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java.lang.Object akka.routing.ScatterGatherFirstCompletedRouter
public class ScatterGatherFirstCompletedRouter
Simple router that broadcasts the message to all routees, and replies with the first response.
You have to defin the 'within: Duration' parameter (f.e: within = 10 seconds).
Please note that providing both 'nrOfInstances' and 'routees' does not make logical sense as this means
that the router should both create new actors and use the 'routees' actor(s).
In this case the 'nrOfInstances' will be ignored and the 'routees' will be used.
The configuration parameter trumps the constructor arguments. This means that
if you provide either 'nrOfInstances' or 'routees' during instantiation they will
be ignored if the router is defined in the configuration file for the actor being used.
The router creates a “head” actor which supervises and/or monitors the routees. Instances are created as children of this actor, hence the children are not supervised by the parent of the router. Common choices are to always escalate (meaning that fault handling is always applied to all children simultaneously; this is the default) or use the parent’s strategy, which will result in routed children being treated individually, but it is possible as well to use Routers to give different supervisor strategies to different groups of children.
class MyActor extends Actor {
override val supervisorStrategy = ...
val poolAsAWhole = context.actorOf(Props[SomeActor].withRouter(ScatterGatherFirstCompletedRouter(5)))
val poolIndividuals = context.actorOf(Props[SomeActor].withRouter(
ScatterGatherFirstCompletedRouter(5, supervisorStrategy = this.supervisorStrategy)))
val specialChild = context.actorOf(Props[SomeActor].withRouter(
ScatterGatherFirstCompletedRouter(5, supervisorStrategy = OneForOneStrategy() {
...
})))
}
Constructor Summary | |
---|---|
ScatterGatherFirstCompletedRouter(int nr,
scala.concurrent.duration.FiniteDuration w)
Java API: Constructor that sets nrOfInstances to be created. |
|
ScatterGatherFirstCompletedRouter(int nrOfInstances,
scala.collection.Iterable<java.lang.String> routees,
scala.concurrent.duration.FiniteDuration within,
scala.Option<Resizer> resizer,
java.lang.String routerDispatcher,
SupervisorStrategy supervisorStrategy)
|
|
ScatterGatherFirstCompletedRouter(java.lang.Iterable<java.lang.String> routeePaths,
scala.concurrent.duration.FiniteDuration w)
Java API: Constructor that sets the routees to be used. |
|
ScatterGatherFirstCompletedRouter(Resizer resizer,
scala.concurrent.duration.FiniteDuration w)
Java API: Constructor that sets the resizer to be used. |
Method Summary | |
---|---|
static ScatterGatherFirstCompletedRouter |
apply(scala.collection.Iterable<ActorRef> routees,
scala.concurrent.duration.FiniteDuration within)
Creates a new ScatterGatherFirstCompletedRouter, routing to the specified routees, timing out after the specified Duration |
static ScatterGatherFirstCompletedRouter |
create(java.lang.Iterable<ActorRef> routees,
scala.concurrent.duration.FiniteDuration within)
|
int |
nrOfInstances()
|
scala.Option<Resizer> |
resizer()
Routers with dynamically resizable number of routees return the Resizer
to use. |
scala.collection.Iterable<java.lang.String> |
routees()
|
java.lang.String |
routerDispatcher()
Dispatcher ID to use for running the “head” actor, i.e. the Router . |
SupervisorStrategy |
supervisorStrategy()
SupervisorStrategy for the created Router actor. |
ScatterGatherFirstCompletedRouter |
withDispatcher(java.lang.String dispatcherId)
Java API for setting routerDispatcher |
RouterConfig |
withFallback(RouterConfig other)
Uses the resizer of the given Routerconfig if this RouterConfig doesn't have one, i.e. the resizer defined in code is used if resizer was not defined in config. |
scala.concurrent.duration.FiniteDuration |
within()
|
ScatterGatherFirstCompletedRouter |
withSupervisorStrategy(SupervisorStrategy strategy)
Java API for setting the supervisor strategy to be used for the “head” Router actor. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface akka.routing.RouterConfig |
---|
createActor, createRoute, createRouteeProvider, toAll, verifyConfig |
Methods inherited from interface akka.routing.ScatterGatherFirstCompletedLike |
---|
createRoute |
Methods inherited from interface scala.Product |
---|
productArity, productElement, productIterator, productPrefix |
Methods inherited from interface scala.Equals |
---|
canEqual, equals |
Constructor Detail |
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public ScatterGatherFirstCompletedRouter(int nrOfInstances, scala.collection.Iterable<java.lang.String> routees, scala.concurrent.duration.FiniteDuration within, scala.Option<Resizer> resizer, java.lang.String routerDispatcher, SupervisorStrategy supervisorStrategy)
public ScatterGatherFirstCompletedRouter(int nr, scala.concurrent.duration.FiniteDuration w)
public ScatterGatherFirstCompletedRouter(java.lang.Iterable<java.lang.String> routeePaths, scala.concurrent.duration.FiniteDuration w)
routeePaths
- string representation of the actor paths of the routees that will be looked up
using actorFor
in ActorRefProvider
public ScatterGatherFirstCompletedRouter(Resizer resizer, scala.concurrent.duration.FiniteDuration w)
Method Detail |
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public static ScatterGatherFirstCompletedRouter apply(scala.collection.Iterable<ActorRef> routees, scala.concurrent.duration.FiniteDuration within)
public static ScatterGatherFirstCompletedRouter create(java.lang.Iterable<ActorRef> routees, scala.concurrent.duration.FiniteDuration within)
public int nrOfInstances()
nrOfInstances
in interface ScatterGatherFirstCompletedLike
public scala.collection.Iterable<java.lang.String> routees()
routees
in interface ScatterGatherFirstCompletedLike
public scala.concurrent.duration.FiniteDuration within()
within
in interface ScatterGatherFirstCompletedLike
public scala.Option<Resizer> resizer()
RouterConfig
Resizer
to use.
resizer
in interface RouterConfig
public java.lang.String routerDispatcher()
RouterConfig
Router
.
routerDispatcher
in interface RouterConfig
public SupervisorStrategy supervisorStrategy()
RouterConfig
supervisorStrategy
in interface RouterConfig
public ScatterGatherFirstCompletedRouter withDispatcher(java.lang.String dispatcherId)
public ScatterGatherFirstCompletedRouter withSupervisorStrategy(SupervisorStrategy strategy)
public RouterConfig withFallback(RouterConfig other)
withFallback
in interface RouterConfig
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