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Redis based In-Memory Data Grid for Java

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/**
 * Copyright 2018 Nikita Koksharov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.redisson;

import java.util.List;

import org.redisson.api.RLock;

/**
 * RedLock locking algorithm implementation for multiple locks. 
 * It manages all locks as one.
 * 
 * @see http://redis.io/topics/distlock
 *
 * @author Nikita Koksharov
 *
 */
public class RedissonRedLock extends RedissonMultiLock {

    /**
     * Creates instance with multiple {@link RLock} objects.
     * Each RLock object could be created by own Redisson instance.
     *
     * @param locks - array of locks
     */
    public RedissonRedLock(RLock... locks) {
        super(locks);
    }

    @Override
    protected int failedLocksLimit() {
        return locks.size() - minLocksAmount(locks);
    }
    
    protected int minLocksAmount(final List locks) {
        return locks.size()/2 + 1;
    }

    @Override
    protected long calcLockWaitTime(long remainTime) {
        return Math.max(remainTime / locks.size(), 1);
    }
    
    @Override
    public void unlock() {
        unlockInner(locks);
    }

}