/**
* Sets the level on {@code logger} to {@code newLevel}. Any child loggers currently inheriting
* their level from {@code logger} will be updated recursively.
*
* @param newLevel the new minimum logging threshold. If null, the logger's parent level will be
* used; or {@code Level.INFO} for loggers with no parent.
*/
synchronized void setLevelRecursively(Logger logger, Level newLevel) {
int previous = logger.levelIntVal;
logger.levelObjVal = newLevel;
if (newLevel == null) {
logger.levelIntVal =
logger.parent != null ? logger.parent.levelIntVal : Level.INFO.intValue();
} else {
logger.levelIntVal = newLevel.intValue();
}
if (previous != logger.levelIntVal) {
for (Logger child : logger.children) {
if (child.levelObjVal == null) {
setLevelRecursively(child, null);
}
}
}
}
