|
|
|
|
|
|
|
|
<!DOCTYPE html>
|
|
|
<!--[if IE 8]><html class="no-js lt-ie9" lang="zh-CN" > <![endif]-->
|
|
|
<!--[if gt IE 8]><!--> <html class="no-js" lang="zh-CN" > <!--<![endif]-->
|
|
|
<head>
|
|
|
<meta charset="utf-8">
|
|
|
|
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
|
|
|
|
<title>watch — Arthas 3.0.6-SNAPSHOT 文档</title>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<link rel="shortcut icon" href="_static/favicon.ico"/>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
|
|
|
<link rel="stylesheet" href="_static/pygments.css" type="text/css" />
|
|
|
<link rel="stylesheet" href="_static/overrides.css" type="text/css" />
|
|
|
<link rel="index" title="索引" href="genindex.html" />
|
|
|
<link rel="search" title="搜索" href="search.html" />
|
|
|
<link rel="next" title="trace" href="trace.html" />
|
|
|
<link rel="prev" title="monitor" href="monitor.html" />
|
|
|
<script src="_static/center_page.js"></script>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<script src="_static/js/modernizr.min.js"></script>
|
|
|
|
|
|
</head>
|
|
|
|
|
|
<body class="wy-body-for-nav">
|
|
|
|
|
|
|
|
|
<div class="wy-grid-for-nav">
|
|
|
|
|
|
|
|
|
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
|
|
|
<div class="wy-side-scroll">
|
|
|
<div class="wy-side-nav-search">
|
|
|
|
|
|
|
|
|
|
|
|
<a href="index.html" class="icon icon-home"> Arthas
|
|
|
|
|
|
|
|
|
|
|
|
</a>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<div class="version">
|
|
|
3.0.6-SNAPSHOT
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<div role="search">
|
|
|
<form id="rtd-search-form" class="wy-form" action="search.html" method="get">
|
|
|
<input type="text" name="q" placeholder="Search docs" />
|
|
|
<input type="hidden" name="check_keywords" value="yes" />
|
|
|
<input type="hidden" name="area" value="default" />
|
|
|
</form>
|
|
|
</div>
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<ul class="current">
|
|
|
<li class="toctree-l1"><a class="reference external" href="https://alibaba.github.io/arthas/en/">English Docs</a></li>
|
|
|
<li class="toctree-l1"><a class="reference internal" href="install-detail.html">安装</a></li>
|
|
|
<li class="toctree-l1"><a class="reference internal" href="quick-start.html">快速入门</a></li>
|
|
|
<li class="toctree-l1"><a class="reference internal" href="advanced-use.html">进阶使用</a></li>
|
|
|
<li class="toctree-l1 current"><a class="reference internal" href="commands.html">命令列表</a><ul class="current">
|
|
|
<li class="toctree-l2"><a class="reference internal" href="dashboard.html">dashboard</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="thread.html">thread</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="jvm.html">jvm</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="sysprop.html">sysprop</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="sysenv.html">sysenv</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="getstatic.html">getstatic</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="ognl.html">ognl</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="sc.html">sc</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="sm.html">sm</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="dump.html">dump</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="jad.html">jad</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="classloader.html">classloader</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="redefine.html">redefine</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="monitor.html">monitor</a></li>
|
|
|
<li class="toctree-l2 current"><a class="current reference internal" href="#">watch</a><ul>
|
|
|
<li class="toctree-l3"><a class="reference internal" href="#">参数说明</a></li>
|
|
|
<li class="toctree-l3"><a class="reference internal" href="#">使用参考</a><ul>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">观察方法出参和返回值</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">观察方法入参</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">同时观察方法调用前和方法返回后</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#x">调整<code class="docutils literal notranslate"><span class="pre">-x</span></code>的值，观察具体的方法参数值</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">条件表达式的例子</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">观察异常信息的例子</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">按照耗时进行过滤</a></li>
|
|
|
<li class="toctree-l4"><a class="reference internal" href="#">观察当前对象中的全局属性</a></li>
|
|
|
</ul>
|
|
|
</li>
|
|
|
</ul>
|
|
|
