LoggingPersistentFSM
Stackable trait for akka.actor.FSM which adds a rolling event log and debug logging capabilities (analogous to akka.event.LoggingReceive).
- Deprecated
- Source:
- PersistentFSMBase.scala
Type members
Inherited classlikes
Inherited types
Value members
Concrete methods
Retrieve current rolling log in oldest-first order. The log is filled with each incoming event before processing by the user supplied state handler. The log entries are lost when this actor is restarted.
Retrieve current rolling log in oldest-first order. The log is filled with each incoming event before processing by the user supplied state handler. The log entries are lost when this actor is restarted.
- Source:
- PersistentFSMBase.scala
Inherited methods
Cancel named timer, ensuring that the message is not subsequently delivered (no race).
Cancel named timer, ensuring that the message is not subsequently delivered (no race).
- Value parameters:
- name
of the timer to cancel
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Sends the supplied message to all current listeners using the provided sender() as sender.
Sends the supplied message to all current listeners using the provided sender() as sender.
- Inherited from:
- Listeners
- Source:
- Listeners.scala
Produce transition to other state. Return this from a state function in order to effect the transition.
Produce transition to other state. Return this from a state function in order to effect the transition.
This method always triggers transition events, even for A -> A
transitions.
If you want to stay in the same state without triggering an state transition event use stay instead.
- Value parameters:
- nextStateName
state designator for the next state
- Returns:
state transition descriptor
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Inquire whether the named timer is still active. Returns true unless the timer does not exist, has previously been canceled or if it was a single-shot timer whose message was already received.
Inquire whether the named timer is still active. Returns true unless the timer does not exist, has previously been canceled or if it was a single-shot timer whose message was already received.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Chain this into the receive function.
Chain this into the receive function.
def receive = listenerManagement orElse …
- Inherited from:
- Listeners
- Source:
- Listeners.scala
By default PersistentFSM.Failure is logged at error level and other reason types are not logged. It is possible to override this behavior.
By default PersistentFSM.Failure is logged at error level and other reason types are not logged. It is possible to override this behavior.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Return next state data (available in onTransition handlers)
Return next state data (available in onTransition handlers)
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Set handler which is called upon termination of this FSM actor. Calling this method again will overwrite the previous contents.
Set handler which is called upon termination of this FSM actor. Calling this method again will overwrite the previous contents.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Set handler which is called upon each state transition, i.e. not when staying in the same state. This may use the pair extractor defined in the FSM companion object like so:
Set handler which is called upon each state transition, i.e. not when staying in the same state. This may use the pair extractor defined in the FSM companion object like so:
onTransition { case Old -> New => doSomething }
It is also possible to supply a 2-ary function object:
onTransition(handler _) private def handler(from: S, to: S) { ... }
The underscore is unfortunately necessary to enable the nicer syntax shown above (it uses the implicit conversion total2pf under the hood).
Multiple handlers may be installed, and every one of them will be called, not only the first one matching.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
User overridable callback: By default it calls preStart()
.
User overridable callback: By default it calls preStart()
.
- Value parameters:
- reason
the Throwable that caused the restart to happen Is called right AFTER restart on the newly created Actor to allow reinitialization after an Actor crash.
- Inherited from:
- Actor
- Source:
- Actor.scala
Call onTermination
hook; if you want to retain this behavior when
overriding make sure to call super.postStop()
.
Call onTermination
hook; if you want to retain this behavior when
overriding make sure to call super.postStop()
.
Please note that this method is called by default from preRestart()
,
so override that one if onTermination
shall not be called during
restart.
- Definition Classes
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Scala API: User overridable callback: '''By default it disposes of all children and then calls postStop()
.'''
Scala API: User overridable callback: '''By default it disposes of all children and then calls postStop()
.'''
- Value parameters:
- message
optionally the current message the actor processed when failing, if applicable Is called on a crashed Actor right BEFORE it is restarted to allow clean up of resources before Actor is terminated.
- reason
the Throwable that caused the restart to happen
- Inherited from:
- Actor
- Source:
- Actor.scala
User overridable callback.
User overridable callback.
Is called when an Actor is started. Actors are automatically started asynchronously when created. Empty default implementation.
- Inherited from:
- Actor
- Source:
- Actor.scala
The reference sender Actor of the last received message.
Is defined if the message was sent from another Actor,
else deadLetters
in akka.actor.ActorSystem.
The reference sender Actor of the last received message.
Is defined if the message was sent from another Actor,
else deadLetters
in akka.actor.ActorSystem.
WARNING: Only valid within the Actor itself, so do not close over it and publish it to other threads!
- Inherited from:
- Actor
- Source:
- Actor.scala
Set state timeout explicitly. This method can safely be used from within a state handler.
Set state timeout explicitly. This method can safely be used from within a state handler.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Start a timer that will send msg
once to the self
actor after
the given delay
.
Start a timer that will send msg
once to the self
actor after
the given delay
.
Each timer has a name
and if a new timer with same name
is started
the previous is cancelled. It is guaranteed that a message from the
previous timer is not received, even if it was already enqueued
in the mailbox when the new timer was started.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Schedules a message to be sent repeatedly to the self
actor with a
given frequency.
Schedules a message to be sent repeatedly to the self
actor with a
given frequency.
It will compensate the delay for a subsequent message if the sending of previous message was delayed more than specified. In such cases, the actual message interval will differ from the interval passed to the method.
If the execution is delayed longer than the interval
, the subsequent message will
be sent immediately after the prior one. This also has the consequence that after
long garbage collection pauses or other reasons when the JVM was suspended all
"missed" messages will be sent when the process wakes up again.
