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From mi...@apache.org
Subject [07/37] hbase-site git commit: Published site at 7063562bf1c0bfcc5efa791b8536a298edab8fcb.
Date Tue, 16 Feb 2016 17:29:10 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/6a178a98/xref/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html
----------------------------------------------------------------------
diff --git a/xref/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html b/xref/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html
index d21a5f4..b89bb84 100644
--- a/xref/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html
+++ b/xref/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html
@@ -45,192 +45,198 @@
 <a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
 <a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.http.HttpServer;
 <a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.JSONBean;
-<a class="jxr_linenumber" name="38" href="#38">38</a>  
-<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_comment">/*</em>
-<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_comment"> * This servlet is based off of the JMXProxyServlet from Tomcat 7.0.14. It has</em>
-<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_comment"> * been rewritten to be read only and to output in a JSON format so it is not</em>
-<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_comment"> * really that close to the original.</em>
-<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_comment"> */</em>
-<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * Provides Read only web access to JMX.</em>
-<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * This servlet generally will be placed under the /jmx URL for each</em>
-<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * HttpServer.  It provides read only</em>
-<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * access to JMX metrics.  The optional &lt;code&gt;qry&lt;/code&gt; parameter</em>
-<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> * may be used to query only a subset of the JMX Beans.  This query</em>
-<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * functionality is provided through the</em>
-<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * {@link MBeanServer#queryNames(ObjectName, javax.management.QueryExp)}</em>
-<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * method.</em>
-<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment"> * For example &lt;code&gt;<a href="http://.../jmx?qry=Hadoop:*&lt;/code&gt;" target="alexandria_uri">http://.../jmx?qry=Hadoop:*&lt;/code&gt;</a> will return</em>
-<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment"> * all hadoop metrics exposed through JMX.</em>
-<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment"> * The optional &lt;code&gt;get&lt;/code&gt; parameter is used to query an specific </em>
-<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment"> * attribute of a JMX bean.  The format of the URL is</em>
-<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment"> * &lt;code&gt;<a href="http://.../jmx?get=MXBeanName::AttributeName&lt;/code&gt;" target="alexandria_uri">http://.../jmx?get=MXBeanName::AttributeName&lt;/code&gt;</a></em>
-<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment"> * For example </em>
-<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment"> * &lt;code&gt;</em>
-<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment"> * <a href="http://../jmx?get=Hadoop:service=NameNode,name=NameNodeInfo::ClusterId" target="alexandria_uri">http://../jmx?get=Hadoop:service=NameNode,name=NameNodeInfo::ClusterId</a></em>
-<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment"> * &lt;/code&gt; will return the cluster id of the namenode mxbean.</em>
-<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment"> * If the &lt;code&gt;qry&lt;/code&gt; or the &lt;code&gt;get&lt;/code&gt; parameter is not formatted </em>
-<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment"> * correctly then a 400 BAD REQUEST http response code will be returned. </em>
-<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment"> * If a resouce such as a mbean or attribute can not be found, </em>
-<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment"> * a 404 SC_NOT_FOUND http response code will be returned. </em>
-<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="79" href="#79">79</a>  <em class="jxr_javadoccomment"> * The return format is JSON and in the form</em>
-<a class="jxr_linenumber" name="80" href="#80">80</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment"> *  &lt;pre&gt;&lt;code&gt;</em>
-<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment"> *  {</em>
-<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment"> *    "beans" : [</em>
-<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment"> *      {</em>
-<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment"> *        "name":"bean-name"</em>
