lttng-ust-java-tests-log4j/src/test/java/org/lttng/ust/agent/utils/Log4jTestUtils.java

   1 /*
   2  * Copyright (C) 2015, EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 package org.lttng.ust.agent.utils;
  20
  21 import java.io.IOException;
  22
  23 import org.apache.log4j.Level;
  24 import org.apache.log4j.Logger;
  25 import org.lttng.ust.agent.log4j.LttngLogAppender;
  26
  27 /**
  28  * Utility methods for log4j tests
  29  */
  30 public final class Log4jTestUtils {
  31
  32     private Log4jTestUtils() {
  33     }
  34
  35     /**
  36      * Check the the Log4j native library is available, effectively allowing
  37      * LTTng Log4j appenders to be used.
  38      *
  39      * @return True if Log4j works fine, false if it does not.
  40      */
  41     public static boolean checkForLog4jLibrary() {
  42         try {
  43             LttngLogAppender testAppender = new LttngLogAppender();
  44             testAppender.close();
  45         } catch (SecurityException | IOException e) {
  46             e.printStackTrace();
  47             return false;
  48         }
  49         return true;
  50     }
  51
  52     /**
  53      * Send 10 dummy events through the provided logger
  54      *
  55      * @param logger
  56      *            The logger to use to send events
  57      */
  58     public static void send10Events(Logger logger) {
  59         // Levels/priorities are DEBUG, ERROR, FATAL, INFO, TRACE, WARN
  60         logger.debug("Debug message. Lost among so many.");
  61         logger.debug("Debug message with a throwable", new IOException());
  62         logger.error("Error messsage. This might be bad.");
  63         logger.error("Error message with a throwable", new IOException());
  64         logger.fatal("A fatal message. You are already dead.");
  65         logger.info("A info message. Lol, who cares.");
  66         logger.trace("A trace message. No, no *that* trace");
  67         logger.warn("A warn message. Yellow underline.");
  68         logger.log(Level.DEBUG, "A debug message using .log()");
  69         logger.log(Level.ERROR, "A error message using .log()");
  70     }
  71 }