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The engine API for nosqlbench;
Provides the interfaces needed to build internal modules for the
nosqlbench core engine
/*
*
* Copyright 2016 jshook
* 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 io.nosqlbench.engine.api.metrics;
import com.codahale.metrics.Meter;
import io.nosqlbench.engine.api.activityimpl.ActivityDef;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
/**
* Use this to provide exception metering in a uniform way.
*/
public class ExceptionMeterMetrics {
private final ConcurrentHashMap meters = new ConcurrentHashMap<>();
private final ActivityDef activityDef;
public ExceptionMeterMetrics(ActivityDef activityDef) {
this.activityDef = activityDef;
}
public void mark(String name) {
Meter c = meters.get(name);
if (c == null) {
synchronized (meters) {
c = meters.computeIfAbsent(
name,
k -> ActivityMetrics.meter(activityDef, "exceptions." + name)
);
}
}
c.mark();
}
public List getMeters() {
return new ArrayList<>(meters.values());
}
}
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