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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span>package org.apache.logging.log4j.spi;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.util.Collections;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.HashMap;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Map;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.logging.log4j.util.BiConsumer;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.logging.log4j.util.ReadOnlyStringMap;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.logging.log4j.util.PropertiesUtil;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.logging.log4j.util.TriConsumer;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>/**<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * The actual ThreadContext Map. A new ThreadContext Map is created each time it is updated and the Map stored is always<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * immutable. This means the Map can be passed to other threads without concern that it will be updated. Since it is<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * expected that the Map will be passed to many more log events than the number of keys it contains the performance<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * should be much better than if the Map was copied for each event.<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> */<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>public class DefaultThreadContextMap implements ThreadContextMap, ReadOnlyStringMap {<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> private static final long serialVersionUID = 8218007901108944053L;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> /**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Property name ({@value} ) for selecting {@code InheritableThreadLocal} (value "true") or plain<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * {@code ThreadLocal} (value is not "true") in the implementation.<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> */<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> public static final String INHERITABLE_MAP = "isThreadContextMapInheritable";<a name="line.41"></a> |
| <span class="sourceLineNo">042</span><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> private final boolean useMap;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private final ThreadLocal<Map<String, String>> localMap;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> private static boolean inheritableMap;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> <a name="line.47"></a> |
| <span class="sourceLineNo">048</span> static {<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> init();<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> }<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> // LOG4J2-479: by default, use a plain ThreadLocal, only use InheritableThreadLocal if configured.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> // (This method is package protected for JUnit tests.)<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> static ThreadLocal<Map<String, String>> createThreadLocalMap(final boolean isMapEnabled) {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> if (inheritableMap) {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> return new InheritableThreadLocal<Map<String, String>>() {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> @Override<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> protected Map<String, String> childValue(final Map<String, String> parentValue) {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> return parentValue != null && isMapEnabled //<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> ? Collections.unmodifiableMap(new HashMap<>(parentValue)) //<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> : null;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> };<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> // if not inheritable, return plain ThreadLocal with null as initial value<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> return new ThreadLocal<>();<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> static void init() {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> inheritableMap = PropertiesUtil.getProperties().getBooleanProperty(INHERITABLE_MAP);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> <a name="line.72"></a> |
| <span class="sourceLineNo">073</span> public DefaultThreadContextMap() {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> this(true);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> public DefaultThreadContextMap(final boolean useMap) {<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> this.useMap = useMap;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> this.localMap = createThreadLocalMap(useMap);<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> }<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> @Override<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> public void put(final String key, final String value) {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> if (!useMap) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> return;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> }<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> Map<String, String> map = localMap.get();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> map = map == null ? new HashMap<String, String>(1) : new HashMap<>(map);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> map.put(key, value);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> localMap.set(Collections.unmodifiableMap(map));<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> public void putAll(final Map<String, String> m) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> if (!useMap) {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> return;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> Map<String, String> map = localMap.get();<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> map = map == null ? new HashMap<String, String>(m.size()) : new HashMap<>(map);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> for (final Map.Entry<String, String> e : m.entrySet()) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> map.put(e.getKey(), e.getValue());<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> }<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> localMap.set(Collections.unmodifiableMap(map));<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> @Override<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> public String get(final String key) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> final Map<String, String> map = localMap.get();<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> return map == null ? null : map.get(key);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> @Override<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> public void remove(final String key) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> final Map<String, String> map = localMap.get();<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> if (map != null) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> final Map<String, String> copy = new HashMap<>(map);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> copy.remove(key);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> localMap.set(Collections.unmodifiableMap(copy));<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> public void removeAll(final Iterable<String> keys) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> final Map<String, String> map = localMap.get();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> if (map != null) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> final Map<String, String> copy = new HashMap<>(map);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> for (final String key : keys) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> copy.remove(key);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> localMap.set(Collections.unmodifiableMap(copy));<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> @Override<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> public void clear() {<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> localMap.remove();<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> }<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> @Override<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> public Map<String, String> toMap() {<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> return getCopy();<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> @Override<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> public boolean containsKey(final String key) {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> final Map<String, String> map = localMap.get();<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> return map != null && map.containsKey(key);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> @Override<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public <V> void forEach(final BiConsumer<String, ? super V> action) {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> final Map<String, String> map = localMap.get();<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> if (map == null) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> return;<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> for (final Map.Entry<String, String> entry : map.entrySet()) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> //BiConsumer should be able to handle values of any type V. In our case the values are of type String.<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> @SuppressWarnings("unchecked")<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> final<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> V value = (V) entry.getValue();<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> action.accept(entry.getKey(), value);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> @Override<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> public <V, S> void forEach(final TriConsumer<String, ? super V, S> action, final S state) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> final Map<String, String> map = localMap.get();<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> if (map == null) {<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> return;<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> }<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> for (final Map.Entry<String, String> entry : map.entrySet()) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> //TriConsumer should be able to handle values of any type V. In our case the values are of type String.<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> @SuppressWarnings("unchecked")<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> final<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> V value = (V) entry.getValue();<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> action.accept(entry.getKey(), value, state);<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><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> @SuppressWarnings("unchecked")<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> @Override<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> public <V> V getValue(final String key) {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> final Map<String, String> map = localMap.get();<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> return (V) (map == null ? null : map.get(key));<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> @Override<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> public Map<String, String> getCopy() {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> final Map<String, String> map = localMap.get();<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> return map == null ? new HashMap<String, String>() : new HashMap<>(map);<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> @Override<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> public Map<String, String> getImmutableMapOrNull() {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> return localMap.get();<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> @Override<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> public boolean isEmpty() {<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> final Map<String, String> map = localMap.get();<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return map == null || map.size() == 0;<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> @Override<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> public int size() {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> final Map<String, String> map = localMap.get();<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> return map == null ? 0 : map.size();<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> }<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> @Override<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> public String toString() {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> final Map<String, String> map = localMap.get();<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> return map == null ? "{}" : map.toString();<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> }<a name="line.212"></a> |
| <span class="sourceLineNo">213</span><a name="line.213"></a> |
| <span class="sourceLineNo">214</span> @Override<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> public int hashCode() {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> final int prime = 31;<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> int result = 1;<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> final Map<String, String> map = this.localMap.get();<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> result = prime * result + ((map == null) ? 0 : map.hashCode());<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> result = prime * result + Boolean.valueOf(this.useMap).hashCode();<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> return result;<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> @Override<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> public boolean equals(final Object obj) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> if (this == obj) {<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> return true;<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> if (obj == null) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> return false;<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> }<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> if (obj instanceof DefaultThreadContextMap) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> final DefaultThreadContextMap other = (DefaultThreadContextMap) obj;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> if (this.useMap != other.useMap) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> return false;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> }<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> if (!(obj instanceof ThreadContextMap)) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> return false;<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> final ThreadContextMap other = (ThreadContextMap) obj;<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> final Map<String, String> map = this.localMap.get();<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> final Map<String, String> otherMap = other.getImmutableMapOrNull();<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> if (map == null) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> if (otherMap != null) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> return false;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> } else if (!map.equals(otherMap)) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> return false;<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return true;<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span>}<a name="line.253"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |