runners/jet/src/main/java/org/apache/beam/runners/jet/metrics/DistributionImpl.java

/*
 * 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
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 */
package org.apache.beam.runners.jet.metrics;

import org.apache.beam.runners.core.metrics.DistributionData;
import org.apache.beam.sdk.metrics.Distribution;
import org.apache.beam.sdk.metrics.MetricName;

/** Implementation of {@link Distribution}. */
public class DistributionImpl extends AbstractMetric<DistributionData> implements Distribution {

  private DistributionData distributionData = DistributionData.EMPTY;

  public DistributionImpl(MetricName name) {
    super(name);
  }

  @Override
  DistributionData getValue() {
    return distributionData;
  }

  @Override
  public void update(long value) {
    update(DistributionData.singleton(value));
  }

  @Override
  public void update(long sum, long count, long min, long max) {
    update(DistributionData.create(sum, count, min, max));
  }

  private void update(DistributionData update) {
    distributionData = distributionData.combine(update);
  }
}