topical media & game development
lib-of-vs-libs-Poco-include-Poco-PurgeStrategy.h / h
//
// PurgeStrategy.h
//
//
//
// Library: Foundation
// Package: Logging
// Module: FileChannel
//
// Definition of the PurgeStrategy class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
ifndef Foundation_PurgeStrategy_INCLUDED
define Foundation_PurgeStrategy_INCLUDED
include "Poco/Foundation.h"
include "Poco/File.h"
include "Poco/Timespan.h"
include <vector>
namespace Poco {
class Foundation_API PurgeStrategy
The PurgeStrategy is used by FileChannel
to purge archived log files.
{
public:
PurgeStrategy();
virtual ~PurgeStrategy();
virtual void purge(const std::string& path) = 0;
Purges archived log files. The path to the
current "hot" log file is given.
To find archived log files, look for files
with a name consisting of the given path
plus any suffix (e.g., .1, .20050929081500, .1.gz).
A list of archived files can be obtained by calling
the list() method.
protected:
void list(const std::string& path, std::vector<File>& files);
Fills the given vector with a list of archived log
files. The path of the current "hot" log file is
given in path.
All files with the same name as the one given in path,
plus some suffix (e.g., .1, .20050929081500, .1.gz) are
considered archived files.
private:
PurgeStrategy(const PurgeStrategy&);
PurgeStrategy& operator = (const PurgeStrategy&);
};
class Foundation_API PurgeByAgeStrategy: public PurgeStrategy
This purge strategy purges all files that have
exceeded a given age (given in seconds).
{
public:
PurgeByAgeStrategy(const Timespan& age);
~PurgeByAgeStrategy();
void purge(const std::string& path);
private:
Timespan _age;
};
class Foundation_API PurgeByCountStrategy: public PurgeStrategy
This purge strategy ensures that a maximum number
of archived files is not exceeded. Files are deleted
based on their age, with oldest files deleted first.
{
public:
PurgeByCountStrategy(int count);
~PurgeByCountStrategy();
void purge(const std::string& path);
private:
int _count;
};
} // namespace Poco
endif // Foundation_PurgeStrategy_INCLUDED
(C) Æliens
04/09/2009
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