kcenon::pacs::di::NullLogger Class Reference

No-op logger implementation for default injection. More...

#include <ilogger.h>

Inheritance diagram for kcenon::pacs::di::NullLogger:

Collaboration diagram for kcenon::pacs::di::NullLogger:

Public Member Functions
	NullLogger ()=default
	~NullLogger () override=default
void	trace (std::string_view) override
	Log a trace-level message.
void	debug (std::string_view) override
	Log a debug-level message.
void	info (std::string_view) override
	Log an info-level message.
void	warn (std::string_view) override
	Log a warning-level message.
void	error (std::string_view) override
	Log an error-level message.
void	fatal (std::string_view) override
	Log a fatal-level message.
bool	is_enabled (integration::log_level) const noexcept override
	Check if a log level is enabled.
Public Member Functions inherited from kcenon::pacs::di::ILogger
virtual	~ILogger ()=default
template<typename... Args>
void	trace_fmt (kcenon::pacs::compat::format_string< Args... > fmt, Args &&... args)
	Log a formatted trace-level message.
template<typename... Args>
void	debug_fmt (kcenon::pacs::compat::format_string< Args... > fmt, Args &&... args)
	Log a formatted debug-level message.
template<typename... Args>
void	info_fmt (kcenon::pacs::compat::format_string< Args... > fmt, Args &&... args)
	Log a formatted info-level message.
template<typename... Args>
void	warn_fmt (kcenon::pacs::compat::format_string< Args... > fmt, Args &&... args)
	Log a formatted warning-level message.
template<typename... Args>
void	error_fmt (kcenon::pacs::compat::format_string< Args... > fmt, Args &&... args)
	Log a formatted error-level message.
template<typename... Args>
void	fatal_fmt (kcenon::pacs::compat::format_string< Args... > fmt, Args &&... args)
	Log a formatted fatal-level message.

Additional Inherited Members
Protected Member Functions inherited from kcenon::pacs::di::ILogger
	ILogger ()=default
	ILogger (const ILogger &)=default
ILogger &	operator= (const ILogger &)=default
	ILogger (ILogger &&)=default
ILogger &	operator= (ILogger &&)=default

Detailed Description

No-op logger implementation for default injection.

NullLogger provides a safe default when no logger is configured. All methods are no-ops with minimal overhead.

Usage:

class MyService {
public:
    explicit MyService(std::shared_ptr<ILogger> logger = nullptr)
        : logger_(logger ? std::move(logger) : std::make_shared<NullLogger>())
    {}
private:
    std::shared_ptr<ILogger> logger_;
};

Definition at line 194 of file ilogger.h.

Constructor & Destructor Documentation

NullLogger()

kcenon::pacs::di::NullLogger::NullLogger ( )

default

~NullLogger()

kcenon::pacs::di::NullLogger::~NullLogger ( )

overridedefault

Member Function Documentation

debug()

void kcenon::pacs::di::NullLogger::debug ( std::string_view message )

inlineoverridevirtual

Log a debug-level message.

Parameters

message

The message to log

Implements kcenon::pacs::di::ILogger.

Definition at line 200 of file ilogger.h.

{}

error()

void kcenon::pacs::di::NullLogger::error ( std::string_view message )

inlineoverridevirtual

Log an error-level message.

Parameters

message

The message to log

Implements kcenon::pacs::di::ILogger.

Definition at line 203 of file ilogger.h.

{}

fatal()

void kcenon::pacs::di::NullLogger::fatal ( std::string_view message )

inlineoverridevirtual

Log a fatal-level message.

Parameters

message

The message to log

Implements kcenon::pacs::di::ILogger.

Definition at line 204 of file ilogger.h.

{}

info()

void kcenon::pacs::di::NullLogger::info ( std::string_view message )

inlineoverridevirtual

Log an info-level message.

Parameters

message

The message to log

Implements kcenon::pacs::di::ILogger.

Definition at line 201 of file ilogger.h.

{}

is_enabled()

bool kcenon::pacs::di::NullLogger::is_enabled ( integration::log_level level ) const

inlinenodiscardoverridevirtualnoexcept

Check if a log level is enabled.

Parameters

level

The level to check

Returns

true if messages at this level will be logged

Implements kcenon::pacs::di::ILogger.

Definition at line 206 of file ilogger.h.

                                                                                  {
        return false;
    }

trace()

void kcenon::pacs::di::NullLogger::trace ( std::string_view message )

inlineoverridevirtual

Log a trace-level message.

Parameters

message

The message to log

Implements kcenon::pacs::di::ILogger.

Definition at line 199 of file ilogger.h.

{}

warn()

void kcenon::pacs::di::NullLogger::warn ( std::string_view message )

inlineoverridevirtual

Log a warning-level message.

Parameters

message

The message to log

Implements kcenon::pacs::di::ILogger.

Definition at line 202 of file ilogger.h.

{}

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The documentation for this class was generated from the following file:

• include/kcenon/pacs/di/ilogger.h