-<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment"> *        ...</em>
-<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment"> *      }</em>
-<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment"> *    ]</em>
-<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment"> *  }</em>
-<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment"> *  &lt;/code&gt;&lt;/pre&gt;</em>
-<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment"> *  &lt;p&gt;</em>
-<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment"> *  The servlet attempts to convert the the JMXBeans into JSON. Each</em>
-<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment"> *  bean's attributes will be converted to a JSON object member.</em>
-<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment"> *  </em>
-<a class="jxr_linenumber" name="95" href="#95">95</a>  <em class="jxr_javadoccomment"> *  If the attribute is a boolean, a number, a string, or an array</em>
-<a class="jxr_linenumber" name="96" href="#96">96</a>  <em class="jxr_javadoccomment"> *  it will be converted to the JSON equivalent. </em>
-<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment"> *  </em>
-<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment"> *  If the value is a {@link CompositeData} then it will be converted</em>
-<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment"> *  to a JSON object with the keys as the name of the JSON member and</em>
-<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment"> *  the value is converted following these same rules.</em>
-<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment"> *  </em>
-<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment"> *  If the value is a {@link TabularData} then it will be converted</em>
-<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment"> *  to an array of the {@link CompositeData} elements that it contains.</em>
-<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment"> *  </em>
-<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment"> *  All other objects will be converted to a string and output as such.</em>
-<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment"> *  </em>
-<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment"> *  The bean's name and modelerType will be returned for all beans.</em>
-<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment"> *  Optional paramater "callback" should be used to deliver JSONP response.</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
-<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment"> *  </em>
-<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="113" href="#113">113</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html">JMXJsonServlet</a> <strong class="jxr_keyword">extends</strong> HttpServlet {
-<a class="jxr_linenumber" name="114" href="#114">114</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(JMXJsonServlet.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="115" href="#115">115</a> 
-<a class="jxr_linenumber" name="116" href="#116">116</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 1L;
-<a class="jxr_linenumber" name="117" href="#117">117</a> 
-<a class="jxr_linenumber" name="118" href="#118">118</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CALLBACK_PARAM = <span class="jxr_string">"callback"</span>;
-<a class="jxr_linenumber" name="119" href="#119">119</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment">   * If query string includes 'description', then we will emit bean and attribute descriptions to</em>
-<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">   * output IFF they are not null and IFF the description is not the same as the attribute name:</em>
-<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">   * i.e. specify an URL like so: /jmx?description=true</em>
-<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="124" href="#124">124</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String INCLUDE_DESCRIPTION = <span class="jxr_string">"description"</span>;
-<a class="jxr_linenumber" name="125" href="#125">125</a> 
-<a class="jxr_linenumber" name="126" href="#126">126</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment">   * MBean server.</em>
-<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="129" href="#129">129</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">transient</strong> MBeanServer mBeanServer;
-<a class="jxr_linenumber" name="130" href="#130">130</a> 
-<a class="jxr_linenumber" name="131" href="#131">131</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">transient</strong> <a href="../../../../../../org/apache/hadoop/hbase/util/JSONBean.html">JSONBean</a> jsonBeanWriter;
-<a class="jxr_linenumber" name="132" href="#132">132</a> 
-<a class="jxr_linenumber" name="133" href="#133">133</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment">   * Initialize this servlet.</em>
-<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="136" href="#136">136</a>   @Override
