/*
* Copyright 2012-2015 the original author or authors.
*
* 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.springframework.boot.actuate.cache;
import java.util.Set;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import org.infinispan.spring.provider.SpringCache;
/**
* {@link CacheStatisticsProvider} implementation for Infinispan.
*
* @author Stephane Nicoll
* @since 1.3.0
*/
public class InfinispanCacheStatisticsProvider
extends AbstractJmxCacheStatisticsProvider<SpringCache> {
@Override
protected ObjectName getObjectName(SpringCache cache)
throws MalformedObjectNameException {
ObjectName name = new ObjectName(
"org.infinispan:component=Statistics,type=Cache,name=\"" + cache.getName()
+ "(local)\",*");
Set<ObjectInstance> instances = getMBeanServer().queryMBeans(name, null);
if (instances.size() == 1) {
return instances.iterator().next().getObjectName();
}
// None or more than one
return null;
}
@Override
protected CacheStatistics getCacheStatistics(ObjectName objectName) {
DefaultCacheStatistics statistics = new DefaultCacheStatistics();
Integer size = getAttribute(objectName, "numberOfEntries", Integer.class);
if (size != null) {
statistics.setSize((long) size);
if (size > 0) {
// Let's initialize the stats if we have some data
initializeStats(objectName, statistics);
}
}
return statistics;
}
private void initializeStats(ObjectName objectName,
DefaultCacheStatistics statistics) {
Double hitRatio = getAttribute(objectName, "hitRatio", Double.class);
if ((hitRatio != null)) {
statistics.setHitRatio(hitRatio);
statistics.setMissRatio(1 - hitRatio);
}
}
}