次のステートマシンがあります。
@Configuration
@EnableStateMachineFactory
public class StateMachineConfig extends EnumStateMachineConfigurerAdapter<GameStep, GameEventType> {
@Autowired
private GameStateService gameService;
@Autowired
private WordsGameService wordsGameService;
@Override
public void configure(StateMachineStateConfigurer<GameStep, GameEventType> states) throws Exception {
states.withStates().initial(GAME_STARTED, initGame())
.state(WAITING_FOR_PLAYERS, Arrays.asList(initPlayers(), setPlayersConfirmedFalse()), Collections.singletonList(informPlayers()))
.state(WORDS_STARTED, setPlayersConfirmedFalse(), informPlayers())
.state(WORDS_ENDED, null, informPlayers())
.state(EQUATIONS_STARTED, setPlayersConfirmedFalse(), informPlayers())
.state(EQUATIONS_ENDED, null, informPlayers())
;
}
@Bean
public Action<GameStep, GameEventType> initGame() {
return context -> {
GameState game = gameService.createNewGameState(null, null);
context.getExtendedState().getVariables().put("game", game);
};
}
@Bean
public Action<GameStep, GameEventType> setPlayersConfirmedFalse() {
return context -> {
GameState game = (GameState) context.getExtendedState().getVariables().get("game");
game.getFirstPlayer().setConfirmedToPlay(false);
game.getSecondPlayer().setConfirmedToPlay(false);
};
}
@Bean
public Action<GameStep, GameEventType> initPlayers() {
return context -> {
PlayersJoinedMessage message = context.getMessageHeaders().get("message", PlayersJoinedMessage.class);
GameState game = getGameFromHeader(context);
game.setFirstPlayer(new Player(message.getFirstPlayer(), PlayerPosition.FIRST));
game.setSecondPlayer(new Player(message.getSecondPlayer(), PlayerPosition.SECOND));
};
}
private GameState getGameFromHeader(StateContext<GameStep, GameEventType> context) {
return (GameState) context.getExtendedState().getVariables().get("game");
}
@Override
public void configure(StateMachineTransitionConfigurer<GameStep, GameEventType> transitions)
throws Exception {
transitions
.withExternal().source(GAME_STARTED).target(WAITING_FOR_PLAYERS).event(PLAYERS_JOINED)
.and()
.withExternal().source(WAITING_FOR_PLAYERS).target(WORDS_STARTED).event(START_CONFIRMATION).guard(bothPlayersConfirmed())
.and()
.withExternal().source(WORDS_STARTED).target(WORDS_ENDED).event(SEND_WORD).guard(sendWord())
.and()
.withExternal().source(WORDS_STARTED).target(WORDS_ENDED).event(TIME_EXPIRED)
.and()
.withInternal().source(WORDS_STARTED).action(timerAction()).timerOnce(5000)
.and()
.withExternal().source(WORDS_ENDED).target(EQUATIONS_STARTED).event(TIME_EXPIRED)
.and()
.withInternal().source(WORDS_ENDED).action(timerAction()).timerOnce(5000)
.and()
.withExternal().source(EQUATIONS_STARTED).target(EQUATIONS_ENDED).event(SEND_EQUATION).guard(bothPlayersConfirmed())
.and()
.withExternal().source(EQUATIONS_STARTED).target(EQUATIONS_ENDED).event(TIME_EXPIRED)
.and()
.withInternal().source(EQUATIONS_STARTED).action(timerAction()).timerOnce(155000)
//more games
;
}
@Bean
public Guard<GameStep, GameEventType> sendWord() {
return context -> {
ChangeGameMessage message = context.getMessage().getHeaders().get("message", ChangeGameMessage.class);
GameState gameState = getGameFromHeader(context);
int points = wordsGameService.checkWord(gameState.getGame().getWordsGame(), message.getGameEvent().getMessage().split(","));
Player player = gameState.getPlayerByName(message.getPlayer());
player.setWordsPoints(points);
return gameState.getFirstPlayer().getWordsPoints() != null && gameState.getSecondPlayer().getWordsPoints() != null;
};
}
@Override
public void configure(StateMachineConfigurationConfigurer<GameStep, GameEventType> config)
throws Exception {
config
.withConfiguration()
.autoStartup(true)
// .taskExecutor(new SimpleAsyncTaskExecutor())
// .taskScheduler(new ConcurrentTaskScheduler())
.listener(listener());
}
@Bean
public StateMachineListener<GameStep, GameEventType> listener() {
return new StateMachineListenerAdapter<GameStep, GameEventType>() {
@Override
public void stateChanged(State<GameStep, GameEventType> from, State<GameStep, GameEventType> to) {
System.out.println("State changed to " + to.getId());
}
};
}
@Bean
public Guard<GameStep, GameEventType> bothPlayersConfirmed() {
return context -> {
ChangeGameMessage message = context.getMessage().getHeaders().get("message", ChangeGameMessage.class);
GameState gameState = getGameFromHeader(context);
Player player = gameState.getPlayerByName(message.getPlayer());
player.setConfirmedToPlay(true);
return gameState.getFirstPlayer().getConfirmedToPlay() && gameState.getSecondPlayer().getConfirmedToPlay();
};
}
@Bean
public Action<GameStep, GameEventType> timerAction() {
return context -> {
System.out.println("timer event");
// informPlayers().execute(context);
context.getStateMachine().sendEvent(TIME_EXPIRED);
};
}
@Bean
public Action<GameStep, GameEventType> informPlayers() {
return new Action<GameStep, GameEventType>() {
@Autowired
private SimpMessagingTemplate messagingTemplate;
@Override
public void execute(StateContext<GameStep, GameEventType> context) {
GameState game = context.getExtendedState().get("game", GameState.class);
messagingTemplate.convertAndSendToUser(game.getFirstPlayer().getName(), "/queue/eureka", game);
messagingTemplate.convertAndSendToUser(game.getSecondPlayer().getName(), "/queue/eureka", game);
}
};
}
//
// @Bean(name = StateMachineSystemConstants.TASK_EXECUTOR_BEAN_NAME)
// public TaskExecutor taskExecutor() {
// ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
// taskExecutor.setCorePoolSize(5);
// return taskExecutor;
// }
}
問題は、timerAction()トリガーされた場合、アクションinformPlayers()が中断されることです。ガードが true を返しinformPlayers()たときに状態が遷移する場合は正しく呼び出されるため、遷移の方法に問題があります。スタックトレース ：bothPlayersConfirmed()timerOnce()
State changed to EQUATIONS_ENDED
timer event
2016-06-24 16:43:39.670 ERROR 83865 --- [pool-2-thread-1] o.s.statemachine.state.ObjectState : Action execution resulted error
org.springframework.messaging.MessageDeliveryException: nested exception is java.lang.InterruptedException
at org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler$SystemStompConnectionHandler.forward(StompBrokerRelayMessageHandler.java:951)
at org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler.handleMessageInternal(StompBrokerRelayMessageHandler.java:521)
at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:238)
at org.springframework.messaging.support.ExecutorSubscribableChannel$SendTask.run(ExecutorSubscribableChannel.java:135)
at org.springframework.messaging.support.ExecutorSubscribableChannel.sendInternal(ExecutorSubscribableChannel.java:91)
at org.springframework.messaging.support.AbstractMessageChannel.send(AbstractMessageChannel.java:117)
at org.springframework.messaging.support.AbstractMessageChannel.send(AbstractMessageChannel.java:104)
at org.springframework.messaging.simp.SimpMessagingTemplate.sendInternal(SimpMessagingTemplate.java:184)
at org.springframework.messaging.simp.SimpMessagingTemplate.doSend(SimpMessagingTemplate.java:159)
at org.springframework.messaging.simp.SimpMessagingTemplate.doSend(SimpMessagingTemplate.java:47)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:105)
at org.springframework.messaging.simp.user.UserDestinationMessageHandler.handleMessage(UserDestinationMessageHandler.java:219)
at org.springframework.messaging.support.ExecutorSubscribableChannel$SendTask.run(ExecutorSubscribableChannel.java:135)
at org.springframework.messaging.support.ExecutorSubscribableChannel.sendInternal(ExecutorSubscribableChannel.java:91)
at org.springframework.messaging.support.AbstractMessageChannel.send(AbstractMessageChannel.java:117)
