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130 lines
3.6 KiB
C++
130 lines
3.6 KiB
C++
//
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// ArchiveStrategy.h
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//
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// $Id: //poco/1.3/Foundation/include/Poco/ArchiveStrategy.h#1 $
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//
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// Library: Foundation
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// Package: Logging
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// Module: FileChannel
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//
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// Definition of the ArchiveStrategy class and subclasses.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_ArchiveStrategy_INCLUDED
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#define Foundation_ArchiveStrategy_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/LogFile.h"
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#include "Poco/File.h"
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#include "Poco/DateTimeFormatter.h"
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namespace Poco {
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class ArchiveCompressor;
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class Foundation_API ArchiveStrategy
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/// The ArchiveStrategy is used by FileChannel
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/// to rename a rotated log file for archiving.
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///
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/// Archived files can be automatically compressed,
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/// using the gzip file format.
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{
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public:
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ArchiveStrategy();
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virtual ~ArchiveStrategy();
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virtual LogFile* archive(LogFile* pFile) = 0;
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/// Renames the given log file for archiving
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/// and creates and returns a new log file.
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/// The given LogFile object is deleted.
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void compress(bool flag = true);
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/// Enables or disables compression of archived files.
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protected:
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void moveFile(const std::string& oldName, const std::string& newName);
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bool exists(const std::string& name);
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private:
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ArchiveStrategy(const ArchiveStrategy&);
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ArchiveStrategy& operator = (const ArchiveStrategy&);
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bool _compress;
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ArchiveCompressor* _pCompressor;
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};
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class Foundation_API ArchiveByNumberStrategy: public ArchiveStrategy
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/// A monotonic increasing number is appended to the
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/// log file name. The most recent archived file
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/// always has the number zero.
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{
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public:
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ArchiveByNumberStrategy();
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~ArchiveByNumberStrategy();
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LogFile* archive(LogFile* pFile);
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};
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template<class DT>
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class ArchiveByTimestampStrategy: public ArchiveStrategy
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/// A timestamp (YYYYMMDDhhmmss) is appended to archived
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/// log files.
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{
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public:
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ArchiveByTimestampStrategy()
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{
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}
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~ArchiveByTimestampStrategy()
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{
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}
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LogFile* archive(LogFile* pFile)
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{
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std::string path = pFile->path();
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delete pFile;
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std::string archPath = path;
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archPath.append(".");
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archPath.append(DateTimeFormatter::format(DT().timestamp(), "%Y%m%d%H%M%S"));
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moveFile(path, archPath);
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return new LogFile(path);
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}
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};
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} // namespace Poco
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#endif // Foundation_ArchiveStrategy_INCLUDED
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