Package org.springframework.cloud.client.discovery.composite

Class CompositeDiscoveryClient

java.lang.Object

org.springframework.cloud.client.discovery.composite.CompositeDiscoveryClient

All Implemented Interfaces:

DiscoveryClient, org.springframework.core.Ordered

public class CompositeDiscoveryClient
extends Object
implements DiscoveryClient

A DiscoveryClient that is composed of other discovery clients and delegates calls to each of them in order.

Author:

Biju Kunjummen, Olga Maciaszek-Sharma, Sean Ruffatti

Field Summary

Fields inherited from interface org.springframework.cloud.client.discovery.DiscoveryClient

DEFAULT_ORDER

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor	Description
CompositeDiscoveryClient(List<DiscoveryClient> discoveryClients)

Method Summary

Modifier and Type	Method	Description
String	description()	A human-readable description of the implementation, used in HealthIndicator.
List<DiscoveryClient>	getDiscoveryClients()
List<ServiceInstance>	getInstances(String serviceId)	Gets all ServiceInstances associated with a particular serviceId.
List<String>	getServices()
void	probe()	Can be used to verify the client is valid and able to make calls.

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.client.discovery.DiscoveryClient

getOrder

Constructor Details

CompositeDiscoveryClient

public CompositeDiscoveryClient(List<DiscoveryClient> discoveryClients)

Method Details

description

public String description()

Description copied from interface: DiscoveryClient

A human-readable description of the implementation, used in HealthIndicator.

Specified by:

description in interface DiscoveryClient

Returns:

The description.

getInstances

public List<ServiceInstance> getInstances(String serviceId)

Description copied from interface: DiscoveryClient

Gets all ServiceInstances associated with a particular serviceId.

Specified by:

getInstances in interface DiscoveryClient

Parameters:

serviceId - The serviceId to query.

Returns:

A List of ServiceInstance.

getServices

public List<String> getServices()

Specified by:

getServices in interface DiscoveryClient

Returns:

All known service IDs.

probe

public void probe()

Description copied from interface: DiscoveryClient

Can be used to verify the client is valid and able to make calls.

A successful invocation with no exception thrown implies the client is able to make calls.

The default implementation simply calls DiscoveryClient.getServices() - client implementations can override with a lighter weight operation if they choose to.

Specified by:

probe in interface DiscoveryClient

getDiscoveryClients

public List<DiscoveryClient> getDiscoveryClients()