Package io.micronaut.http.client

Interface LoadBalancer

All Known Implementing Classes:

AbstractRoundRobinLoadBalancer, DiscoveryClientRoundRobinLoadBalancer, FixedLoadBalancer, ServiceInstanceListRoundRobinLoadBalancer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface LoadBalancer

Interface to abstract server selection. Allows plugging in load balancing strategies.

Since:

1.0

Author:

Graeme Rocher

Method Summary

Modifier and Type	Method	Description
static LoadBalancer	empty()
static LoadBalancer	fixed(URI uri)	A LoadBalancer that does no load balancing and always hits the given URI.
static LoadBalancer	fixed(URL url)	Deprecated. Use fixed(URI) instead
default Optional<String>	getContextPath()
default Publisher<ServiceInstance>	select()
Publisher<ServiceInstance>	select(@Nullable Object discriminator)

Method Details

select

Publisher<ServiceInstance> select(@Nullable
 @Nullable Object discriminator)

Parameters:

discriminator - An object used to discriminate the server to select. Usually the service ID

Returns:

The selected ServiceInstance

getContextPath

default Optional<String> getContextPath()

Returns:

The context path to use for requests.

select

default Publisher<ServiceInstance> select()

Returns:

The selected ServiceInstance

fixed

@Deprecated
static LoadBalancer fixed(URL url)

Deprecated.

Use fixed(URI) instead

A LoadBalancer that does no load balancing and always hits the given URL.

Parameters:

url - The URL

Returns:

The LoadBalancer

fixed

static LoadBalancer fixed(URI uri)

A LoadBalancer that does no load balancing and always hits the given URI.

Parameters:

uri - The URI

Returns:

The LoadBalancer

empty

static LoadBalancer empty()

Returns:

An error because there are no load balancer