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 ch.qos.logback.core;
015
016import java.util.HashSet;
017import java.util.Set;
018
019import ch.qos.logback.core.spi.LifeCycle;
020
021/**
022 * An object that manages a collection of components that implement the
023 * {@link LifeCycle} interface.  Each component that is added to the manager
024 * will be stopped and removed from the manager when the manager is reset.
025 *
026 * @author Carl Harris
027 */
028public class LifeCycleManager {
029
030    private final Set<LifeCycle> components = new HashSet<LifeCycle>();
031
032    /**
033     * Registers a component with this manager.  
034     * <p>
035     * @param component the component whose life cycle is to be managed
036     */
037    public void register(LifeCycle component) {
038        components.add(component);
039    }
040
041    /**
042     * Resets this manager.
043     * <p>
044     * All registered components are stopped and removed from the manager.
045     */
046    public void reset() {
047        for (LifeCycle component : components) {
048            if (component.isStarted()) {
049                component.stop();
050            }
051        }
052        components.clear();
053    }
054
055}