mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 03:53:41 +00:00
b79ead9c84
* Replicate poco into base/poco/ * De-register poco submodule * Build poco from ClickHouse * Exclude poco from stylecheck * Exclude poco from whitespace check * Exclude poco from typo check * Remove x bit from sources/headers (the style check complained) * Exclude poco from duplicate include check * Fix fasttest * Remove contrib/poco-cmake/* * Simplify poco build descriptions * Remove poco stuff not used by ClickHouse * Glob poco sources * Exclude poco from clang-tidy
108 lines
2.5 KiB
C++
108 lines
2.5 KiB
C++
//
|
|
// PurgeStrategy.h
|
|
//
|
|
// Library: Foundation
|
|
// Package: Logging
|
|
// Module: FileChannel
|
|
//
|
|
// Definition of the PurgeStrategy class.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#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;
|
|
};
|
|
|
|
|
|
class Foundation_API PurgeOneFileStrategy: public PurgeStrategy
|
|
/// This purge strategy unconditionally purges one oldest file.
|
|
/// If there are no archived files, it will truncate current "hot" log file.
|
|
/// Intended usage: when there are no space left on device with logs.
|
|
{
|
|
public:
|
|
void purge(const std::string& path);
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_PurgeStrategy_INCLUDED
|