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/*
* Copyright 2014 Open Networking Laboratory
*
* 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 org.onlab.metrics;
import com.codahale.metrics.Timer;
import com.codahale.metrics.Timer.Context;
public final class MetricsUtil {
/**
* Starts the Metric Timer.
* <p>
* If the given timer was null, it will silently return null.
* </p>
*
* @param timer timer to start
* @return timing context, if timer was not null
*/
public static Context startTimer(Timer timer) {
if (timer != null) {
return timer.time();
}
return null;
}
/**
* Stops the Metric Timer context.
* <p>
* If the given context was null, it will silently be ignored.
* </p>
*
* @param context timing context to stop, if not null.
*/
public static void stopTimer(Context context) {
if (context != null) {
context.stop();
}
}
// avoid instantiation
private MetricsUtil() {}
}
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