/*
|
* The contents of this file are subject to the terms of the Common Development and
|
* Distribution License (the License). You may not use this file except in compliance with the
|
* License.
|
*
|
* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
|
* specific language governing permission and limitations under the License.
|
*
|
* When distributing Covered Software, include this CDDL Header Notice in each file and include
|
* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
|
* Header, with the fields enclosed by brackets [] replaced by your own identifying
|
* information: "Portions Copyright [year] [name of copyright owner]".
|
*
|
* Copyright 2006-2008 Sun Microsystems, Inc.
|
* Portions Copyright 2013-2016 ForgeRock AS.
|
*/
|
package org.opends.server.loggers;
|
|
import static org.opends.messages.LoggerMessages.*;
|
import static org.opends.server.util.StaticUtils.*;
|
|
import java.io.File;
|
import java.util.ArrayList;
|
import java.util.Arrays;
|
import java.util.List;
|
|
import org.forgerock.i18n.LocalizableMessage;
|
import org.forgerock.i18n.slf4j.LocalizedLogger;
|
import org.forgerock.opendj.config.server.ConfigurationChangeListener;
|
import org.forgerock.opendj.server.config.server.FreeDiskSpaceLogRetentionPolicyCfg;
|
import org.opends.server.core.DirectoryServer;
|
import org.forgerock.opendj.config.server.ConfigChangeResult;
|
import org.opends.server.types.DirectoryException;
|
|
/**
|
* This class implements a retention policy based on the free disk space
|
* available expressed as a percentage.
|
*/
|
public class FreeDiskSpaceRetentionPolicy implements
|
RetentionPolicy<FreeDiskSpaceLogRetentionPolicyCfg>,
|
ConfigurationChangeListener<FreeDiskSpaceLogRetentionPolicyCfg>
|
{
|
private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
|
|
private long freeDiskSpace;
|
private FreeDiskSpaceLogRetentionPolicyCfg config;
|
|
@Override
|
public void initializeLogRetentionPolicy(
|
FreeDiskSpaceLogRetentionPolicyCfg config)
|
{
|
this.freeDiskSpace = config.getFreeDiskSpace();
|
this.config = config;
|
|
config.addFreeDiskSpaceChangeListener(this);
|
}
|
|
@Override
|
public boolean isConfigurationChangeAcceptable(
|
FreeDiskSpaceLogRetentionPolicyCfg config,
|
List<LocalizableMessage> unacceptableReasons)
|
{
|
// Changes should always be OK
|
return true;
|
}
|
|
@Override
|
public ConfigChangeResult applyConfigurationChange(
|
FreeDiskSpaceLogRetentionPolicyCfg config)
|
{
|
this.freeDiskSpace = config.getFreeDiskSpace();
|
this.config = config;
|
|
return new ConfigChangeResult();
|
}
|
|
@Override
|
public File[] deleteFiles(FileNamingPolicy fileNamingPolicy)
|
throws DirectoryException
|
{
|
File[] files = fileNamingPolicy.listFiles();
|
if(files == null)
|
{
|
throw new DirectoryException(DirectoryServer.getServerErrorResultCode(),
|
ERR_LOGGER_ERROR_LISTING_FILES.get(fileNamingPolicy.getInitialName()));
|
}
|
|
if(files.length <= 0)
|
{
|
return new File[0];
|
}
|
|
long freeSpace = 0;
|
try
|
{
|
freeSpace = files[0].getFreeSpace();
|
}
|
catch (Exception e)
|
{
|
logger.traceException(e);
|
LocalizableMessage message =
|
ERR_LOGGER_ERROR_OBTAINING_FREE_SPACE.get(files[0],
|
stackTraceToSingleLineString(e));
|
throw new DirectoryException(DirectoryServer.getServerErrorResultCode(),
|
message, e);
|
}
|
|
logger.trace("Current free disk space: %d, Required: %d", freeSpace,
|
freeDiskSpace);
|
|
if (freeSpace > freeDiskSpace)
|
{
|
// No cleaning needed.
|
return new File[0];
|
}
|
|
long freeSpaceNeeded = freeDiskSpace - freeSpace;
|
|
// Sort files based on last modified time.
|
Arrays.sort(files, new FileComparator());
|
|
List<File> filesToDelete = new ArrayList<>();
|
long freedSpace = 0;
|
for (int j = files.length - 1; j > 1; j--)
|
{
|
freedSpace += files[j].length();
|
filesToDelete.add(files[j]);
|
if (freedSpace >= freeSpaceNeeded)
|
{
|
break;
|
}
|
}
|
return filesToDelete.toArray(new File[filesToDelete.size()]);
|
}
|
|
@Override
|
public String toString()
|
{
|
return "Free Disk Retention Policy " + config.dn();
|
}
|
}
|