</li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="trace.html">trace</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="stack.html">stack</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="tt.html">tt</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="options.html">options</a></li>
|
|
|
<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas">Arthas 基础命令</a></li>
|
|
|
</ul>
|
|
|
</li>
|
|
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case">用户案例</a></li>
|
|
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered">Questions and answers</a></li>
|
|
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas">Fork me at GitHub</a></li>
|
|
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md">参与贡献</a></li>
|
|
|
<li class="toctree-l1"><a class="reference internal" href="release-notes.html">Release Notes</a></li>
|
|
|
<li class="toctree-l1"><a class="reference internal" href="contact-us.html">QQ群/钉钉群</a></li>
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
</div>
|
|
|
</nav>
|
|
|
|
|
|
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
|
|
|
|
|
|
|
|
|
<nav class="wy-nav-top" aria-label="top navigation">
|
|
|
|
|
|
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
|
|
|
<a href="index.html">Arthas</a>
|
|
|
|
|
|
</nav>
|
|
|
|
|
|
|
|
|
<div class="wy-nav-content">
|
|
|
|
|
|
<div class="rst-content">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<div role="navigation" aria-label="breadcrumbs navigation">
|
|
|
|
|
|
<ul class="wy-breadcrumbs">
|
|
|
|
|
|
<li><a href="index.html">Docs</a> »</li>
|
|
|
|
|
|
<li><a href="commands.html">命令列表</a> »</li>
|
|
|
|
|
|
<li>watch</li>
|
|
|
|
|
|
|
|
|
<li class="wy-breadcrumbs-aside">
|
|
|
|
|
|
|
|
|
|
|
|
<a href="https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/watch.md" class="fa fa-github"> Edit on GitHub</a>
|
|
|
|
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
<hr/>
|
|
|
</div>
|
|
|
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
|
|
<div itemprop="articleBody">
|
|
|
|
|
|
<div class="section" id="watch">
|
|
|
<span id="watch"></span><h1>watch<a class="headerlink" href="#watch" title="永久链接至标题">¶</a></h1>
|
|
|
<blockquote>
|
|
|
<div>方法执行数据观测</div></blockquote>
|
|
|
<p>让你能方便的观察到指定方法的调用情况。能观察到的范围为：<code class="docutils literal notranslate"><span class="pre">返回值</span></code>、<code class="docutils literal notranslate"><span class="pre">抛出异常</span></code>、<code class="docutils literal notranslate"><span class="pre">入参</span></code>，通过编写 OGNL 表达式进行对应变量的查看。</p>
|
|
|
<div class="section" id="">
|
|
|
<span id="id1"></span><h2>参数说明<a class="headerlink" href="#" title="永久链接至标题">¶</a></h2>
|
|
|
<p>watch 的参数比较多，主要是因为它能在 4 个不同的场景观察对象</p>
|
|
|
<table border="1" class="docutils">
|
|
|
<thead>
|
|
|
<tr>
|
|
|
<th align="right">参数名称</th>
|
|
|
<th align="left">参数说明</th>
|
|
|
</tr>
|
|
|
</thead>
|
|
|
<tbody>
|
|
|
<tr>
|
|
|
<td align="right"><em>class-pattern</em></td>
|
|
|
<td align="left">类名表达式匹配</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right"><em>method-pattern</em></td>
|
|
|
<td align="left">方法名表达式匹配</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right"><em>express</em></td>
|
|
|
<td align="left">观察表达式</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right"><em>condition-express</em></td>
|
|
|
<td align="left">条件表达式</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right">[b]</td>
|
|
|
<td align="left">在<strong>方法调用之前</strong>观察</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right">[e]</td>
|
|
|
<td align="left">在<strong>方法异常之后</strong>观察</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right">[s]</td>
|
|
|
<td align="left">在<strong>方法返回之后</strong>观察</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right">[f]</td>
|
|
|
<td align="left">在<strong>方法结束之后</strong>(正常返回和异常返回)观察</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right">[E]</td>
|
|
|
<td align="left">开启正则表达式匹配，默认为通配符匹配</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td align="right">[x:]</td>
|
|
|
<td align="left">指定输出结果的属性遍历深度，默认为 1</td>
|
|
|
</tr>
|
|
|
</tbody>
|
|
|
</table><p>这里重点要说明的是观察表达式，观察表达式的构成主要由 ognl 表达式组成，所以你可以这样写<code class="docutils literal notranslate"><span class="pre">"{params,returnObj}"</span></code>，只要是一个合法的 ognl 表达式，都能被正常支持。</p>
|
|
|
<p>观察的维度也比较多，主要体现在参数 <code class="docutils literal notranslate"><span class="pre">advice</span></code> 的数据结构上。<code class="docutils literal notranslate"><span class="pre">Advice</span></code> 参数最主要是封装了通知节点的所有信息。请参考<a class="reference internal" href="advice-class.html"><span class="doc">表达式核心变量</span></a>中关于该节点的描述。</p>
