scouter.agent.counter.meter.MeterAPI Maven / Gradle / Ivy
/*
* 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.INT;
import scouter.lang.ref.LONG;
import scouter.util.MeteringUtil;
import scouter.util.MeteringUtil.Handler;
public class MeterAPI {
private static MeterAPI inst = new MeterAPI();
public static MeterAPI getInstance() {
return inst;
}
final static class Bucket {
int count;
long time;
int error;
}
private MeteringUtil meter = new MeteringUtil() {
protected Bucket create() {
return new Bucket();
};
protected void clear(Bucket o) {
o.count = 0;
o.error = 0;
o.time = 0L;
}
};
public synchronized void add(int elapsed, boolean err) {
Bucket b = meter.getCurrentBucket();
b.count++;
b.time += elapsed;
if (err) {
b.error++;
}
}
public float getTps(int period) {
final INT sum = new INT();
period = meter.search(period, new Handler() {
public void process(Bucket b) {
sum.value += b.count;
}
});
return (float) ((double) sum.value / period);
}
public int getAvgTime(int period) {
final LONG sum = new LONG();
final INT cnt = new INT();
meter.search(period, new Handler() {
public void process(Bucket b) {
sum.value += b.time;
cnt.value += b.count;
}
});
return (int) ((cnt.value == 0) ? 0 : sum.value / cnt.value);
}
public long getSumTime(int period) {
final LONG sum = new LONG();
meter.search(period, new Handler() {
public void process(Bucket b) {
sum.value += b.time;
}
});
return sum.value;
}
public int getCount(int period) {
final INT sum = new INT();
meter.search(period, new Handler() {
public void process(Bucket b) {
sum.value += b.count;
}
});
return sum.value;
}
public int getErrorCount(int period) {
final INT sum = new INT();
meter.search(period, new Handler() {
public void process(Bucket b) {
sum.value += b.error;
}
});
return sum.value;
}
public float getErrorRate(int period) {
final INT cnt = new INT();
final INT err = new INT();
meter.search(period, new Handler() {
public void process(Bucket b) {
cnt.value += b.count;
err.value += b.error;
}
});
return (float) ((cnt.value == 0) ? 0 : (((double) err.value / cnt.value) * 100.0));
}
}