?? kw3writerprocessor.html
字號:
<!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>Kw3WriterProcessor xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/archive/crawler/writer/Kw3WriterProcessor.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> Created on 2006-okt-03</em></em><a name="2" href="#2">2</a> <em class="comment">*</em><a name="3" href="#3">3</a> <em class="comment">* Copyright (C) 2006 National Library of Sweden.</em><a name="4" href="#4">4</a> <em class="comment">*</em><a name="5" href="#5">5</a> <em class="comment">* This program is free software; you can redistribute it and/or</em><a name="6" href="#6">6</a> <em class="comment">* modify it under the terms of the GNU Lesser General Public License</em><a name="7" href="#7">7</a> <em class="comment">* as published by the Free Software Foundation; either version 2</em><a name="8" href="#8">8</a> <em class="comment">* of the License, or (at your option) any later version.</em><a name="9" href="#9">9</a> <em class="comment">*</em><a name="10" href="#10">10</a> <em class="comment">* This program is distributed in the hope that it will be useful,</em><a name="11" href="#11">11</a> <em class="comment">* but WITHOUT ANY WARRANTY; without even the implied warranty of</em><a name="12" href="#12">12</a> <em class="comment">* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</em><a name="13" href="#13">13</a> <em class="comment">* GNU Lesser General Public License for more details.</em><a name="14" href="#14">14</a> <em class="comment">*</em><a name="15" href="#15">15</a> <em class="comment">* You should have received a copy of the GNU Lesser General Public License</em><a name="16" href="#16">16</a> <em class="comment">* along with this program; if not, write to the Free Software</em><a name="17" href="#17">17</a> <em class="comment">* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</em><a name="18" href="#18">18</a> <em class="comment">*/</em><a name="19" href="#19">19</a> <a name="20" href="#20">20</a> <strong>package</strong> <a href="../../../../org/archive/crawler/writer/package-summary.html">org.archive.crawler.writer</a>;<a name="21" href="#21">21</a> <a name="22" href="#22">22</a> <strong>import</strong> it.unimi.dsi.fastutil.io.FastBufferedOutputStream;<a name="23" href="#23">23</a> <a name="24" href="#24">24</a> <strong>import</strong> java.io.ByteArrayOutputStream;<a name="25" href="#25">25</a> <strong>import</strong> java.io.File;<a name="26" href="#26">26</a> <strong>import</strong> java.io.FileOutputStream;<a name="27" href="#27">27</a> <strong>import</strong> java.io.IOException;<a name="28" href="#28">28</a> <strong>import</strong> java.io.OutputStream;<a name="29" href="#29">29</a> <strong>import</strong> java.net.InetAddress;<a name="30" href="#30">30</a> <strong>import</strong> java.security.MessageDigest;<a name="31" href="#31">31</a> <strong>import</strong> java.security.NoSuchAlgorithmException;<a name="32" href="#32">32</a> <strong>import</strong> java.util.logging.Level;<a name="33" href="#33">33</a> <strong>import</strong> java.util.logging.Logger;<a name="34" href="#34">34</a> <a name="35" href="#35">35</a> <strong>import</strong> javax.management.AttributeNotFoundException;<a name="36" href="#36">36</a> <strong>import</strong> javax.management.MBeanException;<a name="37" href="#37">37</a> <strong>import</strong> javax.management.ReflectionException;<a name="38" href="#38">38</a> <a name="39" href="#39">39</a> <strong>import</strong> org.archive.crawler.datamodel.CoreAttributeConstants;<a name="40" href="#40">40</a> <strong>import</strong> org.archive.crawler.datamodel.CrawlHost;<a name="41" href="#41">41</a> <strong>import</strong> org.archive.crawler.datamodel.CrawlURI;<a name="42" href="#42">42</a> <strong>import</strong> org.archive.crawler.framework.Processor;<a name="43" href="#43">43</a> <strong>import</strong> org.archive.crawler.settings.SimpleType;<a