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package net.snowflake.client.util;

import java.util.concurrent.ThreadLocalRandom;

/**
 * Decorrelated Jitter backoff
 * 
 * https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/
 */
public class DecorrelatedJitterBackoff
{
  private final long base;
  private final long cap;

  public DecorrelatedJitterBackoff(long base, long cap)
  {
    this.base = base;
    this.cap = cap;
  }

  public long nextSleepTime(long sleep)
  {
    return Math.min(cap, ThreadLocalRandom.current().nextLong(base, sleep * 3));
  }
}