How to use

HystrixRollingNumber$CumulativeSum

in

com.netflix.hystrix.util

cumulativeSum.addBucket(lastBucket);

cumulativeSum.addBucket(lastBucket);

/**
 * Get the cumulative sum of all buckets ever since the JVM started without rolling for the given {@link HystrixRollingNumberEvent} type.
 * <p>
 * See {@link #getRollingSum(HystrixRollingNumberEvent)} for the rolling sum.
 * <p>
 * The {@link HystrixRollingNumberEvent} must be a "counter" type <code>HystrixRollingNumberEvent.isCounter() == true</code>.
 * 
 * @param type HystrixRollingNumberEvent defining which counter to retrieve values from
 * @return cumulative sum of all increments and adds for the given {@link HystrixRollingNumberEvent} counter type
 */
public long getCumulativeSum(HystrixRollingNumberEvent type) {
  // this isn't 100% atomic since multiple threads can be affecting latestBucket & cumulativeSum independently
  // but that's okay since the count is always a moving target and we're accepting a "point in time" best attempt
  // we are however putting 'getValueOfLatestBucket' first since it can have side-affects on cumulativeSum whereas the inverse is not true
  return getValueOfLatestBucket(type) + cumulativeSum.get(type);
}

/**
 * Force a reset of all rolling counters (clear all buckets) so that statistics start being gathered from scratch.
 * <p>
 * This does NOT reset the CumulativeSum values.
 */
public void reset() {
  // if we are resetting, that means the lastBucket won't have a chance to be captured in CumulativeSum, so let's do it here
  Bucket lastBucket = buckets.peekLast();
  if (lastBucket != null) {
    cumulativeSum.addBucket(lastBucket);
  }
  // clear buckets so we start over again
  buckets.clear();
}

public void addBucket(Bucket lastBucket) {
  for (HystrixRollingNumberEvent type : HystrixRollingNumberEvent.values()) {
    if (type.isCounter()) {
      getAdder(type).add(lastBucket.getAdder(type).sum());
    }
    if (type.isMaxUpdater()) {
      getMaxUpdater(type).update(lastBucket.getMaxUpdater(type).max());
    }
  }
}

/**
 * Get the cumulative sum of all buckets ever since the JVM started without rolling for the given {@link HystrixRollingNumberEvent} type.
 * <p>
 * See {@link #getRollingSum(HystrixRollingNumberEvent)} for the rolling sum.
 * <p>
 * The {@link HystrixRollingNumberEvent} must be a "counter" type <code>HystrixRollingNumberEvent.isCounter() == true</code>.
 * 
 * @param type HystrixRollingNumberEvent defining which counter to retrieve values from
 * @return cumulative sum of all increments and adds for the given {@link HystrixRollingNumberEvent} counter type
 */
public long getCumulativeSum(HystrixRollingNumberEvent type) {
  // this isn't 100% atomic since multiple threads can be affecting latestBucket & cumulativeSum independently
  // but that's okay since the count is always a moving target and we're accepting a "point in time" best attempt
  // we are however putting 'getValueOfLatestBucket' first since it can have side-affects on cumulativeSum whereas the inverse is not true
  return getValueOfLatestBucket(type) + cumulativeSum.get(type);
}

/**
 * Force a reset of all rolling counters (clear all buckets) so that statistics start being gathered from scratch.
 * <p>
 * This does NOT reset the CumulativeSum values.
 */
public void reset() {
  // if we are resetting, that means the lastBucket won't have a chance to be captured in CumulativeSum, so let's do it here
  Bucket lastBucket = buckets.peekLast();
  if (lastBucket != null) {
    cumulativeSum.addBucket(lastBucket);
  }
  // clear buckets so we start over again
  buckets.clear();
}

public void addBucket(Bucket lastBucket) {
  for (HystrixRollingNumberEvent type : HystrixRollingNumberEvent.values()) {
    if (type.isCounter()) {
      getAdder(type).add(lastBucket.getAdder(type).sum());
    }
    if (type.isMaxUpdater()) {
      getMaxUpdater(type).update(lastBucket.getMaxUpdater(type).max());
    }
  }
}