THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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In the following subsections we are going to walk through many different scenarios to illustrate the distributed tracing in action, starting from the simplest ones and finishing with asynchronous JAX-RS services. All examples assume that configuration has been done (see please Configuring Client and Configuring Server sections above). In this example, both client and server use OpenTelemetry tracing bridge:
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final Resource resource = Resource.getDefault().merge(
Resource.create(Attributes.of(ResourceAttributes.SERVICE_NAME, "...")));
final SdkTracerProvider sdkTracerProvider = SdkTracerProvider.builder()
.addSpanProcessor(BatchSpanProcessor.builder(OtlpGrpcSpanExporter.builder().build()).build())
.setSampler(Sampler.alwaysOn())
.setResource(resource)
.build();
final OpenTelemetrySdk openTelemetrySdk = OpenTelemetrySdk.builder()
.setTracerProvider(sdkTracerProvider)
.setPropagators(ContextPropagators.create(W3CTraceContextPropagator.getInstance()))
.buildAndRegisterGlobal();
final OtelCurrentTraceContext bridgeContext = new OtelCurrentTraceContext();
final io.opentelemetry.api.trace.Tracer otelTracer = openTelemetrySdk.getTracer("...");
final OtelPropagator propagator = new OtelPropagator(ContextPropagators.create(
TextMapPropagator.composite(W3CTraceContextPropagator.getInstance())), otelTracer);
final Slf4JEventListener slf4JEventListener = new Slf4JEventListener();
final Slf4JBaggageEventListener slf4JBaggageEventListener = new Slf4JBaggageEventListener(Collections.emptyList());
final ObservationRegistry observationRegistry = ObservationRegistry.create();
final OtelTracer tracer = new OtelTracer(otelTracer, bridgeContext, event -> {
slf4JEventListener.onEvent(event);
slf4JBaggageEventListener.onEvent(event);
});
observationRegistry.observationConfig().observationHandler(
new FirstMatchingCompositeObservationHandler(
new PropagatingSenderTracingObservationHandler<>(tracer, propagator),
new PropagatingReceiverTracingObservationHandler<>(tracer, propagator)
)
); |
Example #1: Client and Server with default distributed tracing configured
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