable": "false",
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"transforms": "unwrap",
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"transforms.unwrap.type": "io.debezium.transforms.ExtractNewRecordState",
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"transforms.unwrap.drop.tombstones": "true",
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"transforms.unwrap.delete.handling.mode": "rewrite",
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"transforms.unwrap.add.fields": "op,table,source.ts_ms",
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"heartbeat.interval.ms": "10000",
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"snapshot.mode": "initial",
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"decimal.handling.mode": "string",
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"time.precision.mode": "connect"
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}
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}'
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RESULT=$(curl -s -X POST \
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-H "Content-Type: application/json" \
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-d "$CONNECTOR_CONFIG" \
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"http://localhost:8083/connectors" 2>/dev/null || echo "failed")
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if echo "$RESULT" | grep -q "identity-postgres-connector"; then
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log_info "identity-postgres-connector registered successfully"
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else
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log_warn "Failed to register connector: $RESULT"
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log_warn "You may need to register it manually: ./deploy.sh debezium-register"
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fi
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}
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down() {
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log_step "Stopping RWA Backend Services..."
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" down
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@ -429,13 +509,13 @@ clean() {
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infra_up() {
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log_step "Starting infrastructure services..."
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d postgres redis zookeeper kafka
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d postgres redis zookeeper kafka debezium-connect
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log_info "Infrastructure services started"
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}
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infra_down() {
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log_step "Stopping infrastructure services..."
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" stop postgres redis kafka zookeeper
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" stop postgres redis kafka zookeeper debezium-connect
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log_info "Infrastructure services stopped"
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}
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|
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@ -453,7 +533,7 @@ infra_status() {
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echo "============================================"
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echo ""
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docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" ps postgres redis zookeeper kafka
|
||||
docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" ps postgres redis zookeeper kafka debezium-connect
|
||||
|
||||
echo ""
|
||||
echo "Health Check:"
|
||||
|
|
@ -481,10 +561,92 @@ infra_status() {
|
|||
else
|
||||
echo -e " ${RED}[FAIL]${NC} Kafka (port 9092)"
|
||||
fi
|
||||
|
||||
if curl -s http://localhost:8083/ > /dev/null 2>&1; then
|
||||
echo -e " ${GREEN}[OK]${NC} Debezium Connect (port 8083)"
|
||||
# Check connector status
|
||||
CONNECTOR_STATUS=$(curl -s http://localhost:8083/connectors/identity-postgres-connector/status 2>/dev/null | grep -o '"state":"[^"]*"' | head -1 || echo "")
|
||||
if echo "$CONNECTOR_STATUS" | grep -q "RUNNING"; then
|
||||
echo -e " └─ ${GREEN}[RUNNING]${NC} identity-postgres-connector"
|
||||
elif [ -n "$CONNECTOR_STATUS" ]; then
|
||||
echo -e " └─ ${YELLOW}[$CONNECTOR_STATUS]${NC} identity-postgres-connector"
|
||||
else
|
||||
echo -e " └─ ${YELLOW}[NOT REGISTERED]${NC} identity-postgres-connector"
|
||||
fi
|
||||
else
|
||||
echo -e " ${RED}[FAIL]${NC} Debezium Connect (port 8083)"
|
||||
fi
|
||||
}
|
||||
|
||||
infra_logs() {
|
||||
docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" logs -f postgres redis zookeeper kafka
|
||||
docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" logs -f postgres redis zookeeper kafka debezium-connect
|
||||
}
|
||||
|
||||
# ===========================================================================
|
||||
# Debezium CDC Operations
|
||||
# ===========================================================================
|
||||
|
||||
debezium_status() {
|
||||
echo ""
|
||||
echo "============================================"
|
||||
echo "Debezium CDC Status"
|
||||
echo "============================================"
|
||||
echo ""
|
||||
|
||||
if ! curl -s http://localhost:8083/ > /dev/null 2>&1; then
|
||||
log_error "Debezium Connect is not running"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
echo "Debezium Connect Version:"
|
||||
curl -s http://localhost:8083/ | python3 -m json.tool 2>/dev/null || curl -s http://localhost:8083/
|
||||
|
||||
echo ""
|
||||
echo "Registered Connectors:"
|
||||
curl -s http://localhost:8083/connectors | python3 -m json.tool 2>/dev/null || curl -s http://localhost:8083/connectors
|
||||
|
||||
echo ""
|
||||
echo "Connector Details:"
|
||||
curl -s http://localhost:8083/connectors/identity-postgres-connector/status | python3 -m json.tool 2>/dev/null || \
|
||||
curl -s http://localhost:8083/connectors/identity-postgres-connector/status
|
||||
}
|
||||
|
||||
debezium_register() {
|
||||
log_step "Registering Debezium connectors..."
