org.apache.zookeeper.server.metric.AvgMinMaxCounterSet Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.zookeeper.server.metric;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.zookeeper.metrics.SummarySet;
/**
* Generic set of long counters that keep track of min/max/avg
* for different keys.
* The counter is thread-safe
*/
public class AvgMinMaxCounterSet extends Metric implements SummarySet {
private final String name;
private ConcurrentHashMap counters = new ConcurrentHashMap<>();
public AvgMinMaxCounterSet(String name) {
this.name = name;
}
private AvgMinMaxCounter getCounterForKey(String key) {
AvgMinMaxCounter counter = counters.get(key);
if (counter == null) {
counters.putIfAbsent(key, new AvgMinMaxCounter(key + "_" + name));
counter = counters.get(key);
}
return counter;
}
public void addDataPoint(String key, long value) {
getCounterForKey(key).addDataPoint(value);
}
public void resetMax() {
for (Map.Entry entry : counters.entrySet()) {
entry.getValue().resetMax();
}
}
public void reset() {
for (Map.Entry entry : counters.entrySet()) {
entry.getValue().reset();
}
}
@Override
public void add(String key, long value) {
addDataPoint(key, value);
}
@Override
public Map values() {
Map m = new LinkedHashMap<>();
for (Map.Entry entry : counters.entrySet()) {
m.putAll(entry.getValue().values());
}
return m;
}
}