com.hotels.bdp.circustrain.s3mapreducecp.aws.ExponentialBackoffStrategy Maven / Gradle / Ivy

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/**
 * Copyright (C) ${license.git.copyrightYears} Expedia, 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.hotels.bdp.circustrain.s3mapreducecp.aws;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonWebServiceRequest;
import com.amazonaws.retry.RetryPolicy.BackoffStrategy;

class ExponentialBackoffStrategy implements BackoffStrategy {
  private static final Logger LOG = LoggerFactory.getLogger(ExponentialBackoffStrategy.class);

  private final long errorRetryDelay;

  ExponentialBackoffStrategy(long errorRetryDelay) {
    this.errorRetryDelay = errorRetryDelay;
  }

  @Override
  public long delayBeforeNextRetry(
      AmazonWebServiceRequest originalRequest,
      AmazonClientException exception,
      int retriesAttempted) {
    long backoffDelay = retriesAttempted * errorRetryDelay;
    LOG.debug("Exception caught during upload, retries attempted = {}, will retry in {} ms", retriesAttempted,
        backoffDelay, exception);
    return backoffDelay;
  }

}