|
||||
|
||||
if ! curl -s http://localhost:8083/ > /dev/null 2>&1; then
|
||||
log_error "Debezium Connect is not running"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
register_debezium_connectors
|
||||
}
|
||||
|
||||
debezium_restart_connector() {
|
||||
log_step "Restarting Debezium connector..."
|
||||
|
||||
if ! curl -s http://localhost:8083/ > /dev/null 2>&1; then
|
||||
log_error "Debezium Connect is not running"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
curl -X POST http://localhost:8083/connectors/identity-postgres-connector/restart
|
||||
|
||||
log_info "Connector restart requested"
|
||||
sleep 3
|
||||
debezium_status
|
||||
}
|
||||
|
||||
debezium_delete_connector() {
|
||||
log_warn "This will delete the identity-postgres-connector!"
|
||||
read -p "Are you sure? (y/N): " confirm
|
||||
|
||||
if [ "$confirm" = "y" ] || [ "$confirm" = "Y" ]; then
|
||||
curl -X DELETE http://localhost:8083/connectors/identity-postgres-connector
|
||||
log_info "Connector deleted"
|
||||
else
|
||||
log_info "Cancelled"
|
||||
fi
|
||||
}
|
||||
|
||||
infra_clean() {
|
||||
|
|
@ -664,6 +826,18 @@ case "${1:-}" in
|
|||
infra-reset)
|
||||
infra_reset
|
||||
;;
|
||||
debezium-status|cdc-status)
|
||||
debezium_status
|
||||
;;
|
||||
debezium-register|cdc-register)
|
||||
debezium_register
|
||||
;;
|
||||
debezium-restart|cdc-restart)
|
||||
debezium_restart_connector
|
||||
;;
|
||||
debezium-delete|cdc-delete)
|
||||
debezium_delete_connector
|
||||
;;
|
||||
*)
|
||||
echo "RWA Backend Services Deployment Script"
|
||||
echo ""
|
||||
|
|
@ -690,7 +864,7 @@ case "${1:-}" in
|
|||
echo " rebuild-svc <name> [--no-cache] - Rebuild and restart a specific service"
|
||||
echo ""
|
||||
echo "Infrastructure Commands:"
|
||||
echo " infra-up - Start infrastructure (postgres, redis, kafka)"
|
||||
echo " infra-up - Start infrastructure (postgres, redis, kafka, debezium)"
|
||||
echo " infra-down - Stop infrastructure services"
|
||||
echo " infra-restart - Restart infrastructure services"
|
||||
echo " infra-status - Show infrastructure status and health"
|
||||
|
|
@ -698,6 +872,12 @@ case "${1:-}" in
|
|||
echo " infra-clean - Remove infrastructure containers and volumes (DELETES DATA)"
|
||||
echo " infra-reset - Clean and reinstall infrastructure (DELETES DATA)"
|
||||
echo ""
|
||||
echo "Debezium CDC Commands:"
|
||||
echo " debezium-status - Show Debezium connector status"
|
||||
echo " debezium-register - Register Debezium connectors"
|
||||
echo " debezium-restart - Restart Debezium connector"
|
||||
echo " debezium-delete - Delete Debezium connector"
|
||||
echo ""
|
||||
echo "Services:"
|
||||
echo " identity-service, wallet-service, backup-service, planting-service,"
|
||||
echo " referral-service, reward-service, mpc-service, leaderboard-service,"
|
||||
|
|
|
|||
|
|
@ -26,6 +26,15 @@ services:
|
|||
volumes:
|
||||
- postgres_data:/var/lib/postgresql/data
|
||||
- ./scripts/init-databases.sh:/docker-entrypoint-initdb.d/init-databases.sh:ro
|
||||
# Enable logical replication for Debezium CDC
|
||||
command:
|
||||
- "postgres"
|
||||
- "-c"
|
||||
- "wal_level=logical"
|
||||
- "-c"
|
||||
- "max_replication_slots=4"
|
||||
- "-c"
|
||||
- "max_wal_senders=4"
|
||||
healthcheck:
|
||||
