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<FONT color="green">001</FONT>    /**<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<FONT color="green">003</FONT>     * or more contributor license agreements.  See the NOTICE file<a name="line.3"></a>
<FONT color="green">004</FONT>     * distributed with this work for additional information<a name="line.4"></a>
<FONT color="green">005</FONT>     * regarding copyright ownership.  The ASF licenses this file<a name="line.5"></a>
<FONT color="green">006</FONT>     * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<FONT color="green">007</FONT>     * "License"); you may not use this file except in compliance<a name="line.7"></a>
<FONT color="green">008</FONT>     * with the License.  You may obtain a copy of the License at<a name="line.8"></a>
<FONT color="green">009</FONT>     *<a name="line.9"></a>
<FONT color="green">010</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<FONT color="green">011</FONT>     *<a name="line.11"></a>
<FONT color="green">012</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<FONT color="green">013</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<FONT color="green">014</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<FONT color="green">015</FONT>     * See the License for the specific language governing permissions and<a name="line.15"></a>
<FONT color="green">016</FONT>     * limitations under the License.<a name="line.16"></a>
<FONT color="green">017</FONT>     */<a name="line.17"></a>
<FONT color="green">018</FONT>    package org.apache.hadoop.fs.http.client;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    import org.apache.hadoop.conf.Configuration;<a name="line.20"></a>
<FONT color="green">021</FONT>    import org.apache.hadoop.fs.ContentSummary;<a name="line.21"></a>
<FONT color="green">022</FONT>    import org.apache.hadoop.fs.FSDataInputStream;<a name="line.22"></a>
<FONT color="green">023</FONT>    import org.apache.hadoop.fs.FSDataOutputStream;<a name="line.23"></a>
<FONT color="green">024</FONT>    import org.apache.hadoop.fs.FileChecksum;<a name="line.24"></a>
<FONT color="green">025</FONT>    import org.apache.hadoop.fs.FileStatus;<a name="line.25"></a>
<FONT color="green">026</FONT>    import org.apache.hadoop.fs.FileSystem;<a name="line.26"></a>
<FONT color="green">027</FONT>    import org.apache.hadoop.fs.Path;<a name="line.27"></a>
<FONT color="green">028</FONT>    import org.apache.hadoop.fs.PositionedReadable;<a name="line.28"></a>
<FONT color="green">029</FONT>    import org.apache.hadoop.fs.Seekable;<a name="line.29"></a>
<FONT color="green">030</FONT>    import org.apache.hadoop.fs.permission.FsPermission;<a name="line.30"></a>
<FONT color="green">031</FONT>    import org.apache.hadoop.security.UserGroupInformation;<a name="line.31"></a>
<FONT color="green">032</FONT>    import org.apache.hadoop.security.authentication.client.AuthenticatedURL;<a name="line.32"></a>
<FONT color="green">033</FONT>    import org.apache.hadoop.security.authentication.client.Authenticator;<a name="line.33"></a>
<FONT color="green">034</FONT>    import org.apache.hadoop.util.Progressable;<a name="line.34"></a>
<FONT color="green">035</FONT>    import org.apache.hadoop.util.ReflectionUtils;<a name="line.35"></a>
<FONT color="green">036</FONT>    import org.apache.hadoop.util.StringUtils;<a name="line.36"></a>
<FONT color="green">037</FONT>    import org.json.simple.JSONArray;<a name="line.37"></a>
<FONT color="green">038</FONT>    import org.json.simple.JSONObject;<a name="line.38"></a>
<FONT color="green">039</FONT>    import org.json.simple.parser.JSONParser;<a name="line.39"></a>
<FONT color="green">040</FONT>    import org.json.simple.parser.ParseException;<a name="line.40"></a>
<FONT color="green">041</FONT>    <a name="line.41"></a>
<FONT color="green">042</FONT>    import java.io.BufferedInputStream;<a name="line.42"></a>
<FONT color="green">043</FONT>    import java.io.BufferedOutputStream;<a name="line.43"></a>
<FONT color="green">044</FONT>    import java.io.DataInput;<a name="line.44"></a>
<FONT color="green">045</FONT>    import java.io.DataOutput;<a name="line.45"></a>
<FONT color="green">046</FONT>    import java.io.FileNotFoundException;<a name="line.46"></a>
<FONT color="green">047</FONT>    import java.io.FilterInputStream;<a name="line.47"></a>
<FONT color="green">048</FONT>    import java.io.IOException;<a name="line.48"></a>
<FONT color="green">049</FONT>    import java.io.InputStream;<a name="line.49"></a>
<FONT color="green">050</FONT>    import java.io.InputStreamReader;<a name="line.50"></a>
<FONT color="green">051</FONT>    import java.io.OutputStream;<a name="line.51"></a>
<FONT color="green">052</FONT>    import java.lang.reflect.Constructor;<a name="line.52"></a>
<FONT color="green">053</FONT>    import java.net.HttpURLConnection;<a name="line.53"></a>
<FONT color="green">054</FONT>    import java.net.URI;<a name="line.54"></a>
<FONT color="green">055</FONT>    import java.net.URISyntaxException;<a name="line.55"></a>
<FONT color="green">056</FONT>    import java.net.URL;<a name="line.56"></a>
<FONT color="green">057</FONT>    import java.net.URLEncoder;<a name="line.57"></a>
<FONT color="green">058</FONT>    import java.text.MessageFormat;<a name="line.58"></a>
<FONT color="green">059</FONT>    import java.util.HashMap;<a name="line.59"></a>
<FONT color="green">060</FONT>    import java.util.Map;<a name="line.60"></a>
<FONT color="green">061</FONT>    <a name="line.61"></a>
<FONT color="green">062</FONT>    /**<a name="line.62"></a>
<FONT color="green">063</FONT>     * HttpFSServer implementation of the FileSystemAccess FileSystem.<a name="line.63"></a>
<FONT color="green">064</FONT>     * &lt;p/&gt;<a name="line.64"></a>
<FONT color="green">065</FONT>     * This implementation allows a user to access HDFS over HTTP via a HttpFSServer server.<a name="line.65"></a>
<FONT color="green">066</FONT>     */<a name="line.66"></a>
<FONT color="green">067</FONT>    public class HttpFSFileSystem extends FileSystem {<a name="line.67"></a>
<FONT color="green">068</FONT>    <a name="line.68"></a>
<FONT color="green">069</FONT>      public static final String SERVICE_NAME = "/webhdfs";<a name="line.69"></a>
<FONT color="green">070</FONT>    <a name="line.70"></a>
<FONT color="green">071</FONT>      public static final String SERVICE_VERSION = "/v1";<a name="line.71"></a>
<FONT color="green">072</FONT>    <a name="line.72"></a>
<FONT color="green">073</FONT>      public static final String SERVICE_PREFIX = SERVICE_NAME + SERVICE_VERSION;<a name="line.73"></a>
<FONT color="green">074</FONT>    <a name="line.74"></a>
<FONT color="green">075</FONT>      public static final String OP_PARAM = "op";<a name="line.75"></a>
<FONT color="green">076</FONT>      public static final String DO_AS_PARAM = "doas";<a name="line.76"></a>
<FONT color="green">077</FONT>      public static final String OVERWRITE_PARAM = "overwrite";<a name="line.77"></a>
<FONT color="green">078</FONT>      public static final String REPLICATION_PARAM = "replication";<a name="line.78"></a>
<FONT color="green">079</FONT>      public static final String BLOCKSIZE_PARAM = "blocksize";<a name="line.79"></a>
<FONT color="green">080</FONT>      public static final String PERMISSION_PARAM = "permission";<a name="line.80"></a>
<FONT color="green">081</FONT>      public static final String DESTINATION_PARAM = "destination";<a name="line.81"></a>
<FONT color="green">082</FONT>      public static final String RECURSIVE_PARAM = "recursive";<a name="line.82"></a>
<FONT color="green">083</FONT>      public static final String OWNER_PARAM = "owner";<a name="line.83"></a>
<FONT color="green">084</FONT>      public static final String GROUP_PARAM = "group";<a name="line.84"></a>
<FONT color="green">085</FONT>      public static final String MODIFICATION_TIME_PARAM = "modificationtime";<a name="line.85"></a>
<FONT color="green">086</FONT>      public static final String ACCESS_TIME_PARAM = "accesstime";<a name="line.86"></a>
<FONT color="green">087</FONT>      public static final String RENEWER_PARAM = "renewer";<a name="line.87"></a>
<FONT color="green">088</FONT>    <a name="line.88"></a>
<FONT color="green">089</FONT>      public static final String DEFAULT_PERMISSION = "default";<a name="line.89"></a>
<FONT color="green">090</FONT>    <a name="line.90"></a>
<FONT color="green">091</FONT>      public static final String RENAME_JSON = "boolean";<a name="line.91"></a>
<FONT color="green">092</FONT>    <a name="line.92"></a>
<FONT color="green">093</FONT>      public static final String DELETE_JSON = "boolean";<a name="line.93"></a>
<FONT color="green">094</FONT>    <a name="line.94"></a>
<FONT color="green">095</FONT>      public static final String MKDIRS_JSON = "boolean";<a name="line.95"></a>
<FONT color="green">096</FONT>    <a name="line.96"></a>
<FONT color="green">097</FONT>      public static final String HOME_DIR_JSON = "Path";<a name="line.97"></a>
<FONT color="green">098</FONT>    <a name="line.98"></a>
<FONT color="green">099</FONT>      public static final String SET_REPLICATION_JSON = "boolean";<a name="line.99"></a>
<FONT color="green">100</FONT>    <a name="line.100"></a>
<FONT color="green">101</FONT>      public static final String UPLOAD_CONTENT_TYPE= "application/octet-stream";<a name="line.101"></a>
<FONT color="green">102</FONT>    <a name="line.102"></a>
<FONT color="green">103</FONT>      public static enum FILE_TYPE {<a name="line.103"></a>
<FONT color="green">104</FONT>        FILE, DIRECTORY, SYMLINK;<a name="line.104"></a>
<FONT color="green">105</FONT>    <a name="line.105"></a>
<FONT color="green">106</FONT>        public static FILE_TYPE getType(FileStatus fileStatus) {<a name="line.106"></a>
<FONT color="green">107</FONT>          if (fileStatus.isFile()) {<a name="line.107"></a>
<FONT color="green">108</FONT>            return FILE;<a name="line.108"></a>
<FONT color="green">109</FONT>          }<a name="line.109"></a>
<FONT color="green">110</FONT>          if (fileStatus.isDirectory()) {<a name="line.110"></a>
