/*
* Copyright (C) 2012 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.impl.quota;
import org.exoplatform.services.jcr.dataflow.ItemDataConsumer;
import org.exoplatform.services.jcr.dataflow.ItemDataTraversingVisitor;
import org.exoplatform.services.jcr.datamodel.ItemType;
import org.exoplatform.services.jcr.datamodel.NodeData;
import org.exoplatform.services.jcr.datamodel.PropertyData;
import org.exoplatform.services.jcr.datamodel.QPathEntry;
import org.exoplatform.services.jcr.impl.Constants;
import org.exoplatform.services.jcr.impl.core.JCRPath;
import org.exoplatform.services.jcr.impl.core.LocationFactory;
import org.exoplatform.services.jcr.impl.dataflow.persistent.WorkspacePersistentDataManager;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import javax.jcr.ItemNotFoundException;
import javax.jcr.RepositoryException;
/**
* @author <a href="abazko@exoplatform.com">Anatoliy Bazko</a>
* @version $Id: CalculateNodeDataSizeTool.java 34360 2009-07-22 23:58:59Z tolusha $
*/
public class CalculateNodeDataSizeTool
{
/**
* Logger.
*/
private final Log LOG = ExoLogger.getLogger("exo.jcr.component.core.CalculateNodeDataSizeTask");
/**
* Workspace name.
*/
protected final String wsName;
/**
* Repository name.
*/
protected final String rName;
/**
* {@link QuotaPersister}
*/
protected final QuotaPersister quotaPersister;
/**
* {@link WorkspacePersistentDataManager}.
*/
protected final WorkspacePersistentDataManager dataManager;
/**
* {@link LocationFactory} instance.
*/
protected final LocationFactory lFactory;
/**
* CalculateNodeDataSizeTask constructor.
*/
public CalculateNodeDataSizeTool(WorkspaceQuotaContext context)
{
this.wsName = context.wsName;
this.rName = context.rName;
this.quotaPersister = context.quotaPersister;
this.dataManager = context.dataManager;
this.lFactory = context.lFactory;
}
/**
* Calculates node data size directly and persists value into {@link QuotaPersister}.
*/
public void getAndSetNodeDataSize(String nodePath)
{
try
{
long dataSize = getNodeDataSizeDirectly(nodePath);
quotaPersister.setNodeDataSizeIfQuotaExists(rName, wsName, nodePath, dataSize);
}
catch (QuotaManagerException e)
{
LOG.warn("Can't calculate node data size " + nodePath + " because: " + e.getCause().getMessage());
}
}
/**
* Calculates node data size by asking directly respective {@link WorkspacePersistentDataManager}.
*/
public long getNodeDataSizeDirectly(String nodePath) throws QuotaManagerException
{
try
{
NodeData node = (NodeData)dataManager.getItemData(Constants.ROOT_UUID);
JCRPath path = lFactory.parseRelPath(nodePath.substring(1)); // let ignore root entry '[]:1'
for (QPathEntry entry : path.getInternalPath().getEntries())
{
node = (NodeData)dataManager.getItemData(node, entry, ItemType.NODE, false);
if (node == null) // may be already removed
{
throw new ItemNotFoundException("Node " + nodePath + " not found in workspace");
}
}
CalculateNodeDataSizeVisitor visitor = new CalculateNodeDataSizeVisitor(dataManager);
node.accept(visitor);
return visitor.getSize();
}
catch (RepositoryException e)
{
throw new QuotaManagerException(e.getMessage(), e);
}
}
/**
* Traverse over all children nodes and calculate its size.
*/
private class CalculateNodeDataSizeVisitor extends ItemDataTraversingVisitor
{
/**
* Node data size.
*/
private long size;
/**
* CalculateNodeDataSizeVisitor constructor.
*/
public CalculateNodeDataSizeVisitor(ItemDataConsumer dataManager)
{
super(dataManager);
}
/**
* {@inheritDoc}
*/
protected void entering(PropertyData property, int level) throws RepositoryException
{
}
/**
* {@inheritDoc}
*/
protected void entering(NodeData node, int level) throws RepositoryException
{
size += ((WorkspacePersistentDataManager)dataManager).getNodeDataSize(node.getIdentifier());
}
/**
* {@inheritDoc}
*/
protected void leaving(PropertyData property, int level) throws RepositoryException
{
}
/**
* {@inheritDoc}
*/
protected void leaving(NodeData node, int level) throws RepositoryException
{
}
/**
* Returns calculated node data size.
*/
public long getSize()
{
return size;
}
}
}