I wrote a blog post to accompany this talk at Red Hat Summit 2019. https://developers.redhat.com/blog/2019/05/13/building-and-understanding-reactive-microservices-using-eclipse-vert-x-and-distributed-tracing/

1. Vert.x Application Development with
Jaeger Distributed Tracing
Tiffany Jachja
Consultant
May 7, 2019

2. IN THIS TALK
Vert.x Toolkit for Reactive Microservices
Why should we care about tracing
CNCF Jaeger Architecture

3. ABOUT
Consultant @ Red Hat
Application Development
Platform Engineering
Github: tiffanyjachja
Twitter: @tiffanyjachja

4. Clement Escoffier

5. Reactor Pattern

6. Multi-Reactor Pattern

7. import io.vertx.core.AbstractVerticle;
public class CheckoutVerticle extends AbstractVerticle {
...
public void processCheckout() {
String transactionID = generateID(xxxx);
PaymentInfo payload = new PaymentInfo(transactionID, X …);
vertx.eventBus().send(Services.ProcessPayment.getAddress(), payload, response -> {
handleResponse(response);
});
}
}

11. Span Context
Trace

12. import io.vertx.core.AbstractVerticle;
public class CheckoutVerticle extends AbstractVerticle {
Configuration configuration = new Configuration("Checkout-Service");
Tracer tracer = configuration.getTracerBuilder().build();
public void processCheckout(JsonObject payload) {
Span span = tracer.buildSpan("handleCheckoutRequest").start();
vertx.eventBus().send(Services.ProcessPayment.getAddress(), payload, response ->
{
handleResponse(response);
span.finish();
});
}
}

18. What are my microservices doing?
Thursday, May 9, 11:00 a.m.-11:45 a.m.
Juraci Paixão Kröhling, Red Hat
162A

19. RESOURCES
Vert.x
https://vertx.io/
Open Tracing API
https://opentracing.io/
CNCF Jaeger
https://www.jaegertracing.io/