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PageCacheBean.java
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PageCacheBean.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 javax.management.NotCompliantMBeanException;
import org.neo4j.helpers.Service;
import org.neo4j.io.pagecache.monitoring.PageCacheCounters;
import org.neo4j.jmx.impl.ManagementBeanProvider;
import org.neo4j.jmx.impl.ManagementData;
import org.neo4j.jmx.impl.Neo4jMBean;
import org.neo4j.management.PageCache;
@Service.Implementation(ManagementBeanProvider.class)
public final class PageCacheBean extends ManagementBeanProvider
{
public PageCacheBean()
{
super( PageCache.class );
}
@Override
protected Neo4jMBean createMBean( ManagementData management ) throws NotCompliantMBeanException
{
return new PageCacheImpl( management );
}
private static class PageCacheImpl extends Neo4jMBean implements PageCache
{
private final PageCacheCounters pageCacheCounters;
PageCacheImpl( ManagementData management ) throws NotCompliantMBeanException
{
super( management );
this.pageCacheCounters = management.resolveDependency( PageCacheCounters.class );
}
@Override
public long getFaults()
{
return pageCacheCounters.faults();
}
@Override
public long getEvictions()
{
return pageCacheCounters.evictions();
}
@Override
public long getPins()
{
return pageCacheCounters.pins();
}
@Override
public long getUnpins()
{
return pageCacheCounters.unpins();
}
@Override
public long getFlushes()
{
return pageCacheCounters.flushes();
}
@Override
public long getBytesRead()
{
return pageCacheCounters.bytesRead();
}
@Override
public long getBytesWritten()
{
return pageCacheCounters.bytesWritten();
}
@Override
public long getFileMappings()
{
return pageCacheCounters.filesMapped();
}
@Override
public long getFileUnmappings()
{
return pageCacheCounters.filesUnmapped();
}
@Override
public long getEvictionExceptions()
{
return pageCacheCounters.evictionExceptions();
}
}
}