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    1   /**
    2    * Copyright (c) 2004-2011 QOS.ch
    3    * All rights reserved.
    4    *
    5    * Permission is hereby granted, free  of charge, to any person obtaining
    6    * a  copy  of this  software  and  associated  documentation files  (the
    7    * "Software"), to  deal in  the Software without  restriction, including
    8    * without limitation  the rights to  use, copy, modify,  merge, publish,
    9    * distribute,  sublicense, and/or sell  copies of  the Software,  and to
    10   * permit persons to whom the Software  is furnished to do so, subject to
    11   * the following conditions:
    12   *
    13   * The  above  copyright  notice  and  this permission  notice  shall  be
    14   * included in all copies or substantial portions of the Software.
    15   *
    16   * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
    17   * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
    18   * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
    19   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
    20   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
    21   * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
    22   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    23   *
    24   */
    25  package org.slf4j.impl;
    26
    27  import java.util.ArrayList;
    28  import java.util.List;
    29  import java.util.Random;
    30
    31  import org.apache.log4j.AppenderSkeleton;
    32  import org.apache.log4j.spi.LoggingEvent;
    33  import org.slf4j.Logger;
    34  import org.slf4j.LoggerFactory;
    35
    36  public class RecursiveAppender extends AppenderSkeleton {
    37
    38      int diff = new Random().nextInt();
    39      int activationDelay = 0;
    40      String loggerName = "org.slf4j.impl.RecursiveAppender" + diff;
    41
    42      List<LoggingEvent> events = new ArrayList<LoggingEvent>();
    43
    44      public RecursiveAppender() {
    45          System.out.println("entering RecursiveAppender constructor");
    46          Logger logger = LoggerFactory.getLogger(loggerName);
    47          logger.info("Calling a logger in the constructor");
    48          System.out.println("exiting RecursiveAppender constructor");
    49      }
    50
    51      protected void append(LoggingEvent e) {
    52          events.add(e);
    53      }
    54
    55      public void close() {
    56      }
    57
    58      public boolean requiresLayout() {
    59          return false;
    60      }
    61
    62      @Override
    63      public void activateOptions() {
    64          System.out.println("entering RecursiveAppender.activateOptions");
    65          if (activationDelay > 0) {
    66              Logger logger = LoggerFactory.getLogger(loggerName);
    67              logger.info("About to wait {} millis", activationDelay);
    68              try {
    69                  Thread.sleep(activationDelay);
    70              } catch (InterruptedException e) {
    71                  e.printStackTrace();
    72              }
    73              logger.info("Done waiting {} millis", activationDelay);
    74          }
    75          super.activateOptions();
    76
    77          System.out.println("exiting RecursiveAppender.activateOptions");
    78      }
    79
    80      public int getActivationDelay() {
    81          return activationDelay;
    82      }
    83
    84      public void setActivationDelay(int activationDelay) {
    85          this.activationDelay = activationDelay;
    86      }
    87
    88  }