-<a class="jxr_linenumber" name="137" href="#137">137</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> init() <strong class="jxr_keyword">throws</strong> ServletException {
-<a class="jxr_linenumber" name="138" href="#138">138</a>     <em class="jxr_comment">// Retrieve the MBean server</em>
-<a class="jxr_linenumber" name="139" href="#139">139</a>     mBeanServer = ManagementFactory.getPlatformMBeanServer();
-<a class="jxr_linenumber" name="140" href="#140">140</a>     <strong class="jxr_keyword">this</strong>.jsonBeanWriter = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/util/JSONBean.html">JSONBean</a>();
-<a class="jxr_linenumber" name="141" href="#141">141</a>   }
-<a class="jxr_linenumber" name="142" href="#142">142</a> 
-<a class="jxr_linenumber" name="143" href="#143">143</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment">   * Process a GET request for the specified resource.</em>
-<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment">   * @param request</em>
-<a class="jxr_linenumber" name="147" href="#147">147</a> <em class="jxr_javadoccomment">   *          The servlet request we are processing</em>
-<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_javadoccomment">   * @param response</em>
-<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment">   *          The servlet response we are creating</em>
-<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="151" href="#151">151</a>   @Override
-<a class="jxr_linenumber" name="152" href="#152">152</a>   @edu.umd.cs.findbugs.annotations.SuppressWarnings(value=<span class="jxr_string">"XSS_REQUEST_PARAMETER_TO_SERVLET_WRITER"</span>,
-<a class="jxr_linenumber" name="153" href="#153">153</a>     justification=<span class="jxr_string">"TODO: See HBASE-15122"</span>)
-<a class="jxr_linenumber" name="154" href="#154">154</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> doGet(HttpServletRequest request, HttpServletResponse response) {
-<a class="jxr_linenumber" name="155" href="#155">155</a>     <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="156" href="#156">156</a>       <strong class="jxr_keyword">if</strong> (!HttpServer.isInstrumentationAccessAllowed(getServletContext(), request, response)) {
-<a class="jxr_linenumber" name="157" href="#157">157</a>         <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="158" href="#158">158</a>       }
-<a class="jxr_linenumber" name="159" href="#159">159</a>       String jsonpcb = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="160" href="#160">160</a>       PrintWriter writer = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="161" href="#161">161</a>       JSONBean.Writer beanWriter = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="162" href="#162">162</a>       <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="163" href="#163">163</a>         writer = response.getWriter();
-<a class="jxr_linenumber" name="164" href="#164">164</a>         beanWriter = <strong class="jxr_keyword">this</strong>.jsonBeanWriter.open(writer);
-<a class="jxr_linenumber" name="165" href="#165">165</a>  
-<a class="jxr_linenumber" name="166" href="#166">166</a>         <em class="jxr_comment">// "callback" parameter implies JSONP outpout</em>
-<a class="jxr_linenumber" name="167" href="#167">167</a>         jsonpcb = request.getParameter(CALLBACK_PARAM);
-<a class="jxr_linenumber" name="168" href="#168">168</a>         <strong class="jxr_keyword">if</strong> (jsonpcb != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="169" href="#169">169</a>           response.setContentType(<span class="jxr_string">"application/javascript; charset=utf8"</span>);
-<a class="jxr_linenumber" name="170" href="#170">170</a>           writer.write(jsonpcb + <span class="jxr_string">"("</span>);
-<a class="jxr_linenumber" name="171" href="#171">171</a>         } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="172" href="#172">172</a>           response.setContentType(<span class="jxr_string">"application/json; charset=utf8"</span>);
-<a class="jxr_linenumber" name="173" href="#173">173</a>         }
-<a class="jxr_linenumber" name="174" href="#174">174</a>         <em class="jxr_comment">// Should we output description on each attribute and bean?</em>
-<a class="jxr_linenumber" name="175" href="#175">175</a>         String tmpStr = request.getParameter(INCLUDE_DESCRIPTION);
-<a class="jxr_linenumber" name="176" href="#176">176</a>         <strong class="jxr_keyword">boolean</strong> description = tmpStr != <strong class="jxr_keyword">null</strong> &amp;&amp; tmpStr.length() &gt; 0;
-<a class="jxr_linenumber" name="177" href="#177">177</a> 
-<a class="jxr_linenumber" name="178" href="#178">178</a>         <em class="jxr_comment">// query per mbean attribute</em>
-<a class="jxr_linenumber" name="179" href="#179">179</a>         String getmethod = request.getParameter(<span class="jxr_string">"get"</span>);