<FONT color="green">111</FONT>            return DIRECTORY;<a name="line.111"></a>
<FONT color="green">112</FONT>          }<a name="line.112"></a>
<FONT color="green">113</FONT>          if (fileStatus.isSymlink()) {<a name="line.113"></a>
<FONT color="green">114</FONT>            return SYMLINK;<a name="line.114"></a>
<FONT color="green">115</FONT>          }<a name="line.115"></a>
<FONT color="green">116</FONT>          throw new IllegalArgumentException("Could not determine filetype for: " +<a name="line.116"></a>
<FONT color="green">117</FONT>                                             fileStatus.getPath());<a name="line.117"></a>
<FONT color="green">118</FONT>        }<a name="line.118"></a>
<FONT color="green">119</FONT>      }<a name="line.119"></a>
<FONT color="green">120</FONT>    <a name="line.120"></a>
<FONT color="green">121</FONT>      public static final String FILE_STATUSES_JSON = "FileStatuses";<a name="line.121"></a>
<FONT color="green">122</FONT>      public static final String FILE_STATUS_JSON = "FileStatus";<a name="line.122"></a>
<FONT color="green">123</FONT>      public static final String PATH_SUFFIX_JSON = "pathSuffix";<a name="line.123"></a>
<FONT color="green">124</FONT>      public static final String TYPE_JSON = "type";<a name="line.124"></a>
<FONT color="green">125</FONT>      public static final String LENGTH_JSON = "length";<a name="line.125"></a>
<FONT color="green">126</FONT>      public static final String OWNER_JSON = "owner";<a name="line.126"></a>
<FONT color="green">127</FONT>      public static final String GROUP_JSON = "group";<a name="line.127"></a>
<FONT color="green">128</FONT>      public static final String PERMISSION_JSON = "permission";<a name="line.128"></a>
<FONT color="green">129</FONT>      public static final String ACCESS_TIME_JSON = "accessTime";<a name="line.129"></a>
<FONT color="green">130</FONT>      public static final String MODIFICATION_TIME_JSON = "modificationTime";<a name="line.130"></a>
<FONT color="green">131</FONT>      public static final String BLOCK_SIZE_JSON = "blockSize";<a name="line.131"></a>
<FONT color="green">132</FONT>      public static final String REPLICATION_JSON = "replication";<a name="line.132"></a>
<FONT color="green">133</FONT>    <a name="line.133"></a>
<FONT color="green">134</FONT>      public static final String FILE_CHECKSUM_JSON = "FileChecksum";<a name="line.134"></a>
<FONT color="green">135</FONT>      public static final String CHECKSUM_ALGORITHM_JSON = "algorithm";<a name="line.135"></a>
<FONT color="green">136</FONT>      public static final String CHECKSUM_BYTES_JSON = "bytes";<a name="line.136"></a>
<FONT color="green">137</FONT>      public static final String CHECKSUM_LENGTH_JSON = "length";<a name="line.137"></a>
<FONT color="green">138</FONT>    <a name="line.138"></a>
<FONT color="green">139</FONT>      public static final String CONTENT_SUMMARY_JSON = "ContentSummary";<a name="line.139"></a>
<FONT color="green">140</FONT>      public static final String CONTENT_SUMMARY_DIRECTORY_COUNT_JSON = "directoryCount";<a name="line.140"></a>
<FONT color="green">141</FONT>      public static final String CONTENT_SUMMARY_FILE_COUNT_JSON = "fileCount";<a name="line.141"></a>
<FONT color="green">142</FONT>      public static final String CONTENT_SUMMARY_LENGTH_JSON = "length";<a name="line.142"></a>
<FONT color="green">143</FONT>      public static final String CONTENT_SUMMARY_QUOTA_JSON = "quota";<a name="line.143"></a>
<FONT color="green">144</FONT>      public static final String CONTENT_SUMMARY_SPACE_CONSUMED_JSON = "spaceConsumed";<a name="line.144"></a>
<FONT color="green">145</FONT>      public static final String CONTENT_SUMMARY_SPACE_QUOTA_JSON = "spaceQuota";<a name="line.145"></a>
<FONT color="green">146</FONT>    <a name="line.146"></a>
<FONT color="green">147</FONT>      public static final String DELEGATION_TOKEN_JSON = "Token";<a name="line.147"></a>
<FONT color="green">148</FONT>      public static final String DELEGATION_TOKEN_URL_STRING_JSON = "urlString";<a name="line.148"></a>
<FONT color="green">149</FONT>    <a name="line.149"></a>
<FONT color="green">150</FONT>      public static final String ERROR_JSON = "RemoteException";<a name="line.150"></a>
<FONT color="green">151</FONT>      public static final String ERROR_EXCEPTION_JSON = "exception";<a name="line.151"></a>
<FONT color="green">152</FONT>      public static final String ERROR_CLASSNAME_JSON = "javaClassName";<a name="line.152"></a>
<FONT color="green">153</FONT>      public static final String ERROR_MESSAGE_JSON = "message";<a name="line.153"></a>
<FONT color="green">154</FONT>    <a name="line.154"></a>
<FONT color="green">155</FONT>      public static final int HTTP_TEMPORARY_REDIRECT = 307;<a name="line.155"></a>
<FONT color="green">156</FONT>    <a name="line.156"></a>
<FONT color="green">157</FONT>    <a name="line.157"></a>
<FONT color="green">158</FONT>      /**<a name="line.158"></a>
<FONT color="green">159</FONT>       * Get operations.<a name="line.159"></a>
<FONT color="green">160</FONT>       */<a name="line.160"></a>
<FONT color="green">161</FONT>      public enum GetOpValues {<a name="line.161"></a>
<FONT color="green">162</FONT>        OPEN, GETFILESTATUS, LISTSTATUS, GETHOMEDIRECTORY, GETCONTENTSUMMARY, GETFILECHECKSUM,<a name="line.162"></a>
<FONT color="green">163</FONT>        GETDELEGATIONTOKEN, GETFILEBLOCKLOCATIONS, INSTRUMENTATION<a name="line.163"></a>
<FONT color="green">164</FONT>      }<a name="line.164"></a>
<FONT color="green">165</FONT>    <a name="line.165"></a>
<FONT color="green">166</FONT>      /**<a name="line.166"></a>
<FONT color="green">167</FONT>       * Post operations.<a name="line.167"></a>
<FONT color="green">168</FONT>       */<a name="line.168"></a>
<FONT color="green">169</FONT>      public static enum PostOpValues {<a name="line.169"></a>
<FONT color="green">170</FONT>        APPEND<a name="line.170"></a>
<FONT color="green">171</FONT>      }<a name="line.171"></a>
<FONT color="green">172</FONT>    <a name="line.172"></a>
<FONT color="green">173</FONT>      /**<a name="line.173"></a>
<FONT color="green">174</FONT>       * Put operations.<a name="line.174"></a>
<FONT color="green">175</FONT>       */<a name="line.175"></a>
<FONT color="green">176</FONT>      public static enum PutOpValues {<a name="line.176"></a>
<FONT color="green">177</FONT>        CREATE, MKDIRS, RENAME, SETOWNER, SETPERMISSION, SETREPLICATION, SETTIMES,<a name="line.177"></a>
<FONT color="green">178</FONT>        RENEWDELEGATIONTOKEN, CANCELDELEGATIONTOKEN<a name="line.178"></a>
<FONT color="green">179</FONT>      }<a name="line.179"></a>
<FONT color="green">180</FONT>    <a name="line.180"></a>
<FONT color="green">181</FONT>      /**<a name="line.181"></a>
<FONT color="green">182</FONT>       * Delete operations.<a name="line.182"></a>
<FONT color="green">183</FONT>       */<a name="line.183"></a>
<FONT color="green">184</FONT>      public static enum DeleteOpValues {<a name="line.184"></a>
<FONT color="green">185</FONT>        DELETE<a name="line.185"></a>
<FONT color="green">186</FONT>      }<a name="line.186"></a>
<FONT color="green">187</FONT>    <a name="line.187"></a>
<FONT color="green">188</FONT>      private static final String HTTP_GET = "GET";<a name="line.188"></a>
<FONT color="green">189</FONT>      private static final String HTTP_PUT = "PUT";<a name="line.189"></a>
<FONT color="green">190</FONT>      private static final String HTTP_POST = "POST";<a name="line.190"></a>
<FONT color="green">191</FONT>      private static final String HTTP_DELETE = "DELETE";<a name="line.191"></a>
<FONT color="green">192</FONT>    <a name="line.192"></a>
<FONT color="green">193</FONT>      private AuthenticatedURL.Token authToken = new AuthenticatedURL.Token();<a name="line.193"></a>
<FONT color="green">194</FONT>      private URI uri;<a name="line.194"></a>
<FONT color="green">195</FONT>      private Path workingDir;<a name="line.195"></a>
<FONT color="green">196</FONT>      private String doAs;<a name="line.196"></a>
<FONT color="green">197</FONT>    <a name="line.197"></a>
<FONT color="green">198</FONT>      /**<a name="line.198"></a>
<FONT color="green">199</FONT>       * Convenience method that creates a &lt;code&gt;HttpURLConnection&lt;/code&gt; for the<a name="line.199"></a>
<FONT color="green">200</FONT>       * HttpFSServer file system operations.<a name="line.200"></a>
<FONT color="green">201</FONT>       * &lt;p/&gt;<a name="line.201"></a>
<FONT color="green">202</FONT>       * This methods performs and injects any needed authentication credentials<a name="line.202"></a>
<FONT color="green">203</FONT>       * via the {@link #getConnection(URL, String)} method<a name="line.203"></a>
<FONT color="green">204</FONT>       *<a name="line.204"></a>
<FONT color="green">205</FONT>       * @param method the HTTP method.<a name="line.205"></a>
<FONT color="green">206</FONT>       * @param params the query string parameters.<a name="line.206"></a>
<FONT color="green">207</FONT>       * @param path the file path<a name="line.207"></a>
<FONT color="green">208</FONT>       * @param makeQualified if the path should be 'makeQualified'<a name="line.208"></a>
<FONT color="green">209</FONT>       *<a name="line.209"></a>
<FONT color="green">210</FONT>       * @return a &lt;code&gt;HttpURLConnection&lt;/code&gt; for the HttpFSServer server,<a name="line.210"></a>
<FONT color="green">211</FONT>       *         authenticated and ready to use for the specified path and file system operation.<a name="line.211"></a>
<FONT color="green">212</FONT>       *<a name="line.212"></a>
<FONT color="green">213</FONT>       * @throws IOException thrown if an IO error occurrs.<a name="line.213"></a>
<FONT color="green">214</FONT>       */<a name="line.214"></a>
<FONT color="green">215</FONT>      private HttpURLConnection getConnection(String method, Map&lt;String, String&gt; params,<a name="line.215"></a>
<FONT color="green">216</FONT>                                              Path path, boolean makeQualified) throws IOException {<a name="line.216"></a>
