springboot状态机模式

链接: 状态机和工作流的区别.
链接: 状态机引擎选型.
链接: 彻底搞懂Spring状态机原理，实现订单与物流解耦.
链接: spring statemachine收录.
链接: spring statemachine的企业可用级开发指南.
链接: Spring Statemachine 简介.
链接: 实现一个状态机引擎，教你看清DSL的本质.
链接: COLA下的cola-statemachine状态机.
链接: 爱奇艺团队-领域驱动设计框架Axon实践.
链接: COLA 4.0：应用架构的最佳实践.
链接: 阿里高级技术专家谈开源DDD框架：COLA4.1，分离架构和组件（下）.
链接: 【架构设计】无状态状态机在代码中的实践.

状态机框架

Spring Statemachine （重量级选手）1.2k+ star.
squirrel-foundation（松鼠）1.8k+ star.
cola-statemachine （可乐）6.6k+ star.

springboot合cola-statemachine 4.0.1

cola-statemachine（阿里出品）

github链接: cola-components.
gitcode链接: cola-components.

<dependency><groupId>com.alibaba.cola</groupId><artifactId>cola-component-statemachine</artifactId><version>4.0.1</version><type>jar</type>
</dependency>

package com.zm;import com.alibaba.cola.statemachine.Action;
import com.alibaba.cola.statemachine.Condition;
import com.alibaba.cola.statemachine.StateMachine;
import com.alibaba.cola.statemachine.StateMachineFactory;
import com.alibaba.cola.statemachine.builder.StateMachineBuilder;
import com.alibaba.cola.statemachine.builder.StateMachineBuilderFactory;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;@Slf4j
public class StateMachineTest {static String MACHINE_ID1 = "TestStateMachine1";static String MACHINE_ID2 = "TestStateMachine2";static String MACHINE_ID3 = "TestStateMachine3";static String MACHINE_ID4 = "TestStateMachine4";static String MACHINE_ID5 = "TestStateMachine5";static enum States {/*** 申请*/APPLY(1,"申请"),/***初审*/FIRST_TRIAL(2,"初审"),/***终审*/FINAL_JUDGMENT(3,"终审"),/***移出*/REMOVE(4,"移出");States(Integer value, String name) {this.value = value;this.name = name;}private final Integer value;private final String name;public Integer getValue() {return value;}public String getName() {return name;}}static enum Events {/*** 保存申请*/SAVE_APPLICATION,/*** 提交申请*/SUBMIT_APPLICATION,/*** 审核通过*/AUDIT_PASS,/*** 审核退回*/AUDIT_REJECT}/*** 参数*/static class Context{String operator = "flw";String entityId = "7758258";String name = "zhoumin";}@Testpublic void test(){testExternalTransitionNormal();testInternalNormal();testExternalTransitionsNormal();testExternalTransitionNormal1();testExternalTransitionNormal2();StateMachine<States, Events, Context> stateMachine1 = StateMachineFactory.get(MACHINE_ID1);StateMachine<States, Events, Context> stateMachine2 = StateMachineFactory.get(MACHINE_ID2);StateMachine<States, Events, Context> stateMachine3 = StateMachineFactory.get(MACHINE_ID3);System.out.println(stateMachine1.generatePlantUML());System.out.println(stateMachine2.generatePlantUML());System.out.println(stateMachine3.generatePlantUML());System.out.println(StateMachineFactory.get(MACHINE_ID4).generatePlantUML());System.out.println(StateMachineFactory.get(MACHINE_ID5).generatePlantUML());}/*** State：状态* Event：事件，状态由事件触发，引起变化* Transition：流转，表示从一个状态到另一个状态* External Transition：外部流转，两个不同状态之间的流转* Internal Transition：内部流转，同一个状态之间的流转* Condition：条件，表示是否允许到达某个状态* Action：动作，到达某个状态之后，可以做什么* StateMachine：状态机* ————————————————* 版权声明：本文为CSDN博主「张建飞（Frank）」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。