Composite Service Discovery

Some organizations use hybrid infrastructure. In such an infrastructure, different service instances may be discoverable via different service discovery providers. E.g. when serviceA is being migrated from a VM to Kubernetes, its older versions can be discovered via Consul and newer via Kubernetes.

composite service discovery addresses this problem by letting you define a service that consists of multiple services.

Dependency

To use the composite service discovery, first add the appropriate Service Discovery provider dependency to your project:

<dependency>
    <groupId>io.smallrye.stork</groupId>
    <artifactId>stork-service-discovery-composite</artifactId>
    <version>1.1.1</version>
</dependency>

Configuration

For each service that should consist of multiple services, configure the service discovery type, and set the services property to a comma separated list of services:

stork standalonestork in quarkus

stork.my-service.service-discovery.type=composite
stork.my-service.service-discovery.services=serviceA,serviceB

stork.serviceA.service-discovery.type=...
stork.serviceB.service-discovery.type=...

quarkus.stork.my-service.service-discovery.type=composite
quarkus.stork.my-service.service-discovery.services=serviceA,serviceB

quarkus.stork.serviceA.service-discovery.type=...
quarkus.stork.serviceB.service-discovery.type=...

Remember to define the services that make up your composite service.

These are all the parameters of the composite service discovery:

Attribute	Mandatory	Default Value	Description
services	Yes		A comma-separated list of services that this services consists of.