org.rapidoid.commons.Stats Maven / Gradle / Ivy
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/*-
* #%L
* rapidoid-commons
* %%
* Copyright (C) 2014 - 2018 Nikolche Mihajlovski and contributors
* %%
* 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.
* #L%
*/
package org.rapidoid.commons;
import org.rapidoid.RapidoidThing;
import org.rapidoid.annotation.Authors;
import org.rapidoid.annotation.Since;
@Authors("Nikolche Mihajlovski")
@Since("5.1.0")
public class Stats extends RapidoidThing {
private volatile int count;
private volatile double min;
private volatile double max;
private volatile double sum;
public synchronized void add(double value) {
min = count > 0 ? Math.min(min, value) : value;
max = count > 0 ? Math.max(max, value) : value;
sum += value;
count++;
}
public double min() {
return min;
}
public double max() {
return max;
}
public double sum() {
return sum;
}
public int count() {
return count;
}
public double avg() {
return count > 0 ? sum / count : 0;
}
@Override
public synchronized String toString() {
return "Stats{" +
"count=" + count +
", min=" + min +
", max=" + max +
", sum=" + sum +
", avg=" + avg() +
'}';
}
}