|
|
|
<ul class="simple">
|
|
|
<li>特殊用法请参考：<a class="reference external" href="https://github.com/alibaba/arthas/issues/71">https://github.com/alibaba/arthas/issues/71</a></li>
|
|
|
<li>OGNL表达式官网：<a class="reference external" href="https://commons.apache.org/proper/commons-ognl/language-guide.html">https://commons.apache.org/proper/commons-ognl/language-guide.html</a></li>
|
|
|
</ul>
|
|
|
<p><strong>特别说明</strong>：</p>
|
|
|
<ul class="simple">
|
|
|
<li>watch 命令定义了4个观察事件点，即 <code class="docutils literal notranslate"><span class="pre">-b</span></code> 方法调用前，<code class="docutils literal notranslate"><span class="pre">-e</span></code> 方法异常后，<code class="docutils literal notranslate"><span class="pre">-s</span></code> 方法返回后和 <code class="docutils literal notranslate"><span class="pre">-f</span></code> 方法结束后</li>
|
|
|
<li>4个观察事件点 <code class="docutils literal notranslate"><span class="pre">-b</span></code>、<code class="docutils literal notranslate"><span class="pre">-e</span></code>、<code class="docutils literal notranslate"><span class="pre">-s</span></code> 默认关闭，<code class="docutils literal notranslate"><span class="pre">-f</span></code> 默认打开，当指定观察点被打开后，在相应事件点会对观察表达式进行求值并输出</li>
|
|
|
<li>这里要注意<code class="docutils literal notranslate"><span class="pre">方法入参</span></code>和<code class="docutils literal notranslate"><span class="pre">方法出参</span></code>的区别，有可能在中间被修改导致前后不一致，除了 <code class="docutils literal notranslate"><span class="pre">-b</span></code> 事件点 <code class="docutils literal notranslate"><span class="pre">params</span></code> 代表方法入参外，其余事件都代表方法出参</li>
|
|
|
<li>当使用 <code class="docutils literal notranslate"><span class="pre">-b</span></code> 时，由于观察事件点是在方法调用前，此时返回值或异常均不存在</li>
|
|
|
</ul>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id2"></span><h2>使用参考<a class="headerlink" href="#" title="永久链接至标题">¶</a></h2>
|
|
|
<p>代码示例：</p>
|
|
|
<div class="highlight-java notranslate"><div class="highlight"><pre><span></span> <span class="kd">public</span> <span class="kt">void</span> <span class="nf">execute</span><span class="o">()</span> <span class="o">{</span>
|
|
|
<span class="n">List</span><span class="o"><</span><span class="n">String</span><span class="o">></span> <span class="n">list</span> <span class="o">=</span> <span class="k">new</span> <span class="n">ArrayList</span><span class="o"><</span><span class="n">String</span><span class="o">>();</span>
|
|
|
<span class="n">list</span><span class="o">.</span><span class="na">add</span><span class="o">(</span><span class="s">"a"</span><span class="o">);</span>
|
|
|
<span class="n">list</span><span class="o">.</span><span class="na">add</span><span class="o">(</span><span class="s">"b"</span><span class="o">);</span>
|
|
|
|
|
|
<span class="n">List</span><span class="o"><</span><span class="n">String</span><span class="o">></span> <span class="n">list2</span> <span class="o">=</span> <span class="k">new</span> <span class="n">ArrayList</span><span class="o"><</span><span class="n">String</span><span class="o">>();</span>
|
|
|
<span class="n">list2</span><span class="o">.</span><span class="na">add</span><span class="o">(</span><span class="s">"c"</span><span class="o">);</span>
|
|
|
<span class="n">list2</span><span class="o">.</span><span class="na">add</span><span class="o">(</span><span class="s">"d"</span><span class="o">);</span>
|
|
|
|
|
|
<span class="kt">int</span> <span class="n">len</span> <span class="o">=</span> <span class="n">add</span><span class="o">(</span><span class="n">list</span><span class="o">,</span> <span class="n">list2</span><span class="o">);</span>
|
|
|
<span class="o">}</span>
|
|
|
|
|
|
<span class="kd">private</span> <span class="kd">static</span> <span class="kt">int</span> <span class="nf">add</span><span class="o">(</span><span class="n">List</span><span class="o"><</span><span class="n">String</span><span class="o">></span> <span class="n">list</span><span class="o">,</span> <span class="n">List</span><span class="o"><</span><span class="n">String</span><span class="o">></span> <span class="n">list2</span><span class="o">)</span> <span class="o">{</span>
|
|
|
<span class="n">list</span><span class="o">.</span><span class="na">addAll</span><span class="o">(</span><span class="n">list2</span><span class="o">);</span>
|
|
|
<span class="k">return</span> <span class="n">list</span><span class="o">.</span><span class="na">size</span><span class="o">();</span>
|
|
|
<span class="o">}</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id3"></span><h3>观察方法出参和返回值<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add <span class="s2">"{params,returnObj}"</span> -x <span class="m">2</span>
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">44</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">4</span><span class="o">]</span>,
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">2</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
@Integer<span class="o">[</span><span class="m">4</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id4"></span><h3>观察方法入参<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add <span class="s2">"{params,returnObj}"</span> -x <span class="m">2</span> -b
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">48</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">2</span><span class="o">]</span>,
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">2</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
null,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<blockquote>
|
|
|
<div>对比前一个例子，params[0] 其size为2（入参），返回值为空（事件点为方法执行前，因此获取不到返回值）</div></blockquote>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id5"></span><h3>同时观察方法调用前和方法返回后<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add <span class="s2">"{params,returnObj}"</span> -x <span class="m">2</span> -b -s
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">59</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">2</span><span class="o">]</span>,
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">2</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
null,
|
|
|
<span class="o">]</span>
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">4</span><span class="o">]</span>,
|
|
|
@ArrayList<span class="o">[</span><span class="nv">isEmpty</span><span class="o">=</span>false<span class="p">;</span><span class="nv">size</span><span class="o">=</span><span class="m">2</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
@Integer<span class="o">[</span><span class="m">4</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<blockquote>
|
|
|
<div>这里输出结果中，第一次输出的是方法调用前的观察表达式的结果，第二次输出的是方法返回后的表达式的结果</div></blockquote>
|
|
|
<blockquote>
|
|
|
<div>结果的顺序和命令中 <code class="docutils literal notranslate"><span class="pre">-s</span> <span class="pre">-b</span></code> 的顺序没有关系，只与事件本身的先后顺序有关</div></blockquote>
|
|
|
</div>
|
|
|
<div class="section" id="x">
|
|
|
<span id="x"></span><h3>调整<code class="docutils literal notranslate"><span class="pre">-x</span></code>的值，观察具体的方法参数值<a class="headerlink" href="#x" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add <span class="s2">"{params,returnObj}"</span> -x <span class="m">3</span>
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">59</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@String<span class="o">[</span>a<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>b<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>c<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>d<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@String<span class="o">[</span>c<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>d<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
@Integer<span class="o">[</span><span class="m">4</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<blockquote>
|
|
|
<div><code class="docutils literal notranslate"><span class="pre">-x</span></code>表示遍历深度，可以调整来打印具体的参数和结果内容。</div></blockquote>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id6"></span><h3>条件表达式的例子<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.biz.impl.UserManagerImpl testAdd <span class="s2">"{params, returnObj}"</span> <span class="s2">"params[0].equals('aaa')"</span> -x <span class="m">2</span>
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">29</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@String<span class="o">[</span>aaa<span class="o">]</span>,
|
|
|
@String<span class="o">[</span>bbb<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
@Integer<span class="o">[</span><span class="m">6</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<blockquote>
|
|
|
<div>只有满足条件的调用，才会有响应。</div></blockquote>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id7"></span><h3>观察异常信息的例子<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.biz.impl.UserManagerImpl testAdd <span class="s2">"{params, throwExp}"</span> -e -x <span class="m">2</span>
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">29</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@String<span class="o">[</span>aaa<span class="o">]</span>,