-<a class="jxr_linenumber" name="180" href="#180">180</a>         <strong class="jxr_keyword">if</strong> (getmethod != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="181" href="#181">181</a>           String[] splitStrings = getmethod.split(<span class="jxr_string">"&#92;&#92;:&#92;&#92;:"</span>);
-<a class="jxr_linenumber" name="182" href="#182">182</a>           <strong class="jxr_keyword">if</strong> (splitStrings.length != 2) {
-<a class="jxr_linenumber" name="183" href="#183">183</a>             beanWriter.write(<span class="jxr_string">"result"</span>, <span class="jxr_string">"ERROR"</span>);
-<a class="jxr_linenumber" name="184" href="#184">184</a>             beanWriter.write(<span class="jxr_string">"message"</span>, <span class="jxr_string">"query format is not as expected."</span>);
-<a class="jxr_linenumber" name="185" href="#185">185</a>             beanWriter.flush();
-<a class="jxr_linenumber" name="186" href="#186">186</a>             response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
-<a class="jxr_linenumber" name="187" href="#187">187</a>             <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="188" href="#188">188</a>           }
-<a class="jxr_linenumber" name="189" href="#189">189</a>           <strong class="jxr_keyword">if</strong> (beanWriter.write(<strong class="jxr_keyword">this</strong>.mBeanServer, <strong class="jxr_keyword">new</strong> ObjectName(splitStrings[0]),
-<a class="jxr_linenumber" name="190" href="#190">190</a>               splitStrings[1], description) != 0) {
-<a class="jxr_linenumber" name="191" href="#191">191</a>             beanWriter.flush();
-<a class="jxr_linenumber" name="192" href="#192">192</a>             response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
-<a class="jxr_linenumber" name="193" href="#193">193</a>           }
-<a class="jxr_linenumber" name="194" href="#194">194</a>           <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="195" href="#195">195</a>         }
-<a class="jxr_linenumber" name="196" href="#196">196</a> 
-<a class="jxr_linenumber" name="197" href="#197">197</a>         <em class="jxr_comment">// query per mbean</em>
-<a class="jxr_linenumber" name="198" href="#198">198</a>         String qry = request.getParameter(<span class="jxr_string">"qry"</span>);
-<a class="jxr_linenumber" name="199" href="#199">199</a>         <strong class="jxr_keyword">if</strong> (qry == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="200" href="#200">200</a>           qry = <span class="jxr_string">"*:*"</span>;
-<a class="jxr_linenumber" name="201" href="#201">201</a>         }
-<a class="jxr_linenumber" name="202" href="#202">202</a>         <strong class="jxr_keyword">if</strong> (beanWriter.write(<strong class="jxr_keyword">this</strong>.mBeanServer, <strong class="jxr_keyword">new</strong> ObjectName(qry), <strong class="jxr_keyword">null</strong>, description) != 0) {
-<a class="jxr_linenumber" name="203" href="#203">203</a>           beanWriter.flush();
-<a class="jxr_linenumber" name="204" href="#204">204</a>           response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
-<a class="jxr_linenumber" name="205" href="#205">205</a>         }
-<a class="jxr_linenumber" name="206" href="#206">206</a>       } <strong class="jxr_keyword">finally</strong> {
-<a class="jxr_linenumber" name="207" href="#207">207</a>         <strong class="jxr_keyword">if</strong> (beanWriter != <strong class="jxr_keyword">null</strong>) beanWriter.close();
-<a class="jxr_linenumber" name="208" href="#208">208</a>         <strong class="jxr_keyword">if</strong> (jsonpcb != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="209" href="#209">209</a>            writer.write(<span class="jxr_string">");"</span>);
-<a class="jxr_linenumber" name="210" href="#210">210</a>         }
-<a class="jxr_linenumber" name="211" href="#211">211</a>         <strong class="jxr_keyword">if</strong> (writer != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="212" href="#212">212</a>           writer.close();
-<a class="jxr_linenumber" name="213" href="#213">213</a>         }
-<a class="jxr_linenumber" name="214" href="#214">214</a>       }
-<a class="jxr_linenumber" name="215" href="#215">215</a>     } <strong class="jxr_keyword">catch</strong> (IOException e) {
-<a class="jxr_linenumber" name="216" href="#216">216</a>       LOG.error(<span class="jxr_string">"Caught an exception while processing JMX request"</span>, e);
-<a class="jxr_linenumber" name="217" href="#217">217</a>       response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
-<a class="jxr_linenumber" name="218" href="#218">218</a>     } <strong class="jxr_keyword">catch</strong> (MalformedObjectNameException e) {
-<a class="jxr_linenumber" name="219" href="#219">219</a>       LOG.error(<span class="jxr_string">"Caught an exception while processing JMX request"</span>, e);
-<a class="jxr_linenumber" name="220" href="#220">220</a>       response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
