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110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
/* Copyright (c) 2003-2006 MySQL AB
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Use is subject to license terms
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
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#ifndef FILELOGHANDLER_H
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#define FILELOGHANDLER_H
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#include "LogHandler.hpp"
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class File_class;
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/**
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* Logs messages to a file. The log file will be archived depending on
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* the file's size or after N number of log entries.
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* There will be only a specified number of archived logs
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* which will be "recycled".
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*
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* The archived log file will be named as <filename>.1..N.
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*
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*
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* @see LogHandler
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* @version #@ $Id: FileLogHandler.hpp,v 1.2 2003/09/01 10:15:53 innpeno Exp $
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*/
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class FileLogHandler : public LogHandler
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{
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public:
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/** Max number of log files to archive. */
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STATIC_CONST( MAX_NO_FILES = 6 );
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/** Max file size of the log before archiving. */
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STATIC_CONST( MAX_FILE_SIZE = 1024000 );
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/** Max number of log entries before archiving. */
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STATIC_CONST( MAX_LOG_ENTRIES = 10000 );
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/**
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* Default constructor.
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*/
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FileLogHandler();
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/**
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* Creates a new file handler with the specified filename,
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* max number of archived log files and max log size for each log.
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*
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* @param aFileName the log filename.
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* @param maxNoFiles the maximum number of archived log files.
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* @param maxFileSize the maximum log file size before archiving.
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* @param maxLogEntries the maximum number of log entries before checking time to archive.
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*/
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FileLogHandler(const char* aFileName,
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int maxNoFiles = MAX_NO_FILES,
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long maxFileSize = MAX_FILE_SIZE,
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unsigned int maxLogEntries = MAX_LOG_ENTRIES);
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/**
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* Destructor.
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*/
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virtual ~FileLogHandler();
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virtual bool open();
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virtual bool close();
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virtual bool setParam(const BaseString ¶m, const BaseString &value);
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virtual bool checkParams();
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protected:
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virtual void writeHeader(const char* pCategory, Logger::LoggerLevel level);
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virtual void writeMessage(const char* pMsg);
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virtual void writeFooter();
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private:
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/** Prohibit */
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FileLogHandler(const FileLogHandler&);
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FileLogHandler operator = (const FileLogHandler&);
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bool operator == (const FileLogHandler&);
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/**
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* Returns true if it is time to create a new log file.
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*/
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bool isTimeForNewFile();
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/**
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* Archives the current log file and creates a new one.
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* The archived log filename will be in the format of <filename>.N
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*
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* @return true if successful.
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*/
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bool createNewFile();
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bool setFilename(const BaseString &filename);
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bool setMaxSize(const BaseString &size);
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bool setMaxFiles(const BaseString &files);
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int m_maxNoFiles;
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off_t m_maxFileSize;
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unsigned int m_maxLogEntries;
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File_class* m_pLogFile;
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};
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#endif
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