/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.agent.counter.meter;
import scouter.lang.ref.DOUBLE;
import scouter.lang.ref.INT;
import scouter.util.MeteringUtil;
import scouter.util.MeteringUtil.Handler;
public class MeterResource {
static class Bucket {
double value;
int count;
}
private MeteringUtil<Bucket> meter = new MeteringUtil<Bucket>() {
protected Bucket create() {
return new Bucket();
};
protected void clear(Bucket o) {
o.value=0;
o.count = 0;
}
};
public synchronized void add(double value) {
Bucket b = meter.getCurrentBucket();
b.value += value;
b.count++;
}
public double getAvg(int period) {
final INT count = new INT();
final DOUBLE sum = new DOUBLE();
meter.search(period, new Handler<MeterResource.Bucket>() {
public void process(Bucket u) {
sum.value += u.value;
count.value += u.count;
}
});
return count.value == 0 ? 0 : sum.value / count.value;
}
public double getSum(int period) {
final DOUBLE sum = new DOUBLE();
meter.search(period, new Handler<MeterResource.Bucket>() {
public void process(Bucket u) {
sum.value += u.value;
}
});
return sum.value;
}
}