    001/**
    002 * Copyright (c) 2004-2011 QOS.ch
    003 * All rights reserved.
    004 *
    005 * Permission is hereby granted, free  of charge, to any person obtaining
    006 * a  copy  of this  software  and  associated  documentation files  (the
    007 * "Software"), to  deal in  the Software without  restriction, including
    008 * without limitation  the rights to  use, copy, modify,  merge, publish,
    009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
    010 * permit persons to whom the Software  is furnished to do so, subject to
    011 * the following conditions:
    012 *
    013 * The  above  copyright  notice  and  this permission  notice  shall  be
    014 * included in all copies or substantial portions of the Software.
    015 *
    016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
    017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
    018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
    019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
    020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
    021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
    022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    023 *
    024 */
    025package org.slf4j.impl;
    026
    027import java.util.ArrayList;
    028import java.util.List;
    029import java.util.Random;
    030
    031import org.apache.log4j.AppenderSkeleton;
    032import org.apache.log4j.spi.LoggingEvent;
    033import org.slf4j.Logger;
    034import org.slf4j.LoggerFactory;
    035
    036public class RecursiveAppender extends AppenderSkeleton {
    037
    038    int diff = new Random().nextInt();
    039    int activationDelay = 0;
    040    String loggerName = "org.slf4j.impl.RecursiveAppender" + diff;
    041
    042    List<LoggingEvent> events = new ArrayList<LoggingEvent>();
    043
    044    public RecursiveAppender() {
    045        System.out.println("entering RecursiveAppender constructor");
    046        Logger logger = LoggerFactory.getLogger(loggerName);
    047        logger.info("Calling a logger in the constructor");
    048        System.out.println("exiting RecursiveAppender constructor");
    049    }
    050
    051    protected void append(LoggingEvent e) {
    052        events.add(e);
    053    }
    054
    055    public void close() {
    056    }
    057
    058    public boolean requiresLayout() {
    059        return false;
    060    }
    061
    062    @Override
    063    public void activateOptions() {
    064        System.out.println("entering RecursiveAppender.activateOptions");
    065        if (activationDelay > 0) {
    066            Logger logger = LoggerFactory.getLogger(loggerName);
    067            logger.info("About to wait {} millis", activationDelay);
    068            try {
    069                Thread.sleep(activationDelay);
    070            } catch (InterruptedException e) {
    071                e.printStackTrace();
    072            }
    073            logger.info("Done waiting {} millis", activationDelay);
    074        }
    075        super.activateOptions();
    076
    077        System.out.println("exiting RecursiveAppender.activateOptions");
    078    }
    079
    080    public int getActivationDelay() {
    081        return activationDelay;
    082    }
    083
    084    public void setActivationDelay(int activationDelay) {
    085        this.activationDelay = activationDelay;
    086    }
    087
    088}