at org.springframework.messaging.support.AbstractMessageChannel.send(AbstractMessageChannel.java:104)
at org.springframework.messaging.simp.SimpMessagingTemplate.sendInternal(SimpMessagingTemplate.java:184)
at org.springframework.messaging.simp.SimpMessagingTemplate.doSend(SimpMessagingTemplate.java:159)
at org.springframework.messaging.simp.SimpMessagingTemplate.doSend(SimpMessagingTemplate.java:47)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:105)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.convertAndSend(AbstractMessageSendingTemplate.java:143)
at org.springframework.messaging.simp.SimpMessagingTemplate.convertAndSendToUser(SimpMessagingTemplate.java:224)
at org.springframework.messaging.simp.SimpMessagingTemplate.convertAndSendToUser(SimpMessagingTemplate.java:215)
at org.springframework.messaging.simp.SimpMessagingTemplate.convertAndSendToUser(SimpMessagingTemplate.java:201)
at com.slagalica.configuration.StateMachineConfig$3.execute(StateMachineConfig.java:190)
at org.springframework.statemachine.state.ObjectState.exit(ObjectState.java:131)
at org.springframework.statemachine.support.AbstractStateMachine.exitFromState(AbstractStateMachine.java:1036)
at org.springframework.statemachine.support.AbstractStateMachine.exitCurrentState(AbstractStateMachine.java:991)
at org.springframework.statemachine.support.AbstractStateMachine.setCurrentState(AbstractStateMachine.java:868)
at org.springframework.statemachine.support.AbstractStateMachine.switchToState(AbstractStateMachine.java:752)
at org.springframework.statemachine.support.AbstractStateMachine.access$200(AbstractStateMachine.java:72)
at org.springframework.statemachine.support.AbstractStateMachine$2.transit(AbstractStateMachine.java:293)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.handleTriggerTrans(DefaultStateMachineExecutor.java:213)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.processTriggerQueue(DefaultStateMachineExecutor.java:356)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.access$100(DefaultStateMachineExecutor.java:57)
at org.springframework.statemachine.support.DefaultStateMachineExecutor$1.run(DefaultStateMachineExecutor.java:242)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.scheduleEventQueueProcessing(DefaultStateMachineExecutor.java:261)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.access$500(DefaultStateMachineExecutor.java:57)
at org.springframework.statemachine.support.DefaultStateMachineExecutor$1.run(DefaultStateMachineExecutor.java:255)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.scheduleEventQueueProcessing(DefaultStateMachineExecutor.java:261)
at org.springframework.statemachine.support.DefaultStateMachineExecutor.access$500(DefaultStateMachineExecutor.java:57)
at org.springframework.statemachine.support.DefaultStateMachineExecutor$2.triggered(DefaultStateMachineExecutor.java:423)
at org.springframework.statemachine.trigger.CompositeTriggerListener.triggered(CompositeTriggerListener.java:34)
at org.springframework.statemachine.trigger.TimerTrigger.notifyTriggered(TimerTrigger.java:115)
at org.springframework.statemachine.trigger.TimerTrigger.access$000(TimerTrigger.java:33)
at org.springframework.statemachine.trigger.TimerTrigger$1.run(TimerTrigger.java:109)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.InterruptedException: null
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2151)
at reactor.rx.Promise.await(Promise.java:465)
at reactor.rx.Promise.await(Promise.java:440)
at org.springframework.messaging.tcp.reactor.AbstractPromiseToListenableFutureAdapter.get(AbstractPromiseToListenableFutureAdapter.java:76)
at org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler$SystemStompConnectionHandler.forward(StompBrokerRelayMessageHandler.java:946)
... 56 common frames omitted
State changed to EQUATIONS_ENDED