Vertx OpenTracing

Vert.x integrates with OpenTracing thanks to the Jaeger client.

You can configure Vert.x to use the Jaeger client configured via Environment

Vertx vertx = Vertx.vertx(new VertxOptions()
  .setTracingOptions(
    new OpenTracingOptions()
  )
);

You can also pass a custom Tracer allowing for greater control over the configuration.

Vertx vertx = Vertx.vertx(new VertxOptions()
  .setTracingOptions(
    new OpenTracingOptions(tracer)
  )
);

Tracing policy

The tracing policy defines the behavior of a component when tracing is enabled:

PROPAGATE: the component reports a span in the active trace
ALWAYS: the component reports a span in the active trace or creates a new active trace
IGNORE: the component will not be involved in any trace.

The tracing policy is usually configured in the component options.

The Vert.x HTTP server and client reports span around HTTP requests:

The default HTTP server tracing policy is ALWAYS, you can configure the policy with setTracingPolicy

HttpServer server = vertx.createHttpServer(new HttpServerOptions()
  .setTracingPolicy(TracingPolicy.IGNORE)
);

The default HTTP client tracing policy is PROPAGATE, you can configure the policy with setTracingPolicy

HttpClient client = vertx.createHttpClient(new HttpClientOptions()
  .setTracingPolicy(TracingPolicy.IGNORE)
);