<FONT color="green">217</FONT>        params.put(DO_AS_PARAM, doAs);<a name="line.217"></a>
<FONT color="green">218</FONT>        if (makeQualified) {<a name="line.218"></a>
<FONT color="green">219</FONT>          path = makeQualified(path);<a name="line.219"></a>
<FONT color="green">220</FONT>        }<a name="line.220"></a>
<FONT color="green">221</FONT>        URI uri = path.toUri();<a name="line.221"></a>
<FONT color="green">222</FONT>        StringBuilder sb = new StringBuilder();<a name="line.222"></a>
<FONT color="green">223</FONT>        sb.append(uri.getScheme()).append("://").append(uri.getAuthority()).<a name="line.223"></a>
<FONT color="green">224</FONT>          append(SERVICE_PREFIX).append(uri.getPath());<a name="line.224"></a>
<FONT color="green">225</FONT>    <a name="line.225"></a>
<FONT color="green">226</FONT>        String separator = "?";<a name="line.226"></a>
<FONT color="green">227</FONT>        for (Map.Entry&lt;String, String&gt; entry : params.entrySet()) {<a name="line.227"></a>
<FONT color="green">228</FONT>          sb.append(separator).append(entry.getKey()).append("=").<a name="line.228"></a>
<FONT color="green">229</FONT>            append(URLEncoder.encode(entry.getValue(), "UTF8"));<a name="line.229"></a>
<FONT color="green">230</FONT>          separator = "&amp;";<a name="line.230"></a>
<FONT color="green">231</FONT>        }<a name="line.231"></a>
<FONT color="green">232</FONT>        URL url = new URL(sb.toString());<a name="line.232"></a>
<FONT color="green">233</FONT>        return getConnection(url, method);<a name="line.233"></a>
<FONT color="green">234</FONT>      }<a name="line.234"></a>
<FONT color="green">235</FONT>    <a name="line.235"></a>
<FONT color="green">236</FONT>      /**<a name="line.236"></a>
<FONT color="green">237</FONT>       * Convenience method that creates a &lt;code&gt;HttpURLConnection&lt;/code&gt; for the specified URL.<a name="line.237"></a>
<FONT color="green">238</FONT>       * &lt;p/&gt;<a name="line.238"></a>
<FONT color="green">239</FONT>       * This methods performs and injects any needed authentication credentials.<a name="line.239"></a>
<FONT color="green">240</FONT>       *<a name="line.240"></a>
<FONT color="green">241</FONT>       * @param url url to connect to.<a name="line.241"></a>
<FONT color="green">242</FONT>       * @param method the HTTP method.<a name="line.242"></a>
<FONT color="green">243</FONT>       *<a name="line.243"></a>
<FONT color="green">244</FONT>       * @return a &lt;code&gt;HttpURLConnection&lt;/code&gt; for the HttpFSServer server, authenticated and ready to use for<a name="line.244"></a>
<FONT color="green">245</FONT>       *         the specified path and file system operation.<a name="line.245"></a>
<FONT color="green">246</FONT>       *<a name="line.246"></a>
<FONT color="green">247</FONT>       * @throws IOException thrown if an IO error occurrs.<a name="line.247"></a>
<FONT color="green">248</FONT>       */<a name="line.248"></a>
<FONT color="green">249</FONT>      private HttpURLConnection getConnection(URL url, String method) throws IOException {<a name="line.249"></a>
<FONT color="green">250</FONT>        Class&lt;? extends Authenticator&gt; klass =<a name="line.250"></a>
<FONT color="green">251</FONT>          getConf().getClass("httpfs.authenticator.class", HttpKerberosAuthenticator.class, Authenticator.class);<a name="line.251"></a>
<FONT color="green">252</FONT>        Authenticator authenticator = ReflectionUtils.newInstance(klass, getConf());<a name="line.252"></a>
<FONT color="green">253</FONT>        try {<a name="line.253"></a>
<FONT color="green">254</FONT>          HttpURLConnection conn = new AuthenticatedURL(authenticator).openConnection(url, authToken);<a name="line.254"></a>
<FONT color="green">255</FONT>          conn.setRequestMethod(method);<a name="line.255"></a>
<FONT color="green">256</FONT>          if (method.equals(HTTP_POST) || method.equals(HTTP_PUT)) {<a name="line.256"></a>
<FONT color="green">257</FONT>            conn.setDoOutput(true);<a name="line.257"></a>
<FONT color="green">258</FONT>          }<a name="line.258"></a>
<FONT color="green">259</FONT>          return conn;<a name="line.259"></a>
<FONT color="green">260</FONT>        } catch (Exception ex) {<a name="line.260"></a>
<FONT color="green">261</FONT>          throw new IOException(ex);<a name="line.261"></a>
<FONT color="green">262</FONT>        }<a name="line.262"></a>
<FONT color="green">263</FONT>      }<a name="line.263"></a>
<FONT color="green">264</FONT>    <a name="line.264"></a>
<FONT color="green">265</FONT>      /**<a name="line.265"></a>
<FONT color="green">266</FONT>       * Convenience method that JSON Parses the &lt;code&gt;InputStream&lt;/code&gt; of a &lt;code&gt;HttpURLConnection&lt;/code&gt;.<a name="line.266"></a>
<FONT color="green">267</FONT>       *<a name="line.267"></a>
<FONT color="green">268</FONT>       * @param conn the &lt;code&gt;HttpURLConnection&lt;/code&gt;.<a name="line.268"></a>
<FONT color="green">269</FONT>       *<a name="line.269"></a>
<FONT color="green">270</FONT>       * @return the parsed JSON object.<a name="line.270"></a>
<FONT color="green">271</FONT>       *<a name="line.271"></a>
<FONT color="green">272</FONT>       * @throws IOException thrown if the &lt;code&gt;InputStream&lt;/code&gt; could not be JSON parsed.<a name="line.272"></a>
<FONT color="green">273</FONT>       */<a name="line.273"></a>
<FONT color="green">274</FONT>      private static Object jsonParse(HttpURLConnection conn) throws IOException {<a name="line.274"></a>
<FONT color="green">275</FONT>        try {<a name="line.275"></a>
<FONT color="green">276</FONT>          JSONParser parser = new JSONParser();<a name="line.276"></a>
<FONT color="green">277</FONT>          return parser.parse(new InputStreamReader(conn.getInputStream()));<a name="line.277"></a>
<FONT color="green">278</FONT>        } catch (ParseException ex) {<a name="line.278"></a>
<FONT color="green">279</FONT>          throw new IOException("JSON parser error, " + ex.getMessage(), ex);<a name="line.279"></a>
<FONT color="green">280</FONT>        }<a name="line.280"></a>
<FONT color="green">281</FONT>      }<a name="line.281"></a>
<FONT color="green">282</FONT>    <a name="line.282"></a>
<FONT color="green">283</FONT>      /**<a name="line.283"></a>
<FONT color="green">284</FONT>       * Validates the status of an &lt;code&gt;HttpURLConnection&lt;/code&gt; against an expected HTTP<a name="line.284"></a>
<FONT color="green">285</FONT>       * status code. If the current status code is not the expected one it throws an exception<a name="line.285"></a>
<FONT color="green">286</FONT>       * with a detail message using Server side error messages if available.<a name="line.286"></a>
<FONT color="green">287</FONT>       *<a name="line.287"></a>
<FONT color="green">288</FONT>       * @param conn the &lt;code&gt;HttpURLConnection&lt;/code&gt;.<a name="line.288"></a>
<FONT color="green">289</FONT>       * @param expected the expected HTTP status code.<a name="line.289"></a>
<FONT color="green">290</FONT>       *<a name="line.290"></a>
<FONT color="green">291</FONT>       * @throws IOException thrown if the current status code does not match the expected one.<a name="line.291"></a>
<FONT color="green">292</FONT>       */<a name="line.292"></a>
<FONT color="green">293</FONT>      private static void validateResponse(HttpURLConnection conn, int expected) throws IOException {<a name="line.293"></a>
<FONT color="green">294</FONT>        int status = conn.getResponseCode();<a name="line.294"></a>
<FONT color="green">295</FONT>        if (status != expected) {<a name="line.295"></a>
<FONT color="green">296</FONT>          try {<a name="line.296"></a>
<FONT color="green">297</FONT>            JSONObject json = (JSONObject) jsonParse(conn);<a name="line.297"></a>
<FONT color="green">298</FONT>            json = (JSONObject) json.get(ERROR_JSON);<a name="line.298"></a>
<FONT color="green">299</FONT>            String message = (String) json.get(ERROR_MESSAGE_JSON);<a name="line.299"></a>
<FONT color="green">300</FONT>            String exception = (String) json.get(ERROR_EXCEPTION_JSON);<a name="line.300"></a>
<FONT color="green">301</FONT>            String className = (String) json.get(ERROR_CLASSNAME_JSON);<a name="line.301"></a>
<FONT color="green">302</FONT>    <a name="line.302"></a>
<FONT color="green">303</FONT>            try {<a name="line.303"></a>
<FONT color="green">304</FONT>              ClassLoader cl = HttpFSFileSystem.class.getClassLoader();<a name="line.304"></a>
<FONT color="green">305</FONT>              Class klass = cl.loadClass(className);<a name="line.305"></a>
<FONT color="green">306</FONT>              Constructor constr = klass.getConstructor(String.class);<a name="line.306"></a>
<FONT color="green">307</FONT>              throw (IOException) constr.newInstance(message);<a name="line.307"></a>
<FONT color="green">308</FONT>            } catch (IOException ex) {<a name="line.308"></a>
<FONT color="green">309</FONT>              throw ex;<a name="line.309"></a>
<FONT color="green">310</FONT>            } catch (Exception ex) {<a name="line.310"></a>
<FONT color="green">311</FONT>              throw new IOException(MessageFormat.format("{0} - {1}", exception, message));<a name="line.311"></a>
<FONT color="green">312</FONT>            }<a name="line.312"></a>
<FONT color="green">313</FONT>          } catch (IOException ex) {<a name="line.313"></a>
<FONT color="green">314</FONT>            if (ex.getCause() instanceof IOException) {<a name="line.314"></a>
<FONT color="green">315</FONT>              throw (IOException) ex.getCause();<a name="line.315"></a>
<FONT color="green">316</FONT>            }<a name="line.316"></a>
<FONT color="green">317</FONT>            throw new IOException(MessageFormat.format("HTTP status [{0}], {1}", status, conn.getResponseMessage()));<a name="line.317"></a>
<FONT color="green">318</FONT>          }<a name="line.318"></a>
<FONT color="green">319</FONT>        }<a name="line.319"></a>