|
|
|
@String<span class="o">[</span>bbb<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
java.lang.NullPointerException
|
|
|
at com.alibaba.sample.petstore.biz.impl.UserManagerImpl.testAdd<span class="o">(</span>UserManagerImpl.java:75<span class="o">)</span>
|
|
|
at com.alibaba.sample.petstore.biz.impl.UserManagerImpl.register<span class="o">(</span>UserManagerImpl.java:60<span class="o">)</span>
|
|
|
at com.alibaba.sample.petstore.web.user.module.action.RegisterAction.doRegister<span class="o">(</span>RegisterAction.java:45<span class="o">)</span>
|
|
|
at com.alibaba.sample.petstore.web.user.module.action.RegisterAction<span class="nv">$$</span>FastClassByCGLIB<span class="nv">$$</span>ad5428f1.invoke<span class="o">(</span><generated><span class="o">)</span>
|
|
|
at net.sf.cglib.reflect.FastMethod.invoke<span class="o">(</span>FastMethod.java:53<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.moduleloader.impl.adapter.MethodInvoker.invoke<span class="o">(</span>MethodInvoker.java:70<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.moduleloader.impl.adapter.AbstractModuleEventAdapter.executeAndReturn<span class="o">(</span>AbstractModuleEventAdapter.java:100<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.moduleloader.impl.adapter.AbstractModuleEventAdapter.execute<span class="o">(</span>AbstractModuleEventAdapter.java:58<span class="o">)</span>
|
|
|
at com.alibaba.citrus.turbine.pipeline.valve.PerformActionValve.invoke<span class="o">(</span>PerformActionValve.java:63<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invoke<span class="o">(</span>PipelineImpl.java:210<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.valve.ChooseValve.invoke<span class="o">(</span>ChooseValve.java:98<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invoke<span class="o">(</span>PipelineImpl.java:210<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.valve.LoopValve.invokeBody<span class="o">(</span>LoopValve.java:105<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.valve.LoopValve.invoke<span class="o">(</span>LoopValve.java:83<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.turbine.pipeline.valve.PageAuthorizationValve.invoke<span class="o">(</span>PageAuthorizationValve.java:105<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.turbine.pipeline.valve.CheckCsrfTokenValve.invoke<span class="o">(</span>CheckCsrfTokenValve.java:123<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.turbine.pipeline.valve.AnalyzeURLValve.invoke<span class="o">(</span>AnalyzeURLValve.java:126<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.turbine.pipeline.valve.SetLoggingContextValve.invoke<span class="o">(</span>SetLoggingContextValve.java:66<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.turbine.pipeline.valve.PrepareForTurbineValve.invoke<span class="o">(</span>PrepareForTurbineValve.java:52<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invokeNext<span class="o">(</span>PipelineImpl.java:157<span class="o">)</span>
|
|
|
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl<span class="nv">$PipelineContextImpl</span>.invoke<span class="o">(</span>PipelineImpl.java:210<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.impl.WebxControllerImpl.service<span class="o">(</span>WebxControllerImpl.java:43<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.impl.WebxRootControllerImpl.handleRequest<span class="o">(</span>WebxRootControllerImpl.java:53<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.support.AbstractWebxRootController.service<span class="o">(</span>AbstractWebxRootController.java:165<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.servlet.WebxFrameworkFilter.doFilter<span class="o">(</span>WebxFrameworkFilter.java:152<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.servlet.FilterBean.doFilter<span class="o">(</span>FilterBean.java:148<span class="o">)</span>
|
|
|
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter<span class="o">(</span>ApplicationFilterChain.java:241<span class="o">)</span>
|
|
|
at org.apache.catalina.core.ApplicationFilterChain.doFilter<span class="o">(</span>ApplicationFilterChain.java:208<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.servlet.SetLoggingContextFilter.doFilter<span class="o">(</span>SetLoggingContextFilter.java:61<span class="o">)</span>
|
|
|
at com.alibaba.citrus.webx.servlet.FilterBean.doFilter<span class="o">(</span>FilterBean.java:148<span class="o">)</span>
|
|
|
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter<span class="o">(</span>ApplicationFilterChain.java:241<span class="o">)</span>
|
|
|
at org.apache.catalina.core.ApplicationFilterChain.doFilter<span class="o">(</span>ApplicationFilterChain.java:208<span class="o">)</span>
|
|
|
at org.apache.catalina.core.StandardWrapperValve.invoke<span class="o">(</span>StandardWrapperValve.java:220<span class="o">)</span>
|
|
|
at org.apache.catalina.core.StandardContextValve.invoke<span class="o">(</span>StandardContextValve.java:122<span class="o">)</span>
|
|
|
at com.taobao.tomcat.valves.ContextLoadFilterValve.invoke<span class="o">(</span>ContextLoadFilterValve.java:152<span class="o">)</span>
|
|
|
at org.apache.catalina.core.StandardHostValve.invoke<span class="o">(</span>StandardHostValve.java:170<span class="o">)</span>
|
|
|
at org.apache.catalina.valves.ErrorReportValve.invoke<span class="o">(</span>ErrorReportValve.java:103<span class="o">)</span>
|
|
|
at org.apache.catalina.core.StandardEngineValve.invoke<span class="o">(</span>StandardEngineValve.java:116<span class="o">)</span>
|
|
|
at org.apache.catalina.connector.CoyoteAdapter.service<span class="o">(</span>CoyoteAdapter.java:429<span class="o">)</span>
|
|
|
at org.apache.coyote.http11.AbstractHttp11Processor.process<span class="o">(</span>AbstractHttp11Processor.java:1085<span class="o">)</span>
|
|
|
at org.apache.coyote.AbstractProtocol<span class="nv">$AbstractConnectionHandler</span>.process<span class="o">(</span>AbstractProtocol.java:625<span class="o">)</span>
|
|
|
at org.apache.tomcat.util.net.NioEndpoint<span class="nv">$SocketProcessor</span>.doRun<span class="o">(</span>NioEndpoint.java:1760<span class="o">)</span>
|
|
|
at org.apache.tomcat.util.net.NioEndpoint<span class="nv">$SocketProcessor</span>.run<span class="o">(</span>NioEndpoint.java:1719<span class="o">)</span>
|
|
|
at java.util.concurrent.ThreadPoolExecutor.runWorker<span class="o">(</span>ThreadPoolExecutor.java:1142<span class="o">)</span>
|
|
|
at java.util.concurrent.ThreadPoolExecutor<span class="nv">$Worker</span>.run<span class="o">(</span>ThreadPoolExecutor.java:617<span class="o">)</span>
|
|
|
at org.apache.tomcat.util.threads.TaskThread<span class="nv">$WrappingRunnable</span>.run<span class="o">(</span>TaskThread.java:61<span class="o">)</span>
|
|
|
at java.lang.Thread.run<span class="o">(</span>Thread.java:745<span class="o">)</span>,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<blockquote>
|
|
|
<div>express中，表示异常信息的变量是<code class="docutils literal notranslate"><span class="pre">throwExp</span></code></div></blockquote>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id8"></span><h3>按照耗时进行过滤<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add <span class="s2">"{params,returnObj}"</span> <span class="c1">#cost>200 -x 3 </span>
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect<span class="o">(</span>class-cnt:1 , method-cnt:1<span class="o">)</span> cost in <span class="m">59</span> ms.
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@Object<span class="o">[][</span>
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@String<span class="o">[</span>a<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>b<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>c<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>d<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
@ArrayList<span class="o">[</span>
|
|
|
@String<span class="o">[</span>c<span class="o">]</span>,
|
|
|
|
|
|
@String<span class="o">[</span>d<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
<span class="o">]</span>,
|
|
|
|
|
|
@Integer<span class="o">[</span><span class="m">4</span><span class="o">]</span>,
|
|
|
<span class="o">]</span>
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<blockquote>
|
|
|
<div>#cost>200(单位是<code class="docutils literal notranslate"><span class="pre">ms</span></code>)表示只有当耗时大于200ms时才会输出，过滤掉执行时间小于200ms的调用</div></blockquote>
|
|
|
</div>
|
|
|
<div class="section" id="">
|
|
|
<span id="id9"></span><h3>观察当前对象中的全局属性<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
|
|
|
<p>如果想查看方法运行前后，当前对象中的全局属性，可以使用<code class="docutils literal notranslate"><span class="pre">target</span></code>关键字，代表当前对象</p>
|
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ watch com.taobao.container.web.arthas.rest.MyAppsController myFavoriteApps 'target'
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect(class-cnt:1 , method-cnt:1) cost in 128 ms.
