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<!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=ISO-8859-1" /><title>Handler xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> $Id: Handler.java 4902 2007-02-16 00:07:40Z stack-sf $</em></em><a name="2" href="#2">2</a> <em class="comment"> *</em><a name="3" href="#3">3</a> <em class="comment"> * Created October 28th, 2006</em><a name="4" href="#4">4</a> <em class="comment"> *</em><a name="5" href="#5">5</a> <em class="comment"> * Copyright (C) 2006 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/net/s3/package-summary.html">org.archive.net.s3</a>;<a name="24" href="#24">24</a> <a name="25" href="#25">25</a> <strong>import</strong> java.io.IOException;<a name="26" href="#26">26</a> <strong>import</strong> java.io.InputStream;<a name="27" href="#27">27</a> <strong>import</strong> java.io.PrintStream;<a name="28" href="#28">28</a> <strong>import</strong> java.net.HttpURLConnection;<a name="29" href="#29">29</a> <strong>import</strong> java.net.URL;<a name="30" href="#30">30</a> <strong>import</strong> java.net.URLConnection;<a name="31" href="#31">31</a> <strong>import</strong> java.net.URLStreamHandler;<a name="32" href="#32">32</a> <strong>import</strong> java.text.SimpleDateFormat;<a name="33" href="#33">33</a> <strong>import</strong> java.util.Date;<a name="34" href="#34">34</a> <strong>import</strong> java.util.Locale;<a name="35" href="#35">35</a> <strong>import</strong> java.util.TimeZone;<a name="36" href="#36">36</a> <a name="37" href="#37">37</a> <strong>import</strong> org.jets3t.service.S3ServiceException;<a name="38" href="#38">38</a> <strong>import</strong> org.jets3t.service.impl.<strong>rest</strong>.httpclient.RestS3Service;<a name="39" href="#39">39</a> <strong>import</strong> org.jets3t.service.model.S3Bucket;<a name="40" href="#40">40</a> <strong>import</strong> org.jets3t.service.model.S3Object;<a name="41" href="#41">41</a> <strong>import</strong> org.jets3t.service.security.AWSCredentials;<a name="42" href="#42">42</a> <a name="43" href="#43">43</a> <em>/**<em>*</em></em><a name="44" href="#44">44</a> <em> * A protocol handler for an s3 scheme. Takes URLs of the form:</em><a name="45" href="#45">45</a> <em> * <code>s3://aws.access.key.id:aws.access.key.secret@BUCKET/PATH</code> (Same</em><a name="46" href="#46">46</a> <em> * as in hadoop).</em><a name="47" href="#47">47</a> <em> * </em><a name="48" href="#48">48</a> <em> * @author stack</em><a name="49" href="#49">49</a> <em> */</em><a name="50" href="#50">50</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/archive/net/s3/Handler.html">Handler</a> <strong>extends</strong> URLStreamHandler {<a name="51" href="#51">51</a> <strong>protected</strong> URLConnection openConnection(URL u)<a name="52" href="#52">52</a> throws IOException {<a name="53" href="#53">53</a> <em class="comment">// This looking for accessKey id and accessKey secret code is based</em><a name="54" href="#54">54</a> <em class="comment">// on code from hadoop S3.</em><a name="55" href="#55">55</a> String accessKey = <strong>null</strong>;<a name="56" href="#56">56</a> String secretAccessKey = <strong>null</strong>;<a name="57" href="#57">57</a> String userInfo = u.getUserInfo();<a name="58" href="#58">58</a> <strong>if</strong> (userInfo != <strong>null</strong>) {<a name="59" href="#59">59</a> <strong>int</strong> index = userInfo.indexOf(':');<a name="60" href="#60">60</a> <strong>if</strong> (index != -1) {<a name="61" href="#61">61</a> accessKey = userInfo.substring(0, index);<a name="62" href="#62">62</a> secretAccessKey = userInfo.substring(index + 1);<a name="63" href="#63">63</a> } <strong>else</strong> {<a name="64" href="#64">64</a> accessKey = userInfo;<a name="65" href="#65">65</a> }<a name="66" href="#66">66</a> }<a name="67" href="#67">67</a> <strong>if</strong> (accessKey == <strong>null</strong>) {<a name="68" href="#68">68</a> accessKey = System.getProperty(<span class="string">"aws.access.key.id"</span>);<a name="69" href="#69">69</a> }<a name="70" href="#70">70</a> <strong>if</strong> (secretAccessKey == <strong>null</strong>) {<a name="71" href="#71">71</a> secretAccessKey = System.getProperty(<span class="string">"aws.access.key.secret"</span>);<a name="72" href="#72">72</a> }<a name="73" href="#73">73</a> <strong>if</strong> (accessKey == <strong>null</strong> && secretAccessKey == <strong>null</strong>) {<a name="74" href="#74">74</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"AWS "</span> +<a name="75" href="#75">75</a> <span class="string">"Access Key ID and Secret Access Key "</span> +<a name="76" href="#76">76</a> <span class="string">"must be specified as the username "</span> +<a name="77" href="#77">77</a> <span class="string">"or password (respectively) of a s3 URL, "</span> +<a name="78" href="#78">78</a> <span class="string">"or by setting the "</span> +<a name="79" href="#79">79</a> <span class="string">"aws.access.key.id or "</span> + <a name="80" href="#80">80</a> <span class="string">"aws.access.key.secret properties (respectively)."</span>);<a name="81" href="#81">81</a> } <strong>else</strong> <strong>if</strong> (accessKey == <strong>null</strong>) {<a name="82" href="#82">82</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"AWS "</span> +<a name="83" href="#83">83</a> <span class="string">"Access Key ID must be specified "</span> +<a name="84" href="#84">84</a> <span class="string">"as the username of a s3 URL, or by setting the "</span> +<a name="85" href="#85">85</a> <span class="string">"aws.access.key.id property."