Create new actor as child of this context with the given name, which must not be null, empty or start with “$”.
Create new actor as child of this context with the given name, which must
not be null, empty or start with “$”. If the given name is already in use,
an InvalidActorNameException
is thrown.
See akka.actor.Props for details on how to obtain a Props
object.
akka.ConfigurationException
if deployment, dispatcher
or mailbox configuration is wrong
akka.actor.InvalidActorNameException
if the given name is
invalid or already in use
Create new actor as child of this context and give it an automatically generated name (currently similar to base64-encoded integer count, reversed and with “$” prepended, may change in the future).
Create new actor as child of this context and give it an automatically generated name (currently similar to base64-encoded integer count, reversed and with “$” prepended, may change in the future).
See akka.actor.Props for details on how to obtain a Props
object.
akka.ConfigurationException
if deployment, dispatcher
or mailbox configuration is wrong
Changes the Actor's behavior to become the new 'Procedure' handler.
Changes the Actor's behavior to become the new 'Procedure' handler. This method acts upon the behavior stack as follows:
discardOld = true
it will replace the top element (i.e. the current behavior)discardOld = false
it will keep the current behavior and push the given one atopThe default of replacing the current behavior on the stack has been chosen to avoid memory
leaks in case client code is written without consulting this documentation first (i.e.
always pushing new behaviors and never issuing an unbecome()
)
Changes the Actor's behavior to become the new 'Procedure' handler.
Changes the Actor's behavior to become the new 'Procedure' handler. Replaces the current behavior on the top of the behavior stack.
Changes the Actor's behavior to become the new 'Receive' (PartialFunction[Any, Unit]) handler.
Changes the Actor's behavior to become the new 'Receive' (PartialFunction[Any, Unit]) handler. This method acts upon the behavior stack as follows:
discardOld = true
it will replace the top element (i.e. the current behavior)discardOld = false
it will keep the current behavior and push the given one atopThe default of replacing the current behavior on the stack has been chosen to avoid memory
leaks in case client code is written without consulting this documentation first (i.e.
always pushing new behaviors and never issuing an unbecome()
)
Get the child with the given name if it exists.
Get the child with the given name if it exists.
Returns all supervised children; this method returns a view (i.e.
Returns all supervised children; this method returns a view (i.e. a lazy
collection) onto the internal collection of children. Targeted lookups
should be using child
instead for performance reasons:
val badLookup = context.children find (_.path.name == "kid") // should better be expressed as: val goodLookup = context.child("kid")
Returns the dispatcher (MessageDispatcher) that is used for this Actor.
Returns the dispatcher (MessageDispatcher) that is used for this Actor. Importing this member will place an implicit ExecutionContext in scope.
Returns a reference to the named child or null if no child with that name exists.
Returns an unmodifiable Java Collection containing the linked actors, please note that the backing map is thread-safe but not immutable
Father of all children created by this interface.
Father of all children created by this interface.
INTERNAL API
INTERNAL API
INTERNAL API
Returns the supervising parent ActorRef.
Returns the supervising parent ActorRef.
Retrieve the Props which were used to create this actor.
Retrieve the Props which were used to create this actor.
INTERNAL API
INTERNAL API
Gets the current receive timeout.
Gets the current receive timeout. When specified, the receive method should be able to handle a akka.actor.ReceiveTimeout message.
Returns the sender 'ActorRef' of the current message.
Returns the sender 'ActorRef' of the current message.
Defines the inactivity timeout after which the sending of a akka.actor.ReceiveTimeout message is triggered.
Defines the inactivity timeout after which the sending of a akka.actor.ReceiveTimeout message is triggered. When specified, the receive function should be able to handle a akka.actor.ReceiveTimeout message. 1 millisecond is the minimum supported timeout.
Please note that the receive timeout might fire and enqueue the ReceiveTimeout
message right after
another message was enqueued; hence it is not guaranteed that upon reception of the receive
timeout there must have been an idle period beforehand as configured via this method.
Once set, the receive timeout stays in effect (i.e. continues firing repeatedly after inactivity
periods). Pass in Duration.Undefined
to switch off this feature.
Stop the actor pointed to by the given akka.actor.ActorRef; this is an asynchronous operation, i.e.
