• Web Server
  • Async servlet
  • Reactive servlet
• Zuul
• Web Clients
  • Reactive WebClient
  • Feign
• Async
  • TraceExecutors etc.
  • @Async
• Hystrix
• Messaging
• Reactor
• RxJava
• Scheduling

• Web Server
  • Simple handler interceptor
• Web Clients
  • RestTemplate
• Slf4j
  • with Brave in place it will also work for any other implementation (e.g. log4j)
• Async
  • Runnable / Callable

• SpanLogger
  • Name pattern of Span Logger will not be applicable
• Sampler
  • TODO: describe the new sampling mechanism
• Metric
  • TODO: discuss what happens to SpanMetricReporter - is anybody actually using it?

Before

import org.springframework.cloud.sleuth.Tracer;

Tracer tracer;

After

import brave.Tracing;

Tracing tracing;

Before

Span child = tracer.createSpan("name");

After

// tracing is brave.Tracing injected instead of Sleuth's Tracer
brave.Span span = tracing.tracer().nextSpan().name("name");

Before

Span child = tracer.createSpan("name");
try {
  // do sth
} finally {
  tracer.close(child);
}

After

// tracing is brave.Tracing injected instead of Sleuth's Tracer
brave.Span span = this.tracing.tracer().nextSpan().name("name");
try {
  // do sth
} finally {
  span.finish();
}

Before

tracer.addTag("foo", "bar");

After

// tracing is brave.Tracing injected instead of Sleuth's Tracer
this.tracing.tracer().currentSpan().tag("foo", "bar");

Before

org.springframework.cloud.sleuth.TraceRunnable
org.springframework.cloud.sleuth.TraceCallable

After

org.springframework.cloud.sleuth.instrument.async.TraceRunnable
org.springframework.cloud.sleuth.instrument.async.TraceCallable

Before

org.springframework.cloud.sleuth.util.ArrayListSpanAccumulator

After

org.springframework.cloud.sleuth.util.ArrayListSpanReporter

org.springframework.cloud.brave.sampler.SamplerProperties#percentage renamed to org.springframework.cloud.brave.sampler.SamplerProperties#probability

and

org.springframework.cloud.sleuth.sampler.PercentageBasedSampler renamed to org.springframework.cloud.sleuth.sampler.ProbabilityBasedSampler

Related to spring-cloud/spring-cloud-sleuth#397