akka.routing

Class ConsistentHashingRouter

java.lang.Object

akka.routing.ConsistentHashingRouter

All Implemented Interfaces:

DeprecatedRouterConfig, Group, Pool, PoolOverrideUnsetConfig<ConsistentHashingRouter>, RouterConfig, java.io.Serializable, scala.Equals, scala.Product

public class ConsistentHashingRouter
extends java.lang.Object
implements DeprecatedRouterConfig, PoolOverrideUnsetConfig<ConsistentHashingRouter>, scala.Product, scala.Serializable

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ConsistentHashingRouter.ConsistentHashable If you don't define the hashMapping when constructing the ConsistentHashingRouter the messages need to implement this interface to define what data to use for the consistent hash key.
static class	ConsistentHashingRouter.ConsistentHashableEnvelope If you don't define the hashMapping when constructing the ConsistentHashingRouter and messages can't implement ConsistentHashingRouter.ConsistentHashable themselves they can we wrapped by this envelope instead.
static class	ConsistentHashingRouter.ConsistentHashableEnvelope$
static interface	ConsistentHashingRouter.ConsistentHashMapper JAVA API Mapping from message to the data to use for the consistent hash key.
static class	ConsistentHashingRouter.emptyConsistentHashMapping$

Constructor Summary

Constructors

Constructor and Description
ConsistentHashingRouter(int nr) Java API: Constructor that sets nrOfInstances to be created.
ConsistentHashingRouter(int nrOfInstances, scala.collection.immutable.Iterable<java.lang.String> routees, scala.Option<Resizer> resizer, java.lang.String routerDispatcher, SupervisorStrategy supervisorStrategy, int virtualNodesFactor, scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)
ConsistentHashingRouter(java.lang.Iterable<java.lang.String> routeePaths) Java API: Constructor that sets the routees to be used.
ConsistentHashingRouter(Resizer resizer) Java API: Constructor that sets the resizer to be used.

Method Summary

Modifier and Type	Method and Description
static ConsistentHashingRouter	apply(scala.collection.immutable.Iterable<ActorRef> routees) Creates a new ConsistentHashingRouter, routing to the specified routees
static ConsistentHashingRouter	create(java.lang.Iterable<ActorRef> routees)
Router	createRouter(ActorSystem system) Create the actual router, responsible for routing messages to routees.
scala.PartialFunction<java.lang.Object,java.lang.Object>	hashMapping()
static scala.PartialFunction<java.lang.Object,java.lang.Object>	hashMappingAdapter(ConsistentHashingRouter.ConsistentHashMapper mapper) INTERNAL API
int	nrOfInstances() Initial number of routee instances
scala.collection.immutable.Iterable<java.lang.String>	paths()
scala.Option<Resizer>	resizer() Pool with dynamically resizable number of routees return the Resizer to use.
scala.collection.immutable.Iterable<java.lang.String>	routees()
java.lang.String	routerDispatcher() Dispatcher ID to use for running the &ldquo;head&rdquo; actor, which handles supervision, death watch and router management messages
SupervisorStrategy	supervisorStrategy() SupervisorStrategy for the head actor, i.e.
int	virtualNodesFactor()
ConsistentHashingRouter	withDispatcher(java.lang.String dispatcherId) Java API for setting routerDispatcher
RouterConfig	withFallback(RouterConfig other) Uses the resizer and/or the supervisor strategy of the given Routerconfig if this RouterConfig doesn't have one, i.e.
ConsistentHashingRouter	withHashMapper(ConsistentHashingRouter.ConsistentHashMapper mapping) Java API for setting the mapping from message to the data to use for the consistent hash key.
ConsistentHashingRouter	withResizer(Resizer resizer) Java API for setting the resizer to be used.
ConsistentHashingRouter	withSupervisorStrategy(SupervisorStrategy strategy) Java API for setting the supervisor strategy to be used for the &ldquo;head&rdquo; Router actor.
ConsistentHashingRouter	withVirtualNodesFactor(int vnodes) Java API for setting the number of virtual nodes per node, used in ConsistentHash

Methods inherited from class java.lang.Object

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

Methods inherited from interface akka.routing.Group

createRouterActor, props, routeeFor

Methods inherited from interface akka.routing.PoolOverrideUnsetConfig

overrideUnsetConfig

Methods inherited from interface akka.routing.Pool

createRouterActor, enrichWithPoolDispatcher, newRoutee, props, stopRouterWhenAllRouteesRemoved, usePoolDispatcher

Methods inherited from interface akka.routing.RouterConfig

isManagementMessage, routingLogicController, verifyConfig

Methods inherited from interface scala.Product

productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual, equals

Constructor Detail

ConsistentHashingRouter

public ConsistentHashingRouter(int nrOfInstances,
                               scala.collection.immutable.Iterable<java.lang.String> routees,
                               scala.Option<Resizer> resizer,
                               java.lang.String routerDispatcher,
                               SupervisorStrategy supervisorStrategy,
                               int virtualNodesFactor,
                               scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)

ConsistentHashingRouter

public ConsistentHashingRouter(int nr)

Java API: Constructor that sets nrOfInstances to be created.

Parameters:

nr - (undocumented)

ConsistentHashingRouter

public ConsistentHashingRouter(java.lang.Iterable<java.lang.String> routeePaths)

Java API: Constructor that sets the routees to be used.

Parameters:

routeePaths - string representation of the actor paths of the routees that will be looked up using actorFor in ActorRefProvider

ConsistentHashingRouter

public ConsistentHashingRouter(Resizer resizer)

Java API: Constructor that sets the resizer to be used.

Parameters:

resizer - (undocumented)

Method Detail

hashMappingAdapter

public static scala.PartialFunction<java.lang.Object,java.lang.Object> hashMappingAdapter(ConsistentHashingRouter.ConsistentHashMapper mapper)

INTERNAL API

Parameters:

mapper - (undocumented)

Returns:

(undocumented)

apply

public static ConsistentHashingRouter apply(scala.collection.immutable.Iterable<ActorRef> routees)

Creates a new ConsistentHashingRouter, routing to the specified routees

Parameters:

routees - (undocumented)

Returns:

(undocumented)

create

public static ConsistentHashingRouter create(java.lang.Iterable<ActorRef> routees)

nrOfInstances

public int nrOfInstances()

Description copied from interface: Pool

Initial number of routee instances

Specified by:

nrOfInstances in interface Pool

Returns:

(undocumented)

routees

public scala.collection.immutable.Iterable<java.lang.String> routees()

resizer

public scala.Option<Resizer> resizer()

Description copied from interface: Pool

Pool with dynamically resizable number of routees return the Resizer to use. The resizer is invoked once when the router is created, before any messages can be sent to it. Resize is also triggered when messages are sent to the routees, and the resizer is invoked asynchronously, i.e. not necessarily before the message has been sent.

Specified by:

resizer in interface Pool

Returns:

(undocumented)

routerDispatcher

public java.lang.String routerDispatcher()

Description copied from interface: RouterConfig

Dispatcher ID to use for running the &ldquo;head&rdquo; actor, which handles supervision, death watch and router management messages

Specified by:

routerDispatcher in interface RouterConfig

Returns:

(undocumented)

supervisorStrategy

public SupervisorStrategy supervisorStrategy()

Description copied from interface: Pool

SupervisorStrategy for the head actor, i.e. for supervising the routees of the pool.

Specified by:

supervisorStrategy in interface Pool

Returns:

(undocumented)

virtualNodesFactor

public int virtualNodesFactor()

hashMapping

public scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping()

paths

public scala.collection.immutable.Iterable<java.lang.String> paths()

Specified by:

paths in interface Group

withDispatcher

public ConsistentHashingRouter withDispatcher(java.lang.String dispatcherId)

Java API for setting routerDispatcher

Parameters:

dispatcherId - (undocumented)

Returns:

(undocumented)

withSupervisorStrategy

public ConsistentHashingRouter withSupervisorStrategy(SupervisorStrategy strategy)

Java API for setting the supervisor strategy to be used for the &ldquo;head&rdquo; Router actor.

Specified by:

withSupervisorStrategy in interface PoolOverrideUnsetConfig<ConsistentHashingRouter>

Parameters:

strategy - (undocumented)

Returns:

(undocumented)

withResizer

public ConsistentHashingRouter withResizer(Resizer resizer)

Java API for setting the resizer to be used.

Specified by:

withResizer in interface PoolOverrideUnsetConfig<ConsistentHashingRouter>

Parameters:

resizer - (undocumented)

Returns:

(undocumented)

withVirtualNodesFactor

public ConsistentHashingRouter withVirtualNodesFactor(int vnodes)

Java API for setting the number of virtual nodes per node, used in ConsistentHash

Parameters:

vnodes - (undocumented)

Returns:

(undocumented)

withHashMapper

public ConsistentHashingRouter withHashMapper(ConsistentHashingRouter.ConsistentHashMapper mapping)

Java API for setting the mapping from message to the data to use for the consistent hash key.

Parameters:

mapping - (undocumented)

Returns:

(undocumented)

withFallback

public RouterConfig withFallback(RouterConfig other)

Uses the resizer and/or the supervisor strategy 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. Uses the the hashMapping defined in code, since that can't be defined in configuration.

Specified by:

withFallback in interface RouterConfig

Parameters:

other - (undocumented)

Returns:

(undocumented)

createRouter

public Router createRouter(ActorSystem system)

Description copied from interface: RouterConfig

Create the actual router, responsible for routing messages to routees.

Specified by:

createRouter in interface RouterConfig

Parameters:

system - the ActorSystem this router belongs to

Returns:

(undocumented)