<FONT color="green">320</FONT>      }<a name="line.320"></a>
<FONT color="green">321</FONT>    <a name="line.321"></a>
<FONT color="green">322</FONT>      /**<a name="line.322"></a>
<FONT color="green">323</FONT>       * Called after a new FileSystem instance is constructed.<a name="line.323"></a>
<FONT color="green">324</FONT>       *<a name="line.324"></a>
<FONT color="green">325</FONT>       * @param name a uri whose authority section names the host, port, etc. for this FileSystem<a name="line.325"></a>
<FONT color="green">326</FONT>       * @param conf the configuration<a name="line.326"></a>
<FONT color="green">327</FONT>       */<a name="line.327"></a>
<FONT color="green">328</FONT>      @Override<a name="line.328"></a>
<FONT color="green">329</FONT>      public void initialize(URI name, Configuration conf) throws IOException {<a name="line.329"></a>
<FONT color="green">330</FONT>        UserGroupInformation ugi = UserGroupInformation.getCurrentUser();<a name="line.330"></a>
<FONT color="green">331</FONT>        doAs = ugi.getUserName();<a name="line.331"></a>
<FONT color="green">332</FONT>        super.initialize(name, conf);<a name="line.332"></a>
<FONT color="green">333</FONT>        try {<a name="line.333"></a>
<FONT color="green">334</FONT>          uri = new URI(name.getScheme() + "://" + name.getHost() + ":" + name.getPort());<a name="line.334"></a>
<FONT color="green">335</FONT>        } catch (URISyntaxException ex) {<a name="line.335"></a>
<FONT color="green">336</FONT>          throw new IOException(ex);<a name="line.336"></a>
<FONT color="green">337</FONT>        }<a name="line.337"></a>
<FONT color="green">338</FONT>      }<a name="line.338"></a>
<FONT color="green">339</FONT>    <a name="line.339"></a>
<FONT color="green">340</FONT>      /**<a name="line.340"></a>
<FONT color="green">341</FONT>       * Returns a URI whose scheme and authority identify this FileSystem.<a name="line.341"></a>
<FONT color="green">342</FONT>       *<a name="line.342"></a>
<FONT color="green">343</FONT>       * @return the URI whose scheme and authority identify this FileSystem.<a name="line.343"></a>
<FONT color="green">344</FONT>       */<a name="line.344"></a>
<FONT color="green">345</FONT>      @Override<a name="line.345"></a>
<FONT color="green">346</FONT>      public URI getUri() {<a name="line.346"></a>
<FONT color="green">347</FONT>        return uri;<a name="line.347"></a>
<FONT color="green">348</FONT>      }<a name="line.348"></a>
<FONT color="green">349</FONT>    <a name="line.349"></a>
<FONT color="green">350</FONT>      /**<a name="line.350"></a>
<FONT color="green">351</FONT>       * HttpFSServer subclass of the &lt;code&gt;FSDataInputStream&lt;/code&gt;.<a name="line.351"></a>
<FONT color="green">352</FONT>       * &lt;p/&gt;<a name="line.352"></a>
<FONT color="green">353</FONT>       * This implementation does not support the<a name="line.353"></a>
<FONT color="green">354</FONT>       * &lt;code&gt;PositionReadable&lt;/code&gt; and &lt;code&gt;Seekable&lt;/code&gt; methods.<a name="line.354"></a>
<FONT color="green">355</FONT>       */<a name="line.355"></a>
<FONT color="green">356</FONT>      private static class HttpFSDataInputStream extends FilterInputStream implements Seekable, PositionedReadable {<a name="line.356"></a>
<FONT color="green">357</FONT>    <a name="line.357"></a>
<FONT color="green">358</FONT>        protected HttpFSDataInputStream(InputStream in, int bufferSize) {<a name="line.358"></a>
<FONT color="green">359</FONT>          super(new BufferedInputStream(in, bufferSize));<a name="line.359"></a>
<FONT color="green">360</FONT>        }<a name="line.360"></a>
<FONT color="green">361</FONT>    <a name="line.361"></a>
<FONT color="green">362</FONT>        @Override<a name="line.362"></a>
<FONT color="green">363</FONT>        public int read(long position, byte[] buffer, int offset, int length) throws IOException {<a name="line.363"></a>
<FONT color="green">364</FONT>          throw new UnsupportedOperationException();<a name="line.364"></a>
<FONT color="green">365</FONT>        }<a name="line.365"></a>
<FONT color="green">366</FONT>    <a name="line.366"></a>
<FONT color="green">367</FONT>        @Override<a name="line.367"></a>
<FONT color="green">368</FONT>        public void readFully(long position, byte[] buffer, int offset, int length) throws IOException {<a name="line.368"></a>
<FONT color="green">369</FONT>          throw new UnsupportedOperationException();<a name="line.369"></a>
<FONT color="green">370</FONT>        }<a name="line.370"></a>
<FONT color="green">371</FONT>    <a name="line.371"></a>
<FONT color="green">372</FONT>        @Override<a name="line.372"></a>
<FONT color="green">373</FONT>        public void readFully(long position, byte[] buffer) throws IOException {<a name="line.373"></a>
<FONT color="green">374</FONT>          throw new UnsupportedOperationException();<a name="line.374"></a>
<FONT color="green">375</FONT>        }<a name="line.375"></a>
<FONT color="green">376</FONT>    <a name="line.376"></a>
<FONT color="green">377</FONT>        @Override<a name="line.377"></a>
<FONT color="green">378</FONT>        public void seek(long pos) throws IOException {<a name="line.378"></a>
<FONT color="green">379</FONT>          throw new UnsupportedOperationException();<a name="line.379"></a>
<FONT color="green">380</FONT>        }<a name="line.380"></a>
<FONT color="green">381</FONT>    <a name="line.381"></a>
<FONT color="green">382</FONT>        @Override<a name="line.382"></a>
<FONT color="green">383</FONT>        public long getPos() throws IOException {<a name="line.383"></a>
<FONT color="green">384</FONT>          throw new UnsupportedOperationException();<a name="line.384"></a>
<FONT color="green">385</FONT>        }<a name="line.385"></a>
<FONT color="green">386</FONT>    <a name="line.386"></a>
<FONT color="green">387</FONT>        @Override<a name="line.387"></a>
<FONT color="green">388</FONT>        public boolean seekToNewSource(long targetPos) throws IOException {<a name="line.388"></a>
<FONT color="green">389</FONT>          throw new UnsupportedOperationException();<a name="line.389"></a>
<FONT color="green">390</FONT>        }<a name="line.390"></a>
<FONT color="green">391</FONT>      }<a name="line.391"></a>
<FONT color="green">392</FONT>    <a name="line.392"></a>
<FONT color="green">393</FONT>      /**<a name="line.393"></a>
<FONT color="green">394</FONT>       * Opens an FSDataInputStream at the indicated Path.<a name="line.394"></a>
<FONT color="green">395</FONT>       * &lt;/p&gt;<a name="line.395"></a>
<FONT color="green">396</FONT>       * IMPORTANT: the returned &lt;code&gt;&lt;FSDataInputStream/code&gt; does not support the<a name="line.396"></a>
<FONT color="green">397</FONT>       * &lt;code&gt;PositionReadable&lt;/code&gt; and &lt;code&gt;Seekable&lt;/code&gt; methods.<a name="line.397"></a>
<FONT color="green">398</FONT>       *<a name="line.398"></a>
<FONT color="green">399</FONT>       * @param f the file name to open<a name="line.399"></a>
<FONT color="green">400</FONT>       * @param bufferSize the size of the buffer to be used.<a name="line.400"></a>
<FONT color="green">401</FONT>       */<a name="line.401"></a>
<FONT color="green">402</FONT>      @Override<a name="line.402"></a>
<FONT color="green">403</FONT>      public FSDataInputStream open(Path f, int bufferSize) throws IOException {<a name="line.403"></a>
<FONT color="green">404</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.404"></a>
<FONT color="green">405</FONT>        params.put(OP_PARAM, GetOpValues.OPEN.toString());<a name="line.405"></a>
<FONT color="green">406</FONT>        HttpURLConnection conn = getConnection(HTTP_GET, params, f, true);<a name="line.406"></a>
<FONT color="green">407</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.407"></a>
<FONT color="green">408</FONT>        return new FSDataInputStream(new HttpFSDataInputStream(conn.getInputStream(), bufferSize));<a name="line.408"></a>
<FONT color="green">409</FONT>      }<a name="line.409"></a>
<FONT color="green">410</FONT>    <a name="line.410"></a>
<FONT color="green">411</FONT>      /**<a name="line.411"></a>
<FONT color="green">412</FONT>       * HttpFSServer subclass of the &lt;code&gt;FSDataOutputStream&lt;/code&gt;.<a name="line.412"></a>
<FONT color="green">413</FONT>       * &lt;p/&gt;<a name="line.413"></a>
<FONT color="green">414</FONT>       * This implementation closes the underlying HTTP connection validating the Http connection status<a name="line.414"></a>
<FONT color="green">415</FONT>       * at closing time.<a name="line.415"></a>
<FONT color="green">416</FONT>       */<a name="line.416"></a>
<FONT color="green">417</FONT>      private static class HttpFSDataOutputStream extends FSDataOutputStream {<a name="line.417"></a>
<FONT color="green">418</FONT>        private HttpURLConnection conn;<a name="line.418"></a>
<FONT color="green">419</FONT>        private int closeStatus;<a name="line.419"></a>
<FONT color="green">420</FONT>    <a name="line.420"></a>
<FONT color="green">421</FONT>        public HttpFSDataOutputStream(HttpURLConnection conn, OutputStream out, int closeStatus, Statistics stats)<a name="line.421"></a>
<FONT color="green">422</FONT>          throws IOException {<a name="line.422"></a>
<FONT color="green">423</FONT>          super(out, stats);<a name="line.423"></a>
<FONT color="green">424</FONT>          this.conn = conn;<a name="line.424"></a>
<FONT color="green">425</FONT>          this.closeStatus = closeStatus;<a name="line.425"></a>
<FONT color="green">426</FONT>        }<a name="line.426"></a>
<FONT color="green">427</FONT>    <a name="line.427"></a>
<FONT color="green">428</FONT>        @Override<a name="line.428"></a>
<FONT color="green">429</FONT>        public void close() throws IOException {<a name="line.429"></a>
<FONT color="green">430</FONT>          try {<a name="line.430"></a>
<FONT color="green">431</FONT>            super.close();<a name="line.431"></a>
<FONT color="green">432</FONT>          } finally {<a name="line.432"></a>
