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CounterBatchUpdater.java
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CounterBatchUpdater.java
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/*
* 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.api;
final class CounterBatchUpdater implements Counter.BatchUpdater {
private final Counter counter;
private final int batchSize;
private int count;
private double sum;
CounterBatchUpdater(Counter counter, int batchSize) {
this.counter = counter;
this.batchSize = batchSize;
this.count = 0;
this.sum = 0.0;
}
@Override
public void add(double amount) {
if (Double.isFinite(amount) && amount > 0.0) {
sum += amount;
++count;
if (count >= batchSize) {
flush();
}
}
}
@Override
public void flush() {
counter.add(sum);
sum = 0.0;
count = 0;
}
@Override
public void close() throws Exception {
flush();
}
}