/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2006-2008 Sun Microsystems, Inc.
|
*/
|
package org.opends.server.loggers;
|
import org.opends.messages.Message;
|
import static org.opends.messages.LoggerMessages.ERR_LOGGER_ERROR_LISTING_FILES;
|
|
import org.opends.server.admin.std.server.FileCountLogRetentionPolicyCfg;
|
import org.opends.server.admin.server.ConfigurationChangeListener;
|
|
import java.io.File;
|
import java.util.Arrays;
|
import java.util.List;
|
import java.util.ArrayList;
|
|
import static org.opends.server.loggers.debug.DebugLogger.*;
|
import org.opends.server.loggers.debug.DebugTracer;
|
import org.opends.server.types.ConfigChangeResult;
|
import org.opends.server.types.ResultCode;
|
import org.opends.server.types.DirectoryException;
|
import org.opends.server.core.DirectoryServer;
|
|
|
/**
|
* This class implements a retention policy based on the number of files.
|
* Files will be cleaned up based on the number of files on disk.
|
*/
|
public class FileNumberRetentionPolicy implements
|
RetentionPolicy<FileCountLogRetentionPolicyCfg>,
|
ConfigurationChangeListener<FileCountLogRetentionPolicyCfg>
|
{
|
/**
|
* The tracer object for the debug logger.
|
*/
|
private static final DebugTracer TRACER = getTracer();
|
|
private int numFiles = 0;
|
private FileCountLogRetentionPolicyCfg config;
|
|
/**
|
* {@inheritDoc}
|
*/
|
public void initializeLogRetentionPolicy(
|
FileCountLogRetentionPolicyCfg config)
|
{
|
this.numFiles = config.getNumberOfFiles();
|
this.config = config;
|
|
config.addFileCountChangeListener(this);
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
public boolean isConfigurationChangeAcceptable(
|
FileCountLogRetentionPolicyCfg config,
|
List<Message> unacceptableReasons)
|
{
|
// Changes should always be OK
|
return true;
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
public ConfigChangeResult applyConfigurationChange(
|
FileCountLogRetentionPolicyCfg config)
|
{
|
// Default result code.
|
ResultCode resultCode = ResultCode.SUCCESS;
|
boolean adminActionRequired = false;
|
ArrayList<Message> messages = new ArrayList<Message>();
|
|
this.numFiles = config.getNumberOfFiles();
|
this.config = config;
|
|
return new ConfigChangeResult(resultCode, adminActionRequired, messages);
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
public File[] deleteFiles(FileNamingPolicy fileNamingPolicy)
|
throws DirectoryException
|
{
|
File[] files = fileNamingPolicy.listFiles();
|
if(files == null)
|
{
|
Message message =
|
ERR_LOGGER_ERROR_LISTING_FILES.get(
|
fileNamingPolicy.getInitialName().toString());
|
throw new DirectoryException(DirectoryServer.getServerErrorResultCode(),
|
message);
|
}
|
|
ArrayList<File> filesToDelete = new ArrayList<File>();
|
|
if (files.length <= numFiles)
|
{
|
return new File[0];
|
}
|
|
// Sort files based on last modified time.
|
Arrays.sort(files, new FileComparator());
|
|
for (int j = numFiles; j < files.length; j++)
|
{
|
filesToDelete.add(files[j]);
|
}
|
|
return filesToDelete.toArray(new File[0]);
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
public String toString()
|
{
|
return "Free Number Retention Policy " + config.dn().toString();
|
}
|
}
|
