--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fschmidt/util/log4j/AppSpecificAppender.java	Sun Oct 05 17:24:15 2025 -0600
@@ -0,0 +1,74 @@
+/*
+Copyright (c) 2008  Franklin Schmidt <fschmidt@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+package fschmidt.util.log4j;
+
+import java.util.Map;
+import java.util.HashMap;
+import org.apache.log4j.Appender;
+import org.apache.log4j.AppenderSkeleton;
+import org.apache.log4j.spi.LoggingEvent;
+import org.apache.log4j.spi.ThrowableInformation;
+
+
+public final class AppSpecificAppender extends AppenderSkeleton {
+	private static final ThreadLocal<String> localApp = new ThreadLocal<String>();
+
+	public static void setApp(String app) {
+		localApp.set(app);
+	}
+
+	private final Map<String,Appender> map = new HashMap<String,Appender>();
+	private final Appender defaultAppender;
+
+	public AppSpecificAppender(Appender defaultAppender) {
+		this.defaultAppender = defaultAppender;
+	}
+
+	public void add(String app,Appender appender) {
+		map.put(app,appender);
+	}
+
+	public boolean requiresLayout() {
+		return false;
+	}
+
+	private Appender getAppender() {
+		String app = (String)localApp.get();
+		if( app==null )
+			return defaultAppender;
+		Appender appender = (Appender)map.get(app);
+		return appender!=null ? appender : defaultAppender;
+	}
+
+	protected void append(LoggingEvent event) {
+		getAppender().doAppend(event);
+	}
+
+	public void close() {
+		Appender[] appenders = (Appender[])map.values().toArray(new Appender[0]);
+		for( int i=0; i<appenders.length; i++ ) {
+			appenders[i].close();
+		}
+		defaultAppender.close();
+	}
+}