📄 crawljobhandler.html
字号:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>CrawlJobHandler xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/archive/crawler/admin/CrawlJobHandler.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> CrawlJobHandler</em></em><a name="2" href="#2">2</a> <em class="comment"> *</em><a name="3" href="#3">3</a> <em class="comment"> * $Id: CrawlJobHandler.java,v 1.99 2006/06/13 01:19:40 stack-sf Exp $</em><a name="4" href="#4">4</a> <em class="comment"> *</em><a name="5" href="#5">5</a> <em class="comment"> * Copyright (C) 2003 Internet Archive.</em><a name="6" href="#6">6</a> <em class="comment"> *</em><a name="7" href="#7">7</a> <em class="comment"> * This file is part of the Heritrix web crawler (crawler.archive.org).</em><a name="8" href="#8">8</a> <em class="comment"> *</em><a name="9" href="#9">9</a> <em class="comment"> * Heritrix is free software; you can redistribute it and/or modify</em><a name="10" href="#10">10</a> <em class="comment"> * it under the terms of the GNU Lesser Public License as published by</em><a name="11" href="#11">11</a> <em class="comment"> * the Free Software Foundation; either version 2.1 of the License, or</em><a name="12" href="#12">12</a> <em class="comment"> * any later version.</em><a name="13" href="#13">13</a> <em class="comment"> *</em><a name="14" href="#14">14</a> <em class="comment"> * Heritrix is distributed in the hope that it will be useful,</em><a name="15" href="#15">15</a> <em class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</em><a name="16" href="#16">16</a> <em class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</em><a name="17" href="#17">17</a> <em class="comment"> * GNU Lesser Public License for more details.</em><a name="18" href="#18">18</a> <em class="comment"> *</em><a name="19" href="#19">19</a> <em class="comment"> * You should have received a copy of the GNU Lesser Public License</em><a name="20" href="#20">20</a> <em class="comment"> * along with Heritrix; if not, write to the Free Software</em><a name="21" href="#21">21</a> <em class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</em><a name="22" href="#22">22</a> <em class="comment"> */</em><a name="23" href="#23">23</a> <strong>package</strong> <a href="../../../../org/archive/crawler/admin/package-summary.html">org.archive.crawler.admin</a>;<a name="24" href="#24">24</a> <a name="25" href="#25">25</a> <strong>import</strong> java.io.BufferedReader;<a name="26" href="#26">26</a> <strong>import</strong> java.io.BufferedWriter;<a name="27" href="#27">27</a> <strong>import</strong> java.io.File;<a name="28" href="#28">28</a> <strong>import</strong> java.io.FileWriter;<a name="29" href="#29">29</a> <strong>import</strong> java.io.FilenameFilter;<a name="30" href="#30">30</a> <strong>import</strong> java.io.IOException;<a name="31" href="#31">31</a> <strong>import</strong> java.io.InputStream;<a name="32" href="#32">32</a> <strong>import</strong> java.io.InputStreamReader;<a name="33" href="#33">33</a> <strong>import</strong> java.net.URL;<a name="34" href="#34">34</a> <strong>import</strong> java.util.ArrayList;<a name="35" href="#35">35</a> <strong>import</strong> java.util.Comparator;<a name="36" href="#36">36</a> <strong>import</strong> java.util.Date;<a name="37" href="#37">37</a> <strong>import</strong> java.util.Enumeration;<a name="38" href="#38">38</a> <strong>import</strong> java.util.Iterator;<a name="39" href="#39">39</a> <strong>import</strong> java.util.List;<a name="40" href="#40">40</a> <strong>import</strong> java.util.TreeSet;<a name="41" href="#41">41</a> <strong>import</strong> java.util.logging.Level;<a name="42" href="#42">42</a> <strong>import</strong> java.util.logging.Logger;<a name="43" href="#43">43</a> <a name="44" href="#44">44</a> <strong>import</strong> javax.management.Attribute;<a name="45" href="#45">45</a> <strong>import</strong> javax.management.AttributeNotFoundException;<a