eldermoraes

@Path("/mymetrics")
public class MetricsResource {
    
    @GET
    @Path("counted")
    @Counted
    public String getCounted(){
        return "Counted";
    }

eldermoraes

@Path("/trace")
public class TraceResource {
    
    @GET
    @Traced
    public String getTrace(){
        return "Trace";
    }
}

eldermoraes

@Readiness
public class ReadinessCheck implements HealthCheck {

    @Override
    public HealthCheckResponse call() {
        Client client = ClientBuilder.newClient();
        Response response = client.target("https://eldermoraes.com").request().get();

        if (response.getStatusInfo().getFamily().equals(Response.Status.Family.SUCCESSFUL)){
            return HealthCheckResponse.up("I'm ready!");

eldermoraes

@Liveness
public class LivenessCheck implements HealthCheck {

    @Override
    public HealthCheckResponse call() {
        return HealthCheckResponse.up("I'm alive!");
    }

}

eldermoraes

@Path("/circuit")
public class CircuitResource {
    
    @Timeout(unit = ChronoUnit.MILLIS, value = 500)
    @Fallback(fallbackMethod = "fallback")
    @CircuitBreaker(requestVolumeThreshold = 4, failureRatio = 0.5, delay = 2000, delayUnit = ChronoUnit.MILLIS, successThreshold = 2)
    @GET
    public String getCircuit() throws InterruptedException {
        Thread.sleep(600);
        return "Circuit \n";

eldermoraes

config=Config

eldermoraes

@Path("/config")
public class ConfigResource {
    
    @ConfigProperty(name = "config")
    private Optional<String> config;

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getConfig(){
        return Response.ok("Hello, " + config.orElse("Optional")).build() ;

eldermoraes

module coffee.shop { 
    requires coffee.module;
}

eldermoraes

package coffee.shop;
    
import coffee.module.Coffee;

public class CoffeeShop {
    public static void main(String[] args) {
        System.out.println("Enjoy your " + Coffee.name());
    }
}

eldermoraes

module coffee.module {
    exports coffee.module;
}