workflow

1. workflow是什么

谈到流程引擎，当前市面上大部分是Activiti、Flowable、Camunda等面向OA场景， 功能强大且有比较完整的生态的工作流引擎（平台），同时因为OA复杂的场景，库表关联操作非常多， 但是对于其它业务场景，引擎运维以及学习成本较高，性能不可避免有一定损失， 在于其他业务结合这块需要做的工作也非常多，不适用于C端场景。

workflow是一个非常轻量、高性能、可集成、可扩展的纯内存流程引擎，支持并行网关、排它网关。

workflow能让开发人员通过配置Yaml实现自己的业务流程，将复杂的业务逻辑可视化，为业务设计人员与开发工程师架起了一座桥梁。

2. Design Intention

1. 希望为业务开发提供端至端，从设计至实现的业务流程解决方案。
2. 提供多种流程引擎，实现从战略至商业能力，商业能力至业务流程，业务流程至系统，并最终实现业务的可视化全局架构。
3. 设计高效的执行引擎，实现对服务的快速组合或扩展，提升idea至value的研发响应与交互速度。

3. Features

1. 高性能：纯内存操作，业务系统只要记录状态即可。
2. 丰富的应用场景：可用在流程审批、交易、履约、资金等多个业务场景。
3. 可集成：轻量、简洁的设计使得可以极其方便地集成到各个解决方案和业务场景中。

4. Quick Start

使用demo

processDefinition:
  id: "performanceReview"
  startState: "Start"
  states:
    - id: "Start"
      type: "UserTask"
      nextState: "UserTask1"
      assigneeRole: "Manager"
      assigneeUser: "181987"
      extendInformation:
        allowEditingResouces:
          - review_base_info
        actions:
          - submit
    - id: "UserTask1"
      type: "UserTask"
      nextState: "ReviewGateway"
      assigneeRole: "Manager"
      assigneeUser: "181987"
      extendInformation:
        allowEditingResouces:
          - review_base_info
        actions:
          - submit

    - id: "ReviewGateway"
      type: "ExclusiveGateway"
      nextState: null
      conditions:
        - nextStateConditionParser: "com.damon.workflow.complex.parser.HighPerformanceReviewConditionParser"
          nextState: "HighPerformanceReview"
        - nextStateConditionParser: "com.damon.workflow.complex.parser.StandardReviewConditionParser"
          nextState: "StandardReview"

    - id: "HighPerformanceReview"
      type: "UserTask"
      assigneeRole: "Manager"
      assigneeUser: "181989"
      nextState: "UserTask2"
      extendInformation:
        allowEditingResouces:
          - evaluation_info
          - performance_level
        actions:
          - agree
          - reject

    - id: "StandardReview"
      type: "UserTask"
      assigneeRole: "Manager"
      assigneeUser: "181990"
      nextState: "UserTask2"
      extendInformation:
        allowEditingResouces:
        actions:
          - agree
          - reject


    - id: "UserTask2"
      type: "UserTask"
      nextState: "ParallelStartGateway"
      assigneeRole: "Manager"
      assigneeUser: "181987"
      extendInformation:
        allowEditingResouces:
          - review_base_info
        actions:
          - submit


    - id: "ParallelStartGateway"
      type: "ParallelStartGateway"
      nextState: null
      conditions:
        - condition: "true"
          nextState: "UserTask3"
        - condition: "true"
          nextState: "UserTask4"

    - id: "UserTask3"
      type: "UserTask"
      nextState: "ParallelEndGateway"
      assigneeRole: "Manager"
      assigneeUser: "181987"
      extendInformation:
        allowEditingResouces:
          - review_base_info
        actions:
          - submit

    - id: "UserTask4"
      type: "UserTask"
      nextState: "ParallelEndGateway"
      assigneeRole: "Manager"
      assigneeUser: "181987"
      extendInformation:
        allowEditingResouces:
          - review_base_info
        actions:
          - submit


    - id: "ParallelEndGateway"
      type: "ParallelEndGateway"
      nextStateConditionParser: "com.damon.workflow.complex.parser.StandardReviewConditionParser"
      nextState: "End"
      extendInformation:
        allowEditingResouces:
        actions:
          - agree
          - reject

    - id: "End"
      type: "End"
      nextState: null

https://github.com/654894017/workflow/tree/master/src/test/java/com/damon/workflow/complex