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<title>7.&nbsp;Current Span</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="up" href="multi_spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="prev" href="multi__current_tracing_component.html" title="6.&nbsp;Current Tracing Component"><link rel="next" href="multi__instrumentation.html" title="8.&nbsp;Instrumentation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">7.&nbsp;Current Span</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi__current_tracing_component.html">Prev</a>&nbsp;</td><th width="60%" align="center">&nbsp;</th><td width="20%" align="right">&nbsp;<a accesskey="n" href="multi__instrumentation.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_current_span" href="#_current_span"></a>7.&nbsp;Current Span</h1></div></div></div><p>Brave supports a "<code class="literal">current span</code>" concept which represents the in-flight operation.
<title>7.&nbsp;Current Span</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="multi_spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="up" href="multi_spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="prev" href="multi__current_tracing_component.html" title="6.&nbsp;Current Tracing Component"><link rel="next" href="multi__instrumentation.html" title="8.&nbsp;Instrumentation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">7.&nbsp;Current Span</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi__current_tracing_component.html">Prev</a>&nbsp;</td><th width="60%" align="center">&nbsp;</th><td width="20%" align="right">&nbsp;<a accesskey="n" href="multi__instrumentation.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_current_span" href="#_current_span"></a>7.&nbsp;Current Span</h1></div></div></div><p>Brave supports a "<code class="literal">current span</code>" concept which represents the in-flight operation.
You can use <code class="literal">Tracer.currentSpan()</code> to add custom tags to a span and <code class="literal">Tracer.nextSpan()</code> to create a child of whatever is in-flight.</p><div class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Important"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="images/important.png"></td><th align="left">Important</th></tr><tr><td align="left" valign="top"><p>In Sleuth, you can autowire the <code class="literal">Tracer</code> bean to retrieve the current span via
<code class="literal">tracer.currentSpan()</code> method. To retrieve the current context just call
<code class="literal">tracer.currentSpan().context()</code>. To get the current trace id as String