ExponentialBackofDelay.java

/*
 * (C) Copyright 2006-2014 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * 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.nuxeo.ecm.core.redis.retry;

import java.util.concurrent.TimeUnit;

public class ExponentialBackofDelay extends SimpleDelay {

    protected int attempt;

    public ExponentialBackofDelay(int base, int delay) {
        super(base, delay);
    }

    @Override
    protected long computeDelay() {
        int delay = base * (1 << ++attempt);
        return TimeUnit.MILLISECONDS.convert(delay, TimeUnit.SECONDS);
    }

}