name="44" href="#44">44</a> <strong>import</strong> org.archive.crawler.settings.Type;<a name="45" href="#45">45</a> <strong>import</strong> org.archive.io.ReplayInputStream;<a name="46" href="#46">46</a> <strong>import</strong> org.archive.crawler.writer.Kw3Constants;<a name="47" href="#47">47</a> <a name="48" href="#48">48</a> <em>/**<em>*</em></em><a name="49" href="#49">49</a> <em> * Processor module that writes the results of successful fetches to</em><a name="50" href="#50">50</a> <em> * files on disk. These files are MIME-files of the type used by the</em><a name="51" href="#51">51</a> <em> * Swedish National Library's Kulturarw3 web harvesting [<a href="http://www.kb.se/kw3/" target="alexandria_uri">http://www.kb.se/kw3/</a>].</em><a name="52" href="#52">52</a> <em> * </em><a name="53" href="#53">53</a> <em> * Each URI gets written to its own file and has a path consisting of:</em><a name="54" href="#54">54</a> <em> * <ul></em><a name="55" href="#55">55</a> <em> * <li> A dir named with the first two chars of the website's md5. </li></em><a name="56" href="#56">56</a> <em> * <li> A dir named after the website. </li></em><a name="57" href="#57">57</a> <em> * <li> 'current' - a dir indicating that this is the directory being written</em><a name="58" href="#58">58</a> <em> * to by the ongoing crawl. </li></em><a name="59" href="#59">59</a> <em> * <li> A file on the format <md5 of url>.<fetchtime in seconds> </li></em><a name="60" href="#60">60</a> <em> * </ul></em><a name="61" href="#61">61</a> <em> * Example: '/53/www.kb.se/current/6879ad79c0ccf886ee8ca55d80e5d6a1.1169211837'</em><a name="62" href="#62">62</a> <em> * </em><a name="63" href="#63">63</a> <em> * The MIME-file itself consists of three parts:</em><a name="64" href="#64">64</a> <em> * <ul></em><a name="65" href="#65">65</a> <em> * <li> 1. ArchiveInfo - Metadata about the file and its content. </li></em><a name="66" href="#66">66</a> <em> * <li> 2. Header - The HTTP response header. </li></em><a name="67" href="#67">67</a> <em> * <li> 3. Content - The HTTP response content, plus content-type. </li></em><a name="68" href="#68">68</a> <em> * </ul></em><a name="69" href="#69">69</a> <em> * </em><a name="70" href="#70">70</a> <em> * @author oskar</em><a name="71" href="#71">71</a> <em> */</em><a name="72" href="#72">72</a> <strong>public</strong> <strong>class</strong> Kw3WriterProcessor <strong>extends</strong> <a href="../../../../org/archive/crawler/framework/Processor.html">Processor</a> implements<a name="73" href="#73">73</a> CoreAttributeConstants, Kw3Constants {<a name="74" href="#74">74</a> <a name="75" href="#75">75</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>long</strong> serialVersionUID = 7171448068924684594L;<a name="76" href="#76">76</a> <a name="77" href="#77">77</a> <strong>private</strong> <strong>static</strong> String COLON = <span class="string">":"</span>;<a name="78" href="#78">78</a> <strong>private</strong> <strong>static</strong> String WS = <span class="string">" "</span>;<a name="79" href="#79">79</a> <strong>private</strong> <strong>static</strong> String LF = <span class="string">"\n"</span>;<a name="80" href="#80">80</a> <a name="81" href="#81">81</a> <em>/**<em>*</em></em><a name="82" href="#82">82</a> <em> * Logger.</em><a name="83" href="#83">83</a> <em> */</em><a name="84" href="#84">84</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> Logger logger =<a name="85" href="#85">85</a> Logger.getLogger(Kw3WriterProcessor.<strong>class</strong>.getName());<a name="86" href="#86">86</a> <a name="87" href="#87">87</a> <em>/**<em>*</em></em><a name="88" href="#88">88</a> <em> * Key to use asking settings for arc path value.</em><a name="89" href="#89">89</a> <em> */</em><a name="90" href="#90">90</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_PATH =<span class="string">"path"</span>;<a name="91" href="#91">91</a> <a name="92" href="#92">92</a> <em>/**<em>*</em></em><a name="93" href="#93">93</a> <em> * Default path.