com.netflix.nfsidecar.utils.BoundedExponentialRetryCallable Maven / Gradle / Ivy
/**
* Copyright 2013 Netflix, Inc.
*
* 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.netflix.nfsidecar.utils;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.CancellationException;
public abstract class BoundedExponentialRetryCallable extends RetryableCallable
{
public final static long MAX_SLEEP = 10000;
public final static long MIN_SLEEP = 1000;
public final static int MAX_RETRIES = 10;
private static final Logger logger = LoggerFactory.getLogger(BoundedExponentialRetryCallable.class);
private long max;
private long min;
private int maxRetries;
private final ThreadSleeper sleeper = new ThreadSleeper();
public BoundedExponentialRetryCallable()
{
this.max = MAX_SLEEP;
this.min = MIN_SLEEP;
this.maxRetries = MAX_RETRIES;
}
public BoundedExponentialRetryCallable(long minSleep, long maxSleep, int maxNumRetries)
{
this.max = maxSleep;
this.min = minSleep;
this.maxRetries = maxNumRetries;
}
public T call() throws Exception {
long delay = min;// ms
int retry = 0;
while (true) {
try {
return retriableCall();
} catch (CancellationException e) {
throw e;
} catch (Exception e) {
retry++;
if (delay < max && retry <= maxRetries) {
delay *= 2;
logger.error(String.format("Retry #%d for: %s", retry, e.getMessage()));
sleeper.sleep(delay);
} else if (delay >= max && retry <= maxRetries) {
logger.error(String.format("Retry #%d for: %s", retry, ExceptionUtils.getFullStackTrace(e)));
sleeper.sleep(max);
} else {
logger.info("Exception --> " + ExceptionUtils.getFullStackTrace(e));
throw e;
}
} finally {
forEachExecution();
}
}
}
public void setMax(long max) {
this.max = max;
}
public void setMin(long min) {
this.min = min;
}
public void setMaxRetries(int maxRetries) {
this.maxRetries = maxRetries;
}
}
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