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CacheBean.java
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CacheBean.java
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/**
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.management.impl;
import java.util.Collection;
import java.util.LinkedList;
import javax.management.NotCompliantMBeanException;
import org.neo4j.helpers.Service;
import org.neo4j.jmx.impl.ManagementBeanProvider;
import org.neo4j.jmx.impl.ManagementData;
import org.neo4j.jmx.impl.Neo4jMBean;
import org.neo4j.kernel.impl.cache.Cache;
import org.neo4j.kernel.impl.core.NodeManager;
@Service.Implementation( ManagementBeanProvider.class )
public class CacheBean extends ManagementBeanProvider
{
public CacheBean()
{
super( org.neo4j.management.Cache.class );
}
@Override
protected Iterable<? extends Neo4jMBean> createMBeans( ManagementData management )
throws NotCompliantMBeanException
{
NodeManager nm = management.getKernelData().graphDatabase().getDependencyResolver()
.resolveDependency( NodeManager.class );
Collection<CacheManager> cacheBeans = new LinkedList<>();
for ( Cache<?> cache : nm.caches() )
{
cacheBeans.add( new CacheManager( management, nm, cache ) );
}
return cacheBeans;
}
@Override
protected Neo4jMBean createMBean( ManagementData management ) throws NotCompliantMBeanException
{
throw new UnsupportedOperationException( "Uses createMBeans" );
}
private class CacheManager extends Neo4jMBean implements org.neo4j.management.Cache
{
private final Cache cache;
private final NodeManager nodeManager;
CacheManager( ManagementData management, NodeManager nodeManager, Cache cache )
throws NotCompliantMBeanException
{
super( management, cache.getName() );
this.nodeManager = nodeManager;
this.cache = cache;
}
public String getCacheType()
{
return nodeManager.getCacheType().getDescription();
}
public void clear()
{
cache.clear();
}
@Override
public long getCacheSize()
{
return cache.size();
}
@Override
public long getHitCount()
{
return cache.hitCount();
}
@Override
public long getMissCount()
{
return cache.missCount();
}
}
}