</span>);<a name="86" href="#86">86</a> } <strong>else</strong> <strong>if</strong> (secretAccessKey == <strong>null</strong>) {<a name="87" href="#87">87</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"AWS "</span> +<a name="88" href="#88">88</a> <span class="string">"Secret Access Key must be specified "</span> +<a name="89" href="#89">89</a> <span class="string">"as the password of a s3 URL, or by setting the "</span> +<a name="90" href="#90">90</a> <span class="string">"aws.access.key.secret property."</span>); <a name="91" href="#91">91</a> }<a name="92" href="#92">92</a> <a name="93" href="#93">93</a> RestS3Service s3Service;<a name="94" href="#94">94</a> <strong>try</strong> {<a name="95" href="#95">95</a> s3Service = <strong>new</strong> RestS3Service(<a name="96" href="#96">96</a> <strong>new</strong> AWSCredentials(accessKey, secretAccessKey));<a name="97" href="#97">97</a> } <strong>catch</strong> (S3ServiceException e) {<a name="98" href="#98">98</a> e.printStackTrace();<a name="99" href="#99">99</a> <strong>throw</strong> <strong>new</strong> IOException(e.toString());<a name="100" href="#100">100</a> }<a name="101" href="#101">101</a> InputStream is = <strong>null</strong>;<a name="102" href="#102">102</a> <strong>try</strong> {<a name="103" href="#103">103</a> <em class="comment">// This opens the stream to the bucket/key object.</em><a name="104" href="#104">104</a> S3Object s3obj = s3Service.getObject(<strong>new</strong> S3Bucket(u.getHost()),<a name="105" href="#105">105</a> u.getPath().substring(1) <em class="comment">/*<em class="comment"> Skip starting '/' character */</em>);</em><a name="106" href="#106">106</a> is = s3obj.getDataInputStream();<a name="107" href="#107">107</a> } <strong>catch</strong> (S3ServiceException e) {<a name="108" href="#108">108</a> e.printStackTrace();<a name="109" href="#109">109</a> <strong>throw</strong> <strong>new</strong> IOException(e.toString());<a name="110" href="#110">110</a> }<a name="111" href="#111">111</a> <a name="112" href="#112">112</a> <strong>final</strong> InputStream inputStream = is;<a name="113" href="#113">113</a> <strong>return</strong> <strong>new</strong> URLConnection(u) {<a name="114" href="#114">114</a> <strong>private</strong> InputStream is = inputStream;<a name="115" href="#115">115</a> @Override<a name="116" href="#116">116</a> <strong>public</strong> InputStream getInputStream() throws IOException {<a name="117" href="#117">117</a> <strong>return</strong> <strong>this</strong>.is;<a name="118" href="#118">118</a> }<a name="119" href="#119">119</a> @Override<a name="120" href="#120">120</a> <strong>public</strong> <strong>void</strong> connect() throws IOException {<a name="121" href="#121">121</a> <em class="comment">// Nothing to do. When we give back this object, we're</em><a name="122" href="#122">122</a> <em class="comment">// connected.</em><a name="123" href="#123">123</a> }<a name="124" href="#124">124</a> };<a name="125" href="#125">125</a> }<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> * Main dumps rsync file to STDOUT.</em><a name="129" href="#129">129</a> <em> * @param args</em><a name="130" href="#130">130</a> <em> * @throws IOException</em><a name="131" href="#131">131</a> <em> */</em><a name="132" href="#132">132</a> <strong>public</strong> <strong>static</strong> <strong>void</strong> main(String[] args)<a name="133" href="#133">133</a> throws IOException {<a name="134" href="#134">134</a> <strong>if</strong> (args.length != 1) {<a name="135" href="#135">135</a> System.out.println(<span class="string">"Usage: java "</span> +<a name="136" href="#136">136</a> <span class="string">"org.archive.net.s3.Handler "</span> +<a name="137" href="#137">137</a> <span class="string">"s3://AWS_ACCESS_KEY_ID:AWS_ACCESS_KEY_SECRET@BUCKET/KEY"</span>);<a name="138" href="#138">138</a> System.exit(1);<a name="139" href="#139">139</a> }<a name="140" href="#140">140</a> URL u = <strong>new</strong> URL(args[0]);<a name="141" href="#141">141</a> URLConnection connect = u.openConnection();<a name="142" href="#142">142</a> <em class="comment">// Write download to stdout.</em><a name="143" href="#143">143</a> <strong>final</strong> <strong>int</strong> bufferlength = 4096;<a name="144" href="#144">144</a> byte [] buffer = <strong>new</strong> byte [bufferlength];<a name="145" href="#145">145</a> InputStream is = connect.getInputStream();<a name="146" href="#146">146</a> <strong>try</strong> {<a name="147" href="#147">147</a> <strong>for</strong> (<strong>int</strong> count = -1;<a name="148" href="#148">148</a> (count = is.read(buffer, 0, bufferlength)) != -1;) {<a name="149" href="#149">149</a> System.out.write(buffer, 0, count);<a name="150" href="#150">150</a> }<a name="151" href="#151">151</a> System.out.flush();<a name="152" href="#152">152</a> } <strong>finally</strong> {<a name="153" href="#153">153</a> is.close();<a name="154" href="#154">154</a> }<a name="155" href="#155">155</a> }<a name="156" href="#156">156</a> }</pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>⌨️ 快捷键说明
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