Package org.springframework.statemachine.support

Class ReactiveStateMachineExecutor<S,E>

java.lang.Object

org.springframework.statemachine.support.LifecycleObjectSupport

org.springframework.statemachine.support.ReactiveStateMachineExecutor<S,E>

Type Parameters:

S - the type of state

E - the type of event

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.context.Lifecycle, org.springframework.context.Phased, org.springframework.context.SmartLifecycle, StateMachineExecutor<S,E>, StateMachineReactiveLifecycle

public class ReactiveStateMachineExecutor<S,E>
extends LifecycleObjectSupport
implements StateMachineExecutor<S,E>

Default reactive implementation of a StateMachineExecutor.

Author:

Janne Valkealahti

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.statemachine.support.StateMachineExecutor

StateMachineExecutor.ExecutorExceptionHolder, StateMachineExecutor.MonoSinkStateMachineExecutorCallback, StateMachineExecutor.StateMachineExecutorCallback, StateMachineExecutor.StateMachineExecutorTransit<S,E>

Field Summary

Fields inherited from interface org.springframework.context.SmartLifecycle

DEFAULT_PHASE

Constructor Summary

Constructors

Constructor	Description
ReactiveStateMachineExecutor(StateMachine<S,E> stateMachine, StateMachine<S,E> relayStateMachine, Collection<Transition<S,E>> transitions, Map<Trigger<S,E>,Transition<S,E>> triggerToTransitionMap, List<Transition<S,E>> triggerlessTransitions, Transition<S,E> initialTransition, org.springframework.messaging.Message<E> initialEvent, TransitionConflictPolicy transitionConflictPolicy)

Method Summary

Modifier and Type	Method	Description
void	addStateMachineInterceptor(StateMachineInterceptor<S,E> interceptor)	Adds the state machine interceptor.
protected reactor.core.publisher.Mono<Void>	doPreStartReactively()	Subclasses may implement this for pre start logic.
protected reactor.core.publisher.Mono<Void>	doPreStopReactively()	Subclasses may implement this for pre stop logic.
reactor.core.publisher.Mono<Void>	executeTriggerlessTransitions(StateContext<S,E> context, State<S,E> state)	Execute and check all triggerless transitions.
protected void	onInit()	Subclasses may implement this for initialization logic.
void	queueDeferredEvent(org.springframework.messaging.Message<E> message)	Queue deferred event.
reactor.core.publisher.Mono<Void>	queueEvent(reactor.core.publisher.Mono<org.springframework.messaging.Message<E>> message, StateMachineExecutor.StateMachineExecutorCallback callback)	Queue event.
void	setForwardedInitialEvent(org.springframework.messaging.Message<E> message)	Set initial forwarded event.
void	setInitialEnabled(boolean enabled)	Sets the if initial stage is enabled.
void	setStateMachineExecutorTransit(StateMachineExecutor.StateMachineExecutorTransit<S,E> stateMachineExecutorTransit)	Sets the state machine executor transit.

Methods inherited from class org.springframework.statemachine.support.LifecycleObjectSupport

afterPropertiesSet, destroy, doDestroy, doPostStartReactively, doPostStopReactively, getBeanFactory, getPhase, isAutoStartup, isRunning, setAutoStartup, setBeanFactory, setPhase, start, startReactively, stop, stopReactively

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.context.SmartLifecycle

stop

Methods inherited from interface org.springframework.statemachine.support.StateMachineReactiveLifecycle

startReactively, stopReactively

Constructor Details

ReactiveStateMachineExecutor

public ReactiveStateMachineExecutor(StateMachine<S,E> stateMachine,
 StateMachine<S,E> relayStateMachine,
 Collection<Transition<S,E>> transitions,
 Map<Trigger<S,E>,Transition<S,E>> triggerToTransitionMap,
 List<Transition<S,E>> triggerlessTransitions,
 Transition<S,E> initialTransition,
 org.springframework.messaging.Message<E> initialEvent,
 TransitionConflictPolicy transitionConflictPolicy)

Method Details

onInit

protected void onInit()
               throws Exception

Description copied from class: LifecycleObjectSupport

Subclasses may implement this for initialization logic. Called during the InitializingBean phase.

Overrides:

onInit in class LifecycleObjectSupport

Throws:

Exception - exception

doPreStartReactively

protected reactor.core.publisher.Mono<Void> doPreStartReactively()

Description copied from class: LifecycleObjectSupport

Subclasses may implement this for pre start logic.

Overrides:

doPreStartReactively in class LifecycleObjectSupport

Returns:

the mono for completion

doPreStopReactively

protected reactor.core.publisher.Mono<Void> doPreStopReactively()

Description copied from class: LifecycleObjectSupport

Subclasses may implement this for pre stop logic.

Overrides:

doPreStopReactively in class LifecycleObjectSupport

Returns:

the mono for completion

queueDeferredEvent

public void queueDeferredEvent(org.springframework.messaging.Message<E> message)

Description copied from interface: StateMachineExecutor

Queue deferred event.

Specified by:

queueDeferredEvent in interface StateMachineExecutor<S,E>

Parameters:

message - the message

executeTriggerlessTransitions

public reactor.core.publisher.Mono<Void> executeTriggerlessTransitions(StateContext<S,E> context,
 State<S,E> state)

Description copied from interface: StateMachineExecutor

Execute and check all triggerless transitions.

Specified by:

executeTriggerlessTransitions in interface StateMachineExecutor<S,E>

Parameters:

context - the state context

state - the state

Returns:

completion when handled

setInitialEnabled

public void setInitialEnabled(boolean enabled)

Description copied from interface: StateMachineExecutor

Sets the if initial stage is enabled.

Specified by:

setInitialEnabled in interface StateMachineExecutor<S,E>

Parameters:

enabled - the new flag

setForwardedInitialEvent

public void setForwardedInitialEvent(org.springframework.messaging.Message<E> message)

Description copied from interface: StateMachineExecutor

Set initial forwarded event.

Specified by:

setForwardedInitialEvent in interface StateMachineExecutor<S,E>

Parameters:

message - the forwarded message

See Also:

• StateMachineAccess.setForwardedInitialEvent(Message)

setStateMachineExecutorTransit

public void setStateMachineExecutorTransit(StateMachineExecutor.StateMachineExecutorTransit<S,E> stateMachineExecutorTransit)

Description copied from interface: StateMachineExecutor

Sets the state machine executor transit.

Specified by:

setStateMachineExecutorTransit in interface StateMachineExecutor<S,E>

Parameters:

stateMachineExecutorTransit - the state machine executor transit

addStateMachineInterceptor

public void addStateMachineInterceptor(StateMachineInterceptor<S,E> interceptor)

Description copied from interface: StateMachineExecutor

Adds the state machine interceptor.

Specified by:

addStateMachineInterceptor in interface StateMachineExecutor<S,E>

Parameters:

interceptor - the interceptor

queueEvent

public reactor.core.publisher.Mono<Void> queueEvent(reactor.core.publisher.Mono<org.springframework.messaging.Message<E>> message,
 StateMachineExecutor.StateMachineExecutorCallback callback)

Description copied from interface: StateMachineExecutor

Queue event.

Specified by:

queueEvent in interface StateMachineExecutor<S,E>

Parameters:

message - the message

callback - the executor callback

Returns:

completion when event is queued