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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.core.appender.db.jpa.converter;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.io.IOException;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.Iterator;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Map;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import javax.persistence.AttributeConverter;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import javax.persistence.Converter;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import javax.persistence.PersistenceException;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.logging.log4j.util.ReadOnlyStringMap;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.logging.log4j.core.impl.ContextDataFactory;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.logging.log4j.util.StringMap;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.logging.log4j.util.BiConsumer;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.logging.log4j.util.Strings;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span><a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import com.fasterxml.jackson.databind.JsonNode;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import com.fasterxml.jackson.databind.ObjectMapper;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import com.fasterxml.jackson.databind.node.JsonNodeFactory;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import com.fasterxml.jackson.databind.node.ObjectNode;<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> * A JPA 2.1 attribute converter for {@link ReadOnlyStringMap}s in<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * {@link org.apache.logging.log4j.core.LogEvent}s. This converter is capable of converting both to and from<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * {@link String}s.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> *<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * In addition to other optional dependencies required by the JPA appender, this converter requires the Jackson Data<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Processor.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>@Converter(autoApply = false)<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>public class ContextDataJsonAttributeConverter implements AttributeConverter<ReadOnlyStringMap, String> {<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> @Override<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> public String convertToDatabaseColumn(final ReadOnlyStringMap contextData) {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> if (contextData == null) {<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> return null;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> }<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> try {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> final JsonNodeFactory factory = OBJECT_MAPPER.getNodeFactory();<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> final ObjectNode root = factory.objectNode();<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> contextData.forEach(new BiConsumer<String, Object>() {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> @Override<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> public void accept(final String key, final Object value) {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> // we will cheat here and write the toString of the Object... meh, but ok.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> root.put(key, String.valueOf(value));<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> return OBJECT_MAPPER.writeValueAsString(root);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> } catch (final Exception e) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> throw new PersistenceException("Failed to convert contextData to JSON string.", e);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> }<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> @Override<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> public ReadOnlyStringMap convertToEntityAttribute(final String s) {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> if (Strings.isEmpty(s)) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> return null;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> try {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> final StringMap result = ContextDataFactory.createContextData();<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> final ObjectNode root = (ObjectNode) OBJECT_MAPPER.readTree(s);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> final Iterator<Map.Entry<String, JsonNode>> entries = root.fields();<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> while (entries.hasNext()) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> final Map.Entry<String, JsonNode> entry = entries.next();<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> // Don't know what to do with non-text values.<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> // Maybe users who need this need to provide custom converter?<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> final Object value = entry.getValue().textValue();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> result.putValue(entry.getKey(), value);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> return result;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> } catch (final IOException e) {<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> throw new PersistenceException("Failed to convert JSON string to map.", e);<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>}<a name="line.93"></a> |
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