Fix logging message when transition action throws exception

[pinguet62]

Hello,

Error during execution of Action during (internal or external) transition was not fully logged.

Builder<String, String> builder = StateMachineBuilder.builder();
builder
    .configureConfiguration()
        .withConfiguration()
            .beanFactory(beanFactory)
            .autoStartup(true);
builder
    .configureStates()
        .withStates()
            .initial("a")
            .states(new HashSet<>(asList("a", "b")));
builder
    .configureTransitions()
        .withInternal()
            .source("a")
            .event("int")
            .action(c -> { throw new RuntimeException("oups"); })
            .and()
        .withExternal()
            .source("a")
            .event("ext")
            .action(c -> { throw new RuntimeException("oups"); })
            .target("b");
StateMachine<String, String> stateMachine = builder.build();

stateMachine.sendEvent("int");
stateMachine.sendEvent("ext");

Original logging:

2017-09-17 19:18:24.331  WARN 11944 --- [           main] o.s.s.support.AbstractStateMachine       : Aborting as transition org.springframework.statemachine.transition.DefaultInternalTransition@49f5c307 caused error java.lang.RuntimeException: oups

After modification:

2017-09-17 22:40:27.867  WARN 1768 --- [           main] o.s.s.support.AbstractStateMachine       : Aborting as transition org.springframework.statemachine.transition.DefaultExternalTransition@66971f6b

java.lang.RuntimeException: oups
	at fr.pinguet62.statemachine.logging.LoggingRunner.lambda$1(LoggingRunner.java:50) [classes/:na]
	at org.springframework.statemachine.transition.AbstractTransition.executeTransitionActions(AbstractTransition.java:165) ~[spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.AbstractStateMachine$2.transit(AbstractStateMachine.java:286) ~[spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.DefaultStateMachineExecutor.handleTriggerTrans(DefaultStateMachineExecutor.java:248) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.DefaultStateMachineExecutor.processTriggerQueue(DefaultStateMachineExecutor.java:395) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.DefaultStateMachineExecutor.access$100(DefaultStateMachineExecutor.java:61) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.DefaultStateMachineExecutor$1.run(DefaultStateMachineExecutor.java:281) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.statemachine.support.DefaultStateMachineExecutor.scheduleEventQueueProcessing(DefaultStateMachineExecutor.java:300) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.DefaultStateMachineExecutor.execute(DefaultStateMachineExecutor.java:144) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.AbstractStateMachine.sendEventInternal(AbstractStateMachine.java:559) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.AbstractStateMachine.sendEvent(AbstractStateMachine.java:211) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
	at org.springframework.statemachine.support.AbstractStateMachine.sendEvent(AbstractStateMachine.java:223) [spring-statemachine-core-1.2.7.BUILD-SNAPSHOT.jar:1.2.7.BUILD-SNAPSHOT]
...

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[jvalkeal]

lgtm, thx.