</em><a name="94" href="#94">94</a> <em> */</em><a name="95" href="#95">95</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_PATH = <span class="string">"arcs"</span>;<a name="96" href="#96">96</a> <a name="97" href="#97">97</a> <em>/**<em>*</em></em><a name="98" href="#98">98</a> <em> * Key to use asking settings for max size value.</em><a name="99" href="#99">99</a> <em> */</em><a name="100" href="#100">100</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_MAX_SIZE_BYTES = <span class="string">"max-size-bytes"</span>;<a name="101" href="#101">101</a> <a name="102" href="#102">102</a> <em>/**<em>*</em></em><a name="103" href="#103">103</a> <em> * Default max file size.</em><a name="104" href="#104">104</a> <em> */</em><a name="105" href="#105">105</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> <strong>int</strong> DEFAULT_MAX_FILE_SIZE = 10000000;<a name="106" href="#106">106</a> <a name="107" href="#107">107</a> <em>/**<em>*</em></em><a name="108" href="#108">108</a> <em> * Key to use asking settings if chmod should be execuated .</em><a name="109" href="#109">109</a> <em> */</em><a name="110" href="#110">110</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_CHMOD = <span class="string">"chmod"</span>;<a name="111" href="#111">111</a> <a name="112" href="#112">112</a> <em>/**<em>*</em></em><a name="113" href="#113">113</a> <em> * Key to use asking settings for the new chmod value.</em><a name="114" href="#114">114</a> <em> */</em><a name="115" href="#115">115</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_CHMOD_VALUE = <span class="string">"chmod-value"</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 value for permissions.</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_CHMOD_VALUE = <span class="string">"777"</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> * Key for the maximum ARC bytes to write attribute.</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 ATTR_MAX_BYTES_WRITTEN = <span class="string">"total-bytes-to-write"</span>;<a name="126" href="#126">126</a> <a name="127" href="#127">127</a> <em>/**<em>*</em></em><a name="128" href="#128">128</a> <em> * Key for the collection attribute.</em><a name="129" href="#129">129</a> <em> */</em><a name="130" href="#130">130</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_COLLECTION = <span class="string">"collection"</span>;<a name="131" href="#131">131</a> <a name="132" href="#132">132</a> <em>/**<em>*</em></em><a name="133" href="#133">133</a> <em> * Default value for collection.</em><a name="134" href="#134">134</a> <em> */</em><a name="135" href="#135">135</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_COLLECTION_VALUE = <span class="string">"kw3"</span>;<a name="136" href="#136">136</a> <a name="137" href="#137">137</a> <em>/**<em>*</em></em><a name="138" href="#138">138</a> <em> * Key for the harvester attribute.</em><a name="139" href="#139">139</a> <em> */</em><a name="140" href="#140">140</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_HARVESTER = <span class="string">"harvester"</span>;<a name="141" href="#141">141</a> <a name="142" href="#142">142</a> <em>/**<em>*</em></em><a name="143" href="#143">143</a> <em> * Default value for harvester.</em><a name="144" href="#144">144</a> <em> */</em><a name="145" href="#145">145</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_HARVESTER_VALUE = <span class="string">"heritrix"</span>;<a name="146" href="#146">146</a> <a name="147" href="#147">147</a> <strong>private</strong> <strong>static</strong> String BOUNDARY_START = <span class="string">"KulturArw3_"</span>;<a name="148" href="#148">148</a> <a name="149" href="#149">149</a> <em class="comment">/*</em><a name="150" href="#150">150</a> <em class="comment"> * Private members for settings</em><a name="151" href="#151">151</a> <em class="comment"> */</em>?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -