/**
* Copyright (c) 2002-2010 "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.kernel.impl.management;
import java.util.Collection;
import java.util.Iterator;
import javax.management.NotCompliantMBeanException;
import org.neo4j.kernel.impl.nioneo.store.WindowPoolStats;
import org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource;
import org.neo4j.kernel.management.MemoryMapping;
import org.neo4j.kernel.management.WindowPoolInfo;
@Description( "The status of Neo4j memory mapping" )
class MemoryMappingBean extends Neo4jMBean implements MemoryMapping
{
static MemoryMappingBean create( final String instanceId, final NeoStoreXaDataSource datasource )
{
return createMX( new MXFactory<MemoryMappingBean>()
{
@Override
MemoryMappingBean createMXBean()
{
return new MemoryMappingBean( instanceId, datasource, true );
}
@Override
MemoryMappingBean createStandardMBean() throws NotCompliantMBeanException
{
return new MemoryMappingBean( instanceId, datasource );
}
} );
}
private final NeoStoreXaDataSource datasource;
private MemoryMappingBean( String instanceId, NeoStoreXaDataSource datasource )
throws NotCompliantMBeanException
{
super( instanceId, MemoryMapping.class );
this.datasource = datasource;
}
private MemoryMappingBean( String instanceId, NeoStoreXaDataSource datasource, boolean isMXBean )
{
super( instanceId, MemoryMapping.class, isMXBean );
this.datasource = datasource;
}
@Description( "Get information about each pool of memory mapped regions from store files with "
+ "memory mapping enabled" )
public WindowPoolInfo[] getMemoryPools()
{
return getMemoryPoolsImpl( datasource );
}
public static WindowPoolInfo[] getMemoryPoolsImpl( NeoStoreXaDataSource datasource )
{
Collection<WindowPoolStats> stats = datasource.getWindowPoolStats();
WindowPoolInfo[] pools = new WindowPoolInfo[stats.size()];
Iterator<WindowPoolStats> iter = stats.iterator();
for ( int index = 0; iter.hasNext(); index++ )
{
pools[index] = createWindowPoolInfo( iter.next() );
}
return pools;
}
private static WindowPoolInfo createWindowPoolInfo( WindowPoolStats stats )
{
return new WindowPoolInfo( stats.getName(), stats.getMemAvail(), stats.getMemUsed(),
stats.getWindowCount(), stats.getWindowSize(), stats.getHitCount(),
stats.getMissCount(), stats.getOomCount() );
}
}