-<a class="jxr_linenumber" name="221" href="#221">221</a>     }
-<a class="jxr_linenumber" name="222" href="#222">222</a>   }
-<a class="jxr_linenumber" name="223" href="#223">223</a> }
+<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> org.owasp.esapi.ESAPI;
+<a class="jxr_linenumber" name="39" href="#39">39</a>  
+<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_comment">/*</em>
+<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_comment"> * This servlet is based off of the JMXProxyServlet from Tomcat 7.0.14. It has</em>
+<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_comment"> * been rewritten to be read only and to output in a JSON format so it is not</em>
+<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_comment"> * really that close to the original.</em>
+<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_comment"> */</em>
+<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * Provides Read only web access to JMX.</em>
+<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * This servlet generally will be placed under the /jmx URL for each</em>
+<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * HttpServer.  It provides read only</em>
+<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> * access to JMX metrics.  The optional &lt;code&gt;qry&lt;/code&gt; parameter</em>
+<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * may be used to query only a subset of the JMX Beans.  This query</em>
+<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * functionality is provided through the</em>
+<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * {@link MBeanServer#queryNames(ObjectName, javax.management.QueryExp)}</em>
+<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> * method.</em>
+<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment"> * For example &lt;code&gt;<a href="http://.../jmx?qry=Hadoop:*&lt;/code&gt;" target="alexandria_uri">http://.../jmx?qry=Hadoop:*&lt;/code&gt;</a> will return</em>
+<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment"> * all hadoop metrics exposed through JMX.</em>
+<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment"> * The optional &lt;code&gt;get&lt;/code&gt; parameter is used to query an specific </em>
+<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment"> * attribute of a JMX bean.  The format of the URL is</em>
+<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment"> * &lt;code&gt;<a href="http://.../jmx?get=MXBeanName::AttributeName&lt;/code&gt;" target="alexandria_uri">http://.../jmx?get=MXBeanName::AttributeName&lt;/code&gt;</a></em>
+<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment"> * For example </em>
+<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment"> * &lt;code&gt;</em>
+<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment"> * <a href="http://../jmx?get=Hadoop:service=NameNode,name=NameNodeInfo::ClusterId" target="alexandria_uri">http://../jmx?get=Hadoop:service=NameNode,name=NameNodeInfo::ClusterId</a></em>
+<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment"> * &lt;/code&gt; will return the cluster id of the namenode mxbean.</em>
+<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment"> * If the &lt;code&gt;qry&lt;/code&gt; or the &lt;code&gt;get&lt;/code&gt; parameter is not formatted </em>
+<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment"> * correctly then a 400 BAD REQUEST http response code will be returned. </em>
+<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment"> * If a resouce such as a mbean or attribute can not be found, </em>
+<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment"> * a 404 SC_NOT_FOUND http response code will be returned. </em>
+<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="79" href="#79">79</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="80" href="#80">80</a>  <em class="jxr_javadoccomment"> * The return format is JSON and in the form</em>
+<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment"> *  &lt;pre&gt;&lt;code&gt;</em>
+<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment"> *  {</em>
+<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment"> *    "beans" : [</em>
+<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment"> *      {</em>
+<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment"> *        "name":"bean-name"</em>
+<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment"> *        ...</em>
+<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment"> *      }</em>
+<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment"> *    ]</em>
+<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment"> *  }</em>
+<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment"> *  &lt;/code&gt;&lt;/pre&gt;</em>
+<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment"> *  &lt;p&gt;</em>
+<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment"> *  The servlet attempts to convert the the JMXBeans into JSON. Each</em>
