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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.curator.retry;

import org.apache.curator.RetryPolicy;
import org.apache.curator.RetrySleeper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.TimeUnit;

import static com.google.common.base.Preconditions.checkArgument;

/**
 * {@link RetryPolicy} implementation that always allowsRetry.
 */
public class RetryForever implements RetryPolicy
{
    private static final Logger log = LoggerFactory.getLogger(RetryForever.class);

    private final int retryIntervalMs;

    public RetryForever(int retryIntervalMs)
    {
        checkArgument(retryIntervalMs > 0);
        this.retryIntervalMs = retryIntervalMs;
    }

    @Override
    public boolean allowRetry(int retryCount, long elapsedTimeMs, RetrySleeper sleeper)
    {
        try
        {
            sleeper.sleepFor(retryIntervalMs, TimeUnit.MILLISECONDS);
        }
        catch (InterruptedException e)
        {
            Thread.currentThread().interrupt();
            log.warn("Error occurred while sleeping", e);
            return false;
        }
        return true;
    }
}