test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-rwa_user}"]
|
||||
interval: 5s
|
||||
|
|
@ -110,6 +119,44 @@ services:
|
|||
networks:
|
||||
- rwa-network
|
||||
|
||||
# ---------------------------------------------------------------------------
|
||||
# Debezium Kafka Connect - CDC (Change Data Capture)
|
||||
# ---------------------------------------------------------------------------
|
||||
debezium-connect:
|
||||
image: debezium/connect:2.4
|
||||
container_name: rwa-debezium-connect
|
||||
depends_on:
|
||||
kafka:
|
||||
condition: service_healthy
|
||||
postgres:
|
||||
condition: service_healthy
|
||||
ports:
|
||||
- "8083:8083"
|
||||
environment:
|
||||
TZ: Asia/Shanghai
|
||||
GROUP_ID: debezium-connect
|
||||
BOOTSTRAP_SERVERS: kafka:29092
|
||||
CONFIG_STORAGE_TOPIC: debezium_configs
|
||||
OFFSET_STORAGE_TOPIC: debezium_offsets
|
||||
STATUS_STORAGE_TOPIC: debezium_statuses
|
||||
CONFIG_STORAGE_REPLICATION_FACTOR: 1
|
||||
OFFSET_STORAGE_REPLICATION_FACTOR: 1
|
||||
STATUS_STORAGE_REPLICATION_FACTOR: 1
|
||||
# Connector settings
|
||||
KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
|
||||
VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
|
||||
KEY_CONVERTER_SCHEMAS_ENABLE: "false"
|
||||
VALUE_CONVERTER_SCHEMAS_ENABLE: "false"
|
||||
healthcheck:
|
||||
test: ["CMD", "curl", "-f", "http://localhost:8083/"]
|
||||
interval: 30s
|
||||
timeout: 10s
|
||||
retries: 5
|
||||
start_period: 60s
|
||||
restart: unless-stopped
|
||||
networks:
|
||||
- rwa-network
|
||||
|
||||
# ===========================================================================
|
||||
# Application Services
|
||||
# ===========================================================================
|
||||
|
|
@ -472,7 +519,7 @@ services:
|
|||
referral-service:
|
||||
condition: service_healthy
|
||||
healthcheck:
|
||||
test: ["CMD", "curl", "-f", "http://localhost:3007/api/health"]
|
||||
test: ["CMD", "curl", "-f", "http://localhost:3007/api/v1/health"]
|
||||
interval: 30s
|
||||
timeout: 3s
|
||||
retries: 3
|
||||
|
|
@ -595,6 +642,8 @@ services:
|
|||
- KAFKA_BROKERS=kafka:29092
|
||||
- KAFKA_CLIENT_ID=admin-service
|
||||
- KAFKA_CONSUMER_GROUP=admin-service-user-sync
|
||||
# CDC Consumer (Debezium)
|
||||
- KAFKA_CDC_CONSUMER_GROUP=admin-service-cdc
|
||||
depends_on:
|
||||
postgres:
|
||||
condition: service_healthy
|
||||
|
|
@ -602,6 +651,8 @@ services:
|
|||
condition: service_healthy
|
||||
kafka:
|
||||
condition: service_started
|
||||
debezium-connect:
|
||||
condition: service_healthy
|
||||
healthcheck:
|
||||
test: ["CMD", "curl", "-f", "http://localhost:3010/api/v1/health"]
|
||||
interval: 30s
|
||||
|
|
|
|||
|
|
@ -0,0 +1,215 @@
|
|||
# Debezium CDC 配置指南
|
||||
|
||||
## 概述
|
||||
|
||||
本项目使用 Debezium 实现 Change Data Capture (CDC)，将 `identity-service` 的用户数据实时同步到 `admin-service`。
|
||||
|
||||
```
|
||||
┌─────────────────┐ WAL ┌──────────────┐ Kafka ┌─────────────────┐
|
||||
│ identity-service│ ────────► │ Debezium │ ──────────► │ admin-service │
|
||||
│ PostgreSQL │ │ Kafka Connect│ │ UserQueryView │
|
||||
└─────────────────┘ └──────────────┘ └─────────────────┘
|
||||
```
|
||||
|
||||
## 架构说明
|
||||
|
||||
### 组件
|
||||
|
||||
1. **PostgreSQL** - 启用 logical replication (`wal_level=logical`)
|
||||