* 原文链接：https://blog.csdn.net/significantfrank/article/details/104996419*/@Testpublic void testExternalTransitionNormal(){// 第一步：生成一个状态机builderStateMachineBuilder<States, Events, Context> builder = StateMachineBuilderFactory.create();// 第二步：设置一个外部状态转移类型的builder，并设置from\to\on\when\performbuilder.externalTransition()    // 外部状态流转.from(States.APPLY)     // 起始状态：申请.to(States.FIRST_TRIAL)        // 目的状态：初审.on(Events.SUBMIT_APPLICATION)       // 事件：提交申请.when(checkCondition()) // 流转需要校验的条件，校验不通过不会进行doAction.perform(doAction());   // 执行流转操作 这个action 我们可以按自己所需修改，比如这种Action<R,T> service的方法Service::method// 第三步：设置状态机的id和ready，并在StateMachineFactory中的stateMachineMap进行注册builder.build(MACHINE_ID1);// 第四步：触发状态机StateMachine<States, Events, Context> stateMachine = StateMachineFactory.get(MACHINE_ID1);stateMachine.showStateMachine();// 通过状态机执行 待审核状态执行审核操作，States target1 = stateMachine.fireEvent(States.APPLY, Events.SUBMIT_APPLICATION, new Context());}@Testpublic void testExternalTransitionNormal1(){StateMachineBuilder<States, Events, Context> builder = StateMachineBuilderFactory.create();builder.externalTransition().from(States.FIRST_TRIAL).to(States.FINAL_JUDGMENT).on(Events.AUDIT_PASS).when(checkCondition()).perform(doAction());builder.build(MACHINE_ID4);}@Testpublic void testExternalTransitionNormal2(){StateMachineBuilder<States, Events, Context> builder = StateMachineBuilderFactory.create();builder.externalTransition().from(States.FINAL_JUDGMENT).to(States.REMOVE).on(Events.AUDIT_PASS).when(checkCondition()).perform(doAction());builder.build(MACHINE_ID5);}/*** 状态在申请时 可以进行保存*/@Testpublic void testInternalNormal(){StateMachineBuilder<States, Events, Context> builder = StateMachineBuilderFactory.create();// 内部流转 internal transition// 假设现在只是用户补全资料，只需要进行一些更新数据操作，不需要状态流转。这种需求可以通过内部状态流转实现builder.internalTransition().within(States.APPLY).on(Events.SAVE_APPLICATION).when(checkCondition()).perform(doAction());StateMachine<States, Events, Context> stateMachine = builder.build(MACHINE_ID2);// 打印状态机里面的流程流转图谱stateMachine.showStateMachine();// 通过状态机执行 待审核状态执行审核操作，States target = stateMachine.fireEvent(States.APPLY, Events.SAVE_APPLICATION, new Context());}/*** 只要退回则回到申请箱的状态*/@Testpublic void testExternalTransitionsNormal(){StateMachineBuilder<States, Events, Context> builder = StateMachineBuilderFactory.create();// external transitions 任意一个状态builder.externalTransitions().fromAmong(States.FIRST_TRIAL, States.FINAL_JUDGMENT).to(States.APPLY).on(Events.AUDIT_REJECT).when(checkCondition()).perform(doAction());StateMachine<States, Events, Context> stateMachine = builder.build(MACHINE_ID3);// 打印状态机里面的流程流转图谱stateMachine.showStateMachine();// 通过状态机执行 待审核状态执行审核操作，States target1 = stateMachine.fireEvent(States.FIRST_TRIAL, Events.AUDIT_REJECT, new Context());States target2 = stateMachine.fireEvent(States.FINAL_JUDGMENT, Events.AUDIT_REJECT, new Context());}/*** 条件，表示是否允许到达某个状态*/private Condition<StateMachineTest.Context> checkCondition() {return (ctx) -> true; // 默认返回true}/*** 动作，到达某个状态之后，可以做什么*/private Action<StateMachineTest.States, StateMachineTest.Events, StateMachineTest.Context> doAction() {return (from, to, event, ctx)-> log.info(ctx.operator+" is operating "+ctx.entityId+" from:"+from.getName()+" to:"+to.getName()+" on:"+event+";"+ctx.name);}}

可以生成PlantUML格式

stateMachine.generatePlantUML();

springboot合Spring Statemachine 2.x

待续~

生成PlantUML图

网站链接: planttext.

idea插件

idea安装 PlantUML插件
idea直接安装：File -> Settings -> Plugins 搜索 PlantUML ，找到 PlantUML integration 并安装

经过安装包引入

下载插件包安装：地址http://plugins.jetbrains.com/plugin/7017-plantuml-integration我已经下载好，能够使用：plantuml4idea.zipctrl+ alt + s 打开setting，搜索plugins,

cola架构快速生成

链接: 阿里云代码生成.