io.servicetalk.http.utils

Class CacheConnectionHttpLoadBalanceFactory<ResolvedAddress>

Object

CacheConnectionHttpLoadBalanceFactory<ResolvedAddress>

Type Parameters:

ResolvedAddress - The resolved address type.

All Implemented Interfaces:

LoadBalancerFactory<ResolvedAddress,FilterableStreamingHttpLoadBalancedConnection>, HttpLoadBalancerFactory<ResolvedAddress>, ExecutionStrategyInfluencer<ExecutionStrategy>

public final class CacheConnectionHttpLoadBalanceFactory<ResolvedAddress>
extends Object
implements HttpLoadBalancerFactory<ResolvedAddress>

A HttpLoadBalancerFactory that will cache successive connection creation attempts and return the same Single instead of creating a new connection each time. This is useful when a spike of connections occurs instead of creating a new connection for each request, if the underlying protocol version supports concurrency (pipelining, multiplexing) a single connection creation attempt can be used before the connection is actually established, which will reduce the overall number of connectiosn required.

Nested Class Summary

Nested classes/interfaces inherited from interface HttpLoadBalancerFactory

HttpLoadBalancerFactory.DefaultFilterableStreamingHttpLoadBalancedConnection

Constructor Summary

Constructors

Constructor and Description
CacheConnectionHttpLoadBalanceFactory(HttpLoadBalancerFactory<ResolvedAddress> delegate, ToIntFunction<ResolvedAddress> maxConcurrencyFunc) Create a new instance.

Method Summary

Modifier and Type	Method and Description
LoadBalancer<FilterableStreamingHttpLoadBalancedConnection>	newLoadBalancer(Publisher<? extends Collection<? extends ServiceDiscovererEvent<ResolvedAddress>>> eventPublisher, ConnectionFactory<ResolvedAddress,FilterableStreamingHttpLoadBalancedConnection> connectionFactory, String targetResource)
<T extends FilterableStreamingHttpLoadBalancedConnection> LoadBalancer<T>	newLoadBalancer(String targetResource, Publisher<? extends Collection<? extends ServiceDiscovererEvent<ResolvedAddress>>> eventPublisher, ConnectionFactory<ResolvedAddress,T> connectionFactory)
HttpExecutionStrategy	requiredOffloads()

Methods inherited from class Object

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

Methods inherited from interface HttpLoadBalancerFactory

toLoadBalancedConnection, toLoadBalancedConnection

Methods inherited from interface LoadBalancerFactory

newLoadBalancer

Constructor Detail

CacheConnectionHttpLoadBalanceFactory

public CacheConnectionHttpLoadBalanceFactory(HttpLoadBalancerFactory<ResolvedAddress> delegate,
                                             ToIntFunction<ResolvedAddress> maxConcurrencyFunc)

Create a new instance.

Parameters:

delegate - The LoadBalancerFactory to delegate to.

maxConcurrencyFunc - The default number of maximum concurrency requests per each address.

Method Detail

newLoadBalancer

public <T extends FilterableStreamingHttpLoadBalancedConnection> LoadBalancer<T> newLoadBalancer(String targetResource,
                                                                                                 Publisher<? extends Collection<? extends ServiceDiscovererEvent<ResolvedAddress>>> eventPublisher,
                                                                                                 ConnectionFactory<ResolvedAddress,T> connectionFactory)

Specified by:

newLoadBalancer in interface LoadBalancerFactory<ResolvedAddress,FilterableStreamingHttpLoadBalancedConnection>

newLoadBalancer

public LoadBalancer<FilterableStreamingHttpLoadBalancedConnection> newLoadBalancer(Publisher<? extends Collection<? extends ServiceDiscovererEvent<ResolvedAddress>>> eventPublisher,
                                                                                   ConnectionFactory<ResolvedAddress,FilterableStreamingHttpLoadBalancedConnection> connectionFactory,
                                                                                   String targetResource)

Specified by:

newLoadBalancer in interface LoadBalancerFactory<ResolvedAddress,FilterableStreamingHttpLoadBalancedConnection>

requiredOffloads

public HttpExecutionStrategy requiredOffloads()

Specified by:

requiredOffloads in interface LoadBalancerFactory<ResolvedAddress,FilterableStreamingHttpLoadBalancedConnection>

Specified by:

requiredOffloads in interface HttpLoadBalancerFactory<ResolvedAddress>

Specified by:

requiredOffloads in interface ExecutionStrategyInfluencer<ExecutionStrategy>