Sync docs from master to gh-pages
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Marcin Grzejszczak
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<title>2. Features</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="spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="up" href="spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="prev" href="_additional_resources.html" title="1. Additional resources"><link rel="next" href="_sampling.html" title="3. Sampling"></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">2. Features</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="_additional_resources.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="_sampling.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_features" href="#_features"></a>2. Features</h1></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p class="simpara">Adds trace and span ids to the Slf4J MDC, so you can extract all the logs from a given trace or span in a log aggregator. Example logs:</p><pre class="screen">2016-02-02 15:30:57.902 INFO [bar,6bfd228dc00d216b,6bfd228dc00d216b,false] 23030 --- [nio-8081-exec-3] ...
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<title>3. Features</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="spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="up" href="spring-cloud-sleuth.html" title="Spring Cloud Sleuth"><link rel="prev" href="_additional_resources.html" title="2. Additional resources"><link rel="next" href="_sampling.html" title="4. Sampling"></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">3. Features</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="_additional_resources.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="_sampling.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_features" href="#_features"></a>3. Features</h1></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p class="simpara">Adds trace and span ids to the Slf4J MDC, so you can extract all the logs from a given trace or span in a log aggregator. Example logs:</p><pre class="screen">2016-02-02 15:30:57.902 INFO [bar,6bfd228dc00d216b,6bfd228dc00d216b,false] 23030 --- [nio-8081-exec-3] ...
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2016-02-02 15:30:58.372 ERROR [bar,6bfd228dc00d216b,6bfd228dc00d216b,false] 23030 --- [nio-8081-exec-3] ...
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2016-02-02 15:31:01.936 INFO [bar,46ab0d418373cbc9,46ab0d418373cbc9,false] 23030 --- [nio-8081-exec-4] ...</pre><p class="simpara">notice the <code class="literal">[appname,traceId,spanId,exportable]</code> entries from the MDC:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; "><li class="listitem"><span class="strong"><strong>spanId</strong></span> - the id of a specific operation that took place</li><li class="listitem"><span class="strong"><strong>appname</strong></span> - the name of the application that logged the span</li><li class="listitem"><span class="strong"><strong>traceId</strong></span> - the id of the latency graph that contains the span</li><li class="listitem"><span class="strong"><strong>exportable</strong></span> - whether the log should be exported to Zipkin or not. When would you like the span not to be
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exportable? In the case in which you want to wrap some operation in a Span and have it written to the logs
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@@ -19,4 +19,4 @@ Your app automatically becomes a producer of tracer messages that are sent over
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above. Other logging systems have to configure their own formatter to get the same result. The default is
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<code class="literal">logging.pattern.level</code> set to <code class="literal">%5p [${spring.zipkin.service.name:${spring.application.name:-}},%X{X-B3-TraceId:-},%X{X-B3-SpanId:-},%X{X-Span-Export:-}]</code>
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(this is a Spring Boot feature for logback users).
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<span class="strong"><strong>This means that if you’re not using SLF4J this pattern WILL NOT be automatically applied</strong></span>.</p></td></tr></table></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="_additional_resources.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="_sampling.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">1. Additional resources </td><td width="20%" align="center"><a accesskey="h" href="spring-cloud-sleuth.html">Home</a></td><td width="40%" align="right" valign="top"> 3. Sampling</td></tr></table></div></body></html>
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<span class="strong"><strong>This means that if you’re not using SLF4J this pattern WILL NOT be automatically applied</strong></span>.</p></td></tr></table></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="_additional_resources.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="_sampling.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">2. Additional resources </td><td width="20%" align="center"><a accesskey="h" href="spring-cloud-sleuth.html">Home</a></td><td width="40%" align="right" valign="top"> 4. Sampling</td></tr></table></div></body></html>
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