/*
* Copyright 2013 Rackspace
*
* 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 com.rackspacecloud.blueflood.cache;
import com.codahale.metrics.Gauge;
import com.codahale.metrics.JmxAttributeGauge;
import com.codahale.metrics.MetricRegistry;
import com.google.common.cache.CacheStats;
import com.rackspacecloud.blueflood.utils.Metrics;
import javax.management.ObjectName;
public abstract class AbstractJmxCache implements CacheStatsMBean {
private Gauge hitCount;
private Gauge hitRate;
private Gauge loadCount;
private Gauge missRate;
private Gauge requestCount;
private Gauge totalLoadTime;
public abstract CacheStats getStats();
public long getHitCount() {
return getStats().hitCount();
}
public double getHitRate() {
return getStats().hitRate();
}
public long getMissCount() {
return getStats().missCount();
}
public double getMissRate() {
return getStats().missRate();
}
public long getLoadCount() {
return getStats().loadCount();
}
public long getRequestCount() {
return getStats().requestCount();
}
public long getTotalLoadTime() {
return getStats().totalLoadTime();
}
public void instantiateYammerMetrics(Class klass, String scope, ObjectName nameObj) {
String name = MetricRegistry.name(klass);
if (scope != null) {
name = MetricRegistry.name(name, scope);
}
MetricRegistry reg = Metrics.getRegistry();
hitCount = reg.register(MetricRegistry.name(name, "Hit Count"),
new JmxAttributeGauge(nameObj, "HitCount"));
hitRate = reg.register(MetricRegistry.name(name, "Hit Rate"),
new JmxAttributeGauge(nameObj, "HitRate"));
loadCount = reg.register(MetricRegistry.name(name, "Load Count"),
new JmxAttributeGauge(nameObj, "LoadCount"));
missRate = reg.register(MetricRegistry.name(name, "Miss Rate"),
new JmxAttributeGauge(nameObj, "MissRate"));
requestCount = reg.register(MetricRegistry.name(name, "Request Count"),
new JmxAttributeGauge(nameObj, "RequestCount"));
totalLoadTime = reg.register(MetricRegistry.name(name, "Total Load Time"),
new JmxAttributeGauge(nameObj, "TotalLoadTime"));
}
}