com.netflix.spectator.atlas.AtlasDistSummaryBatchUpdater Maven / Gradle / Ivy
/*
* Copyright 2014-2022 Netflix, Inc.
*
* Licensed 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.netflix.spectator.atlas;
import com.netflix.spectator.api.DistributionSummary;
import java.util.function.Consumer;
import java.util.function.Supplier;
final class AtlasDistSummaryBatchUpdater
implements DistributionSummary.BatchUpdater, Consumer> {
private Supplier distSummarySupplier;
private final int batchSize;
private int count;
private long total;
private double totalOfSquares;
private long max;
AtlasDistSummaryBatchUpdater(int batchSize) {
this.batchSize = batchSize;
}
@Override
public void accept(Supplier distSummarySupplier) {
this.distSummarySupplier = distSummarySupplier;
}
private AtlasDistributionSummary getDistributionSummary() {
if (distSummarySupplier != null) {
DistributionSummary d = distSummarySupplier.get();
return (d instanceof AtlasDistributionSummary) ? (AtlasDistributionSummary) d : null;
}
return null;
}
@Override
public void record(long amount) {
++count;
if (amount > 0L) {
total += amount;
totalOfSquares += (double) amount * amount;
if (amount > max) {
max = amount;
}
}
if (count >= batchSize) {
flush();
}
}
@Override
public void flush() {
AtlasDistributionSummary distSummary = getDistributionSummary();
if (distSummary != null) {
distSummary.update(count, total, totalOfSquares, max);
count = 0;
total = 0L;
totalOfSquares = 0.0;
max = 0L;
}
}
@Override
public void close() throws Exception {
flush();
}
}