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<title>9. Span lifecycle</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__instrumentation.html" title="8. Instrumentation"><link rel="next" href="multi__naming_spans.html" title="10. Naming spans"></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">9. Span lifecycle</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi__instrumentation.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi__naming_spans.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_span_lifecycle" href="#_span_lifecycle"></a>9. Span lifecycle</h1></div></div></div><p>You can do the following operations on the Span by means of <code class="literal">brave.Tracer</code>:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><a class="link" href="multi__span_lifecycle.html#creating-and-finishing-spans" title="9.1 Creating and finishing spans">start</a>: When you start a span, its name is assigned and the start timestamp is recorded.</li><li class="listitem"><a class="link" href="multi__span_lifecycle.html#creating-and-finishing-spans" title="9.1 Creating and finishing spans">close</a>: The span gets finished (the end time of the span is recorded) and, if the span is sampled, it is eligible for collection (for example, to Zipkin).</li><li class="listitem"><a class="link" href="multi__span_lifecycle.html#continuing-spans" title="9.2 Continuing Spans">continue</a>: A new instance of span is created.
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<title>9. Span lifecycle</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__instrumentation.html" title="8. Instrumentation"><link rel="next" href="multi__naming_spans.html" title="10. Naming spans"></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">9. Span lifecycle</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi__instrumentation.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi__naming_spans.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_span_lifecycle" href="#_span_lifecycle"></a>9. Span lifecycle</h1></div></div></div><p>You can do the following operations on the Span by means of <code class="literal">brave.Tracer</code>:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><a class="link" href="multi__span_lifecycle.html#creating-and-finishing-spans" title="9.1 Creating and finishing spans">start</a>: When you start a span, its name is assigned and the start timestamp is recorded.</li><li class="listitem"><a class="link" href="multi__span_lifecycle.html#creating-and-finishing-spans" title="9.1 Creating and finishing spans">close</a>: The span gets finished (the end time of the span is recorded) and, if the span is sampled, it is eligible for collection (for example, to Zipkin).</li><li class="listitem"><a class="link" href="multi__span_lifecycle.html#continuing-spans" title="9.2 Continuing Spans">continue</a>: A new instance of span is created.
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It is a copy of the one that it continues.</li><li class="listitem"><a class="link" href="multi__span_lifecycle.html#continuing-spans" title="9.2 Continuing Spans">detach</a>: The span does not get stopped or closed.
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It only gets removed from the current thread.</li><li class="listitem"><a class="link" href="multi__span_lifecycle.html#creating-spans-with-explicit-parent" title="9.3 Creating a Span with an explicit Parent">create with explicit parent</a>: You can create a new span and set an explicit parent for it.</li></ul></div><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Tip"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="images/tip.png"></td><th align="left">Tip</th></tr><tr><td align="left" valign="top"><p>Spring Cloud Sleuth creates an instance of <code class="literal">Tracer</code> for you. In order to use it, you can autowire it.</p></td></tr></table></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="creating-and-finishing-spans" href="#creating-and-finishing-spans"></a>9.1 Creating and finishing spans</h2></div></div></div><p>You can manually create spans by using the <code class="literal">Tracer</code>, as shown in the following example:</p><pre class="programlisting"><span xmlns:d="http://docbook.org/ns/docbook" class="hl-comment">// Start a span. If there was a span present in this thread it will become</span>
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<span xmlns:d="http://docbook.org/ns/docbook" class="hl-comment">// the `newSpan`'s parent.</span>
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