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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span>// $Id: XmlaOlap4jHttpProxy.java 482 2012-01-05 23:27:27Z jhyde $<a name="line.2"></a>
<span class="sourceLineNo">003</span>//<a name="line.3"></a>
<span class="sourceLineNo">004</span>// Licensed to Julian Hyde under one or more contributor license<a name="line.4"></a>
<span class="sourceLineNo">005</span>// agreements. See the NOTICE file distributed with this work for<a name="line.5"></a>
<span class="sourceLineNo">006</span>// additional information regarding copyright ownership.<a name="line.6"></a>
<span class="sourceLineNo">007</span>//<a name="line.7"></a>
<span class="sourceLineNo">008</span>// Julian Hyde licenses this file to you under the Apache License,<a name="line.8"></a>
<span class="sourceLineNo">009</span>// Version 2.0 (the "License"); you may not use this file except in<a name="line.9"></a>
<span class="sourceLineNo">010</span>// compliance with the License. You may obtain a copy of the License at:<a name="line.10"></a>
<span class="sourceLineNo">011</span>//<a name="line.11"></a>
<span class="sourceLineNo">012</span>// http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a>
<span class="sourceLineNo">013</span>//<a name="line.13"></a>
<span class="sourceLineNo">014</span>// Unless required by applicable law or agreed to in writing, software<a name="line.14"></a>
<span class="sourceLineNo">015</span>// distributed under the License is distributed on an "AS IS" BASIS,<a name="line.15"></a>
<span class="sourceLineNo">016</span>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.16"></a>
<span class="sourceLineNo">017</span>// See the License for the specific language governing permissions and<a name="line.17"></a>
<span class="sourceLineNo">018</span>// limitations under the License.<a name="line.18"></a>
<span class="sourceLineNo">019</span>*/<a name="line.19"></a>
<span class="sourceLineNo">020</span>package org.olap4j.driver.xmla.proxy;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.olap4j.driver.xmla.XmlaOlap4jDriver;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.olap4j.driver.xmla.XmlaOlap4jServerInfos;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.olap4j.impl.Base64;<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.io.*;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.net.*;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.Future;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>/**<a name="line.30"></a>
<span class="sourceLineNo">031</span> * Extends the AbstractCachedProxy and serves as<a name="line.31"></a>
<span class="sourceLineNo">032</span> * a production ready http communication class. Every SOAP request<a name="line.32"></a>
<span class="sourceLineNo">033</span> * sends a POST call to the destination XMLA server and returns<a name="line.33"></a>
<span class="sourceLineNo">034</span> * the response as a byte array, conforming to the Proxy interface.<a name="line.34"></a>
<span class="sourceLineNo">035</span> *<a name="line.35"></a>
<span class="sourceLineNo">036</span> * <p>It also takes advantage of the AbstractHttpProxy cookie<a name="line.36"></a>
<span class="sourceLineNo">037</span> * managing facilities. All cookies received from the end point<a name="line.37"></a>
<span class="sourceLineNo">038</span> * server will be sent back if they are not expired and they also<a name="line.38"></a>
<span class="sourceLineNo">039</span> * conform to cookie domain rules.<a name="line.39"></a>
<span class="sourceLineNo">040</span> *<a name="line.40"></a>
<span class="sourceLineNo">041</span> * @author Luc Boudreau and Julian Hyde<a name="line.41"></a>
<span class="sourceLineNo">042</span> * @version $Id: XmlaOlap4jHttpProxy.java 482 2012-01-05 23:27:27Z jhyde $<a name="line.42"></a>
<span class="sourceLineNo">043</span> */<a name="line.43"></a>
<span class="sourceLineNo">044</span>public class XmlaOlap4jHttpProxy extends XmlaOlap4jAbstractHttpProxy<a name="line.44"></a>
<span class="sourceLineNo">045</span>{<a name="line.45"></a>
<span class="sourceLineNo">046</span> private final XmlaOlap4jDriver driver;<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span> /**<a name="line.48"></a>
<span class="sourceLineNo">049</span> * Creates a XmlaOlap4jHttpProxy.<a name="line.49"></a>
<span class="sourceLineNo">050</span> *<a name="line.50"></a>
<span class="sourceLineNo">051</span> * @param driver Driver<a name="line.51"></a>
<span class="sourceLineNo">052</span> */<a name="line.52"></a>
<span class="sourceLineNo">053</span> public XmlaOlap4jHttpProxy(<a name="line.53"></a>
<span class="sourceLineNo">054</span> XmlaOlap4jDriver driver)<a name="line.54"></a>
<span class="sourceLineNo">055</span> {<a name="line.55"></a>
<span class="sourceLineNo">056</span> this.driver = driver;<a name="line.56"></a>
<span class="sourceLineNo">057</span> }<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span> private static final String DISCOVER =<a name="line.59"></a>
<span class="sourceLineNo">060</span> "<Discover xmlns=\"urn:schemas-microsoft-com:xml-analysis\"";<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> private static final String EXECUTE =<a name="line.62"></a>
<span class="sourceLineNo">063</span> "<Execute xmlns=\"urn:schemas-microsoft-com:xml-analysis\"";<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span> @Override<a name="line.65"></a>
<span class="sourceLineNo">066</span> public byte[] getResponse(XmlaOlap4jServerInfos serverInfos, String request)<a name="line.66"></a>
<span class="sourceLineNo">067</span> throws XmlaOlap4jProxyException<a name="line.67"></a>
<span class="sourceLineNo">068</span> {<a name="line.68"></a>
<span class="sourceLineNo">069</span> URLConnection urlConnection = null;<a name="line.69"></a>
<span class="sourceLineNo">070</span> try {<a name="line.70"></a>
<span class="sourceLineNo">071</span> URL url = serverInfos.getUrl();<a name="line.71"></a>
<span class="sourceLineNo">072</span> // Open connection to manipulate the properties<a name="line.72"></a>
<span class="sourceLineNo">073</span> urlConnection = url.openConnection();<a name="line.73"></a>
<span class="sourceLineNo">074</span> urlConnection.setDoOutput(true);<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> // Set headers<a name="line.76"></a>
<span class="sourceLineNo">077</span> urlConnection.setRequestProperty(<a name="line.77"></a>
<span class="sourceLineNo">078</span> "content-type",<a name="line.78"></a>
<span class="sourceLineNo">079</span> "text/xml");<a name="line.79"></a>
<span class="sourceLineNo">080</span> urlConnection.setRequestProperty(<a name="line.80"></a>
<span class="sourceLineNo">081</span> "User-Agent",<a name="line.81"></a>
<span class="sourceLineNo">082</span> "Olap4j("<a name="line.82"></a>
<span class="sourceLineNo">083</span> .concat(driver.getVersion())<a name="line.83"></a>
<span class="sourceLineNo">084</span> .concat(")"));<a name="line.84"></a>
<span class="sourceLineNo">085</span> urlConnection.setRequestProperty(<a name="line.85"></a>
<span class="sourceLineNo">086</span> "Accept",<a name="line.86"></a>
<span class="sourceLineNo">087</span> "text/xml;q=1");<a name="line.87"></a>
<span class="sourceLineNo">088</span> urlConnection.setRequestProperty(<a name="line.88"></a>
<span class="sourceLineNo">089</span> "Accept-Charset",<a name="line.89"></a>
<span class="sourceLineNo">090</span> getEncodingCharsetName()<a name="line.90"></a>
<span class="sourceLineNo">091</span> .concat(";q=1"));<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span> // Some servers expect a SOAPAction header.<a name="line.93"></a>
<span class="sourceLineNo">094</span> // TODO There is bound to be a better way to do this.<a name="line.94"></a>
<span class="sourceLineNo">095</span> if (request.contains(DISCOVER)) {<a name="line.95"></a>
<span class="sourceLineNo">096</span> urlConnection.setRequestProperty(<a name="line.96"></a>
