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Find all log4j appenders

/ Published in: Java
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Find all the current log4j appenders by iterating through all loggers and checking the appender references.

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  1. public ArrayList<Appender> findAllAppenders()
  2. {
  3.     ArrayList<Appender> appenderList = new ArrayList<>();
  4.  
  5.     Logger logger = org.apache.log4j.LogManager.getRootLogger();
  6.     Enumeration appenders = logger.getAllAppenders();
  7.     if (appenders != null) {
  8.         while (appenders.hasMoreElements()) {
  9.             Appender appender = (Appender) appenders.nextElement();
  10.             if (appender != null) {
  11.                 appenderList.add(appender);
  12.             }
  13.         }
  14.     }
  15.  
  16.     Enumeration loggers = org.apache.log4j.LogManager.getCurrentLoggers();
  17.     while (loggers.hasMoreElements()) {
  18.         logger = (Logger) loggers.nextElement();
  19.         appenders = logger.getAllAppenders();
  20.         if (appenders != null) {
  21.             while (appenders.hasMoreElements()) {
  22.                 Appender appender = (Appender) appenders.nextElement();
  23.                 if (appender != null) {
  24.                     appenderList.add(appender);
  25.                 }
  26.             }
  27.         }
  28.     }
  29.     return appenderList;
  30. }

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