+<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment"> *  bean's attributes will be converted to a JSON object member.</em>
+<a class="jxr_linenumber" name="95" href="#95">95</a>  <em class="jxr_javadoccomment"> *  </em>
+<a class="jxr_linenumber" name="96" href="#96">96</a>  <em class="jxr_javadoccomment"> *  If the attribute is a boolean, a number, a string, or an array</em>
+<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment"> *  it will be converted to the JSON equivalent. </em>
+<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment"> *  </em>
+<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment"> *  If the value is a {@link CompositeData} then it will be converted</em>
+<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment"> *  to a JSON object with the keys as the name of the JSON member and</em>
+<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment"> *  the value is converted following these same rules.</em>
+<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment"> *  </em>
+<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment"> *  If the value is a {@link TabularData} then it will be converted</em>
+<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment"> *  to an array of the {@link CompositeData} elements that it contains.</em>
+<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment"> *  </em>
+<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment"> *  All other objects will be converted to a string and output as such.</em>
+<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment"> *  </em>
+<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment"> *  The bean's name and modelerType will be returned for all beans.</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment"> *  Optional paramater "callback" should be used to deliver JSONP response.</em>
+<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment"> *  </em>
+<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.html">JMXJsonServlet</a> <strong class="jxr_keyword">extends</strong> HttpServlet {
+<a class="jxr_linenumber" name="115" href="#115">115</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(JMXJsonServlet.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="116" href="#116">116</a> 
+<a class="jxr_linenumber" name="117" href="#117">117</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 1L;
+<a class="jxr_linenumber" name="118" href="#118">118</a> 
+<a class="jxr_linenumber" name="119" href="#119">119</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CALLBACK_PARAM = <span class="jxr_string">"callback"</span>;
+<a class="jxr_linenumber" name="120" href="#120">120</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">   * If query string includes 'description', then we will emit bean and attribute descriptions to</em>
+<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">   * output IFF they are not null and IFF the description is not the same as the attribute name:</em>
+<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment">   * i.e. specify an URL like so: /jmx?description=true</em>
+<a class="jxr_linenumber" name="124" href="#124">124</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="125" href="#125">125</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String INCLUDE_DESCRIPTION = <span class="jxr_string">"description"</span>;
+<a class="jxr_linenumber" name="126" href="#126">126</a> 
+<a class="jxr_linenumber" name="127" href="#127">127</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment">   * MBean server.</em>
+<a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="130" href="#130">130</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">transient</strong> MBeanServer mBeanServer;
+<a class="jxr_linenumber" name="131" href="#131">131</a> 
+<a class="jxr_linenumber" name="132" href="#132">132</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">transient</strong> <a href="../../../../../../org/apache/hadoop/hbase/util/JSONBean.html">JSONBean</a> jsonBeanWriter;
+<a class="jxr_linenumber" name="133" href="#133">133</a> 
+<a class="jxr_linenumber" name="134" href="#134">134</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment">   * Initialize this servlet.</em>
+<a class="jxr_linenumber" name="136" href="#136">136</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="137" href="#137">137</a>   @Override
+<a class="jxr_linenumber" name="138" href="#138">138</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> init() <strong class="jxr_keyword">throws</strong> ServletException {
+<a class="jxr_linenumber" name="139" href="#139">139</a>     <em class="jxr_comment">// Retrieve the MBean server</em>
+<a class="jxr_linenumber" name="140" href="#140">140</a>     mBeanServer = ManagementFactory.getPlatformMBeanServer();
+<a class="jxr_linenumber" name="141" href="#141">141</a>     <strong class="jxr_keyword">this</strong>.jsonBeanWriter = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/util/JSONBean.html">JSONBean</a>();
+<a class="jxr_linenumber" name="142" href="#142">142</a>   }
