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SpringBoot2.x Nacos RocketMQ 事务消息

我阿霆哥 2022-09-07 阅读 73
事务消息springapache用户中心Spark大数据


需求背景：
现在有内容中心（content-center）和 用户中心（user-center）2个微服务，请求内容中心，发送消息给用户中心，完成为指定用户添加积分操作。

SpringBoot2.x Nacos RocketMQ 事务消息_apache

文章目录

  • ​​一、准备工作​​
  • ​​1. 版本对照​​
  • ​​2. 下载启动RocketMQ​​
  • ​​3. 引入maven依赖​​
  • ​​二、内容中心（服务端）​​
  • ​​2.1. 表结构设计​​
  • ​​2.2. 配置MQ信息​​
  • ​​2.3. 控制层​​
  • ​​2.4. service层​​
  • ​​2.5. RocketMQ 事务消息监听​​
  • ​​三、用户中心（客户端）​​
  • ​​3.1. 依赖​​
  • ​​3.2.配置​​
  • ​​3.3. 消息监听​​
  • ​​开源项目：​​
一、准备工作
1. 版本对照

RocketMQ 版本

RocketMQ控制台版本

RocketMQ starter版本

RocketMQ 4.8.0

支持RocketMQ 4.8.0

2.2.0

2. 下载启动RocketMQ

linux 环境 RocketMQ 4.8.0 安装、部署控制台
​​​​​

windows下RocketMQ下载、安装、部署、控制台​

3. 引入maven依赖

<!--集成rocketmq-->
        <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
            <version>2.2.0</version>
        </dependency>

二、内容中心（服务端）

消息发送端代码编写

2.1. 表结构设计

share分享表和rocketmq_transaction_logRocketMQ事务日志表2张表，
share

CREATE TABLE IF NOT EXISTS `share` (
  `id` INT NOT NULL AUTO_INCREMENT COMMENT 'id',
  `user_id` INT NOT NULL DEFAULT 0 COMMENT '发布人id',
  `title` VARCHAR(80) NOT NULL DEFAULT '' COMMENT '标题',
  `create_time` DATETIME NOT NULL COMMENT '创建时间',
  `update_time` DATETIME NOT NULL COMMENT '修改时间',
  `is_original` TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否原创 0:否 1:是',
  `author` VARCHAR(45) NOT NULL DEFAULT '' COMMENT '作者',
  `cover` VARCHAR(256) NOT NULL DEFAULT '' COMMENT '封面',
  `summary` VARCHAR(256) NOT NULL DEFAULT '' COMMENT '概要信息',
  `price` INT NOT NULL DEFAULT 0 COMMENT '价格（需要的积分）',
  `download_url` VARCHAR(256) NOT NULL DEFAULT '' COMMENT '下载地址',
  `buy_count` INT NOT NULL DEFAULT 0 COMMENT '下载数 ',
  `show_flag` TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否显示 0:否 1:是',
  `audit_status` VARCHAR(10) NOT NULL DEFAULT 0 COMMENT '审核状态 NOT_YET: 待审核 PASSED:审核通过 REJECTED:审核不通过',
  `reason` VARCHAR(200) NOT NULL DEFAULT '' COMMENT '审核不通过原因',
  PRIMARY KEY (`id`))
ENGINE = InnoDB
COMMENT = '分享表';

rocketmq_transaction_logRocketMQ

-- -----------------------------------------------------
-- Table `rocketmq_transaction_log`
-- -----------------------------------------------------
create table rocketmq_transaction_log
(
  id             int auto_increment comment 'id'
    primary key,
  transaction_Id varchar(45) not null comment '事务id',
  log            varchar(45) not null comment '日志'
)
  comment 'RocketMQ事务日志表';

具体详情：见项目源码

2.2. 配置MQ信息
  • 项目内部yml配置

server:
  port: 8003
spring:
  application:
    # 应用名称
    name: ly-rockketmq
  profiles:
    # 环境配置
    active: dev
  cloud:
    nacos:
      discovery:
        # 服务注册地址
        server-addr: nacos.server.com:8848
      config:
        # 配置中心地址
        server-addr: nacos.server.com:8848
        # 配置文件格式
        file-extension: yml
        # 共享配置
        shared-configs:
          - application-${spring.profiles.active}.${spring.cloud.nacos.config.file-extension}

  • nacos服务端配置

# MQ name-server地址
rocketmq:
  name-server: 127.0.0.1:9876
  producer:
    #必须指定group

2.3. 控制层

package com.gblfy.lyrocketmq.controller;

import com.gblfy.common.dto.ShareAuditDTO;
import com.gblfy.lyrocketmq.entity.Share;
import com.gblfy.lyrocketmq.service.ShareService;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/admin/shares")
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class ShareAdminController {

    private final ShareService shareService;

    @PutMapping("/audit/{id}")
    public Share auditById(@PathVariable Integer id, @RequestBody ShareAuditDTO auditDTO) {
        //TODO 认证授权
        return this.shareService.auditById(id, auditDTO);
    }
}

2.4. service层

package com.gblfy.lyrocketmq.service;

import com.gblfy.api.RemoteProductService;
import com.gblfy.common.dto.ShareAuditDTO;
import com.gblfy.common.dto.ShareDTO;
import com.gblfy.common.dto.UserAddBonusMsgDTO;
import com.gblfy.common.dto.UserDTO;
import com.gblfy.common.enums.AuditStatusEnum;
import com.gblfy.lyrocketmq.entity.RocketmqTransactionLog;
import com.gblfy.lyrocketmq.entity.Share;
import com.gblfy.lyrocketmq.mapper.RocketmqTransactionLogMapper;
import com.gblfy.lyrocketmq.mapper.ShareMapper;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.apache.rocketmq.spring.support.RocketMQHeaders;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Objects;
import java.util.UUID;

@Slf4j
@Service
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class ShareService {

    private final ShareMapper shareMapper;
    private final RemoteProductService userCenterFeignClient;
    private final RocketMQTemplate rocketMQTemplate;
    private final RocketmqTransactionLogMapper rocketmqTransactionLogMapper;

    public ShareDTO findById(Integer id) {
        Share share = this.shareMapper.selectByPrimaryKey(id);
        Integer userId = share.getUserId();

        UserDTO userDTO = this.userCenterFeignClient.findById(userId);

        ShareDTO shareDTO = new ShareDTO();
        BeanUtils.copyProperties(share, shareDTO);
        //设置发布人
        shareDTO.setWxNickname(userDTO.getWxNickname());
        return shareDTO;
    }

    public Share auditById(Integer id, ShareAuditDTO auditDTO) {
        // 1. 查询share是否存在，不存在或者当前的audit_status != NOT_YET，那么抛异常
        Share share = this.shareMapper.selectByPrimaryKey(id);
        if (share == null) {
            throw new IllegalArgumentException("参数非法！该分享不存在！");
        }
        if (!Objects.equals("NOT_YET", share.getAuditStatus())) {
            throw new IllegalArgumentException("参数非法！该分享已审核通过或审核不通过！");
        }

        //----------------------------------------发送半消息----------------------------------------
        // 3. 如果是PASS，那么发送消息给rocketmq，让用户中心去消费，并为发布人添加积分
        if (AuditStatusEnum.PASS.equals(auditDTO.getAuditStatusEnum())) {
            //消息id
            String transactionId = UUID.randomUUID().toString();

            this.rocketMQTemplate.sendMessageInTransaction(
                    "tx-add-bonus-group",
                    MessageBuilder.withPayload(UserAddBonusMsgDTO.builder()
                                            .userId(share.getUserId())
                                            .bonus(50)
                                            .build()
                                    // Header有妙用
                            ).setHeader(RocketMQHeaders.TRANSACTION_ID, transactionId)
                            .setHeader("share_id", id)
                            .build(),
                    //arg有大用处
                    auditDTO);

        } else {
            this.auditByIdInDB(id, auditDTO);
        }
        return share;
    }

    /**
     * 审批
     *
     * @param id
     * @param auditDTO
     */
    public void auditByIdInDB(Integer id, ShareAuditDTO auditDTO) {
        Share share = Share.builder()
                .id(id)
                .auditStatus(auditDTO.getAuditStatusEnum().toString())
                .reason(auditDTO.getReason())
                .build();
        this.shareMapper.updateByPrimaryKeySelective(share);
    }

    @Transactional(rollbackFor = Exception.class)
    public void auditByIdWithRoketMqlog(Integer id, ShareAuditDTO auditDTO, String transactionId) {
        this.auditByIdInDB(id, auditDTO);
        this.rocketmqTransactionLogMapper.insertSelective(
                RocketmqTransactionLog.builder()
                        .transactionId(transactionId)
                        .log("审核分享..")
                        .build()
        );
    }
}

2.5. RocketMQ 事务消息监听

package com.gblfy.lyrocketmq.listener;

import com.gblfy.common.dto.ShareAuditDTO;
import com.gblfy.lyrocketmq.entity.RocketmqTransactionLog;
import com.gblfy.lyrocketmq.mapper.RocketmqTransactionLogMapper;
import com.gblfy.lyrocketmq.service.ShareService;
import lombok.RequiredArgsConstructor;
import org.apache.rocketmq.spring.annotation.RocketMQTransactionListener;
import org.apache.rocketmq.spring.core.RocketMQLocalTransactionListener;
import org.apache.rocketmq.spring.core.RocketMQLocalTransactionState;
import org.apache.rocketmq.spring.support.RocketMQHeaders;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;

@RocketMQTransactionListener
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class AddBonusTransactionListener implements RocketMQLocalTransactionListener {
    private final ShareService shareService;
    private final RocketmqTransactionLogMapper rocketmqTransactionLogMapper;

    /**
     * 执行本地事务
     *
     * @param msg 消息header信息
     * @param arg 消息体
     * @return
     */
    @Override
    public RocketMQLocalTransactionState executeLocalTransaction(Message msg, Object arg) {

        MessageHeaders headers = msg.getHeaders();
        String transactionId = (String) headers.get(RocketMQHeaders.TRANSACTION_ID);
        Integer share_id = Integer.valueOf((String) headers.get("share_id"));

        try {
            this.shareService.auditByIdWithRoketMqlog(share_id, (ShareAuditDTO) arg, transactionId);
            return RocketMQLocalTransactionState.COMMIT;
        } catch (Exception e) {
            e.printStackTrace();
            return RocketMQLocalTransactionState.ROLLBACK;
        }
    }

    /**
     * 本地事务的检查，检查本地事务是否成功
     *
     * @param msg
     * @return
     */
    @Override
    public RocketMQLocalTransactionState checkLocalTransaction(Message msg) {
        MessageHeaders headers = msg.getHeaders();
        String transactionId = (String) headers.get(RocketMQHeaders.TRANSACTION_ID);
        RocketmqTransactionLog rocketmqTransactionLog = this.rocketmqTransactionLogMapper.selectOne(
                RocketmqTransactionLog.builder()
                        .transactionId(transactionId).build()
        );
        if (rocketmqTransactionLog != null) {
            return RocketMQLocalTransactionState.COMMIT;
        }
        return RocketMQLocalTransactionState.ROLLBACK;
    }
}

详细见源码：本文底部

三、用户中心（客户端）

消息消费端代码编写

3.1. 依赖

<!--集成rocketmq-->
        <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
            <version>2.2.0</version>
        </dependency>

3.2.配置
  • 项目内部yml配置

server:
  port: 9000
spring:
  application:
    # 应用名称
    name: ly-product
  profiles:
    # 环境配置
    active: dev
  cloud:
    nacos:
      discovery:
        # 服务注册地址
        server-addr: nacos.server.com:8848
      config:
        # 配置中心地址
        server-addr: nacos.server.com:8848
        # 配置文件格式
        file-extension: yml
        # 共享配置
        shared-configs:
          - application-${spring.profiles.active}.${spring.cloud.nacos.config.file-extension}

  • nacos服务端配置

rocketmq:
  name-server: 127.0.0.1:9876

3.3. 消息监听

package com.gblfy.product.listenner;

import com.gblfy.common.dto.UserAddBonusMsgDTO;
import com.gblfy.product.entity.BonusEventLog;
import com.gblfy.product.entity.User;
import com.gblfy.product.mapper.BonusEventLogMapper;
import com.gblfy.product.mapper.UserMapper;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Date;

@Slf4j
@Service
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
@RocketMQMessageListener(topic = "tx-add-bonus-group", consumerGroup = "consumer-group")
public class AddBonusListener implements RocketMQListener<UserAddBonusMsgDTO> {

    private final UserMapper userMapper;
    private final BonusEventLogMapper bonusEventLogMapper;

    @Override
    public void onMessage(UserAddBonusMsgDTO message) {
        // 1. 为用户添加积分
        Integer userId = message.getUserId();
        Integer bonus = message.getBonus();

        User user = this.userMapper.selectByPrimaryKey(userId);
        user.setBonus(user.getBonus() + bonus);
        this.userMapper.updateByPrimaryKeySelective(user);

        // 2.记录日志到bonus_event_log表中
        this.bonusEventLogMapper.insert(
                BonusEventLog.builder()
                        .userId(userId)
                        .value(bonus)
                        .event("CONTRIBUTE")
                        .createTime(new Date())
                        .description("投稿加积分...")
                        .build()
        );

        log.info("积分添加完毕...");
    }
}

开源项目：

​​https://gitee.com/gb_90/micro-service-parent​​


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