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https://github.com/derickbailey/qedserver
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  5. <title>Monitor xref</title>
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  9. <div id="overview"><a href="../../../../../../javadoc/org/mortbay/jetty/plugin/util/Monitor.html">View Javadoc</a></div><pre>
  10. <a name="1" href="#1">1</a> <em class="jxr_comment">//========================================================================</em>
  11. <a name="2" href="#2">2</a> <em class="jxr_comment">//$Id: Monitor.java 4005 2008-11-06 22:31:53Z janb $</em>
  12. <a name="3" href="#3">3</a> <em class="jxr_comment">//Copyright 2008 Mort Bay Consulting Pty. Ltd.</em>
  13. <a name="4" href="#4">4</a> <em class="jxr_comment">//------------------------------------------------------------------------</em>
  14. <a name="5" href="#5">5</a> <em class="jxr_comment">//Licensed under the Apache License, Version 2.0 (the "License");</em>
  15. <a name="6" href="#6">6</a> <em class="jxr_comment">//you may not use this file except in compliance with the License.</em>
  16. <a name="7" href="#7">7</a> <em class="jxr_comment">//You may obtain a copy of the License at </em>
  17. <a name="8" href="#8">8</a> <em class="jxr_comment">//http://www.apache.org/licenses/LICENSE-2.0</em>
  18. <a name="9" href="#9">9</a> <em class="jxr_comment">//Unless required by applicable law or agreed to in writing, software</em>
  19. <a name="10" href="#10">10</a> <em class="jxr_comment">//distributed under the License is distributed on an "AS IS" BASIS,</em>
  20. <a name="11" href="#11">11</a> <em class="jxr_comment">//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
  21. <a name="12" href="#12">12</a> <em class="jxr_comment">//See the License for the specific language governing permissions and</em>
  22. <a name="13" href="#13">13</a> <em class="jxr_comment">//limitations under the License.</em>
  23. <a name="14" href="#14">14</a> <em class="jxr_comment">//========================================================================</em>
  24. <a name="15" href="#15">15</a>
  25. <a name="16" href="#16">16</a>
  26. <a name="17" href="#17">17</a> <strong class="jxr_keyword">package</strong> org.mortbay.jetty.plugin.util;
  27. <a name="18" href="#18">18</a>
  28. <a name="19" href="#19">19</a> <strong class="jxr_keyword">import</strong> java.io.IOException;
  29. <a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> java.io.InputStreamReader;
  30. <a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> java.io.LineNumberReader;
  31. <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.net.InetAddress;
  32. <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.net.ServerSocket;
  33. <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.net.Socket;
  34. <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.net.UnknownHostException;
  35. <a name="26" href="#26">26</a>
  36. <a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.mortbay.jetty.Server;
  37. <a name="28" href="#28">28</a>
  38. <a name="29" href="#29">29</a>
  39. <a name="30" href="#30">30</a>
  40. <a name="31" href="#31">31</a>
  41. <a name="32" href="#32">32</a> <em class="jxr_javadoccomment">/**</em>
  42. <a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * Monitor</em>
  43. <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> *</em>
  44. <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * Listens for stop commands eg via mvn jetty:stop and</em>
  45. <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * causes jetty to stop either by exiting the jvm, or</em>
  46. <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * by stopping the Server instances. The choice of</em>
  47. <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * behaviour is controlled by either passing true</em>