<span class="sourceLineNo">097</span> "SOAPAction",<a name="line.97"></a>
<span class="sourceLineNo">098</span> "\"urn:schemas-microsoft-com:xml-analysis:Discover\"");<a name="line.98"></a>
<span class="sourceLineNo">099</span> } else if (request.contains(EXECUTE)) {<a name="line.99"></a>
<span class="sourceLineNo">100</span> urlConnection.setRequestProperty(<a name="line.100"></a>
<span class="sourceLineNo">101</span> "SOAPAction",<a name="line.101"></a>
<span class="sourceLineNo">102</span> "\"urn:schemas-microsoft-com:xml-analysis:Execute\"");<a name="line.102"></a>
<span class="sourceLineNo">103</span> }<a name="line.103"></a>
<span class="sourceLineNo">104</span><a name="line.104"></a>
<span class="sourceLineNo">105</span> // Encode credentials for basic authentication<a name="line.105"></a>
<span class="sourceLineNo">106</span> StringBuilder sb = new StringBuilder();<a name="line.106"></a>
<span class="sourceLineNo">107</span> if (serverInfos.getUsername() != null<a name="line.107"></a>
<span class="sourceLineNo">108</span> && serverInfos.getPassword() != null)<a name="line.108"></a>
<span class="sourceLineNo">109</span> {<a name="line.109"></a>
<span class="sourceLineNo">110</span> sb.append(serverInfos.getUsername());<a name="line.110"></a>
<span class="sourceLineNo">111</span> sb.append(":");<a name="line.111"></a>
<span class="sourceLineNo">112</span> sb.append(serverInfos.getPassword());<a name="line.112"></a>
<span class="sourceLineNo">113</span> } else if (url.getUserInfo() != null) {<a name="line.113"></a>
<span class="sourceLineNo">114</span> sb.append(url.getUserInfo());<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span> if (!sb.toString().equals("")) {<a name="line.116"></a>
<span class="sourceLineNo">117</span> String encoding =<a name="line.117"></a>
<span class="sourceLineNo">118</span> Base64.encodeBytes(<a name="line.118"></a>
<span class="sourceLineNo">119</span> sb.toString().getBytes(), 0);<a name="line.119"></a>
<span class="sourceLineNo">120</span> urlConnection.setRequestProperty(<a name="line.120"></a>
<span class="sourceLineNo">121</span> "Authorization", "Basic " + encoding);<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span> // Set correct cookies<a name="line.124"></a>
<span class="sourceLineNo">125</span> this.useCookies(urlConnection);<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span> // Send data (i.e. POST). Use same encoding as specified in the<a name="line.127"></a>
<span class="sourceLineNo">128</span> // header.<a name="line.128"></a>
<span class="sourceLineNo">129</span> final String encoding = getEncodingCharsetName();<a name="line.129"></a>
<span class="sourceLineNo">130</span> urlConnection.getOutputStream().write(request.getBytes(encoding));<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span> // Get the response, again assuming default encoding.<a name="line.132"></a>
<span class="sourceLineNo">133</span> InputStream is = urlConnection.getInputStream();<a name="line.133"></a>
<span class="sourceLineNo">134</span> final ByteArrayOutputStream baos = new ByteArrayOutputStream();<a name="line.134"></a>
<span class="sourceLineNo">135</span> byte[] buf = new byte[1024];<a name="line.135"></a>
<span class="sourceLineNo">136</span> int count;<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span> while ((count = is.read(buf)) > 0) {<a name="line.138"></a>
<span class="sourceLineNo">139</span> baos.write(buf, 0, count);<a name="line.139"></a>
<span class="sourceLineNo">140</span> }<a name="line.140"></a>
<span class="sourceLineNo">141</span><a name="line.141"></a>
<span class="sourceLineNo">142</span> // Save the returned cookies for later use<a name="line.142"></a>
<span class="sourceLineNo">143</span> this.saveCookies(urlConnection);<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span> return baos.toByteArray();<a name="line.145"></a>
<span class="sourceLineNo">146</span> // All exceptions should be trapped here.<a name="line.146"></a>
