io.scalecube.examples.helloworld.Example1 Maven / Gradle / Ivy
package io.scalecube.examples.helloworld;
import io.scalecube.examples.helloworld.service.GreetingServiceImpl;
import io.scalecube.examples.helloworld.service.api.GreetingsService;
import io.scalecube.services.Microservices;
/**
* The Hello World project is a time-honored tradition in computer programming. It is a simple exercise that gets you
* started when learning something new. Let’s get started with ScaleCube!
*
* the example starts 2 cluster member nodes. 1. seed is a member node and holds no services of its own. 2. The
* microservices variable is a member that joins seed member and provision GreetingService
* instance.
*/
public class Example1 {
public static void main(String[] args) {
// ScaleCube Node node with no members
Microservices seed = Microservices.builder().startAwait();
// Construct a ScaleCube node which joins the cluster hosting the Greeting Service
Microservices microservices = Microservices.builder()
.seeds(seed.cluster().address())
.services(new GreetingServiceImpl())
.startAwait();
// Create service proxy
GreetingsService service = seed.call().create().api(GreetingsService.class);
// Execute the services and subscribe to service events
service.sayHello("joe").subscribe(consumer -> {
System.out.println(consumer.message());
});
// shut down the nodes
seed.shutdown().block();
microservices.shutdown().block();
}
}