  48. <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * (exit jvm) or false (stop Servers) in the constructor.</em>
  49. <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * </em>
  50. <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> */</em>
  51. <a name="42" href="#42">42</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/mortbay/jetty/plugin/util/Monitor.html">Monitor</a> <strong class="jxr_keyword">extends</strong> Thread
  52. <a name="43" href="#43">43</a> {
  53. <a name="44" href="#44">44</a> <strong class="jxr_keyword">private</strong> String _key;
  54. <a name="45" href="#45">45</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/mortbay/jetty/Server.html">Server</a>[] _servers;
  55. <a name="46" href="#46">46</a>
  56. <a name="47" href="#47">47</a> ServerSocket _serverSocket;
  57. <a name="48" href="#48">48</a> <strong class="jxr_keyword">boolean</strong> _kill;
  58. <a name="49" href="#49">49</a>
  59. <a name="50" href="#50">50</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/mortbay/jetty/plugin/util/Monitor.html">Monitor</a>(<strong class="jxr_keyword">int</strong> port, String key, <a href="../../../../../org/mortbay/jetty/Server.html">Server</a>[] servers, <strong class="jxr_keyword">boolean</strong> kill)
  60. <a name="51" href="#51">51</a> <strong class="jxr_keyword">throws</strong> UnknownHostException, IOException
  61. <a name="52" href="#52">52</a> {
  62. <a name="53" href="#53">53</a> <strong class="jxr_keyword">if</strong> (port &lt;= 0)
  63. <a name="54" href="#54">54</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException (<span class="jxr_string">"Bad stop port"</span>);
  64. <a name="55" href="#55">55</a> <strong class="jxr_keyword">if</strong> (key==<strong class="jxr_keyword">null</strong>)
  65. <a name="56" href="#56">56</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Bad stop key"</span>);
  66. <a name="57" href="#57">57</a>
  67. <a name="58" href="#58">58</a> _key = key;
  68. <a name="59" href="#59">59</a> _servers = servers;
  69. <a name="60" href="#60">60</a> _kill = kill;
  70. <a name="61" href="#61">61</a> setDaemon(<strong class="jxr_keyword">true</strong>);
  71. <a name="62" href="#62">62</a> setName(<span class="jxr_string">"StopJettyPluginMonitor"</span>);
  72. <a name="63" href="#63">63</a> _serverSocket=<strong class="jxr_keyword">new</strong> ServerSocket(port,1,InetAddress.getByName(<span class="jxr_string">"127.0.0.1"</span>));
  73. <a name="64" href="#64">64</a> _serverSocket.setReuseAddress(<strong class="jxr_keyword">true</strong>);
  74. <a name="65" href="#65">65</a> }
  75. <a name="66" href="#66">66</a>
  76. <a name="67" href="#67">67</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> run()
  77. <a name="68" href="#68">68</a> {
  78. <a name="69" href="#69">69</a> <strong class="jxr_keyword">while</strong> (_serverSocket != <strong class="jxr_keyword">null</strong>)
  79. <a name="70" href="#70">70</a> {
  80. <a name="71" href="#71">71</a> Socket socket = <strong class="jxr_keyword">null</strong>;
  81. <a name="72" href="#72">72</a> <strong class="jxr_keyword">try</strong>
  82. <a name="73" href="#73">73</a> {
  83. <a name="74" href="#74">74</a> socket = _serverSocket.accept();
  84. <a name="75" href="#75">75</a> socket.setSoLinger(false, 0);
  85. <a name="76" href="#76">76</a> LineNumberReader lin = <strong class="jxr_keyword">new</strong> LineNumberReader(<strong class="jxr_keyword">new</strong> InputStreamReader(socket.getInputStream()));
  86. <a name="77" href="#77">77</a>
  87. <a name="78" href="#78">78</a> String key = lin.readLine();
  88. <a name="79" href="#79">79</a> <strong class="jxr_keyword">if</strong> (!_key.equals(key)) <strong class="jxr_keyword">continue</strong>;
  89. <a name="80" href="#80">80</a> String cmd = lin.readLine();
  90. <a name="81" href="#81">81</a> <strong class="jxr_keyword">if</strong> (<span class="jxr_string">"stop"</span>.equals(cmd))