<span class="sourceLineNo">147</span> // The response will only be available here anyways.<a name="line.147"></a>
<span class="sourceLineNo">148</span> } catch (Exception e) {<a name="line.148"></a>
<span class="sourceLineNo">149</span> // In order to prevent the JDK from keeping this connection<a name="line.149"></a>
<span class="sourceLineNo">150</span> // in WAIT mode, we need to empty the error stream cache.<a name="line.150"></a>
<span class="sourceLineNo">151</span> try {<a name="line.151"></a>
<span class="sourceLineNo">152</span> final int espCode =<a name="line.152"></a>
<span class="sourceLineNo">153</span> ((HttpURLConnection)urlConnection).getResponseCode();<a name="line.153"></a>
<span class="sourceLineNo">154</span> InputStream errorStream =<a name="line.154"></a>
<span class="sourceLineNo">155</span> ((HttpURLConnection)urlConnection).getErrorStream();<a name="line.155"></a>
<span class="sourceLineNo">156</span> final ByteArrayOutputStream baos =<a name="line.156"></a>
<span class="sourceLineNo">157</span> new ByteArrayOutputStream();<a name="line.157"></a>
<span class="sourceLineNo">158</span> final byte[] buf = new byte[1024];<a name="line.158"></a>
<span class="sourceLineNo">159</span> int count;<a name="line.159"></a>
<span class="sourceLineNo">160</span> if (errorStream != null) {<a name="line.160"></a>
<span class="sourceLineNo">161</span> while ((count = errorStream.read(buf)) > 0) {<a name="line.161"></a>
<span class="sourceLineNo">162</span> baos.write(buf, 0, count);<a name="line.162"></a>
<span class="sourceLineNo">163</span> }<a name="line.163"></a>
<span class="sourceLineNo">164</span> errorStream.close();<a name="line.164"></a>
<span class="sourceLineNo">165</span> }<a name="line.165"></a>
<span class="sourceLineNo">166</span> baos.close();<a name="line.166"></a>
<span class="sourceLineNo">167</span> } catch (IOException ex) {<a name="line.167"></a>
<span class="sourceLineNo">168</span> // Well, we tried. No point notifying the user here.<a name="line.168"></a>
<span class="sourceLineNo">169</span> }<a name="line.169"></a>
<span class="sourceLineNo">170</span> throw new XmlaOlap4jProxyException(<a name="line.170"></a>
<span class="sourceLineNo">171</span> "This proxy encountered an exception while processing the "<a name="line.171"></a>
<span class="sourceLineNo">172</span> + "query.",<a name="line.172"></a>
<span class="sourceLineNo">173</span> e);<a name="line.173"></a>
<span class="sourceLineNo">174</span> }<a name="line.174"></a>
<span class="sourceLineNo">175</span> }<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span> @Override<a name="line.177"></a>
<span class="sourceLineNo">178</span> public Future<byte[]> getResponseViaSubmit(<a name="line.178"></a>
<span class="sourceLineNo">179</span> final XmlaOlap4jServerInfos serverInfos,<a name="line.179"></a>
<span class="sourceLineNo">180</span> final String request)<a name="line.180"></a>
<span class="sourceLineNo">181</span> {<a name="line.181"></a>
<span class="sourceLineNo">182</span> return XmlaOlap4jDriver.getFuture(this, serverInfos, request);<a name="line.182"></a>
<span class="sourceLineNo">183</span> }<a name="line.183"></a>
<span class="sourceLineNo">184</span><a name="line.184"></a>
<span class="sourceLineNo">185</span> // implement XmlaOlap4jProxy<a name="line.185"></a>
<span class="sourceLineNo">186</span> public String getEncodingCharsetName() {<a name="line.186"></a>
<span class="sourceLineNo">187</span> return "UTF-8";<a name="line.187"></a>
<span class="sourceLineNo">188</span> }<a name="line.188"></a>
<span class="sourceLineNo">189</span>}<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span>// End XmlaOlap4jHttpProxy.java<a name="line.191"></a>
<span class="sourceLineNo">192</span><a name="line.192"></a>
<span class="sourceLineNo">193</span><a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
</pre>
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