本文整理了Java中brave.Tracer.newTrace()方法的一些代码示例，展示了Tracer.newTrace()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Tracer.newTrace()方法的具体详情如下：
包路径：brave.Tracer
类名称：Tracer
方法名：newTrace

Tracer.newTrace介绍

[英]Explicitly creates a new trace. The result will be a root span (no parent span ID).

To implicitly create a new trace, or a span within an existing one, use #nextSpan().
[中]显式创建一个新跟踪。结果将是根范围（无父范围ID）。
要隐式创建新跟踪，或在现有跟踪中创建范围，请使用#nextSpan（）。

代码示例

代码示例来源：origin: openzipkin/brave

/**
 * Returns a new child span if there's a {@link #currentSpan()} or a new trace if there isn't.
 *
 * <p>Prefer {@link #startScopedSpan(String)} if you are tracing a synchronous function or code
 * block.
 */
public Span nextSpan() {
 TraceContext parent = currentTraceContext.get();
 return parent != null ? newChild(parent) : newTrace();
}

代码示例来源：origin: apache/servicecomb-java-chassis

private Span createSpan(String spanName, String path) {
 Span currentSpan = tracer.currentSpan();
 if (currentSpan != null) {
  return tracer.newChild(currentSpan.context()).name(spanName).tag(CALL_PATH, path).start();
 }
 return tracer.newTrace().name(spanName).tag(CALL_PATH, path).start();
}

代码示例来源：origin: io.zipkin.brave/brave

/**
 * Returns a new child span if there's a {@link #currentSpan()} or a new trace if there isn't.
 *
 * <p>Prefer {@link #startScopedSpan(String)} if you are tracing a synchronous function or code
 * block.
 */
public Span nextSpan() {
 TraceContext parent = currentTraceContext.get();
 return parent != null ? newChild(parent) : newTrace();
}

代码示例来源：origin: io.zipkin.brave/brave-core

/**
 * Returns a span representing the sampled status of the current server span or null if there's no
 * span attached to the current thread.
 */
@Nullable
public static brave.Span getServerSpan(Tracer tracer, ServerSpanThreadBinder threadBinder) {
 if (tracer == null) throw new NullPointerException("tracer == null");
 if (threadBinder == null) throw new NullPointerException("threadBinder == null");
 ServerSpan result = threadBinder.getCurrentServerSpan();
 if (result == null || result.equals(ServerSpan.EMPTY)) return null;
 if (result.getSpan() != null) return toSpan(tracer, result.getSpan());
 assert result.getSample() != null && !result.getSample() : "unexpected sample state: " + result;
 return tracer.withSampler(Sampler.NEVER_SAMPLE).newTrace();
}

代码示例来源：origin: io.zipkin.brave/brave-core

@Override Span nextSpan(@Nullable SpanId maybeParent) {
 brave.Span span = maybeParent != null
   ? tracer.newChild(toTraceContext(maybeParent))
   : tracer.newTrace();
 return Brave.toSpan(toSpanId(span.context()));
}

代码示例来源：origin: ww20081120/framework

Span span = tracer.currentSpan();
if (span == null) {
  span = tracer.newTrace();

代码示例来源：origin: apache/cxf

private TraceScope newOrChildSpan(final String description, final Span parent) {
    if (parent == null) { 
      return new TraceScope(brave, tracer.newTrace().name(description).start());
    }
    return new TraceScope(brave, tracer.newChild(parent.context()).name(description).start());
  }
}

代码示例来源：origin: org.apache.cxf/cxf-integration-tracing-brave

private TraceScope newOrChildSpan(final String description, final Span parent) {
    if (parent == null) { 
      return new TraceScope(brave, tracer.newTrace().name(description).start());
    }
    return new TraceScope(brave, tracer.newChild(parent.context()).name(description).start());
  }
}

代码示例来源：origin: openzipkin-contrib/brave-opentracing

span = scopedBraveTracer.newTrace();
} else if ((context = reference.unwrap()) != null) {

代码示例来源：origin: org.apache.servicecomb/tracing-zipkin

private Span createSpan(String spanName, String path) {
 Span currentSpan = tracer.currentSpan();
 if (currentSpan != null) {
  return tracer.newChild(currentSpan.context()).name(spanName).tag(CALL_PATH, path).start();
 }
 return tracer.newTrace().name(spanName).tag(CALL_PATH, path).start();
}

代码示例来源：origin: io.servicecomb/tracing-zipkin

private Span createSpan(String spanName, String path) {
 Span currentSpan = tracer.currentSpan();
 if (currentSpan != null) {
  return tracer.newChild(currentSpan.context()).name(spanName).tag(CALL_PATH, path).start();
 }
 return tracer.newTrace().name(spanName).tag(CALL_PATH, path).start();
}

代码示例来源：origin: jaegertracing/spark-dependencies

@Override
public void createChildSpan(TracingWrapper<ZipkinWrapper> parent) {
 operationName = UUID.randomUUID().toString().replace("-","");
 if (parent == null) {
  // root node we start a new trace
  span = tracing.tracer().newTrace().name(operationName + "-root")
    .start();
 } else {
  brave.Span parentClient = parent.get().tracing.tracer().newChild(parent.get().span.context())
    .kind(Kind.CLIENT)
    .name(operationName + "-client")
    .start();
  // TODO if I finish this later the span is cached
  // and joined with server span and reported as a single span.
  // to properly solve this we have to look into the tags.
  // However there is another problem jaeger adds only one span.kind
  // (even if span contains cs,cr,sr,ss)
  // And it filters out core annotations, so there is no way how to find out
  // that there is a dependency link in this span.
  // https://github.com/jaegertracing/jaeger/issues/451
  parentClient.finish();
  span = tracing.tracer().joinSpan(parentClient.context())
    .name(operationName + "-server")
    .kind(Kind.SERVER)
    .start();
 }
}