ClickHouse/contrib/libpoco/Foundation/include/Poco/LoggingFactory.h

96 lines
2.4 KiB
C++

//
// LoggingFactory.h
//
// $Id: //poco/1.4/Foundation/include/Poco/LoggingFactory.h#1 $
//
// Library: Foundation
// Package: Logging
// Module: LoggingFactory
//
// Definition of the LoggingFactory class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_LoggingFactory_INCLUDED
#define Foundation_LoggingFactory_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/DynamicFactory.h"
#include "Poco/Channel.h"
#include "Poco/Formatter.h"
namespace Poco {
class Foundation_API LoggingFactory
/// An extensible factory for channels and formatters.
///
/// The following channel classes are pre-registered:
/// - AsyncChannel
/// - ConsoleChannel
/// - EventLogChannel (Windows platforms only)
/// - FileChannel
/// - FormattingChannel
/// - NullChannel
/// - OpcomChannel (OpenVMS only)
/// - SplitterChannel
/// - SyslogChannel (Unix platforms only)
///
/// The following formatter classes are pre-registered:
/// - PatternFormatter
{
public:
typedef AbstractInstantiator<Channel> ChannelInstantiator;
typedef AbstractInstantiator<Formatter> FormatterFactory;
LoggingFactory();
/// Creates the LoggingFactory.
///
/// Automatically registers class factories for the
/// built-in channel and formatter classes.
~LoggingFactory();
/// Destroys the LoggingFactory.
void registerChannelClass(const std::string& className, ChannelInstantiator* pFactory);
/// Registers a channel class with the LoggingFactory.
void registerFormatterClass(const std::string& className, FormatterFactory* pFactory);
/// Registers a formatter class with the LoggingFactory.
Channel* createChannel(const std::string& className) const;
/// Creates a new Channel instance from specified class.
///
/// Throws a NotFoundException if the specified channel class
/// has not been registered.
Formatter* createFormatter(const std::string& className) const;
/// Creates a new Formatter instance from specified class.
///
/// Throws a NotFoundException if the specified formatter class
/// has not been registered.
static LoggingFactory& defaultFactory();
/// Returns a reference to the default
/// LoggingFactory.
private:
void registerBuiltins();
DynamicFactory<Channel> _channelFactory;
DynamicFactory<Formatter> _formatterFactory;
};
} // namespace Poco
#endif // Foundation_LoggingFactory_INCLUDED