<FONT color="green">433</FONT>            validateResponse(conn, closeStatus);<a name="line.433"></a>
<FONT color="green">434</FONT>          }<a name="line.434"></a>
<FONT color="green">435</FONT>        }<a name="line.435"></a>
<FONT color="green">436</FONT>    <a name="line.436"></a>
<FONT color="green">437</FONT>      }<a name="line.437"></a>
<FONT color="green">438</FONT>    <a name="line.438"></a>
<FONT color="green">439</FONT>      /**<a name="line.439"></a>
<FONT color="green">440</FONT>       * Converts a &lt;code&gt;FsPermission&lt;/code&gt; to a Unix octal representation.<a name="line.440"></a>
<FONT color="green">441</FONT>       *<a name="line.441"></a>
<FONT color="green">442</FONT>       * @param p the permission.<a name="line.442"></a>
<FONT color="green">443</FONT>       *<a name="line.443"></a>
<FONT color="green">444</FONT>       * @return the Unix string symbolic reprentation.<a name="line.444"></a>
<FONT color="green">445</FONT>       */<a name="line.445"></a>
<FONT color="green">446</FONT>      public static String permissionToString(FsPermission p) {<a name="line.446"></a>
<FONT color="green">447</FONT>        return (p == null) ? DEFAULT_PERMISSION : Integer.toString(p.toShort(), 8);<a name="line.447"></a>
<FONT color="green">448</FONT>      }<a name="line.448"></a>
<FONT color="green">449</FONT>    <a name="line.449"></a>
<FONT color="green">450</FONT>      /*<a name="line.450"></a>
<FONT color="green">451</FONT>       * Common handling for uploading data for create and append operations.<a name="line.451"></a>
<FONT color="green">452</FONT>       */<a name="line.452"></a>
<FONT color="green">453</FONT>      private FSDataOutputStream uploadData(String method, Path f, Map&lt;String, String&gt; params,<a name="line.453"></a>
<FONT color="green">454</FONT>                                            int bufferSize, int expectedStatus) throws IOException {<a name="line.454"></a>
<FONT color="green">455</FONT>        HttpURLConnection conn = getConnection(method, params, f, true);<a name="line.455"></a>
<FONT color="green">456</FONT>        conn.setInstanceFollowRedirects(false);<a name="line.456"></a>
<FONT color="green">457</FONT>        boolean exceptionAlreadyHandled = false;<a name="line.457"></a>
<FONT color="green">458</FONT>        try {<a name="line.458"></a>
<FONT color="green">459</FONT>          if (conn.getResponseCode() == HTTP_TEMPORARY_REDIRECT) {<a name="line.459"></a>
<FONT color="green">460</FONT>            exceptionAlreadyHandled = true;<a name="line.460"></a>
<FONT color="green">461</FONT>            String location = conn.getHeaderField("Location");<a name="line.461"></a>
<FONT color="green">462</FONT>            if (location != null) {<a name="line.462"></a>
<FONT color="green">463</FONT>              conn = getConnection(new URL(location), method);<a name="line.463"></a>
<FONT color="green">464</FONT>              conn.setRequestProperty("Content-Type", UPLOAD_CONTENT_TYPE);<a name="line.464"></a>
<FONT color="green">465</FONT>              try {<a name="line.465"></a>
<FONT color="green">466</FONT>                OutputStream os = new BufferedOutputStream(conn.getOutputStream(), bufferSize);<a name="line.466"></a>
<FONT color="green">467</FONT>                return new HttpFSDataOutputStream(conn, os, expectedStatus, statistics);<a name="line.467"></a>
<FONT color="green">468</FONT>              } catch (IOException ex) {<a name="line.468"></a>
<FONT color="green">469</FONT>                validateResponse(conn, expectedStatus);<a name="line.469"></a>
<FONT color="green">470</FONT>                throw ex;<a name="line.470"></a>
<FONT color="green">471</FONT>              }<a name="line.471"></a>
<FONT color="green">472</FONT>            } else {<a name="line.472"></a>
<FONT color="green">473</FONT>              validateResponse(conn, HTTP_TEMPORARY_REDIRECT);<a name="line.473"></a>
<FONT color="green">474</FONT>              throw new IOException("Missing HTTP 'Location' header for [" + conn.getURL() + "]");<a name="line.474"></a>
<FONT color="green">475</FONT>            }<a name="line.475"></a>
<FONT color="green">476</FONT>          } else {<a name="line.476"></a>
<FONT color="green">477</FONT>            throw new IOException(<a name="line.477"></a>
<FONT color="green">478</FONT>              MessageFormat.format("Expected HTTP status was [307], received [{0}]",<a name="line.478"></a>
<FONT color="green">479</FONT>                                   conn.getResponseCode()));<a name="line.479"></a>
<FONT color="green">480</FONT>          }<a name="line.480"></a>
<FONT color="green">481</FONT>        } catch (IOException ex) {<a name="line.481"></a>
<FONT color="green">482</FONT>          if (exceptionAlreadyHandled) {<a name="line.482"></a>
<FONT color="green">483</FONT>            throw ex;<a name="line.483"></a>
<FONT color="green">484</FONT>          } else {<a name="line.484"></a>
<FONT color="green">485</FONT>            validateResponse(conn, HTTP_TEMPORARY_REDIRECT);<a name="line.485"></a>
<FONT color="green">486</FONT>            throw ex;<a name="line.486"></a>
<FONT color="green">487</FONT>          }<a name="line.487"></a>
<FONT color="green">488</FONT>        }<a name="line.488"></a>
<FONT color="green">489</FONT>      }<a name="line.489"></a>
<FONT color="green">490</FONT>    <a name="line.490"></a>
<FONT color="green">491</FONT>    <a name="line.491"></a>
<FONT color="green">492</FONT>      /**<a name="line.492"></a>
<FONT color="green">493</FONT>       * Opens an FSDataOutputStream at the indicated Path with write-progress<a name="line.493"></a>
<FONT color="green">494</FONT>       * reporting.<a name="line.494"></a>
<FONT color="green">495</FONT>       * &lt;p/&gt;<a name="line.495"></a>
<FONT color="green">496</FONT>       * IMPORTANT: The &lt;code&gt;Progressable&lt;/code&gt; parameter is not used.<a name="line.496"></a>
<FONT color="green">497</FONT>       *<a name="line.497"></a>
<FONT color="green">498</FONT>       * @param f the file name to open.<a name="line.498"></a>
<FONT color="green">499</FONT>       * @param permission file permission.<a name="line.499"></a>
<FONT color="green">500</FONT>       * @param overwrite if a file with this name already exists, then if true,<a name="line.500"></a>
<FONT color="green">501</FONT>       * the file will be overwritten, and if false an error will be thrown.<a name="line.501"></a>
<FONT color="green">502</FONT>       * @param bufferSize the size of the buffer to be used.<a name="line.502"></a>
<FONT color="green">503</FONT>       * @param replication required block replication for the file.<a name="line.503"></a>
<FONT color="green">504</FONT>       * @param blockSize block size.<a name="line.504"></a>
<FONT color="green">505</FONT>       * @param progress progressable.<a name="line.505"></a>
<FONT color="green">506</FONT>       *<a name="line.506"></a>
<FONT color="green">507</FONT>       * @throws IOException<a name="line.507"></a>
<FONT color="green">508</FONT>       * @see #setPermission(Path, FsPermission)<a name="line.508"></a>
<FONT color="green">509</FONT>       */<a name="line.509"></a>
<FONT color="green">510</FONT>      @Override<a name="line.510"></a>
<FONT color="green">511</FONT>      public FSDataOutputStream create(Path f, FsPermission permission, boolean overwrite, int bufferSize,<a name="line.511"></a>
<FONT color="green">512</FONT>                                       short replication, long blockSize, Progressable progress) throws IOException {<a name="line.512"></a>
<FONT color="green">513</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.513"></a>
<FONT color="green">514</FONT>        params.put(OP_PARAM, PutOpValues.CREATE.toString());<a name="line.514"></a>
<FONT color="green">515</FONT>        params.put(OVERWRITE_PARAM, Boolean.toString(overwrite));<a name="line.515"></a>
<FONT color="green">516</FONT>        params.put(REPLICATION_PARAM, Short.toString(replication));<a name="line.516"></a>
<FONT color="green">517</FONT>        params.put(BLOCKSIZE_PARAM, Long.toString(blockSize));<a name="line.517"></a>
<FONT color="green">518</FONT>        params.put(PERMISSION_PARAM, permissionToString(permission));<a name="line.518"></a>
<FONT color="green">519</FONT>        return uploadData(HTTP_PUT, f, params, bufferSize, HttpURLConnection.HTTP_CREATED);<a name="line.519"></a>
<FONT color="green">520</FONT>      }<a name="line.520"></a>
<FONT color="green">521</FONT>    <a name="line.521"></a>
<FONT color="green">522</FONT>    <a name="line.522"></a>
<FONT color="green">523</FONT>      /**<a name="line.523"></a>
<FONT color="green">524</FONT>       * Append to an existing file (optional operation).<a name="line.524"></a>
<FONT color="green">525</FONT>       * &lt;p/&gt;<a name="line.525"></a>
<FONT color="green">526</FONT>       * IMPORTANT: The &lt;code&gt;Progressable&lt;/code&gt; parameter is not used.<a name="line.526"></a>
<FONT color="green">527</FONT>       *<a name="line.527"></a>
<FONT color="green">528</FONT>       * @param f the existing file to be appended.<a name="line.528"></a>
<FONT color="green">529</FONT>       * @param bufferSize the size of the buffer to be used.<a name="line.529"></a>
<FONT color="green">530</FONT>       * @param progress for reporting progress if it is not null.<a name="line.530"></a>
<FONT color="green">531</FONT>       *<a name="line.531"></a>
<FONT color="green">532</FONT>       * @throws IOException<a name="line.532"></a>
<FONT color="green">533</FONT>       */<a name="line.533"></a>
<FONT color="green">534</FONT>      @Override<a name="line.534"></a>
<FONT color="green">535</FONT>      public FSDataOutputStream append(Path f, int bufferSize, Progressable progress) throws IOException {<a name="line.535"></a>
<FONT color="green">536</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.536"></a>
<FONT color="green">537</FONT>        params.put(OP_PARAM, PostOpValues.APPEND.toString());<a name="line.537"></a>
<FONT color="green">538</FONT>        return uploadData(HTTP_POST, f, params, bufferSize, HttpURLConnection.HTTP_OK);<a name="line.538"></a>
