/**
* Logback: the generic, reliable, fast and flexible logging framework.
*
* Copyright (C) 2000-2008, QOS.ch
*
* This library is free software, you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation.
*/
package ch.qos.logback.core.joran.action;
import org.xml.sax.Attributes;
import ch.qos.logback.core.Appender;
import ch.qos.logback.core.CoreConstants;
import ch.qos.logback.core.joran.spi.InterpretationContext;
import ch.qos.logback.core.spi.AppenderAttachable;
import ch.qos.logback.core.util.OptionHelper;
import java.util.HashMap;
public class AppenderRefAction extends Action {
boolean inError = false;
@SuppressWarnings("unchecked")
public void begin(InterpretationContext ec, String tagName, Attributes attributes) {
// Let us forget about previous errors (in this object)
inError = false;
// logger.debug("begin called");
Object o = ec.peekObject();
if (!(o instanceof AppenderAttachable)) {
String errMsg = "Could not find an AppenderAttachable at the top of execution stack. Near ["
+ tagName + "] line " + getLineNumber(ec);
inError = true;
addError(errMsg);
return;
}
AppenderAttachable appenderAttachable = (AppenderAttachable) o;
String appenderName = attributes.getValue(ActionConst.REF_ATTRIBUTE);
if (OptionHelper.isEmpty(appenderName)) {
// print a meaningful error message and return
String errMsg = "Missing appender ref attribute in <appender-ref> tag.";
inError = true;
addError(errMsg);
return;
}
HashMap appenderBag = (HashMap) ec.getObjectMap().get(
ActionConst.APPENDER_BAG);
Appender appender = (Appender) appenderBag.get(appenderName);
if (appender == null) {
String msg = "Could not find an appender named [" + appenderName
+ "]. Did you define it below in the config file?";
inError = true;
addError(msg);
addError("See " + CoreConstants.CODES_URL
+ "#appender_order for more details.");
return;
}
addInfo("Attaching appender named [" + appenderName + "] to "
+ appenderAttachable);
appenderAttachable.addAppender(appender);
}
public void end(InterpretationContext ec, String n) {
}
}