|
|
|
ts=2017-10-31 18:45:55;result=@MyAppsController[
|
|
|
myFavAppsMapper=@$Proxy131[org.apache.ibatis.binding.MapperProxy@563e97f3],
|
|
|
getAppNameAndIdByEmpId=@$Proxy135[HardCodedTarget(type=GetAppNameAndIdByEmpId, url=http://hello.com)],
|
|
|
enableWebConsoleAppsMapper=@$Proxy132[org.apache.ibatis.binding.MapperProxy@7d51e4a8],
|
|
|
]
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
<p>然后使用<code class="docutils literal notranslate"><span class="pre">target.field_name</span></code>访问当前对象的某个全局属性</p>
|
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ watch com.taobao.container.web.arthas.rest.MyAppsController myFavoriteApps 'target.myFavAppsMapper'
|
|
|
Press Ctrl+C to abort.
|
|
|
Affect(class-cnt:1 , method-cnt:1) cost in 126 ms.
|
|
|
ts=2017-10-31 18:46:17;result=@$Proxy131[
|
|
|
m1=@Method[public boolean java.lang.Object.equals(java.lang.Object)],
|
|
|
m2=@Method[public java.lang.String java.lang.Object.toString()],
|
|
|
m5=@Method[public abstract java.util.List com.taobao.container.dal.arthas.mapper.MyFavAppsMapper.listFavApps(java.util.Map)],
|
|
|
m3=@Method[public abstract int com.taobao.container.dal.arthas.mapper.MyFavAppsMapper.delete(java.lang.String,java.lang.String,java.lang.String)],
|
|
|
m4=@Method[public abstract long com.taobao.container.dal.arthas.mapper.MyFavAppsMapper.insert(com.taobao.container.dal.arthas.domain.MyFavAppsDO)],
|
|
|
m0=@Method[public native int java.lang.Object.hashCode()],
|
|
|
]
|
|
|
</pre></div>
|
|
|
</div>
|
|
|
</div>
|
|
|
</div>
|
|
|
</div>
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
<footer>
|
|
|
|
|
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
|
|
|
|
|
<a href="trace.html" class="btn btn-neutral float-right" title="trace" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
|
|
|
|
|
|
|
|
|
<a href="monitor.html" class="btn btn-neutral" title="monitor" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
<hr/>
|
|
|
|
|
|
<div role="contentinfo">
|
|
|
<p>
|
|
|
© Copyright 2018, Alibaba Middleware Group, and contributors.
|
|
|
|
|
|
</p>
|
|
|
</div>
|
|
|
Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
|
|
|
|
|
|
</footer>
|
|
|
|
|
|
</div>
|
|
|
</div>
|
|
|
|
|
|
</section>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript">
|
|
|
var DOCUMENTATION_OPTIONS = {
|
|
|
URL_ROOT:'./',
|
|
|
VERSION:'3.0.6-SNAPSHOT',
|
|
|
LANGUAGE:'zh_CN',
|
|
|
COLLAPSE_INDEX:false,
|
|
|
FILE_SUFFIX:'.html',
|
|
|
HAS_SOURCE: true,
|
|
|
SOURCELINK_SUFFIX: '.txt'
|
|
|
};
|
|
|
</script>
|
|
|
<script type="text/javascript" src="_static/jquery.js"></script>
|
|
|
<script type="text/javascript" src="_static/underscore.js"></script>
|
|
|
<script type="text/javascript" src="_static/doctools.js"></script>
|
|
|
<script type="text/javascript" src="_static/translations.js"></script>
|
|
|
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
|
|
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript" src="_static/js/theme.js"></script>
|
|
|
|
|
|
<script type="text/javascript">
|
|
|
jQuery(function () {
|
|
|
SphinxRtdTheme.Navigation.enable(true);
|
|
|
});
|
|
|
</script>
|
|
|
<div class="github-fork-ribbon-wrapper right">
|
|
|
<div class="github-fork-ribbon">
|
|
|
<a href="https://github.com/alibaba/arthas">Fork me at GitHub</a>
|
|
|
</div>
|
|
|
</div>
|
|
|
|
|
|
<script type="text/javascript" src="_static/add_badges.js"></script>
|
|
|
|
|
|
<script>
|
|
|
var _hmt = _hmt || [];
|
|
|
(function() {
|
|
|
var hm = document.createElement("script");
|
|
|
hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
|
|
|
var s = document.getElementsByTagName("script")[0];
|
|
|
s.parentNode.insertBefore(hm, s);
|
|
|
})();
|
|
|
</script>
|
|
|
|
|
|
|
|
|
|
|
|
</body>
|
|
|
</html> |