<FONT color="green">539</FONT>      }<a name="line.539"></a>
<FONT color="green">540</FONT>    <a name="line.540"></a>
<FONT color="green">541</FONT>      /**<a name="line.541"></a>
<FONT color="green">542</FONT>       * Renames Path src to Path dst.  Can take place on local fs<a name="line.542"></a>
<FONT color="green">543</FONT>       * or remote DFS.<a name="line.543"></a>
<FONT color="green">544</FONT>       */<a name="line.544"></a>
<FONT color="green">545</FONT>      @Override<a name="line.545"></a>
<FONT color="green">546</FONT>      public boolean rename(Path src, Path dst) throws IOException {<a name="line.546"></a>
<FONT color="green">547</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.547"></a>
<FONT color="green">548</FONT>        params.put(OP_PARAM, PutOpValues.RENAME.toString());<a name="line.548"></a>
<FONT color="green">549</FONT>        params.put(DESTINATION_PARAM, dst.toString());<a name="line.549"></a>
<FONT color="green">550</FONT>        HttpURLConnection conn = getConnection(HTTP_PUT, params, src, true);<a name="line.550"></a>
<FONT color="green">551</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.551"></a>
<FONT color="green">552</FONT>        JSONObject json = (JSONObject) jsonParse(conn);<a name="line.552"></a>
<FONT color="green">553</FONT>        return (Boolean) json.get(RENAME_JSON);<a name="line.553"></a>
<FONT color="green">554</FONT>      }<a name="line.554"></a>
<FONT color="green">555</FONT>    <a name="line.555"></a>
<FONT color="green">556</FONT>      /**<a name="line.556"></a>
<FONT color="green">557</FONT>       * Delete a file.<a name="line.557"></a>
<FONT color="green">558</FONT>       *<a name="line.558"></a>
<FONT color="green">559</FONT>       * @deprecated Use delete(Path, boolean) instead<a name="line.559"></a>
<FONT color="green">560</FONT>       */<a name="line.560"></a>
<FONT color="green">561</FONT>      @SuppressWarnings({"deprecation"})<a name="line.561"></a>
<FONT color="green">562</FONT>      @Deprecated<a name="line.562"></a>
<FONT color="green">563</FONT>      @Override<a name="line.563"></a>
<FONT color="green">564</FONT>      public boolean delete(Path f) throws IOException {<a name="line.564"></a>
<FONT color="green">565</FONT>        return delete(f, false);<a name="line.565"></a>
<FONT color="green">566</FONT>      }<a name="line.566"></a>
<FONT color="green">567</FONT>    <a name="line.567"></a>
<FONT color="green">568</FONT>      /**<a name="line.568"></a>
<FONT color="green">569</FONT>       * Delete a file.<a name="line.569"></a>
<FONT color="green">570</FONT>       *<a name="line.570"></a>
<FONT color="green">571</FONT>       * @param f the path to delete.<a name="line.571"></a>
<FONT color="green">572</FONT>       * @param recursive if path is a directory and set to<a name="line.572"></a>
<FONT color="green">573</FONT>       * true, the directory is deleted else throws an exception. In<a name="line.573"></a>
<FONT color="green">574</FONT>       * case of a file the recursive can be set to either true or false.<a name="line.574"></a>
<FONT color="green">575</FONT>       *<a name="line.575"></a>
<FONT color="green">576</FONT>       * @return true if delete is successful else false.<a name="line.576"></a>
<FONT color="green">577</FONT>       *<a name="line.577"></a>
<FONT color="green">578</FONT>       * @throws IOException<a name="line.578"></a>
<FONT color="green">579</FONT>       */<a name="line.579"></a>
<FONT color="green">580</FONT>      @Override<a name="line.580"></a>
<FONT color="green">581</FONT>      public boolean delete(Path f, boolean recursive) throws IOException {<a name="line.581"></a>
<FONT color="green">582</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.582"></a>
<FONT color="green">583</FONT>        params.put(OP_PARAM, DeleteOpValues.DELETE.toString());<a name="line.583"></a>
<FONT color="green">584</FONT>        params.put(RECURSIVE_PARAM, Boolean.toString(recursive));<a name="line.584"></a>
<FONT color="green">585</FONT>        HttpURLConnection conn = getConnection(HTTP_DELETE, params, f, true);<a name="line.585"></a>
<FONT color="green">586</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.586"></a>
<FONT color="green">587</FONT>        JSONObject json = (JSONObject) jsonParse(conn);<a name="line.587"></a>
<FONT color="green">588</FONT>        return (Boolean) json.get(DELETE_JSON);<a name="line.588"></a>
<FONT color="green">589</FONT>      }<a name="line.589"></a>
<FONT color="green">590</FONT>    <a name="line.590"></a>
<FONT color="green">591</FONT>      /**<a name="line.591"></a>
<FONT color="green">592</FONT>       * List the statuses of the files/directories in the given path if the path is<a name="line.592"></a>
<FONT color="green">593</FONT>       * a directory.<a name="line.593"></a>
<FONT color="green">594</FONT>       *<a name="line.594"></a>
<FONT color="green">595</FONT>       * @param f given path<a name="line.595"></a>
<FONT color="green">596</FONT>       *<a name="line.596"></a>
<FONT color="green">597</FONT>       * @return the statuses of the files/directories in the given patch<a name="line.597"></a>
<FONT color="green">598</FONT>       *<a name="line.598"></a>
<FONT color="green">599</FONT>       * @throws IOException<a name="line.599"></a>
<FONT color="green">600</FONT>       */<a name="line.600"></a>
<FONT color="green">601</FONT>      @Override<a name="line.601"></a>
<FONT color="green">602</FONT>      public FileStatus[] listStatus(Path f) throws IOException {<a name="line.602"></a>
<FONT color="green">603</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.603"></a>
<FONT color="green">604</FONT>        params.put(OP_PARAM, GetOpValues.LISTSTATUS.toString());<a name="line.604"></a>
<FONT color="green">605</FONT>        HttpURLConnection conn = getConnection(HTTP_GET, params, f, true);<a name="line.605"></a>
<FONT color="green">606</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.606"></a>
<FONT color="green">607</FONT>        JSONObject json = (JSONObject) jsonParse(conn);<a name="line.607"></a>
<FONT color="green">608</FONT>        json = (JSONObject) json.get(FILE_STATUSES_JSON);<a name="line.608"></a>
<FONT color="green">609</FONT>        JSONArray jsonArray = (JSONArray) json.get(FILE_STATUS_JSON);<a name="line.609"></a>
<FONT color="green">610</FONT>        FileStatus[] array = new FileStatus[jsonArray.size()];<a name="line.610"></a>
<FONT color="green">611</FONT>        f = makeQualified(f);<a name="line.611"></a>
<FONT color="green">612</FONT>        for (int i = 0; i &lt; jsonArray.size(); i++) {<a name="line.612"></a>
<FONT color="green">613</FONT>          array[i] = createFileStatus(f, (JSONObject) jsonArray.get(i));<a name="line.613"></a>
<FONT color="green">614</FONT>        }<a name="line.614"></a>
<FONT color="green">615</FONT>        return array;<a name="line.615"></a>
<FONT color="green">616</FONT>      }<a name="line.616"></a>
<FONT color="green">617</FONT>    <a name="line.617"></a>
<FONT color="green">618</FONT>      /**<a name="line.618"></a>
<FONT color="green">619</FONT>       * Set the current working directory for the given file system. All relative<a name="line.619"></a>
<FONT color="green">620</FONT>       * paths will be resolved relative to it.<a name="line.620"></a>
<FONT color="green">621</FONT>       *<a name="line.621"></a>
<FONT color="green">622</FONT>       * @param newDir new directory.<a name="line.622"></a>
<FONT color="green">623</FONT>       */<a name="line.623"></a>
<FONT color="green">624</FONT>      @Override<a name="line.624"></a>
<FONT color="green">625</FONT>      public void setWorkingDirectory(Path newDir) {<a name="line.625"></a>
<FONT color="green">626</FONT>        workingDir = newDir;<a name="line.626"></a>
<FONT color="green">627</FONT>      }<a name="line.627"></a>
<FONT color="green">628</FONT>    <a name="line.628"></a>
<FONT color="green">629</FONT>      /**<a name="line.629"></a>
<FONT color="green">630</FONT>       * Get the current working directory for the given file system<a name="line.630"></a>
<FONT color="green">631</FONT>       *<a name="line.631"></a>
<FONT color="green">632</FONT>       * @return the directory pathname<a name="line.632"></a>
<FONT color="green">633</FONT>       */<a name="line.633"></a>
<FONT color="green">634</FONT>      @Override<a name="line.634"></a>
<FONT color="green">635</FONT>      public Path getWorkingDirectory() {<a name="line.635"></a>
<FONT color="green">636</FONT>        if (workingDir == null) {<a name="line.636"></a>
<FONT color="green">637</FONT>          workingDir = getHomeDirectory();<a name="line.637"></a>
<FONT color="green">638</FONT>        }<a name="line.638"></a>
<FONT color="green">639</FONT>        return workingDir;<a name="line.639"></a>
<FONT color="green">640</FONT>      }<a name="line.640"></a>
<FONT color="green">641</FONT>    <a name="line.641"></a>
<FONT color="green">642</FONT>      /**<a name="line.642"></a>
<FONT color="green">643</FONT>       * Make the given file and all non-existent parents into<a name="line.643"></a>
<FONT color="green">644</FONT>       * directories. Has the semantics of Unix 'mkdir -p'.<a name="line.644"></a>
<FONT color="green">645</FONT>       * Existence of the directory hierarchy is not an error.<a name="line.645"></a>
<FONT color="green">646</FONT>       */<a name="line.646"></a>
<FONT color="green">647</FONT>      @Override<a name="line.647"></a>
<FONT color="green">648</FONT>      public boolean mkdirs(Path f, FsPermission permission) throws IOException {<a name="line.648"></a>
<FONT color="green">649</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.649"></a>
<FONT color="green">650</FONT>        params.put(OP_PARAM, PutOpValues.MKDIRS.toString());<a name="line.650"></a>
<FONT color="green">651</FONT>        params.put(PERMISSION_PARAM, permissionToString(permission));<a name="line.651"></a>
<FONT color="green">652</FONT>        HttpURLConnection conn = getConnection(HTTP_PUT, params, f, true);<a name="line.652"></a>
