6 lines
3.2 KiB
HTML
6 lines
3.2 KiB
HTML
<html><head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>56. Instrumentation</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.html" title="Spring Cloud"><link rel="up" href="multi__spring_cloud_sleuth.html" title="Part VIII. Spring Cloud Sleuth"><link rel="prev" href="multi__current_span.html" title="55. Current Span"><link rel="next" href="multi__span_lifecycle.html" title="57. Span lifecycle"></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">56. Instrumentation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi__current_span.html">Prev</a> </td><th width="60%" align="center">Part VIII. Spring Cloud Sleuth</th><td width="20%" align="right"> <a accesskey="n" href="multi__span_lifecycle.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a name="_instrumentation" href="#_instrumentation"></a>56. Instrumentation</h2></div></div></div><p>Spring Cloud Sleuth automatically instruments all your Spring applications, so you should not have to do anything to activate it.
|
|
The instrumentation is added by using a variety of technologies according to the stack that is available. For example, for a servlet web application, we use a <code class="literal">Filter</code>, and, for Spring Integration, we use <code class="literal">ChannelInterceptors</code>.</p><p>You can customize the keys used in span tags.
|
|
To limit the volume of span data, an HTTP request is, by default, tagged only with a handful of metadata, such as the status code, the host, and the URL.
|
|
You can add request headers by configuring <code class="literal">spring.sleuth.keys.http.headers</code> (a list of header names).</p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Note"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="images/note.png"></td><th align="left">Note</th></tr><tr><td align="left" valign="top"><p>Tags are collected and exported only if there is a <code class="literal">Sampler</code> that allows it. By default, there is no such <code class="literal">Sampler</code>, to ensure that there is no danger of accidentally collecting too much data without configuring something).</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="multi__current_span.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="multi__spring_cloud_sleuth.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="multi__span_lifecycle.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">55. Current Span </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud.html">Home</a></td><td width="40%" align="right" valign="top"> 57. Span lifecycle</td></tr></table></div></body></html> |