org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.aggregator.ExplicitBucketHistogramAccumulation Maven / Gradle / Ivy

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/*
 * Copyright The OpenTelemetry Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.aggregator;

import org.apache.rocketmq.shaded.com.google.auto.value.AutoValue;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.data.DoubleExemplarData;
import java.util.Collections;
import java.util.List;
import javax.annotation.concurrent.Immutable;

@Immutable
@AutoValue
abstract class ExplicitBucketHistogramAccumulation {
  /**
   * Creates a new {@link ExplicitBucketHistogramAccumulation} with the given values. Assume
   * `counts` is read-only so we don't need a defensive-copy here.
   *
   * @return a new {@link ExplicitBucketHistogramAccumulation} with the given values.
   */
  static ExplicitBucketHistogramAccumulation create(
      double sum, boolean hasMinMax, double min, double max, long[] counts) {
    return create(sum, hasMinMax, min, max, counts, Collections.emptyList());
  }

  static ExplicitBucketHistogramAccumulation create(
      double sum,
      boolean hasMinMax,
      double min,
      double max,
      long[] counts,
      List exemplars) {
    return new AutoValue_ExplicitBucketHistogramAccumulation(
        sum, hasMinMax, min, max, counts, exemplars);
  }

  ExplicitBucketHistogramAccumulation() {}

  /**
   * The sum of all measurements recorded.
   *
   * @return the sum of recorded measurements.
   */
  abstract double getSum();

  /** Return {@code true} if {@link #getMin()} and {@link #getMax()} is set. */
  abstract boolean hasMinMax();

  /**
   * The min of all measurements recorded, if {@link #hasMinMax()} is {@code true}. If {@link
   * #hasMinMax()} is {@code false}, the response should be ignored.
   */
  abstract double getMin();

  /**
   * The max of all measurements recorded, if {@link #hasMinMax()} is {@code true}. If {@link
   * #hasMinMax()} is {@code false}, the response should be ignored.
   */
  abstract double getMax();

  /**
   * The counts in each bucket. The returned type is a mutable object, but it should be fine because
   * the class is only used internally.
   *
   * @return the counts in each bucket. do not mutate the returned object.
   */
  @SuppressWarnings("mutable")
  abstract long[] getCounts();

  /** Exemplars accumulated during this period. */
  abstract List getExemplars();
}