/*
* 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.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* Is supposed to be executed on coordinator only.
*
* @author <a href="abazko@exoplatform.com">Anatoliy Bazko</a>
* @version $Id: ApplyPersistedChangesTask.java 34360 Aug 22, 2012 tolusha $
*/
public class ApplyPersistedChangesTask implements Runnable
{
/**
* Logger.
*/
protected final Log LOG = ExoLogger.getLogger("exo.jcr.component.core.ApplyPersistedChangesTask");
/**
* The changes to be applied.
*/
protected final ChangesItem changesItem;
/**
* Workspace name.
*/
protected final String wsName;
/**
* Repository name.
*/
protected final String rName;
/**
* {@link QuotaPersister}
*/
protected final QuotaPersister quotaPersister;
/**
* {@link WorkspaceQuotaContext} instance.
*/
protected final WorkspaceQuotaContext context;
/**
* Helps to calculate node data size.
*/
protected final CalculateNodeDataSizeTool calculateNodeDataSizeTool;
/**
* ApplyPersistedChangesTask constructor.
*/
ApplyPersistedChangesTask(WorkspaceQuotaContext context, ChangesItem changesItem)
{
this.changesItem = changesItem;
this.context = context;
this.wsName = context.wsName;
this.rName = context.rName;
this.quotaPersister = context.quotaPersister;
this.calculateNodeDataSizeTool = new CalculateNodeDataSizeTool(context);
}
/**
* {@inheritDoc}
*/
public void run()
{
try
{
long delta = changesItem.getWorkspaceChangedSize();
accumulatePersistedWorkspaceChanges(delta);
accumulatePersistedRepositoryChanges(delta);
accumulatePersistedGlobalChanges(delta);
removeNodeDataSizeFor(changesItem.getAllNodesUnknownChangedSize());
accumulatePersistedNodesChanges(changesItem.getAllNodesCalculatedChangedSize());
}
catch (QuotaManagerException e)
{
LOG.error("Can't apply persisted changes", e);
}
}
/**
* Remove from {@link QuotaPersister} stored node data sized
* if node path is considered as path where changes were made
* but changed size is unknown due to different reasons.
*/
private void removeNodeDataSizeFor(Set<String> paths)
{
Set<String> trackedNodes = quotaPersister.getAllTrackedNodes(rName, wsName);
for (String nodePath : paths)
{
for (String trackedPath : trackedNodes)
{
if (trackedPath.startsWith(nodePath))
{
quotaPersister.removeNodeDataSize(rName, wsName, trackedPath);
}
}
}
}
/**
* Update nodes data size.
*/
protected void accumulatePersistedNodesChanges(Map<String, Long> calculatedChangedNodesSize)
throws QuotaManagerException
{
for (Entry<String, Long> entry : calculatedChangedNodesSize.entrySet())
{
String nodePath = entry.getKey();
long delta = entry.getValue();
try
{
long dataSize = delta + quotaPersister.getNodeDataSize(rName, wsName, nodePath);
quotaPersister.setNodeDataSizeIfQuotaExists(rName, wsName, nodePath, dataSize);
}
catch (UnknownDataSizeException e)
{
calculateNodeDataSizeTool.getAndSetNodeDataSize(nodePath);
}
}
}
/**
* Update workspace data size.
*/
protected void accumulatePersistedWorkspaceChanges(long delta) throws QuotaManagerException
{
long dataSize = 0;
try
{
dataSize = quotaPersister.getWorkspaceDataSize(rName, wsName);
}
catch (UnknownDataSizeException e)
{
if (LOG.isTraceEnabled())
{
LOG.trace(e.getMessage(), e);
}
}
long newDataSize = Math.max(dataSize + delta, 0); // avoid possible inconsistency
quotaPersister.setWorkspaceDataSize(rName, wsName, newDataSize);
}
/**
* Update repository data size.
*/
protected void accumulatePersistedRepositoryChanges(long delta)
{
long dataSize = 0;
try
{
dataSize = quotaPersister.getRepositoryDataSize(rName);
}
catch (UnknownDataSizeException e)
{
if (LOG.isTraceEnabled())
{
LOG.trace(e.getMessage(), e);
}
}
long newDataSize = Math.max(dataSize + delta, 0); // to avoid possible inconsistency
quotaPersister.setRepositoryDataSize(rName, newDataSize);
}
/**
* Update global data size.
*/
private void accumulatePersistedGlobalChanges(long delta)
{
long dataSize = 0;
try
{
dataSize = quotaPersister.getGlobalDataSize();
}
catch (UnknownDataSizeException e)
{
if (LOG.isTraceEnabled())
{
LOG.trace(e.getMessage(), e);
}
}
long newDataSize = Math.max(dataSize + delta, 0); // to avoid possible inconsistency
quotaPersister.setGlobalDataSize(newDataSize);
}
}