春天statemachine卡在加入状态

Question

我想模拟现金接受机。

我的StateMachine配置如下。我省略了一些不重要的州和事件。

@Override 
public void configure(StateMachineStateConfigurer<States, Events> states) throws Exception { 
    states 
     .withStates() 
      .initial(States.INIT, initAction()) 
      .state(States.CONNECTED) 
      .and() 
      .withStates() 
       .parent(States.CONNECTED) 
       .initial(States.READY) 
       .state(States.READY) 
       .fork(States.ACCEPTING_CASH_FORK) 
       .state(States.ACCEPTING_CASH) 
       .join(States.ACCEPTING_CASH_JOIN) 
       .choice(States.PROCESSING_CASH) 
       .state(States.PRINTING_RECEIPT, printingReceiptAction(), null) 
      .and() 
      .withStates() 
       .parent(States.ACCEPTING_CASH) 
       .initial(States.BNR_CASH_IN_START) 
       .state(States.BNR_CASH_IN_END) 
       .end(States.BNR_CASH_IN_EXIT) 
      .and() 
      .withStates() 
       .parent(States.ACCEPTING_CASH) 
       .initial(States.CNR_CASH_IN_START) 
       .state(States.CNR_CASH_IN_END) 
       .end(States.CNR_CASH_IN_EXIT) 
      .and(); 
} 

@Override 
public void configure(StateMachineTransitionConfigurer<States, Events> transitions) throws Exception { 
    transitions 
     .withExternal() 
      .source(States.INIT).target(States.CONNECTED) 
      .and() 
     .withExternal() 
      .source(States.READY) 
      .target(States.ACCEPTING_CASH_FORK) 
      .event(Events.ACCEPT_CASH) 
      .and() 
     .withFork() 
      .source(States.ACCEPTING_CASH_FORK) 
      .target(States.BNR_CASH_IN_START).target(States.CNR_CASH_IN_START) 
      .and() 
     .withExternal() 
      .source(States.BNR_CASH_IN_END) 
      .target(States.BNR_CASH_IN_EXIT) 
      .event(Events.BNR_CASH_IN_END_COMPLETED) 
      .and() 
     .withExternal() 
      .source(States.CNR_CASH_IN_END) 
      .target(States.CNR_CASH_IN_EXIT) 
      .event(Events.CNR_CASH_IN_END_COMPLETED) 
      .and() 
     .withJoin() 
      .source(States.BNR_CASH_IN_EXIT).source(States.CNR_CASH_IN_EXIT).target(States.ACCEPTING_CASH_JOIN) 
      .and() 
     .withExternal() 
      .source(States.ACCEPTING_CASH_JOIN) 
      .target(States.PROCESSING_CASH) 
      .and() 
     .withChoice() 
      .source(States.PROCESSING_CASH) 
      .first(States.DISPENSING_CASH_FORK, dispensingCashGuard(), dispensingCashAction()) 
      .last(States.PRINTING_RECEIPT) 
      .and(); 
} 

我还配置了一个侦听器用于调试目的。

@Bean 
public StateMachineListener<States, Events> listener() { 
    return new StateMachineListenerAdapter<States, Events>() { 
     @Override 
     public void stateChanged(State<States, Events> from, State<States, Events> to) { 
      log.info("State change from " + (from != null ? from.getId() : from) + " to " + to.getId()); 
     } 

     @Override 
     public void stateMachineStarted(StateMachine<States, Events> stateMachine) { 
      log.info("StateMachine uuid " + stateMachine.getUuid() + " state " + stateMachine.getState().getId()); 
     } 

     @Override 
     public void transition(Transition<States, Events> transition) { 
      Trigger<States, Events> trigger = transition.getTrigger(); 
      State<States, Events> source = transition.getSource(); 
      State<States, Events> target = transition.getTarget(); 
      log.info("Transition trigger " + (trigger != null ? trigger.getEvent() : trigger) + 
       " source " + (source != null ? source.getId() : source) + 
       " target " + (target != null ? target.getId() : target) + " kind " + transition.getKind()); 
     } 

    }; 
} 

的问题是在ACCEPTING_CASH_JOIN加入其中的statemachine应该在2个状态达到BNR_CASH_IN_EXIT和CNR_CASH_IN_EXIT是英寸但在日志中statemachine没有达到它。

2017-06-30 19:59:06.891 INFO 3776 --- [  Thread-9] k.d.c.config.StateMachineConfiguration : StateMachine uuid 52e51cf0-06f0-4efa-8d05-1717bf869239 state CONNECTED 
2017-06-30 19:59:06.891 INFO 3776 --- [  Thread-9] k.d.c.config.StateMachineConfiguration : State change from null to CNR_CASH_IN_END 
2017-06-30 19:59:06.892 INFO 3776 --- [  Thread-8] k.d.c.config.StateMachineConfiguration : Transition trigger CNR_CASH_IN_END_COMPLETED source CNR_CASH_IN_END target CNR_CASH_IN_EXIT kind EXTERNAL 
2017-06-30 19:59:06.892 INFO 3776 --- [  Thread-8] k.d.c.config.StateMachineConfiguration : State change from CNR_CASH_IN_END to CNR_CASH_IN_EXIT 

2017-06-30 19:59:06.924 INFO 3776 --- [  Thread-8] k.d.c.config.StateMachineConfiguration : StateMachine uuid 52e51cf0-06f0-4efa-8d05-1717bf869239 state CONNECTED 
2017-06-30 19:59:06.924 INFO 3776 --- [  Thread-8] k.d.c.config.StateMachineConfiguration : State change from null to BNR_CASH_IN_END 
2017-06-30 19:59:07.146 INFO 3776 --- [  Thread-8] k.d.c.config.StateMachineConfiguration : Transition trigger BNR_CASH_IN_END_COMPLETED source BNR_CASH_IN_END target BNR_CASH_IN_EXIT kind EXTERNAL 
2017-06-30 19:59:07.146 INFO 3776 --- [  Thread-8] k.d.c.config.StateMachineConfiguration : State change from BNR_CASH_IN_END to BNR_CASH_IN_EXIT 

2017-06-30 19:59:27.239 DEBUG 3776 --- [ XNIO-2 task-4] k.d.c.w.rest.StateMachineQueryResource : [CONNECTED, ACCEPTING_CASH, BNR_CASH_IN_EXIT, CNR_CASH_IN_EXIT] 

最后一行是我通过调用方法上的statemachine stateMachine.getState（）检查当前状态的方式。getIds（）

Answer 1

你不介意尝试两件事情分开

1. 将这些结束状态改为正常状态。
2. 而不是结束状态加入，加入他们的父状态（ACCEPTING_CASH）。

我还没有检查是否有测试这个特定的用例来验证它是否应该工作。理论是终端状态不能有输出转换，因此连接可能不起作用。