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1 /*
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2 Copyright (c) 2008 Franklin Schmidt <fschmidt@gmail.com>
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3
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4 Permission is hereby granted, free of charge, to any person obtaining a copy
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5 of this software and associated documentation files (the "Software"), to deal
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6 in the Software without restriction, including without limitation the rights
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7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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8 copies of the Software, and to permit persons to whom the Software is
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9 furnished to do so, subject to the following conditions:
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10
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11 The above copyright notice and this permission notice shall be included in
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12 all copies or substantial portions of the Software.
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13
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14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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20 THE SOFTWARE.
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21 */
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22
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23 package fschmidt.util.log4j;
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24
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25 import java.util.Map;
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26 import java.util.HashMap;
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27 import org.apache.log4j.Appender;
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28 import org.apache.log4j.AppenderSkeleton;
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29 import org.apache.log4j.spi.LoggingEvent;
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30 import org.apache.log4j.spi.ThrowableInformation;
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31
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32
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33 public final class AppSpecificAppender extends AppenderSkeleton {
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34 private static final ThreadLocal<String> localApp = new ThreadLocal<String>();
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35
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36 public static void setApp(String app) {
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37 localApp.set(app);
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38 }
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39
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40 private final Map<String,Appender> map = new HashMap<String,Appender>();
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41 private final Appender defaultAppender;
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42
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43 public AppSpecificAppender(Appender defaultAppender) {
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44 this.defaultAppender = defaultAppender;
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45 }
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46
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47 public void add(String app,Appender appender) {
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48 map.put(app,appender);
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49 }
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50
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51 public boolean requiresLayout() {
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52 return false;
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53 }
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54
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55 private Appender getAppender() {
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56 String app = (String)localApp.get();
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57 if( app==null )
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58 return defaultAppender;
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59 Appender appender = (Appender)map.get(app);
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60 return appender!=null ? appender : defaultAppender;
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61 }
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62
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63 protected void append(LoggingEvent event) {
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64 getAppender().doAppend(event);
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65 }
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66
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67 public void close() {
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68 Appender[] appenders = (Appender[])map.values().toArray(new Appender[0]);
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69 for( int i=0; i<appenders.length; i++ ) {
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70 appenders[i].close();
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71 }
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72 defaultAppender.close();
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73 }
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74 }
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