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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 or more<a name="line.2"></a> |
| <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <FONT color="green">008</FONT> *<a name="line.8"></a> |
| <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <FONT color="green">010</FONT> *<a name="line.10"></a> |
| <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <FONT color="green">014</FONT> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <FONT color="green">015</FONT> * limitations under the license.<a name="line.15"></a> |
| <FONT color="green">016</FONT> */<a name="line.16"></a> |
| <FONT color="green">017</FONT> package org.apache.logging.log4j.core.lookup;<a name="line.17"></a> |
| <FONT color="green">018</FONT> <a name="line.18"></a> |
| <FONT color="green">019</FONT> import org.apache.logging.log4j.core.LogEvent;<a name="line.19"></a> |
| <FONT color="green">020</FONT> import org.apache.logging.log4j.core.config.plugins.Plugin;<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> /**<a name="line.22"></a> |
| <FONT color="green">023</FONT> * Looks up keys from environment variables.<a name="line.23"></a> |
| <FONT color="green">024</FONT> */<a name="line.24"></a> |
| <FONT color="green">025</FONT> @Plugin(name = "env", type = "Lookup")<a name="line.25"></a> |
| <FONT color="green">026</FONT> public class EnvironmentLookup implements StrLookup {<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> /**<a name="line.28"></a> |
| <FONT color="green">029</FONT> * Get the value of the environment variable.<a name="line.29"></a> |
| <FONT color="green">030</FONT> * @param key the key to be looked up, may be null<a name="line.30"></a> |
| <FONT color="green">031</FONT> * @return The value of the environment variable.<a name="line.31"></a> |
| <FONT color="green">032</FONT> */<a name="line.32"></a> |
| <FONT color="green">033</FONT> public String lookup(String key) {<a name="line.33"></a> |
| <FONT color="green">034</FONT> return System.getenv(key);<a name="line.34"></a> |
| <FONT color="green">035</FONT> }<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> /**<a name="line.37"></a> |
| <FONT color="green">038</FONT> * Get the value of the environment variable.<a name="line.38"></a> |
| <FONT color="green">039</FONT> * @param event The current LogEvent (is ignored by this StrLookup).<a name="line.39"></a> |
| <FONT color="green">040</FONT> * @param key the key to be looked up, may be null<a name="line.40"></a> |
| <FONT color="green">041</FONT> * @return The value of the environment variable.<a name="line.41"></a> |
| <FONT color="green">042</FONT> */<a name="line.42"></a> |
| <FONT color="green">043</FONT> public String lookup(LogEvent event, String key) {<a name="line.43"></a> |
| <FONT color="green">044</FONT> return System.getenv(key);<a name="line.44"></a> |
| <FONT color="green">045</FONT> }<a name="line.45"></a> |
| <FONT color="green">046</FONT> }<a name="line.46"></a> |
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