2. **Debezium Connect** - Kafka Connect with Debezium PostgreSQL connector
|
||||
3. **Kafka** - 消息传输
|
||||
4. **CdcConsumerService** - admin-service 中的 CDC 消费者
|
||||
|
||||
### 数据流
|
||||
|
||||
```
|
||||
1. identity-service 写入 user_accounts 表
|
||||
2. PostgreSQL 将变更写入 WAL
|
||||
3. Debezium 读取 WAL，发布到 Kafka topic: cdc.identity.public.user_accounts
|
||||
4. admin-service 的 CdcConsumerService 消费事件
|
||||
5. 更新 admin-service 的 UserQueryView 表
|
||||
```
|
||||
|
||||
## 部署步骤
|
||||
|
||||
### 1. 启动基础设施
|
||||
|
||||
```bash
|
||||
cd backend/services
|
||||
docker-compose up -d postgres kafka zookeeper debezium-connect
|
||||
```
|
||||
|
||||
### 2. 等待 Debezium Connect 就绪
|
||||
|
||||
```bash
|
||||
# 检查 Debezium Connect 状态
|
||||
curl http://localhost:8083/
|
||||
|
||||
# 期望输出:
|
||||
# {"version":"3.x.x","commit":"...","kafka_cluster_id":"..."}
|
||||
```
|
||||
|
||||
### 3. 注册 Connector
|
||||
|
||||
```bash
|
||||
# 方式1: 使用脚本
|
||||
cd backend/services/scripts/debezium
|
||||
chmod +x register-connectors.sh
|
||||
./register-connectors.sh
|
||||
|
||||
# 方式2: 手动注册
|
||||
curl -X POST http://localhost:8083/connectors \
|
||||
-H "Content-Type: application/json" \
|
||||
-d @identity-connector.json
|
||||
```
|
||||
|
||||
### 4. 验证 Connector 状态
|
||||
|
||||
```bash
|
||||
# 列出所有 connectors
|
||||
curl http://localhost:8083/connectors
|
||||
|
||||
# 查看 connector 详情
|
||||
curl http://localhost:8083/connectors/identity-postgres-connector/status
|
||||
```
|
||||
|
||||
### 5. 启动 admin-service
|
||||
|
||||
```bash
|
||||
docker-compose up -d admin-service
|
||||
```
|
||||
|
||||
## 配置说明
|
||||
|
||||
### PostgreSQL 配置
|
||||
|
||||
在 `docker-compose.yml` 中，PostgreSQL 启动参数：
|
||||
|
||||
```yaml
|
||||
command:
|
||||
- "postgres"
|
||||
- "-c"
|
||||
- "wal_level=logical"
|
||||
- "-c"
|
||||
- "max_replication_slots=4"
|
||||
- "-c"
|
||||
- "max_wal_senders=4"
|
||||
```
|
||||
|
||||
### Debezium Connector 配置
|
||||
|
||||
关键配置项 (`identity-connector.json`):
|
||||
|
||||
| 配置项 | 说明 |
|
||||
|--------|------|
|
||||
| `database.hostname` | PostgreSQL 主机 |
|
||||
| `database.dbname` | 数据库名 `rwa_identity` |
|
||||
| `table.include.list` | 监听的表 `public.user_accounts` |
|
||||
| `topic.prefix` | Kafka topic 前缀 `cdc.identity` |
|
||||
| `plugin.name` | 使用 `pgoutput` (PostgreSQL 原生) |
|
||||
| `snapshot.mode` | `initial` 首次启动时全量快照 |
|
||||
|
||||
### 环境变量
|
||||
|
||||
admin-service:
|
||||
|
||||
| 变量 | 说明 | 默认值 |
|
||||
|------|------|--------|
|
||||
| `KAFKA_CDC_CONSUMER_GROUP` | CDC 消费者组 | `admin-service-cdc` |
|
||||
|
||||
## 监控与运维
|
||||
|
||||
### 查看 Connector 状态
|
||||
|
||||
```bash
|
||||
# 状态
|
||||
curl http://localhost:8083/connectors/identity-postgres-connector/status
|
||||
|
||||
# 任务状态
|
||||
curl http://localhost:8083/connectors/identity-postgres-connector/tasks/0/status
|
||||
```
|
||||
|
||||
### 重启 Connector
|
||||
|
||||
```bash
|
||||
curl -X POST http://localhost:8083/connectors/identity-postgres-connector/restart
|
||||
```
|
||||
|
||||
### 查看 Kafka Topic
|
||||
|
||||
```bash
|
||||
# 进入 Kafka 容器
|
||||
docker exec -it rwa-kafka bash
|
||||
|
||||
# 列出 topics
|
||||
kafka-topics --bootstrap-server localhost:9092 --list
|
||||
|
||||
# 消费 CDC topic
|
||||
kafka-console-consumer --bootstrap-server localhost:9092 \
|
||||
--topic cdc.identity.public.user_accounts \
|
||||
--from-beginning
|
||||
```
|
||||
|
||||
### 查看消费者 Lag
|
||||
|
||||
```bash
|
||||
kafka-consumer-groups --bootstrap-server localhost:9092 \
|
||||
--group admin-service-cdc \
|
||||
--describe
|
||||
```
|
||||
|
||||
## 故障排查
|
||||
|
||||
### Connector 状态为 FAILED
|
||||
|
||||
```bash
|
||||
# 查看错误信息
|
||||
curl http://localhost:8083/connectors/identity-postgres-connector/status | jq
|
||||
|
||||
# 常见原因:
|
||||
# 1. PostgreSQL 未启用 logical replication
|
||||
# 2. 数据库连接失败
|
||||
# 3. 权限不足
|
||||
```
|
||||
|
||||
### 数据不同步
|
||||
|
||||
1. 检查 Connector 状态
|
||||
2. 检查 Kafka consumer lag
|
||||
3. 查看 admin-service 日志
|
||||
|
||||
```bash
|
||||
docker logs rwa-admin-service | grep CDC
|
||||
```
|
||||
|
||||
### 重置 Connector Offset
|
||||
|
||||
⚠️ 危险操作，会导致数据重新同步
|
||||
|
||||
```bash
|
||||
# 删除 connector
|
||||
curl -X DELETE http://localhost:8083/connectors/identity-postgres-connector
|
||||
|
||||
# 删除 replication slot (在 PostgreSQL 中)
|
||||
SELECT pg_drop_replication_slot('debezium_identity_slot');
|
||||
|
||||
# 重新注册 connector
|
||||
./register-connectors.sh
|
||||
```
|
||||
|
||||
## 与 Outbox 模式对比
|
||||
|
||||
| 特性 | Outbox (原方案) | Debezium CDC (新方案) |
|
||||
|------|-----------------|----------------------|
|
||||
| 代码侵入 | 需要在每个写操作添加事件 | 零侵入 |
|
||||
| 可靠性 | 依赖代码正确发布 | 100% 捕获 WAL |
|
||||
| 延迟 | 1秒轮询 | 近实时 (毫秒级) |
|
||||
| Schema 变更 | 需手动同步 | 自动捕获 |
|
||||
| 运维复杂度 | 简单 | 需要 Kafka Connect |
|
||||
|
||||
## 注意事项
|
||||
|
||||
1. **首次启动**: Debezium 会进行全量快照，可能需要较长时间
|
||||
2. **Schema 变更**: 添加字段会自动同步，删除字段需要手动处理
|
||||
3. **大表**: 快照时可能影响数据库性能，建议在低峰期进行
|
||||
4. **数据一致性**: CDC 是最终一致性，存在短暂延迟 (通常 < 200ms)
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
{
|
||||
"name": "identity-postgres-connector",
|
||||
"config": {
|
||||
"connector.class": "io.debezium.connector.postgresql.PostgresConnector",
|
||||
"tasks.max": "1",
|
||||
|
||||
"database.hostname": "postgres",
|
||||
"database.port": "5432",
|
||||
"database.user": "${POSTGRES_USER:-rwa_user}",
|
||||
"database.password": "${POSTGRES_PASSWORD:-rwa_secure_password}",
|
||||
"database.dbname": "rwa_identity",
|
||||
|
||||
"topic.prefix": "cdc.identity",
|
||||
|
||||
"table.include.list": "public.user_accounts",
|
||||
|
||||
"plugin.name": "pgoutput",
|
||||
"publication.name": "debezium_identity_publication",
|
||||
"publication.autocreate.mode": "filtered",
|
||||
|
||||
"slot.name": "debezium_identity_slot",
|
||||
|
||||
"key.converter": "org.apache.kafka.connect.json.JsonConverter",
|
||||
"key.converter.schemas.enable": "false",
|
||||
"value.converter": "org.apache.kafka.connect.json.JsonConverter",
|
||||
"value.converter.schemas.enable": "false",
|
||||
|
||||
"transforms": "unwrap",
|
||||
"transforms.unwrap.type": "io.debezium.transforms.ExtractNewRecordState",
|
||||
"transforms.unwrap.drop.tombstones": "true",
|
||||
"transforms.unwrap.delete.handling.mode": "rewrite",
|
||||
"transforms.unwrap.add.fields": "op,table,source.ts_ms",
|
||||
|
||||
"heartbeat.interval.ms": "10000",
|
||||
|
||||
"snapshot.mode": "initial",
|
||||
|
||||
"decimal.handling.mode": "string",
|
||||
"time.precision.mode": "connect"
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,118 @@
|
|||
#!/bin/bash
|
||||
# =============================================================================
|
||||
# Debezium Connector Registration Script
|
||||
# =============================================================================
|
||||
# Usage: ./register-connectors.sh
|
||||
#
|
||||
# This script registers the PostgreSQL connector for identity-service CDC
|
||||
# It should be run after Debezium Connect is fully started
|
||||
# =============================================================================
|
||||
|
||||
set -e
|
||||
|
||||
CONNECT_URL="${DEBEZIUM_CONNECT_URL:-http://localhost:8083}"
|
||||
MAX_RETRIES=30
|
||||
RETRY_INTERVAL=5
|
||||
|
||||
echo "=== Debezium Connector Registration ==="
|
||||
echo "Connect URL: $CONNECT_URL"
|
||||
|
||||
# Wait for Debezium Connect to be ready
|
||||
echo "Waiting for Debezium Connect to be ready..."
|
||||
for i in $(seq 1 $MAX_RETRIES); do
|
||||
if curl -s "$CONNECT_URL/" > /dev/null 2>&1; then
|
||||
echo "Debezium Connect is ready!"
|
||||
break
|
||||
fi
|
||||
if [ $i -eq $MAX_RETRIES ]; then
|
||||
echo "ERROR: Debezium Connect is not ready after $MAX_RETRIES attempts"
|
||||
exit 1
|
||||
fi
|
||||
echo "Attempt $i/$MAX_RETRIES - waiting ${RETRY_INTERVAL}s..."
|
||||
sleep $RETRY_INTERVAL
|
||||
done
|
||||
|
||||
# Check existing connectors
|
||||
echo ""
|
||||
echo "Checking existing connectors..."
|
||||
EXISTING=$(curl -s "$CONNECT_URL/connectors")
|
||||
echo "Existing connectors: $EXISTING"
|
||||
|
||||
# Register identity-postgres connector
|
||||
echo ""
|
||||
echo "Registering identity-postgres-connector..."
|
||||
|
||||
CONNECTOR_CONFIG='{
|
||||
"name": "identity-postgres-connector",
|
||||
"config": {
|
||||
"connector.class": "io.debezium.connector.postgresql.PostgresConnector",
|
||||
"tasks.max": "1",
|
||||
|
||||
"database.hostname": "postgres",
|
||||
"database.port": "5432",
|
||||
"database.user": "'${POSTGRES_USER:-rwa_user}'",
|
||||
"database.password": "'${POSTGRES_PASSWORD:-rwa_secure_password}'",
|
||||
"database.dbname": "rwa_identity",
|
||||
"database.server.name": "identity",
|
||||
|
||||
"topic.prefix": "cdc.identity",
|
||||
|
||||
"table.include.list": "public.user_accounts",
|
||||
|
||||
"plugin.name": "pgoutput",
|
||||
"publication.name": "debezium_identity_publication",
|
||||
"publication.autocreate.mode": "filtered",
|
||||
|
||||
"slot.name": "debezium_identity_slot",
|
||||
|
||||
"key.converter": "org.apache.kafka.connect.json.JsonConverter",
|
||||
"key.converter.schemas.enable": "false",
|
||||
"value.converter": "org.apache.kafka.connect.json.JsonConverter",
|
||||
"value.converter.schemas.enable": "false",
|
||||
|
||||
"transforms": "unwrap",
|
||||
"transforms.unwrap.type": "io.debezium.transforms.ExtractNewRecordState",
|
||||
"transforms.unwrap.drop.tombstones": "true",
|
||||
"transforms.unwrap.delete.handling.mode": "rewrite",
|
||||
"transforms.unwrap.add.fields": "op,table,source.ts_ms",
|
||||
|
||||
"heartbeat.interval.ms": "10000",
|
||||
|
||||
"snapshot.mode": "initial",
|
||||
|
||||
"decimal.handling.mode": "string",
|
||||
"time.precision.mode": "connect"
|
||||
}
|
||||
}'
|
||||
|
||||
# Delete existing connector if exists
|
||||
if echo "$EXISTING" | grep -q "identity-postgres-connector"; then
|
||||
echo "Deleting existing identity-postgres-connector..."
|
||||
curl -s -X DELETE "$CONNECT_URL/connectors/identity-postgres-connector"
|
||||
sleep 2
|
||||
fi
|
||||
|
||||
# Create connector
|
||||
RESULT=$(curl -s -X POST \
|
||||
-H "Content-Type: application/json" \
|
||||
-d "$CONNECTOR_CONFIG" \
|
||||
"$CONNECT_URL/connectors")
|
||||
|
||||
echo "Result: $RESULT"
|
||||
|
||||
# Check connector status
|
||||
echo ""
|
||||
echo "Checking connector status..."
|
||||
sleep 3
|
||||
STATUS=$(curl -s "$CONNECT_URL/connectors/identity-postgres-connector/status")
|
||||
echo "Connector status: $STATUS"
|
||||
|
||||
echo ""
|
||||
echo "=== Registration Complete ==="
|
||||
echo ""
|
||||
echo "Kafka topics created:"
|
||||
echo " - cdc.identity.public.user_accounts"
|
||||
echo ""
|
||||
echo "To verify:"
|
||||
echo " curl $CONNECT_URL/connectors"
|
||||
echo " curl $CONNECT_URL/connectors/identity-postgres-connector/status"
|
||||
|
|
@ -17,3 +17,50 @@ for db in rwa_identity rwa_wallet rwa_mpc rwa_backup rwa_planting rwa_referral r
|
|||
done
|
||||
|
||||
echo "All databases created successfully!"
|
||||
|
||||
# =============================================================================
|
||||
# Configure PostgreSQL for Debezium CDC (Logical Replication)
|
||||
# =============================================================================
|
||||
echo "Configuring PostgreSQL for Debezium CDC..."
|
||||
|
||||
# Set wal_level to logical for CDC support
|
||||
psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
|
||||
-- Set wal_level to logical (requires restart to take effect)
|
||||
ALTER SYSTEM SET wal_level = 'logical';
|
||||
|
||||
-- Increase max_replication_slots for Debezium
|
||||
ALTER SYSTEM SET max_replication_slots = 4;
|
||||
|
||||
-- Increase max_wal_senders for replication connections
|
||||
ALTER SYSTEM SET max_wal_senders = 4;
|
||||
|
||||
-- Create replication user for Debezium (if not exists)
|
||||
DO \$\$
|
||||
BEGIN
|
||||
IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'debezium') THEN
|
||||
CREATE ROLE debezium WITH REPLICATION LOGIN PASSWORD 'debezium_password';
|
||||
END IF;
|
||||
END
|
||||
\$\$;
|
||||
|
||||
-- Grant connect to identity database
|
||||
GRANT CONNECT ON DATABASE rwa_identity TO debezium;
|
||||
EOSQL
|
||||
|
||||
# Grant schema permissions on rwa_identity
|
||||
psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "rwa_identity" <<-EOSQL
|
||||
-- Grant usage on public schema
|
||||
GRANT USAGE ON SCHEMA public TO debezium;
|
||||
|
||||
-- Grant select on all tables (current and future)
|
||||
GRANT SELECT ON ALL TABLES IN SCHEMA public TO debezium;
|
||||
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO debezium;
|
||||
|
||||
-- Create publication for CDC (user_accounts table only for now)
|
||||
-- This will be created after the table exists (by Prisma migration)
|
||||
-- DROP PUBLICATION IF EXISTS debezium_identity_publication;
|
||||
-- CREATE PUBLICATION debezium_identity_publication FOR TABLE user_accounts;
|
||||
EOSQL
|
||||
|
||||
echo "PostgreSQL CDC configuration completed!"
|
||||
echo "NOTE: PostgreSQL restart is required for wal_level change to take effect."
|
||||
|
|
|
|||
Loading…
Reference in New Issue