package net.sourceforge.squirrel_sql.client;
/*
* Copyright (C) 2008 Rob Manning
* manningr@users.sourceforge.net
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.io.File;
import java.io.IOException;
import net.sourceforge.squirrel_sql.client.util.ApplicationFiles;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.RollingFileAppender;
/**
* This log4j appender writes out to the
* <TT>ApplicationFiles.getExecutionLogFile()</TT> file and rotates the log file based on size of the log
* file. Logs files will not be allowed to grow larger than 1MB and no more than 10 will be kept.
*
*/
public class SquirrelFileSizeRollingAppender extends RollingFileAppender
{
/**
* Constructor which tells log4j where the application logfile is. Since this can be changed based on the
* user-settings-dir launch option, this Appender hard-codes the location of the file so that it doesn't
* need to be configured in two different places (squirrel-sql.sh and log4j.properties)
*/
public SquirrelFileSizeRollingAppender() throws IOException
{
super(new PatternLayout("%-4r [%t] %-5p %c %x - %m%n"),
getLogFile().getAbsolutePath(), true);
super.setMaxFileSize("1MB");
super.setMaxBackupIndex(10);
}
/**
* Retrieve the file to write the execution log to.
*
* @return File to write execution log to.
*/
private static File getLogFile()
{
final File logFile = new ApplicationFiles().getExecutionLogFile();
if (logFile == null)
{
throw new IllegalStateException("null ExecutionLogFile in ApplicationFiles");
}
return logFile;
}
}
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