/**
* Licensed to DigitalPebble Ltd under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* DigitalPebble 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 com.digitalpebble.storm.metrics;
import java.util.HashMap;
import java.util.Map;
import backtype.storm.metric.api.IMetric;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.Snapshot;
import com.codahale.metrics.Timer;
/**
* @author Enno Shioji (enno.shioji@peerindex.com)
*/
public class TimerMetric implements IMetric {
private final MetricRegistry registry = new MetricRegistry();
public Timer scope(String key) {
return registry.timer(key);
}
public Object getValueAndReset() {
final Map<String, Number> ret = new HashMap<String, Number>();
for (Map.Entry<String, Timer> entry : registry.getTimers().entrySet()) {
String prefix = entry.getKey() + "/";
Timer timer = entry.getValue();
Snapshot snapshot = timer.getSnapshot();
ret.put(prefix + "count", timer.getCount());
ret.put(prefix + "max", snapshot.getMax());
ret.put(prefix + "mean", snapshot.getMean());
ret.put(prefix + "min", snapshot.getMin());
ret.put(prefix + "stddev", snapshot.getStdDev());
ret.put(prefix + "p50", snapshot.getMedian());
ret.put(prefix + "p75", snapshot.get75thPercentile());
ret.put(prefix + "p95", snapshot.get95thPercentile());
ret.put(prefix + "p98", snapshot.get98thPercentile());
ret.put(prefix + "p99", snapshot.get99thPercentile());
ret.put(prefix + "p999", snapshot.get999thPercentile());
ret.put(prefix + "mean_rate", timer.getMeanRate());
ret.put(prefix + "m1_rate", timer.getOneMinuteRate());
ret.put(prefix + "m5_rate", timer.getFiveMinuteRate());
ret.put(prefix + "m15_rate", timer.getFifteenMinuteRate());
}
return ret;
}
}