001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package chapters.appenders.mail;
015
016import ch.qos.logback.core.boolex.EvaluationException;
017import ch.qos.logback.core.boolex.EventEvaluator;
018import ch.qos.logback.core.spi.ContextAwareBase;
019
020/**
021 * A simple EventEvaluator implementation that triggers email transmission after
022 * 1024 events regardless of event level.
023 */
024public class CounterBasedEvaluator extends ContextAwareBase implements EventEvaluator {
025
026    static int LIMIT = 1024;
027    int counter = 0;
028    String name;
029    boolean started;
030
031    public boolean evaluate(Object event) throws NullPointerException, EvaluationException {
032        counter++;
033
034        if (counter == LIMIT) {
035            counter = 0;
036
037            return true;
038        } else {
039            return false;
040        }
041    }
042
043    public String getName() {
044        return name;
045    }
046
047    public void setName(String name) {
048        this.name = name;
049    }
050
051    public boolean isStarted() {
052        return started;
053    }
054
055    public void start() {
056        started = true;
057    }
058
059    public void stop() {
060        started = false;
061    }
062}