+<a class="jxr_linenumber" name="143" href="#143">143</a> 
+<a class="jxr_linenumber" name="144" href="#144">144</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">   * Process a GET request for the specified resource.</em>
+<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="147" href="#147">147</a> <em class="jxr_javadoccomment">   * @param request</em>
+<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_javadoccomment">   *          The servlet request we are processing</em>
+<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment">   * @param response</em>
+<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment">   *          The servlet response we are creating</em>
+<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="152" href="#152">152</a>   @Override
+<a class="jxr_linenumber" name="153" href="#153">153</a>   @edu.umd.cs.findbugs.annotations.SuppressWarnings(value=<span class="jxr_string">"XSS_REQUEST_PARAMETER_TO_SERVLET_WRITER"</span>,
+<a class="jxr_linenumber" name="154" href="#154">154</a>     justification=<span class="jxr_string">"TODO: See HBASE-15122"</span>)
+<a class="jxr_linenumber" name="155" href="#155">155</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> doGet(HttpServletRequest request, HttpServletResponse response) {
+<a class="jxr_linenumber" name="156" href="#156">156</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="157" href="#157">157</a>       <strong class="jxr_keyword">if</strong> (!HttpServer.isInstrumentationAccessAllowed(getServletContext(), request, response)) {
+<a class="jxr_linenumber" name="158" href="#158">158</a>         <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="159" href="#159">159</a>       }
+<a class="jxr_linenumber" name="160" href="#160">160</a>       String jsonpcb = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="161" href="#161">161</a>       PrintWriter writer = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="162" href="#162">162</a>       JSONBean.Writer beanWriter = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="163" href="#163">163</a>       <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="164" href="#164">164</a>         writer = response.getWriter();
+<a class="jxr_linenumber" name="165" href="#165">165</a>         beanWriter = <strong class="jxr_keyword">this</strong>.jsonBeanWriter.open(writer);
+<a class="jxr_linenumber" name="166" href="#166">166</a>  
+<a class="jxr_linenumber" name="167" href="#167">167</a>         <em class="jxr_comment">// "callback" parameter implies JSONP outpout</em>
+<a class="jxr_linenumber" name="168" href="#168">168</a>         jsonpcb = request.getParameter(CALLBACK_PARAM);
+<a class="jxr_linenumber" name="169" href="#169">169</a>         <strong class="jxr_keyword">if</strong> (jsonpcb != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="170" href="#170">170</a>           response.setContentType(<span class="jxr_string">"application/javascript; charset=utf8"</span>);
+<a class="jxr_linenumber" name="171" href="#171">171</a>           writer.write(encodeJS(jsonpcb) + <span class="jxr_string">"("</span>);
+<a class="jxr_linenumber" name="172" href="#172">172</a>         } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="173" href="#173">173</a>           response.setContentType(<span class="jxr_string">"application/json; charset=utf8"</span>);
+<a class="jxr_linenumber" name="174" href="#174">174</a>         }
+<a class="jxr_linenumber" name="175" href="#175">175</a>         <em class="jxr_comment">// Should we output description on each attribute and bean?</em>
+<a class="jxr_linenumber" name="176" href="#176">176</a>         String tmpStr = request.getParameter(INCLUDE_DESCRIPTION);
+<a class="jxr_linenumber" name="177" href="#177">177</a>         <strong class="jxr_keyword">boolean</strong> description = tmpStr != <strong class="jxr_keyword">null</strong> &amp;&amp; tmpStr.length() &gt; 0;
+<a class="jxr_linenumber" name="178" href="#178">178</a> 
+<a class="jxr_linenumber" name="179" href="#179">179</a>         <em class="jxr_comment">// query per mbean attribute</em>
+<a class="jxr_linenumber" name="180" href="#180">180</a>         String getmethod = request.getParameter(<span class="jxr_string">"get"</span>);
+<a class="jxr_linenumber" name="181" href="#181">181</a>         <strong class="jxr_keyword">if</strong> (getmethod != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="182" href="#182">182</a>           String[] splitStrings = getmethod.split(<span class="jxr_string">"&#92;&#92;:&#92;&#92;:"</span>);
+<a class="jxr_linenumber" name="183" href="#183">183</a>           <strong class="jxr_keyword">if</strong> (splitStrings.length != 2) {
+<a class="jxr_linenumber" name="184" href="#184">184</a>             beanWriter.write(<span class="jxr_string">"result"</span>, <span class="jxr_string">"ERROR"</span>);
+<a class="jxr_linenumber" name="185" href="#185">185</a>             beanWriter.write(<span class="jxr_string">"message"</span>, <span class="jxr_string">"query format is not as expected."</span>);
