/*
* Copyright (c) 2015 Spotify AB.
*
* 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 com.spotify.heroic.aggregation.simple;
import com.google.common.util.concurrent.AtomicDouble;
import com.spotify.heroic.aggregation.AbstractBucket;
import com.spotify.heroic.aggregation.DoubleBucket;
import com.spotify.heroic.metric.Point;
import com.spotify.heroic.metric.Spread;
import lombok.Data;
import lombok.EqualsAndHashCode;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
@Data
@EqualsAndHashCode(callSuper = true)
public class AverageBucket extends AbstractBucket implements DoubleBucket {
private final long timestamp;
private final AtomicDouble value = new AtomicDouble();
private final AtomicLong count = new AtomicLong();
public long timestamp() {
return timestamp;
}
@Override
public void updatePoint(Map<String, String> key, Point d) {
value.addAndGet(d.getValue());
count.incrementAndGet();
}
@Override
public void updateSpread(Map<String, String> key, Spread sample) {
value.addAndGet(sample.getSum());
count.addAndGet(sample.getCount());
}
@Override
public double value() {
final long count = this.count.get();
if (count == 0) {
return Double.NaN;
}
return value.get() / count;
}
}