liblttng-ust-jul/org/lttng/ust/jul/LTTngLogHandler.java

   1 /*
   2  * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License, version 2.1 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This library is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 package org.lttng.ust.jul;
  19
  20 import java.lang.String;
  21 import java.util.logging.Handler;
  22 import java.util.logging.LogRecord;
  23 import java.util.logging.LogManager;
  24 import java.util.logging.Level;
  25 import java.util.logging.Logger;
  26 import java.util.Collections;
  27 import java.util.HashMap;
  28 import java.util.Map;
  29
  30 import org.lttng.ust.jul.LTTngUst;
  31
  32 public class LTTngLogHandler extends Handler {
  33         /* Am I a root Log Handler. */
  34         public int is_root = 0;
  35         public int refcount = 0;
  36
  37         public LogManager logManager;
  38
  39         /* Logger object attached to this handler that can trigger a tracepoint. */
  40         public Map<String, LTTngEvent> enabledEvents =
  41                 Collections.synchronizedMap(new HashMap<String, LTTngEvent>());
  42
  43         /* Constructor */
  44         public LTTngLogHandler(LogManager logManager) {
  45                 super();
  46
  47                 this.logManager = logManager;
  48
  49                 /* Initialize LTTng UST tracer. */
  50                 LTTngUst.init();
  51         }
  52
  53         /*
  54          * Cleanup this handler state meaning put it back to a vanilla state.
  55          */
  56         public void clear() {
  57                 this.enabledEvents.clear();
  58         }
  59
  60         @Override
  61         public void close() throws SecurityException {}
  62
  63         @Override
  64         public void flush() {}
  65
  66         @Override
  67         public void publish(LogRecord record) {
  68                 /*
  69                  * Specific tracepoing designed for JUL events. The source class of the
  70                  * caller is used for the event name, the raw message is taken, the
  71                  * loglevel of the record and the thread ID.
  72                  */
  73                 if (this.is_root == 1) {
  74                         LTTngUst.tracepointS(record.getMessage(),
  75                                         record.getLoggerName(), record.getSourceClassName(),
  76                                         record.getSourceMethodName(), record.getMillis(),
  77                                         record.getLevel().intValue(), record.getThreadID());
  78                 } else {
  79                         LTTngUst.tracepointU(record.getMessage(),
  80                                         record.getLoggerName(), record.getSourceClassName(),
  81                                         record.getSourceMethodName(), record.getMillis(),
  82                                         record.getLevel().intValue(), record.getThreadID());
  83                 }
  84         }
  85 }