+<a class="jxr_linenumber" name="186" href="#186">186</a>             beanWriter.flush();
+<a class="jxr_linenumber" name="187" href="#187">187</a>             response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+<a class="jxr_linenumber" name="188" href="#188">188</a>             <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="189" href="#189">189</a>           }
+<a class="jxr_linenumber" name="190" href="#190">190</a>           <strong class="jxr_keyword">if</strong> (beanWriter.write(<strong class="jxr_keyword">this</strong>.mBeanServer, <strong class="jxr_keyword">new</strong> ObjectName(splitStrings[0]),
+<a class="jxr_linenumber" name="191" href="#191">191</a>               splitStrings[1], description) != 0) {
+<a class="jxr_linenumber" name="192" href="#192">192</a>             beanWriter.flush();
+<a class="jxr_linenumber" name="193" href="#193">193</a>             response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+<a class="jxr_linenumber" name="194" href="#194">194</a>           }
+<a class="jxr_linenumber" name="195" href="#195">195</a>           <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="196" href="#196">196</a>         }
+<a class="jxr_linenumber" name="197" href="#197">197</a> 
+<a class="jxr_linenumber" name="198" href="#198">198</a>         <em class="jxr_comment">// query per mbean</em>
+<a class="jxr_linenumber" name="199" href="#199">199</a>         String qry = request.getParameter(<span class="jxr_string">"qry"</span>);
+<a class="jxr_linenumber" name="200" href="#200">200</a>         <strong class="jxr_keyword">if</strong> (qry == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="201" href="#201">201</a>           qry = <span class="jxr_string">"*:*"</span>;
+<a class="jxr_linenumber" name="202" href="#202">202</a>         }
+<a class="jxr_linenumber" name="203" href="#203">203</a>         <strong class="jxr_keyword">if</strong> (beanWriter.write(<strong class="jxr_keyword">this</strong>.mBeanServer, <strong class="jxr_keyword">new</strong> ObjectName(qry), <strong class="jxr_keyword">null</strong>, description) != 0) {
+<a class="jxr_linenumber" name="204" href="#204">204</a>           beanWriter.flush();
+<a class="jxr_linenumber" name="205" href="#205">205</a>           response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+<a class="jxr_linenumber" name="206" href="#206">206</a>         }
+<a class="jxr_linenumber" name="207" href="#207">207</a>       } <strong class="jxr_keyword">finally</strong> {
+<a class="jxr_linenumber" name="208" href="#208">208</a>         <strong class="jxr_keyword">if</strong> (beanWriter != <strong class="jxr_keyword">null</strong>) beanWriter.close();
+<a class="jxr_linenumber" name="209" href="#209">209</a>         <strong class="jxr_keyword">if</strong> (jsonpcb != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="210" href="#210">210</a>            writer.write(<span class="jxr_string">");"</span>);
+<a class="jxr_linenumber" name="211" href="#211">211</a>         }
+<a class="jxr_linenumber" name="212" href="#212">212</a>         <strong class="jxr_keyword">if</strong> (writer != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="213" href="#213">213</a>           writer.close();
+<a class="jxr_linenumber" name="214" href="#214">214</a>         }
+<a class="jxr_linenumber" name="215" href="#215">215</a>       }
+<a class="jxr_linenumber" name="216" href="#216">216</a>     } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a class="jxr_linenumber" name="217" href="#217">217</a>       LOG.error(<span class="jxr_string">"Caught an exception while processing JMX request"</span>, e);
+<a class="jxr_linenumber" name="218" href="#218">218</a>       response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+<a class="jxr_linenumber" name="219" href="#219">219</a>     } <strong class="jxr_keyword">catch</strong> (MalformedObjectNameException e) {
+<a class="jxr_linenumber" name="220" href="#220">220</a>       LOG.error(<span class="jxr_string">"Caught an exception while processing JMX request"</span>, e);
+<a class="jxr_linenumber" name="221" href="#221">221</a>       response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+<a class="jxr_linenumber" name="222" href="#222">222</a>     }
+<a class="jxr_linenumber" name="223" href="#223">223</a>   }
+<a class="jxr_linenumber" name="224" href="#224">224</a> 
+<a class="jxr_linenumber" name="225" href="#225">225</a>   <strong class="jxr_keyword">private</strong> String encodeJS(String inputStr) {
+<a class="jxr_linenumber" name="226" href="#226">226</a>     <strong class="jxr_keyword">return</strong> ESAPI.encoder().encodeForJavaScript(inputStr);
+<a class="jxr_linenumber" name="227" href="#227">227</a>   }
+<a class="jxr_linenumber" name="228" href="#228">228</a> 
+<a class="jxr_linenumber" name="229" href="#229">229</a> }
 </pre>
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