/**
* This method performs threshold checks and invokes filters before delegating actual logging to
* the subclasses specific {@link AppenderSkeleton#append} method.
*/
public synchronized void doAppend(LoggingEvent event) {
if (closed) {
LogLog.error("Attempted to append to closed appender named [" + name + "].");
return;
}
if (!isAsSevereAsThreshold(event.getLevel())) {
return;
}
Filter f = this.headFilter;
FILTER_LOOP:
while (f != null) {
switch (f.decide(event)) {
case Filter.DENY:
return;
case Filter.ACCEPT:
break FILTER_LOOP;
case Filter.NEUTRAL:
f = f.getNext();
}
}
this.append(event);
}
