/*
 * Copyright (C) 2008-2023, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.util;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;

public class ReentrantLockMap {

    ConcurrentHashMap<String, ReentrantLock> mapStringLock;

    public ReentrantLockMap() {
        mapStringLock = new ConcurrentHashMap<>();
    }

    public ReentrantLock getLock(String key) {
        ReentrantLock initValue = createIntanceLock();
        ReentrantLock lock = mapStringLock.putIfAbsent(key, initValue);
        if (lock == null) {
            lock = initValue;
        }
        return lock;
    }

    public void retainLock(String key) {
        mapStringLock.remove(key);
    }

    protected ReentrantLock createIntanceLock() {
        return new ReentrantLock();
    }
}