/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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 com.linkedin.pinot.common.utils.retry;
import com.google.common.util.concurrent.Uninterruptibles;
import com.linkedin.pinot.common.Utils;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
/**
* Fixed delay retry policy, see {@link RetryPolicies#fixedDelayRetryPolicy(int, long)}.
*/
public class FixedDelayRetryPolicy implements RetryPolicy {
public FixedDelayRetryPolicy(int attemptCount, long sleepTimeMillis) {
_attemptCount = attemptCount;
_sleepTimeMillis = sleepTimeMillis;
}
private int _attemptCount;
private long _sleepTimeMillis;
@Override
public boolean attempt(Callable<Boolean> operation) {
try {
int remainingAttempts = _attemptCount - 1;
boolean result = operation.call();
while (!result && 0 < remainingAttempts) {
Uninterruptibles.sleepUninterruptibly(_sleepTimeMillis, TimeUnit.MILLISECONDS);
result = operation.call();
remainingAttempts--;
}
return result;
} catch (Exception e) {
Utils.rethrowException(e);
return false;
}
}
}