source/ch/cyberduck/ui/cocoa/logging/SystemLogAppender.java

   1 package ch.cyberduck.ui.cocoa.logging;
   2
   3 /*
   4  * Copyright (c) 2012 David Kocher. All rights reserved.
   5  * http://cyberduck.ch/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * Bug fixes, suggestions and comments should be sent to:
  18  * dkocher@cyberduck.ch
  19  */
  20
  21 import ch.cyberduck.binding.foundation.FoundationKitFunctionsLibrary;
  22
  23 import org.apache.log4j.AppenderSkeleton;
  24 import org.apache.log4j.Layout;
  25 import org.apache.log4j.Level;
  26 import org.apache.log4j.spi.LoggingEvent;
  27
  28 /**
  29  * Redirect to NSLog(). Logs an error message to the Apple System Log facility.
  30  *
  31  * @version $Id$
  32  */
  33 public class SystemLogAppender extends AppenderSkeleton {
  34
  35     @Override
  36     protected void append(final LoggingEvent event) {
  37         final StringBuilder buffer = new StringBuilder();
  38         buffer.append(layout.format(event));
  39         if(layout.ignoresThrowable()) {
  40             final String[] trace = event.getThrowableStrRep();
  41             if(trace != null) {
  42                 buffer.append(Layout.LINE_SEP);
  43                 for(final String t : trace) {
  44                     buffer.append(t).append(Layout.LINE_SEP);
  45                 }
  46             }
  47         }
  48         FoundationKitFunctionsLibrary.NSLog(buffer.toString());
  49     }
  50
  51     @Override
  52     public synchronized void doAppend(final LoggingEvent event) {
  53         if(event.getLevel().isGreaterOrEqual(Level.ERROR)) {
  54             // Restrict to error level
  55             super.doAppend(event);
  56         }
  57     }
  58
  59     @Override
  60     public void close() {
  61         //
  62     }
  63
  64     @Override
  65     public boolean requiresLayout() {
  66         return true;
  67     }
  68 }