Eureka Service Discovery

Eureka is a RESTful service that is primarily used in the AWS cloud for the purpose of discovery, load balancing, and failover of middle-tier servers.

This page explains how Stork can use Eureka to handle the service discovery.

Dependency

First, you need to add the Stork Consul Service Discovery provider:

<dependency>
    <groupId>io.smallrye.stork</groupId>
    <artifactId>stork-service-discovery-eureka</artifactId>
    <version>1.0.0</version>
</dependency>
`````

## Configuration

For each application instance expected to be registered in Eureka, configure the lookup:

```properties
stork.my-service.service-discovery=eureka
stork.my-service.service-discovery.eureka-host=localhost
stork.my-service.service-discovery.eureka-port=8761

Stork looks for the service with the given name (my-service in the previous example).

Supported attributes are the following:

Attribute	Mandatory	Default Value	Description
eureka-host	Yes		The Eureka server host.
eureka-port	No	8761	The Eureka server port.
eureka-context-path	No	/	The Eureka server root context path.
application	No		The Eureka application Id; if not defined Stork service name will be used
eureka-trust-all	No	false	Enable/Disable the TLS certificate verification
eureka-tls	No	false	Use TLS to connect to the Eureka server
instance	No		The Eureka application instance Id
refresh-period	No	5M	Service discovery cache refresh period.
secure	No	false	Whether the communication should use a secure connection (e.g. HTTPS)

The application attribute is optional. It uses the Stork service name (my-service in the previous configuration) if not set.

The instance attribute allows selecting a specific instance. Using this attribute prevents load-balancing as you will always select a single instance.

The secure attribute indicates if you want the secure virtual address of the application instance. If set to true, unsecured instances are filtered out from the available instances.