org.springframework.cloud.netflix.turbine

Class EurekaInstanceDiscovery

java.lang.Object

org.springframework.cloud.netflix.turbine.CommonsInstanceDiscovery

org.springframework.cloud.netflix.turbine.EurekaInstanceDiscovery

All Implemented Interfaces:

com.netflix.turbine.discovery.InstanceDiscovery

public class EurekaInstanceDiscovery
extends CommonsInstanceDiscovery

Class that encapsulates an InstanceDiscovery implementation that uses Eureka (see https://github.com/Netflix/eureka) The plugin requires a list of applications configured. It then queries the set of instances for each application. Instance information retrieved from Eureka must be translated to something that Turbine can understand i.e the Instance class.

All the logic to perform this translation can be overriden here, so that you can provide your own implementation if needed.

Author:

Spencer Gibb

Field Summary

Fields inherited from class org.springframework.cloud.netflix.turbine.CommonsInstanceDiscovery

FUSED_HOST_PORT_KEY, PORT_KEY, SECURE_PORT_KEY

Fields inherited from interface com.netflix.turbine.discovery.InstanceDiscovery

TURBINE_AGGREGATOR_CLUSTER_CONFIG

Constructor Summary

Constructors

Constructor and Description
EurekaInstanceDiscovery(TurbineProperties turbineProperties, com.netflix.discovery.EurekaClient eurekaClient)

Method Summary

Modifier and Type	Method and Description
protected List<com.netflix.turbine.discovery.Instance>	getInstancesForApp(String serviceId) Private helper that fetches the Instances for each application.
protected Boolean	parseInstanceStatus(com.netflix.appinfo.InstanceInfo.InstanceStatus status) Helper that returns whether the instance is Up of Down.

Methods inherited from class org.springframework.cloud.netflix.turbine.CommonsInstanceDiscovery

addMetadata, getApplications, getClusterName, getClusterNameExpression, getInstance, getInstanceList, getTurbineProperties, isCombineHostPort

Methods inherited from class java.lang.Object

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

Constructor Detail

EurekaInstanceDiscovery

public EurekaInstanceDiscovery(TurbineProperties turbineProperties,
                               com.netflix.discovery.EurekaClient eurekaClient)

Method Detail

getInstancesForApp

protected List<com.netflix.turbine.discovery.Instance> getInstancesForApp(String serviceId)
                                                                   throws Exception

Private helper that fetches the Instances for each application.

Overrides:

getInstancesForApp in class CommonsInstanceDiscovery

Parameters:

serviceId - of the service that the instance list should be returned for

Returns:

List of instances for a given service id

Throws:

Exception - - retrieving and marshalling service instances may result in an Exception

parseInstanceStatus

protected Boolean parseInstanceStatus(com.netflix.appinfo.InstanceInfo.InstanceStatus status)

Helper that returns whether the instance is Up of Down.

Parameters:

status - InstanceInfo.InstanceStatus instance to evaluate the status from

Returns:

true if InstanceInfo.InstanceStatus is UP