Java Code Examples for brave.propagation.TraceContext#Injector

The following examples show how to use brave.propagation.TraceContext#Injector . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: InjectorFactory.java    From brave with Apache License 2.0 6 votes vote down vote up 
/**
 * Creates a potentially composite injector if the input is an instance of {@link RemoteSetter}.
 * Otherwise, a deferred injector is return that examples the request parameter to decide if it is
 * remote or not.
 */
public <R> TraceContext.Injector<R> newInjector(Setter<R, String> setter) {
  if (setter == null) throw new NullPointerException("setter == null");
  if (setter instanceof RemoteSetter) {
    RemoteSetter<?> remoteSetter = (RemoteSetter<?>) setter;
    switch (remoteSetter.spanKind()) {
      case CLIENT:
        return new RemoteInjector<>(setter, clientInjectorFunction);
      case PRODUCER:
        return new RemoteInjector<>(setter, producerInjectorFunction);
      case CONSUMER:
        return new RemoteInjector<>(setter, consumerInjectorFunction);
      default: // SERVER is nonsense as it cannot be injected
    }
  }
  return new DeferredInjector<>(setter, this);
}
Example 2
Source File: DubboClientHandler.java    From brave-instrumentation-dubbo with Apache License 2.0 5 votes vote down vote up 
/**
 * Starts the client span after assigning it a name and tags.
 */
public Span handleSend(TraceContext.Extractor extractor, TraceContext.Injector injector) {
  Span span = nextSpan(extractor.extract(RpcContext.getContext().getAttachments()));
  injector.inject(span.context(), RpcContext.getContext().getAttachments());
  if (span.isNoop()) return span;
  span.kind(Span.Kind.CLIENT);
  Tracer.SpanInScope ws = tracer.withSpanInScope(span);
  try {
    parser.request(adapter, RpcContext.getContext(), span);
  } finally {
    ws.close();
  }
  return span.start();
}
Example 3
Source File: PropagationTest.java    From brave with Apache License 2.0 5 votes vote down vote up 
@Override public void accept(Propagation<?> propagation) {
  TraceContext.Injector<Map<Object, String>> injector = propagation.injector(Map::put);
  TraceContext.Extractor<Map<Object, String>> extractor = propagation.extractor(Map::get);

  TraceContext ctx = TraceContext.newBuilder().traceId(1L).spanId(2L).sampled(false).build();
  Map<Object, String> map = new LinkedHashMap<>();
  injector.inject(ctx, map);

  assertThat(extractor.extract(map).context())
    .isEqualToIgnoringGivenFields(ctx, "traceIdString", "spanIdString");
}
Example 4
Source File: ITKafkaTracing.java    From brave with Apache License 2.0 4 votes vote down vote up 
@Override public <R> TraceContext.Injector<R> injector(Setter<R, String> setter) {
  return (traceContext, request) -> setter.put(request, TRACE_ID, traceContext.traceIdString());
}