Stop the actor pointed to by the given akka.actor.ActorRef; this is
an asynchronous operation, i.e. involves a message send.
If this method is applied to the self
reference from inside an Actor
then that Actor is guaranteed to not process any further messages after
this call; please note that the processing of the current message will
continue, this method does not immediately terminate this actor.
The system that the actor belongs to.
The system that the actor belongs to. Importing this member will place an implicit ActorSystem in scope.
INTERNAL API
INTERNAL API
Reverts the Actor behavior to the previous one on the behavior stack.
Reverts the Actor behavior to the previous one on the behavior stack.
Unregisters this actor as Monitor for the provided ActorRef.
Unregisters this actor as Monitor for the provided ActorRef.
the provided ActorRef
Registers this actor as a Monitor for the provided ActorRef.
Registers this actor as a Monitor for the provided ActorRef. This actor will receive a Terminated(subject) message when watched actor is terminated.
the provided ActorRef
Construct an akka.actor.ActorSelection from the given path, which is parsed for wildcards (these are replaced by regular expressions internally).
Construct an akka.actor.ActorSelection from the given path, which is parsed for wildcards (these are replaced by regular expressions internally). No attempt is made to verify the existence of any part of the supplied path, it is recommended to send a message and gather the replies in order to resolve the matching set of actors.
Construct an akka.actor.ActorSelection from the given path, which is parsed for wildcards (these are replaced by regular expressions internally).
Construct an akka.actor.ActorSelection from the given path, which is parsed for wildcards (these are replaced by regular expressions internally). No attempt is made to verify the existence of any part of the supplied path, it is recommended to send a message and gather the replies in order to resolve the matching set of actors.
Changes the Actor's behavior to become the new 'Receive' (PartialFunction[Any, Unit]) handler.
Changes the Actor's behavior to become the new 'Receive' (PartialFunction[Any, Unit]) handler. Replaces the current behavior on the top of the behavior stack.
ActorContexts shouldn't be Serializable
ActorContexts shouldn't be Serializable
Java API: Look-up an actor by applying the given path elements, starting from the
current context, where ".."
signifies the parent of an actor.
Java API: Look-up an actor by applying the given path elements, starting from the
current context, where ".."
signifies the parent of an actor.
Example:
public class MyActor extends UntypedActor { public void onReceive(Object msg) throws Exception { ... final List<String> path = new ArrayList<String>(); path.add(".."); path.add("myBrother"); path.add("myNephew"); final ActorRef target = getContext().actorFor(path); ... } }
For maximum performance use a collection with efficient head & tail operations.
(Since version 2.2) use actorSelection instead of actorFor
Look-up an actor by applying the given path elements, starting from the
current context, where ".."
signifies the parent of an actor.
Look-up an actor by applying the given path elements, starting from the
current context, where ".."
signifies the parent of an actor.
Example:
class MyActor extends Actor { def receive = { case msg => ... val target = context.actorFor(Seq("..", "myBrother", "myNephew")) ... } }
For maximum performance use a collection with efficient head & tail operations.
(Since version 2.2) use actorSelection instead of actorFor
Look-up an actor by path represented as string.
Look-up an actor by path represented as string.
Absolute URIs like akka://appname/user/actorA
are looked up as described
for look-ups by actorOf(ActorPath)
.
Relative URIs like /service/actorA/childB
are looked up relative to the
root path of the akka.actor.ActorSystem containing this factory and as
described for look-ups by actorOf(Iterable[String])
.
Relative URIs like myChild/grandChild
or ../myBrother
are looked up
relative to the current context as described for look-ups by
actorOf(Iterable[String])
(Since version 2.2) use actorSelection instead of actorFor
Look-up an actor by path; if it does not exist, returns a reference to the dead-letter mailbox of the akka.actor.ActorSystem.
Look-up an actor by path; if it does not exist, returns a reference to
the dead-letter mailbox of the akka.actor.ActorSystem. If the path
point to an actor which is not local, no attempt is made during this
call to verify that the actor it represents does exist or is alive; use
watch(ref)
to be notified of the target’s termination, which is also
signaled if the queried path cannot be resolved.
(Since version 2.2) use actorSelection instead of actorFor
UntypedActorContext is the UntypedActor equivalent of ActorContext, containing the Java API