name="46" href="#46">46</a> <strong>import</strong> javax.management.InvalidAttributeValueException;<a name="47" href="#47">47</a> <strong>import</strong> javax.management.MBeanException;<a name="48" href="#48">48</a> <strong>import</strong> javax.management.ReflectionException;<a name="49" href="#49">49</a> <a name="50" href="#50">50</a> <strong>import</strong> org.apache.commons.httpclient.URIException;<a name="51" href="#51">51</a> <strong>import</strong> org.archive.crawler.Heritrix;<a name="52" href="#52">52</a> <strong>import</strong> org.archive.crawler.datamodel.CrawlOrder;<a name="53" href="#53">53</a> <strong>import</strong> org.archive.crawler.event.CrawlStatusListener;<a name="54" href="#54">54</a> <strong>import</strong> org.archive.crawler.framework.FrontierMarker;<a name="55" href="#55">55</a> <strong>import</strong> org.archive.crawler.framework.exceptions.FatalConfigurationException;<a name="56" href="#56">56</a> <strong>import</strong> org.archive.crawler.framework.exceptions.InitializationException;<a name="57" href="#57">57</a> <strong>import</strong> org.archive.crawler.framework.exceptions.InvalidFrontierMarkerException;<a name="58" href="#58">58</a> <strong>import</strong> org.archive.crawler.frontier.FrontierJournal;<a name="59" href="#59">59</a> <strong>import</strong> org.archive.crawler.frontier.RecoveryJournal;<a name="60" href="#60">60</a> <strong>import</strong> org.archive.crawler.settings.ComplexType;<a name="61" href="#61">61</a> <strong>import</strong> org.archive.crawler.settings.CrawlerSettings;<a name="62" href="#62">62</a> <strong>import</strong> org.archive.crawler.settings.SettingsHandler;<a name="63" href="#63">63</a> <strong>import</strong> org.archive.crawler.settings.XMLSettingsHandler;<a name="64" href="#64">64</a> <strong>import</strong> org.archive.util.ArchiveUtils;<a name="65" href="#65">65</a> <strong>import</strong> org.archive.util.FileUtils;<a name="66" href="#66">66</a> <a name="67" href="#67">67</a> <a name="68" href="#68">68</a> <em>/**<em>*</em></em><a name="69" href="#69">69</a> <em> * This class manages CrawlJobs. Submitted crawl jobs are queued up and run</em><a name="70" href="#70">70</a> <em> * in order when the crawler is running.</em><a name="71" href="#71">71</a> <em> * <p>Basically this provides a layer between any potential user interface and</em><a name="72" href="#72">72</a> <em> * the CrawlJobs. It keeps the lists of completed jobs, pending jobs, etc.</em><a name="73" href="#73">73</a> <em> * <p></em><a name="74" href="#74">74</a> <em> * The jobs managed by the handler can be divided into the following:</em><a name="75" href="#75">75</a> <em> * <ul></em><a name="76" href="#76">76</a> <em> * <li> <code>Pending</code> - Jobs that are ready to run and are waiting their</em><a name="77" href="#77">77</a> <em> * turn. These can be edited, viewed, deleted etc.</em><a name="78" href="#78">78</a> <em> * <li> <code>Running</code> - Only one job can be running at a time. There may</em><a name="79" href="#79">79</a> <em> * be no job running. The running job can be viewed</em><a name="80" href="#80">80</a> <em> * and edited to some extent. It can also be</em><a name="81" href="#81">81</a> <em> * terminated. This job should have a</em><a name="82" href="#82">82</a> <em> * StatisticsTracking module attached to it for more</em><a name="83" href="#83">83</a> <em> * details on the crawl.</em><a name="84" href="#84">84</a> <em> * <li><code>Completed</code> - Jobs that have finished crawling or have been</em><a name="85" href="#85">85</a> <em> * deleted from the pending queue or terminated</em><a name="86" href="#86">86</a> <em> * while running. They can not be edited but can be</em><a name="87" href="#87">87</a> <em> * viewed. They retain the StatisticsTracking</em><a name="88" href="#88">88</a> <em> * module from their run.</em><a name="89" href="#89">89</a> <em> * <li> <code>New job</code> - At any given time their can be one 'new job' the</em><a name="90" href="#90">90</a> <em> * new job is not considered ready to run. It can</em><a name="91" href="#91">91</a> <em> * be edited or discarded (in which case it will be</em><a name="92" href="#92">92</a> <em> * totally destroyed, including any files on disk).