org.springframework.cloud.loadbalancer.core

Class RoundRobinLoadBalancer

java.lang.Object

org.springframework.cloud.loadbalancer.core.RoundRobinLoadBalancer

All Implemented Interfaces:

ReactiveLoadBalancer<ServiceInstance>, ReactorLoadBalancer<ServiceInstance>, ReactorServiceInstanceLoadBalancer

public class RoundRobinLoadBalancer
extends Object
implements ReactorServiceInstanceLoadBalancer

A Round-Robin-based implementation of ReactorServiceInstanceLoadBalancer.

Author:

Spencer Gibb, Olga Maciaszek-Sharma

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.cloud.client.loadbalancer.reactive.ReactiveLoadBalancer

ReactiveLoadBalancer.Factory<T>

Field Summary

Fields inherited from interface org.springframework.cloud.client.loadbalancer.reactive.ReactiveLoadBalancer

REQUEST

Constructor Summary

Constructors

Constructor and Description
RoundRobinLoadBalancer(org.springframework.beans.factory.ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider, String serviceId)
RoundRobinLoadBalancer(org.springframework.beans.factory.ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider, String serviceId, int seedPosition)
RoundRobinLoadBalancer(String serviceId, org.springframework.beans.factory.ObjectProvider<ServiceInstanceSupplier> serviceInstanceSupplier) Deprecated. Use RoundRobinLoadBalancer(ObjectProvider, String)} instead.
RoundRobinLoadBalancer(String serviceId, org.springframework.beans.factory.ObjectProvider<ServiceInstanceSupplier> serviceInstanceSupplier, int seedPosition) Deprecated. Use RoundRobinLoadBalancer(ObjectProvider, String, int)} instead.

Method Summary

Modifier and Type	Method and Description
reactor.core.publisher.Mono<Response<ServiceInstance>>	choose(Request request) Choose the next server based on the load balancing algorithm.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer

choose

Constructor Detail

RoundRobinLoadBalancer

@Deprecated
public RoundRobinLoadBalancer(String serviceId,
                                          org.springframework.beans.factory.ObjectProvider<ServiceInstanceSupplier> serviceInstanceSupplier)

Deprecated. Use RoundRobinLoadBalancer(ObjectProvider, String)} instead.

Parameters:

serviceId - id of the service for which to choose an instance

serviceInstanceSupplier - a provider of ServiceInstanceSupplier that will be used to get available instances

RoundRobinLoadBalancer

public RoundRobinLoadBalancer(org.springframework.beans.factory.ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider,
                              String serviceId)

Parameters:

serviceInstanceListSupplierProvider - a provider of ServiceInstanceListSupplier that will be used to get available instances

serviceId - id of the service for which to choose an instance

RoundRobinLoadBalancer

public RoundRobinLoadBalancer(org.springframework.beans.factory.ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider,
                              String serviceId,
                              int seedPosition)

Parameters:

serviceInstanceListSupplierProvider - a provider of ServiceInstanceListSupplier that will be used to get available instances

serviceId - id of the service for which to choose an instance

seedPosition - Round Robin element position marker

RoundRobinLoadBalancer

@Deprecated
public RoundRobinLoadBalancer(String serviceId,
                                          org.springframework.beans.factory.ObjectProvider<ServiceInstanceSupplier> serviceInstanceSupplier,
                                          int seedPosition)

Deprecated. Use RoundRobinLoadBalancer(ObjectProvider, String, int)} instead.

Parameters:

serviceId - id of the service for which to choose an instance

serviceInstanceSupplier - a provider of ServiceInstanceSupplier that will be used to get available instances

seedPosition - Round Robin element position marker

Method Detail

choose

public reactor.core.publisher.Mono<Response<ServiceInstance>> choose(Request request)

Description copied from interface: ReactorLoadBalancer

Choose the next server based on the load balancing algorithm.

Specified by:

choose in interface ReactiveLoadBalancer<ServiceInstance>

Specified by:

choose in interface ReactorLoadBalancer<ServiceInstance>

Parameters:

request - - an input request

Returns:

- mono of response