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C++

/***************************************************************************
* Copyright (C) gempa GmbH *
* All rights reserved. *
* Contact: gempa GmbH (seiscomp-dev@gempa.de) *
* *
* GNU Affero General Public License Usage *
* This file may be used under the terms of the GNU Affero *
* Public License version 3.0 as published by the Free Software Foundation *
* and appearing in the file LICENSE included in the packaging of this *
* file. Please review the following information to ensure the GNU Affero *
* Public License version 3.0 requirements will be met: *
* https://www.gnu.org/licenses/agpl-3.0.html. *
* *
* Other Usage *
* Alternatively, this file may be used in accordance with the terms and *
* conditions contained in a signed written agreement between you and *
* gempa GmbH. *
***************************************************************************/
#ifndef SC_LOGGING_FILEROTATOR_H
#define SC_LOGGING_FILEROTATOR_H
#include <seiscomp/logging/file.h>
#include <mutex>
namespace Seiscomp {
namespace Logging {
class SC_SYSTEM_CORE_API FileRotatorOutput : public FileOutput {
public:
FileRotatorOutput(int timeSpan = 60*60*24, int historySize = 7,
int maxFileSize = 100*1024*1024);
/**
* Creates a new FileRotatorOutput instance
* @param filename The filename to log to
* @param timeSpan The timespan in seconds for the log time before rotating
* @param count The number of historic files to store
*/
FileRotatorOutput(const char* filename, int timeSpan = 60*60*24,
int historySize = 7, int maxFileSize = 100*1024*1024);
bool open(const char* filename);
protected:
/** Callback method for receiving log messages */
void log(const char* channelName,
LogLevel level,
const char* msg,
time_t time);
private:
void rotateLogs();
void removeLog(int index);
void renameLog(int oldIndex, int newIndex);
protected:
//! time span to keep one log
int _timeSpan;
//! number of log files to keep
int _historySize;
//! maximum file size of a log file
int _maxFileSize;
//! last log file written to
int _lastInterval;
std::mutex outputMutex;
};
}
}
#endif