<FONT color="green">653</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.653"></a>
<FONT color="green">654</FONT>        JSONObject json = (JSONObject) jsonParse(conn);<a name="line.654"></a>
<FONT color="green">655</FONT>        return (Boolean) json.get(MKDIRS_JSON);<a name="line.655"></a>
<FONT color="green">656</FONT>      }<a name="line.656"></a>
<FONT color="green">657</FONT>    <a name="line.657"></a>
<FONT color="green">658</FONT>      /**<a name="line.658"></a>
<FONT color="green">659</FONT>       * Return a file status object that represents the path.<a name="line.659"></a>
<FONT color="green">660</FONT>       *<a name="line.660"></a>
<FONT color="green">661</FONT>       * @param f The path we want information from<a name="line.661"></a>
<FONT color="green">662</FONT>       *<a name="line.662"></a>
<FONT color="green">663</FONT>       * @return a FileStatus object<a name="line.663"></a>
<FONT color="green">664</FONT>       *<a name="line.664"></a>
<FONT color="green">665</FONT>       * @throws FileNotFoundException when the path does not exist;<a name="line.665"></a>
<FONT color="green">666</FONT>       * IOException see specific implementation<a name="line.666"></a>
<FONT color="green">667</FONT>       */<a name="line.667"></a>
<FONT color="green">668</FONT>      @Override<a name="line.668"></a>
<FONT color="green">669</FONT>      public FileStatus getFileStatus(Path f) throws IOException {<a name="line.669"></a>
<FONT color="green">670</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.670"></a>
<FONT color="green">671</FONT>        params.put(OP_PARAM, GetOpValues.GETFILESTATUS.toString());<a name="line.671"></a>
<FONT color="green">672</FONT>        HttpURLConnection conn = getConnection(HTTP_GET, params, f, true);<a name="line.672"></a>
<FONT color="green">673</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.673"></a>
<FONT color="green">674</FONT>        JSONObject json = (JSONObject) jsonParse(conn);<a name="line.674"></a>
<FONT color="green">675</FONT>        json = (JSONObject) json.get(FILE_STATUS_JSON);<a name="line.675"></a>
<FONT color="green">676</FONT>        f = makeQualified(f);<a name="line.676"></a>
<FONT color="green">677</FONT>        return createFileStatus(f, json);<a name="line.677"></a>
<FONT color="green">678</FONT>      }<a name="line.678"></a>
<FONT color="green">679</FONT>    <a name="line.679"></a>
<FONT color="green">680</FONT>      /**<a name="line.680"></a>
<FONT color="green">681</FONT>       * Return the current user's home directory in this filesystem.<a name="line.681"></a>
<FONT color="green">682</FONT>       * The default implementation returns "/user/$USER/".<a name="line.682"></a>
<FONT color="green">683</FONT>       */<a name="line.683"></a>
<FONT color="green">684</FONT>      @Override<a name="line.684"></a>
<FONT color="green">685</FONT>      public Path getHomeDirectory() {<a name="line.685"></a>
<FONT color="green">686</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.686"></a>
<FONT color="green">687</FONT>        params.put(OP_PARAM, GetOpValues.GETHOMEDIRECTORY.toString());<a name="line.687"></a>
<FONT color="green">688</FONT>        try {<a name="line.688"></a>
<FONT color="green">689</FONT>          HttpURLConnection conn = getConnection(HTTP_GET, params, new Path(getUri().toString(), "/"), false);<a name="line.689"></a>
<FONT color="green">690</FONT>          validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.690"></a>
<FONT color="green">691</FONT>          JSONObject json = (JSONObject) jsonParse(conn);<a name="line.691"></a>
<FONT color="green">692</FONT>          return new Path((String) json.get(HOME_DIR_JSON));<a name="line.692"></a>
<FONT color="green">693</FONT>        } catch (IOException ex) {<a name="line.693"></a>
<FONT color="green">694</FONT>          throw new RuntimeException(ex);<a name="line.694"></a>
<FONT color="green">695</FONT>        }<a name="line.695"></a>
<FONT color="green">696</FONT>      }<a name="line.696"></a>
<FONT color="green">697</FONT>    <a name="line.697"></a>
<FONT color="green">698</FONT>      /**<a name="line.698"></a>
<FONT color="green">699</FONT>       * Set owner of a path (i.e. a file or a directory).<a name="line.699"></a>
<FONT color="green">700</FONT>       * The parameters username and groupname cannot both be null.<a name="line.700"></a>
<FONT color="green">701</FONT>       *<a name="line.701"></a>
<FONT color="green">702</FONT>       * @param p The path<a name="line.702"></a>
<FONT color="green">703</FONT>       * @param username If it is null, the original username remains unchanged.<a name="line.703"></a>
<FONT color="green">704</FONT>       * @param groupname If it is null, the original groupname remains unchanged.<a name="line.704"></a>
<FONT color="green">705</FONT>       */<a name="line.705"></a>
<FONT color="green">706</FONT>      @Override<a name="line.706"></a>
<FONT color="green">707</FONT>      public void setOwner(Path p, String username, String groupname) throws IOException {<a name="line.707"></a>
<FONT color="green">708</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.708"></a>
<FONT color="green">709</FONT>        params.put(OP_PARAM, PutOpValues.SETOWNER.toString());<a name="line.709"></a>
<FONT color="green">710</FONT>        params.put(OWNER_PARAM, username);<a name="line.710"></a>
<FONT color="green">711</FONT>        params.put(GROUP_PARAM, groupname);<a name="line.711"></a>
<FONT color="green">712</FONT>        HttpURLConnection conn = getConnection(HTTP_PUT, params, p, true);<a name="line.712"></a>
<FONT color="green">713</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.713"></a>
<FONT color="green">714</FONT>      }<a name="line.714"></a>
<FONT color="green">715</FONT>    <a name="line.715"></a>
<FONT color="green">716</FONT>      /**<a name="line.716"></a>
<FONT color="green">717</FONT>       * Set permission of a path.<a name="line.717"></a>
<FONT color="green">718</FONT>       *<a name="line.718"></a>
<FONT color="green">719</FONT>       * @param p path.<a name="line.719"></a>
<FONT color="green">720</FONT>       * @param permission permission.<a name="line.720"></a>
<FONT color="green">721</FONT>       */<a name="line.721"></a>
<FONT color="green">722</FONT>      @Override<a name="line.722"></a>
<FONT color="green">723</FONT>      public void setPermission(Path p, FsPermission permission) throws IOException {<a name="line.723"></a>
<FONT color="green">724</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.724"></a>
<FONT color="green">725</FONT>        params.put(OP_PARAM, PutOpValues.SETPERMISSION.toString());<a name="line.725"></a>
<FONT color="green">726</FONT>        params.put(PERMISSION_PARAM, permissionToString(permission));<a name="line.726"></a>
<FONT color="green">727</FONT>        HttpURLConnection conn = getConnection(HTTP_PUT, params, p, true);<a name="line.727"></a>
<FONT color="green">728</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.728"></a>
<FONT color="green">729</FONT>      }<a name="line.729"></a>
<FONT color="green">730</FONT>    <a name="line.730"></a>
<FONT color="green">731</FONT>      /**<a name="line.731"></a>
<FONT color="green">732</FONT>       * Set access time of a file<a name="line.732"></a>
<FONT color="green">733</FONT>       *<a name="line.733"></a>
<FONT color="green">734</FONT>       * @param p The path<a name="line.734"></a>
<FONT color="green">735</FONT>       * @param mtime Set the modification time of this file.<a name="line.735"></a>
<FONT color="green">736</FONT>       * The number of milliseconds since Jan 1, 1970.<a name="line.736"></a>
<FONT color="green">737</FONT>       * A value of -1 means that this call should not set modification time.<a name="line.737"></a>
<FONT color="green">738</FONT>       * @param atime Set the access time of this file.<a name="line.738"></a>
<FONT color="green">739</FONT>       * The number of milliseconds since Jan 1, 1970.<a name="line.739"></a>
<FONT color="green">740</FONT>       * A value of -1 means that this call should not set access time.<a name="line.740"></a>
<FONT color="green">741</FONT>       */<a name="line.741"></a>
<FONT color="green">742</FONT>      @Override<a name="line.742"></a>
<FONT color="green">743</FONT>      public void setTimes(Path p, long mtime, long atime) throws IOException {<a name="line.743"></a>
<FONT color="green">744</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.744"></a>
<FONT color="green">745</FONT>        params.put(OP_PARAM, PutOpValues.SETTIMES.toString());<a name="line.745"></a>
<FONT color="green">746</FONT>        params.put(MODIFICATION_TIME_PARAM, Long.toString(mtime));<a name="line.746"></a>
<FONT color="green">747</FONT>        params.put(ACCESS_TIME_PARAM, Long.toString(atime));<a name="line.747"></a>
<FONT color="green">748</FONT>        HttpURLConnection conn = getConnection(HTTP_PUT, params, p, true);<a name="line.748"></a>
<FONT color="green">749</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.749"></a>
<FONT color="green">750</FONT>      }<a name="line.750"></a>
<FONT color="green">751</FONT>    <a name="line.751"></a>
<FONT color="green">752</FONT>      /**<a name="line.752"></a>
<FONT color="green">753</FONT>       * Set replication for an existing file.<a name="line.753"></a>
<FONT color="green">754</FONT>       *<a name="line.754"></a>
<FONT color="green">755</FONT>       * @param src file name<a name="line.755"></a>
<FONT color="green">756</FONT>       * @param replication new replication<a name="line.756"></a>
<FONT color="green">757</FONT>       *<a name="line.757"></a>
<FONT color="green">758</FONT>       * @return true if successful;<a name="line.758"></a>
<FONT color="green">759</FONT>       *         false if file does not exist or is a directory<a name="line.759"></a>
<FONT color="green">760</FONT>       *<a name="line.760"></a>
<FONT color="green">761</FONT>       * @throws IOException<a name="line.761"></a>
<FONT color="green">762</FONT>       */<a name="line.762"></a>
<FONT color="green">763</FONT>      @Override<a name="line.763"></a>