In the long run, the frequency of messages will be exactly the reciprocal of the
specified interval
.
Warning: startTimerAtFixedRate
can result in bursts of scheduled messages after long
garbage collection pauses, which may in worst case cause undesired load on the system.
Therefore startTimerWithFixedDelay
is often preferred.
Each timer has a name
and if a new timer with same name
is started
the previous is cancelled. It is guaranteed that a message from the
previous timer is not received, even if it was already enqueued
in the mailbox when the new timer was started.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Schedules a message to be sent repeatedly to the self
actor with a
fixed delay
between messages.
Schedules a message to be sent repeatedly to the self
actor with a
fixed delay
between messages.
It will not compensate the delay between messages if scheduling is delayed
longer than specified for some reason. The delay between sending of subsequent
messages will always be (at least) the given delay
.
In the long run, the frequency of messages will generally be slightly lower than
the reciprocal of the specified delay
.
Each timer has a name
and if a new timer with same name
is started
the previous is cancelled. It is guaranteed that a message from the
previous timer is not received, even if it was already enqueued
in the mailbox when the new timer was started.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Set initial state. Call this method from the constructor before the initialize method. If different state is needed after a restart this method, followed by initialize, can be used in the actor life cycle hooks akka.actor.Actor#preStart and akka.actor.Actor#postRestart.
Set initial state. Call this method from the constructor before the initialize method. If different state is needed after a restart this method, followed by initialize, can be used in the actor life cycle hooks akka.actor.Actor#preStart and akka.actor.Actor#postRestart.
- Value parameters:
- stateData
initial state data
- stateName
initial state designator
- timeout
state timeout for the initial state, overriding the default timeout for that state
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Return current state data (i.e. object of type D)
Return current state data (i.e. object of type D)
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Return current state name (i.e. object of type S)
Return current state name (i.e. object of type S)
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Produce "empty" transition descriptor. Return this from a state function when no state change is to be effected.
Produce "empty" transition descriptor. Return this from a state function when no state change is to be effected.
No transition event will be triggered by stay.
If you want to trigger an event like S -> S
for onTransition
to handle use goto
instead.
- Returns:
descriptor for staying in current state
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Produce change descriptor to stop this FSM actor including specified reason.
Produce change descriptor to stop this FSM actor including specified reason.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Produce change descriptor to stop this FSM actor including specified reason.
Produce change descriptor to stop this FSM actor including specified reason.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Produce change descriptor to stop this FSM actor with reason "Normal".
Produce change descriptor to stop this FSM actor with reason "Normal".
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
User overridable definition the strategy to use for supervising child actors.
User overridable definition the strategy to use for supervising child actors.
- Inherited from:
- Actor
- Source:
- Actor.scala
User overridable callback.
User overridable callback.
Is called when a message isn't handled by the current behavior of the actor by default it fails with either a akka.actor.DeathPactException (in case of an unhandled akka.actor.Terminated message) or publishes an akka.actor.UnhandledMessage to the actor's system's akka.event.EventStream
- Inherited from:
- Actor
- Source:
- Actor.scala
Insert a new StateFunction at the end of the processing chain for the given state. If the stateTimeout parameter is set, entering this state without a differing explicit timeout setting will trigger a StateTimeout event; the same is true when using #stay.
Insert a new StateFunction at the end of the processing chain for the given state. If the stateTimeout parameter is set, entering this state without a differing explicit timeout setting will trigger a StateTimeout event; the same is true when using #stay.
- Value parameters:
- stateFunction
partial function describing response to input
- stateName
designator for the state
- stateTimeout
default state timeout for this state
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Set handler which is called upon reception of unhandled messages. Calling this method again will overwrite the previous contents.
Set handler which is called upon reception of unhandled messages. Calling this method again will overwrite the previous contents.
The current state may be queried using stateName
.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Deprecated and Inherited methods
Schedule named timer to deliver message after given delay, possibly repeating. Any existing timer with the same name will automatically be canceled before adding the new timer.
Schedule named timer to deliver message after given delay, possibly repeating. Any existing timer with the same name will automatically be canceled before adding the new timer.
- Value parameters:
- msg
message to be delivered
- name
identifier to be used with cancelTimer()
- repeat
send once if false, scheduleAtFixedRate if true
- timeout
delay of first message delivery and between subsequent messages
- Deprecated
[Since version 2.6.0]
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Inherited fields
This extractor is just convenience for matching a (S, S) pair, including a reminder what the new state is.
This extractor is just convenience for matching a (S, S) pair, including a reminder what the new state is.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
This case object is received in case of a state timeout.
This case object is received in case of a state timeout.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala
Implicits
Inherited implicits
Scala API: Stores the context for this actor, including self, and sender.
It is implicit to support operations such as forward
.
Scala API: Stores the context for this actor, including self, and sender.
It is implicit to support operations such as forward
.
WARNING: Only valid within the Actor itself, so do not close over it and publish it to other threads!
akka.actor.ActorContext is the Scala API. getContext
returns a
akka.actor.AbstractActor.ActorContext, which is the Java API of the actor
context.
- Inherited from:
- Actor
- Source:
- Actor.scala
The 'self' field holds the ActorRef for this actor.
The 'self' field holds the ActorRef for this actor.
Can be used to send messages to itself:
self ! message
- Inherited from:
- Actor
- Source:
- Actor.scala
Convenience wrapper for using a total function instead of a partial function literal. To be used with onTransition.
Convenience wrapper for using a total function instead of a partial function literal. To be used with onTransition.
- Inherited from:
- PersistentFSMBase
- Source:
- PersistentFSMBase.scala