content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.beam.sdk.metrics;
  
  import com.google.auto.value.AutoValue;
  
  /** The result of a {@link Distribution} metric. */
  @AutoValue
  public abstract class DistributionResult {
  
    public abstract long getSum();
  
    public abstract long getCount();
  
    public abstract long getMin();
  
    public abstract long getMax();
  
    public double getMean() {
      return (1.0 * getSum()) / getCount();
    }
  
    /** The IDENTITY_ELEMENT is used to start accumulating distributions. */
    public static final DistributionResult IDENTITY_ELEMENT =
        create(0, 0, Long.MAX_VALUE, Long.MIN_VALUE);
  
    public static DistributionResult create(long sum, long count, long min, long max) {
      return new AutoValue_DistributionResult(sum, count, min, max);
    }
  }
  