</em><a name="93" href="#93">93</a> <em> * Once an operator deems the job ready to run it</em><a name="94" href="#94">94</a> <em> * can be moved to the pending queue.</em><a name="95" href="#95">95</a> <em> * <li> <code>Profiles</code> - Jobs under profiles are not actual jobs. They can</em><a name="96" href="#96">96</a> <em> * be edited normally but can not be submitted to</em><a name="97" href="#97">97</a> <em> * the pending queue. New jobs can be created</em><a name="98" href="#98">98</a> <em> * using a profile as it's template.</em><a name="99" href="#99">99</a> <em> *</em><a name="100" href="#100">100</a> <em> * @author Kristinn Sigurdsson</em><a name="101" href="#101">101</a> <em> *</em><a name="102" href="#102">102</a> <em> * @see org.archive.crawler.admin.CrawlJob</em><a name="103" href="#103">103</a> <em> */</em><a name="104" href="#104">104</a> <a name="105" href="#105">105</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/archive/crawler/admin/CrawlJobHandler.html">CrawlJobHandler</a> implements <a href="../../../../org/archive/crawler/event/CrawlStatusListener.html">CrawlStatusListener</a> {<a name="106" href="#106">106</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> Logger logger =<a name="107" href="#107">107</a> Logger.getLogger(CrawlJobHandler.<strong>class</strong>.getName());<a name="108" href="#108">108</a> <a name="109" href="#109">109</a> <em>/**<em>*</em></em><a name="110" href="#110">110</a> <em> * Name of system property whose specification overrides default profile</em><a name="111" href="#111">111</a> <em> * used.</em><a name="112" href="#112">112</a> <em> *</em><a name="113" href="#113">113</a> <em> */</em><a name="114" href="#114">114</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_PROFILE_NAME<a name="115" href="#115">115</a> = <span class="string">"heritrix.default.profile"</span>;<a name="116" href="#116">116</a> <a name="117" href="#117">117</a> <em>/**<em>*</em></em><a name="118" href="#118">118</a> <em> * Default profile name.</em><a name="119" href="#119">119</a> <em> */</em><a name="120" href="#120">120</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_PROFILE = <span class="string">"default"</span>;<a name="121" href="#121">121</a> <a name="122" href="#122">122</a> <em>/**<em>*</em></em><a name="123" href="#123">123</a> <em> * Name of the profiles directory.</em><a name="124" href="#124">124</a> <em> */</em><a name="125" href="#125">125</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String PROFILES_DIR_NAME = <span class="string">"profiles"</span>;<a name="126" href="#126">126</a> <a name="127" href="#127">127</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ORDER_FILE_NAME = <span class="string">"order.xml"</span>;<a name="128" href="#128">128</a> <a name="129" href="#129">129</a> <em>/**<em>*</em></em><a name="130" href="#130">130</a> <em> * Job currently being crawled.</em><a name="131" href="#131">131</a> <em> */</em><a name="132" href="#132">132</a> <strong>private</strong> <a href="../../../../org/archive/crawler/admin/CrawlJob.html">CrawlJob</a> currentJob = <strong>null</strong>;<a name="133" href="#133">133</a> <a name="134" href="#134">134</a> <em>/**<em>*</em></em><a name="135" href="#135">135</a> <em> * A new job that is being created/configured. Not yet ready for crawling.</em><a name="136" href="#136">136</a> <em> */</em><a name="137" href="#137">137</a> <strong>private</strong> <a href="../../../../org/archive/crawler/admin/CrawlJob.html">CrawlJob</a> newJob = <strong>null</strong>;<a name="138" href="#138">138</a> <a name="139" href="#139">139</a> <em>/**<em>*</em></em><a name="140" href="#140">140</a> <em> * Thread to start the next job in background</em><a name="141" href="#141">141</a> <em> */</em> ⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -