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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
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package com.sun.enterprise.server.logging;

import java.util.Timer;

public class LogRotationTimer {
    private Timer rotationTimer;

    private LogRotationTimerTask rotationTimerTask;

    private static LogRotationTimer instance = new LogRotationTimer();

    private LogRotationTimer() {
        rotationTimer = new Timer("log-rotation-timer");
    }

    public static LogRotationTimer getInstance() {
        return instance;
    }

    public void startTimer(LogRotationTimerTask timerTask) {
        rotationTimerTask = timerTask;
        rotationTimer.schedule(rotationTimerTask,
                timerTask.getRotationTimerValue());
    }

    public void stopTimer() {
        rotationTimer.cancel();
    }

    public void restartTimer() {
        // We will restart the timer only if the timerTask is set which
        // means user has set a value for LogRotation based on Time
        if (rotationTimerTask != null) {
            rotationTimerTask.cancel();
            rotationTimerTask = new LogRotationTimerTask(
                    // This is wierd, We need to have a fresh TimerTask object
                    // to reschedule the work.
                    rotationTimerTask.task,
                    rotationTimerTask.getRotationTimerValueInMinutes());
            rotationTimer.schedule(rotationTimerTask,
                    rotationTimerTask.getRotationTimerValue());
        }
    }

    public void restartTimerForDayBasedRotation() {
        // We will restart the timer only if the timerTask is set which
        // means user has set a value for LogRotation based on Time
        if (rotationTimerTask != null) {
            rotationTimerTask.cancel();
            rotationTimerTask = new LogRotationTimerTask(
                    // This is wierd, We need to have a fresh TimerTask object
                    // to reschedule the work.
                    rotationTimerTask.task,
                    60 * 24);
            rotationTimer.schedule(rotationTimerTask,
                    1000 * 60 * 60 * 24);
        }
    }

}