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,
and InvalidActorNameException
is thrown.
See akka.actor.Props for details on how to obtain a Props
object.
When invoked on ActorSystem, this method sends a message to the guardian
actor and blocks waiting for a reply, see akka.actor.creation-timeout
in
the reference.conf
.
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.
When invoked on ActorSystem, this method sends a message to the guardian
actor and blocks waiting for a reply, see akka.actor.creation-timeout
in
the reference.conf
.
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 has been chosen to avoid memory leaks in
case client code is written without consulting this documentation first (i.e. always pushing
new closures 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 at the top of the hotswap 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 has been chosen to avoid memory leaks in
case client code is written without consulting this documentation first (i.e. always pushing
new closures 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.
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 actorFor
instead for performance reasons:
val badLookup = context.children find (_.path.name == "kid") // should better be expressed as: val goodLookup = context.actorFor("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 a implicit MessageDispatcher 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 USE ONLY
INTERNAL USE ONLY
INTERNAL USE ONLY
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 USE ONLY
INTERNAL USE ONLY
Gets the current receive timeout.
Gets the current receive timeout. When specified, the receive method should be able to handle a '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 ReceiveTimeout
message is triggered.
Defines the inactivity timeout after which the sending of a ReceiveTimeout
message is triggered.
When specified, the receive function should be able to handle a '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.
Stop the actor pointed to by the given akka.actor.ActorRef; this is
an asynchronous operation, i.e. involves a message send.
When invoked on akka.actor.ActorSystem for a top-level actor, this
method sends a message to the guardian actor and blocks waiting for a reply,
see akka.actor.creation-timeout
in the reference.conf
.
The system that the actor belongs to.
The system that the actor belongs to. Importing this member will place a implicit MessageDispatcher in scope.
INTERNAL USE ONLY
INTERNAL USE ONLY
Reverts the Actor behavior to the previous one in the hotswap stack.
Reverts the Actor behavior to the previous one in the hotswap 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(watched) message when watched is terminated.
the provided ActorRef
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 = context().actorFor(path); ... } }
For maximum performance use a collection with efficient head & tail operations.
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.
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])
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.
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.
ActorContexts shouldn't be Serializable
ActorContexts shouldn't be Serializable
UntypedActorContext is the UntypedActor equivalent of ActorContext, containing the Java API