<FONT color="green">764</FONT>      public boolean setReplication(Path src, short replication) throws IOException {<a name="line.764"></a>
<FONT color="green">765</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.765"></a>
<FONT color="green">766</FONT>        params.put(OP_PARAM, PutOpValues.SETREPLICATION.toString());<a name="line.766"></a>
<FONT color="green">767</FONT>        params.put(REPLICATION_PARAM, Short.toString(replication));<a name="line.767"></a>
<FONT color="green">768</FONT>        HttpURLConnection conn = getConnection(HTTP_PUT, params, src, true);<a name="line.768"></a>
<FONT color="green">769</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.769"></a>
<FONT color="green">770</FONT>        JSONObject json = (JSONObject) jsonParse(conn);<a name="line.770"></a>
<FONT color="green">771</FONT>        return (Boolean) json.get(SET_REPLICATION_JSON);<a name="line.771"></a>
<FONT color="green">772</FONT>      }<a name="line.772"></a>
<FONT color="green">773</FONT>    <a name="line.773"></a>
<FONT color="green">774</FONT>      /**<a name="line.774"></a>
<FONT color="green">775</FONT>       * Creates a &lt;code&gt;FileStatus&lt;/code&gt; object using a JSON file-status payload<a name="line.775"></a>
<FONT color="green">776</FONT>       * received from a HttpFSServer server.<a name="line.776"></a>
<FONT color="green">777</FONT>       *<a name="line.777"></a>
<FONT color="green">778</FONT>       * @param json a JSON file-status payload received from a HttpFSServer server<a name="line.778"></a>
<FONT color="green">779</FONT>       *<a name="line.779"></a>
<FONT color="green">780</FONT>       * @return the corresponding &lt;code&gt;FileStatus&lt;/code&gt;<a name="line.780"></a>
<FONT color="green">781</FONT>       */<a name="line.781"></a>
<FONT color="green">782</FONT>      private FileStatus createFileStatus(Path parent, JSONObject json) {<a name="line.782"></a>
<FONT color="green">783</FONT>        String pathSuffix = (String) json.get(PATH_SUFFIX_JSON);<a name="line.783"></a>
<FONT color="green">784</FONT>        Path path = (pathSuffix.equals("")) ? parent : new Path(parent, pathSuffix);<a name="line.784"></a>
<FONT color="green">785</FONT>        FILE_TYPE type = FILE_TYPE.valueOf((String) json.get(TYPE_JSON));<a name="line.785"></a>
<FONT color="green">786</FONT>        long len = (Long) json.get(LENGTH_JSON);<a name="line.786"></a>
<FONT color="green">787</FONT>        String owner = (String) json.get(OWNER_JSON);<a name="line.787"></a>
<FONT color="green">788</FONT>        String group = (String) json.get(GROUP_JSON);<a name="line.788"></a>
<FONT color="green">789</FONT>        FsPermission permission =<a name="line.789"></a>
<FONT color="green">790</FONT>          new FsPermission(Short.parseShort((String) json.get(PERMISSION_JSON), 8));<a name="line.790"></a>
<FONT color="green">791</FONT>        long aTime = (Long) json.get(ACCESS_TIME_JSON);<a name="line.791"></a>
<FONT color="green">792</FONT>        long mTime = (Long) json.get(MODIFICATION_TIME_JSON);<a name="line.792"></a>
<FONT color="green">793</FONT>        long blockSize = (Long) json.get(BLOCK_SIZE_JSON);<a name="line.793"></a>
<FONT color="green">794</FONT>        short replication = ((Long) json.get(REPLICATION_JSON)).shortValue();<a name="line.794"></a>
<FONT color="green">795</FONT>        FileStatus fileStatus = null;<a name="line.795"></a>
<FONT color="green">796</FONT>    <a name="line.796"></a>
<FONT color="green">797</FONT>        switch (type) {<a name="line.797"></a>
<FONT color="green">798</FONT>          case FILE:<a name="line.798"></a>
<FONT color="green">799</FONT>          case DIRECTORY:<a name="line.799"></a>
<FONT color="green">800</FONT>            fileStatus = new FileStatus(len, (type == FILE_TYPE.DIRECTORY),<a name="line.800"></a>
<FONT color="green">801</FONT>                                        replication, blockSize, mTime, aTime,<a name="line.801"></a>
<FONT color="green">802</FONT>                                        permission, owner, group, path);<a name="line.802"></a>
<FONT color="green">803</FONT>            break;<a name="line.803"></a>
<FONT color="green">804</FONT>          case SYMLINK:<a name="line.804"></a>
<FONT color="green">805</FONT>            Path symLink = null;<a name="line.805"></a>
<FONT color="green">806</FONT>            fileStatus = new FileStatus(len, false,<a name="line.806"></a>
<FONT color="green">807</FONT>                                        replication, blockSize, mTime, aTime,<a name="line.807"></a>
<FONT color="green">808</FONT>                                        permission, owner, group, symLink,<a name="line.808"></a>
<FONT color="green">809</FONT>                                        path);<a name="line.809"></a>
<FONT color="green">810</FONT>        }<a name="line.810"></a>
<FONT color="green">811</FONT>        return fileStatus;<a name="line.811"></a>
<FONT color="green">812</FONT>      }<a name="line.812"></a>
<FONT color="green">813</FONT>    <a name="line.813"></a>
<FONT color="green">814</FONT>      @Override<a name="line.814"></a>
<FONT color="green">815</FONT>      public ContentSummary getContentSummary(Path f) throws IOException {<a name="line.815"></a>
<FONT color="green">816</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.816"></a>
<FONT color="green">817</FONT>        params.put(OP_PARAM, GetOpValues.GETCONTENTSUMMARY.toString());<a name="line.817"></a>
<FONT color="green">818</FONT>        HttpURLConnection conn = getConnection(HTTP_GET, params, f, true);<a name="line.818"></a>
<FONT color="green">819</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.819"></a>
<FONT color="green">820</FONT>        JSONObject json = (JSONObject) ((JSONObject) jsonParse(conn)).get(CONTENT_SUMMARY_JSON);<a name="line.820"></a>
<FONT color="green">821</FONT>        return new ContentSummary((Long) json.get(CONTENT_SUMMARY_LENGTH_JSON),<a name="line.821"></a>
<FONT color="green">822</FONT>                                  (Long) json.get(CONTENT_SUMMARY_FILE_COUNT_JSON),<a name="line.822"></a>
<FONT color="green">823</FONT>                                  (Long) json.get(CONTENT_SUMMARY_DIRECTORY_COUNT_JSON),<a name="line.823"></a>
<FONT color="green">824</FONT>                                  (Long) json.get(CONTENT_SUMMARY_QUOTA_JSON),<a name="line.824"></a>
<FONT color="green">825</FONT>                                  (Long) json.get(CONTENT_SUMMARY_SPACE_CONSUMED_JSON),<a name="line.825"></a>
<FONT color="green">826</FONT>                                  (Long) json.get(CONTENT_SUMMARY_SPACE_QUOTA_JSON)<a name="line.826"></a>
<FONT color="green">827</FONT>        );<a name="line.827"></a>
<FONT color="green">828</FONT>      }<a name="line.828"></a>
<FONT color="green">829</FONT>    <a name="line.829"></a>
<FONT color="green">830</FONT>      @Override<a name="line.830"></a>
<FONT color="green">831</FONT>      public FileChecksum getFileChecksum(Path f) throws IOException {<a name="line.831"></a>
<FONT color="green">832</FONT>        Map&lt;String, String&gt; params = new HashMap&lt;String, String&gt;();<a name="line.832"></a>
<FONT color="green">833</FONT>        params.put(OP_PARAM, GetOpValues.GETFILECHECKSUM.toString());<a name="line.833"></a>
<FONT color="green">834</FONT>        HttpURLConnection conn = getConnection(HTTP_GET, params, f, true);<a name="line.834"></a>
<FONT color="green">835</FONT>        validateResponse(conn, HttpURLConnection.HTTP_OK);<a name="line.835"></a>
<FONT color="green">836</FONT>        final JSONObject json = (JSONObject) ((JSONObject) jsonParse(conn)).get(FILE_CHECKSUM_JSON);<a name="line.836"></a>
<FONT color="green">837</FONT>        return new FileChecksum() {<a name="line.837"></a>
<FONT color="green">838</FONT>          @Override<a name="line.838"></a>
<FONT color="green">839</FONT>          public String getAlgorithmName() {<a name="line.839"></a>
<FONT color="green">840</FONT>            return (String) json.get(CHECKSUM_ALGORITHM_JSON);<a name="line.840"></a>
<FONT color="green">841</FONT>          }<a name="line.841"></a>
<FONT color="green">842</FONT>    <a name="line.842"></a>
<FONT color="green">843</FONT>          @Override<a name="line.843"></a>
<FONT color="green">844</FONT>          public int getLength() {<a name="line.844"></a>
<FONT color="green">845</FONT>            return ((Long) json.get(CHECKSUM_LENGTH_JSON)).intValue();<a name="line.845"></a>
<FONT color="green">846</FONT>          }<a name="line.846"></a>
<FONT color="green">847</FONT>    <a name="line.847"></a>
<FONT color="green">848</FONT>          @Override<a name="line.848"></a>
<FONT color="green">849</FONT>          public byte[] getBytes() {<a name="line.849"></a>
<FONT color="green">850</FONT>            return StringUtils.hexStringToByte((String) json.get(CHECKSUM_BYTES_JSON));<a name="line.850"></a>
<FONT color="green">851</FONT>          }<a name="line.851"></a>
<FONT color="green">852</FONT>    <a name="line.852"></a>
<FONT color="green">853</FONT>          @Override<a name="line.853"></a>
<FONT color="green">854</FONT>          public void write(DataOutput out) throws IOException {<a name="line.854"></a>
<FONT color="green">855</FONT>            throw new UnsupportedOperationException();<a name="line.855"></a>
<FONT color="green">856</FONT>          }<a name="line.856"></a>
<FONT color="green">857</FONT>    <a name="line.857"></a>
<FONT color="green">858</FONT>          @Override<a name="line.858"></a>
<FONT color="green">859</FONT>          public void readFields(DataInput in) throws IOException {<a name="line.859"></a>
<FONT color="green">860</FONT>            throw new UnsupportedOperationException();<a name="line.860"></a>
<FONT color="green">861</FONT>          }<a name="line.861"></a>
<FONT color="green">862</FONT>        };<a name="line.862"></a>
<FONT color="green">863</FONT>      }<a name="line.863"></a>
<FONT color="green">864</FONT>    <a name="line.864"></a>
<FONT color="green">865</FONT>    }<a name="line.865"></a>




























































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