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README
Apache-2.0

flow-rule-engine

介绍

数据处理规则引擎,参考thingsboard中的规则引擎

技术栈

  • SpringBoot
  • Mybatis-plus
  • Jackson
  • Lombok
  • PostgreSQL

选用mybatis而非jpa的原因:

国内开发人员对jpa的使用并没有tb团队开发人员那么好。mybatis简单易上手。

如果是考虑jpa的动态表生成,项目里面实现类installService用于数据库表结构创建。

如果是考虑jpa的简单单表查询,mybatis-plus也能实现。

软件架构

组件说明

module 说明
actor-core actor模型核心实现
application 启动类
dao 数据库映射层
engine-api 规则引擎服务
engine-components 规则模块
service 核心业务实现
ui 页面
webapi web接口

组件关系

使用说明

启动类

application 的模块里面的启动类 RuleEngineInstallermain 方法为安装数据库类

application 的模块里面的启动类 RuleEngineApplicationmain 方法为启动类

测试用例

application 的模块下的 RuleEngineFlowIntegrationTest 测试方法

后端设计

  • 取消tb中租户 Tenant 的概念,改为 RuletenantId -> ruleId

  • 取消 EntityId 的设计,因为tb里面的所有实体的 id 都有一个 EntityType 对应。此作用是在 EntityRelation 关联表里面标记出 fromto 。抽取出单独的规则引擎之后,关联表就没有那么多了,只是一个节点与规则的关系。将所有的 id 改为了 String 类型

  • 初步版本删除了多余的 Actor 事件。仅保留了最基础的规则流转,RuleNode -> RuleChain -> RuleNode

  • 取消了 root 规则引擎的概念,tb中一个 Tenant 中只能有一个 root 的规则流程入口。现改为项目启动加载所有的规则流程,根据发送消息体中的 ruleId 执行不同的规则流程。

功能列表

  • 框架搭建,规则节点扩展开发
  • 规则引擎数据流转
  • 流程持久化
  • 组件持久化
  • 规则引擎修改动态加载
  • 数据流转:节点到节点,节点到规则链
  • 数据流转:1对1,1对N
  • 数据流转日志记录
  • js执行引擎
  • 组件动态加载
  • 集群模式
  • 前端页面

前端设计

流程绘制组件技术选型

https://github.com/ghostiam/vue-blocks

优点 缺点
功能较匹配,支持不同类型的节点不同的修改框 不支持连接线上携带数据,不支持导入导出json格式,连线无法删除,需要二次开发实现。

https://github.com/Jeffreyrn/vue-simple-flowchart

优点 缺点
连线可以删除 不支持动态节点动态修改弹窗,需要二次开发实现

https://github.com/guozhaolong/wfd-vue

优点 缺点
完成度较高,使用G6框架实现 功能优点多余需要删减,按键没有绑定,没有框选,需要二次开发。

流程功能列表

  • 动态节点加载

  • 动态节点配置

  • 流程图的配置json保存与恢复

  • 连线的信息传递

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数据处理规则引擎,参考thingsboard中的规则引擎 展开 收起
Java
Apache-2.0
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