  91. <a name="82" href="#82">82</a> {
  92. <a name="83" href="#83">83</a> <strong class="jxr_keyword">try</strong>{socket.close();}<strong class="jxr_keyword">catch</strong> (Exception e){PluginLog.getLog().debug(e);}
  93. <a name="84" href="#84">84</a> <strong class="jxr_keyword">try</strong>{socket.close();}<strong class="jxr_keyword">catch</strong> (Exception e){PluginLog.getLog().debug(e);}
  94. <a name="85" href="#85">85</a> <strong class="jxr_keyword">try</strong>{_serverSocket.close();}<strong class="jxr_keyword">catch</strong> (Exception e){PluginLog.getLog().debug(e);}
  95. <a name="86" href="#86">86</a>
  96. <a name="87" href="#87">87</a> _serverSocket = <strong class="jxr_keyword">null</strong>;
  97. <a name="88" href="#88">88</a>
  98. <a name="89" href="#89">89</a> <strong class="jxr_keyword">if</strong> (_kill)
  99. <a name="90" href="#90">90</a> {
  100. <a name="91" href="#91">91</a> PluginLog.getLog().info(<span class="jxr_string">"Killing Jetty"</span>);
  101. <a name="92" href="#92">92</a> System.exit(0);
  102. <a name="93" href="#93">93</a> }
  103. <a name="94" href="#94">94</a> <strong class="jxr_keyword">else</strong>
  104. <a name="95" href="#95">95</a> {
  105. <a name="96" href="#96">96</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i=0; _servers != <strong class="jxr_keyword">null</strong> &amp;&amp; i &lt; _servers.length; i++)
  106. <a name="97" href="#97">97</a> {
  107. <a name="98" href="#98">98</a> <strong class="jxr_keyword">try</strong>
  108. <a name="99" href="#99">99</a> {
  109. <a name="100" href="#100">100</a> PluginLog.getLog().info(<span class="jxr_string">"Stopping server "</span>+i);
  110. <a name="101" href="#101">101</a> _servers[i].stop();
  111. <a name="102" href="#102">102</a> }
  112. <a name="103" href="#103">103</a> <strong class="jxr_keyword">catch</strong> (Exception e)
  113. <a name="104" href="#104">104</a> {
  114. <a name="105" href="#105">105</a> PluginLog.getLog().error(e);
  115. <a name="106" href="#106">106</a> }
  116. <a name="107" href="#107">107</a> }
  117. <a name="108" href="#108">108</a> }
  118. <a name="109" href="#109">109</a> }
  119. <a name="110" href="#110">110</a> <strong class="jxr_keyword">else</strong>
  120. <a name="111" href="#111">111</a> PluginLog.getLog().info(<span class="jxr_string">"Unsupported monitor operation"</span>);
  121. <a name="112" href="#112">112</a> }
  122. <a name="113" href="#113">113</a> <strong class="jxr_keyword">catch</strong> (Exception e)
  123. <a name="114" href="#114">114</a> {
  124. <a name="115" href="#115">115</a> PluginLog.getLog().error(e);
  125. <a name="116" href="#116">116</a> }
  126. <a name="117" href="#117">117</a> <strong class="jxr_keyword">finally</strong>
  127. <a name="118" href="#118">118</a> {
  128. <a name="119" href="#119">119</a> <strong class="jxr_keyword">if</strong> (socket != <strong class="jxr_keyword">null</strong>)
  129. <a name="120" href="#120">120</a> {
  130. <a name="121" href="#121">121</a> <strong class="jxr_keyword">try</strong>
  131. <a name="122" href="#122">122</a> {
  132. <a name="123" href="#123">123</a> socket.close();
  133. <a name="124" href="#124">124</a> }
  134. <a name="125" href="#125">125</a> <strong class="jxr_keyword">catch</strong> (Exception e)
  135. <a name="126" href="#126">126</a> {
  136. <a name="127" href="#127">127</a> PluginLog.getLog().debug(e);
  137. <a name="128" href="#128">128</a> }
  138. <a name="129" href="#129">129</a> }
  139. <a name="130" href="#130">130</a> socket = <strong class="jxr_keyword">null</strong>;
  140. <a name="131" href="#131">131</a> }
  141. <a name="132" href="#132">132</a> }
  142. <a name="133" href="#133">133</a> }
  143. <a name="134" href="#134">134</a> }
  144. </pre>
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