ib::logger Class Reference

The class logger is the base class of all the error log related classes. More...

#include <ut0log.h>

Inheritance diagram for ib::logger:

Public Member Functions
virtual	~logger ()
	Destructor. More...
template<class... Args>
logger &	log (int err, Args &&...args)
	Format an error message. More...
template<typename T >
logger &	operator<< (const T &rhs)
std::ostream &	write (const char *buf, std::streamsize count)
	Write the given buffer to the internal string stream object. More...
std::ostream &	write (const unsigned char *buf, std::streamsize count)
	Write the given buffer to the internal string stream object. More...

Public Attributes
std::ostringstream	m_oss
	For converting the message into a string. More...
int	m_err {}
	Error code in errmsg-*.txt. More...
loglevel	m_level {INFORMATION_LEVEL}
	Error logging level. More...

Protected Member Functions
void	log_event (std::string msg)
	Uses LogEvent to report the log entry, using provided message. More...
	logger (loglevel level, int err)
	Constructor. More...
template<class... Args>
	logger (loglevel level, int err, Args &&...args)
	Constructor. More...
	logger (loglevel level)
	Constructor. More...

Static Protected Member Functions
template<class... Args>
static std::string	msg (int err, Args &&...args)
	Format an error message. More...

Detailed Description

The class logger is the base class of all the error log related classes.

It contains a std::ostringstream object. The main purpose of this class is to forward operator<< to the underlying std::ostringstream object. Do not use this class directly, instead use one of the derived classes.

Constructor & Destructor Documentation

~logger()

ib::logger::~logger ( )

virtual

Destructor.

logger() [1/3]

ib::logger::logger ( loglevel  level, int  err  )

inlineprotected

Constructor.

Parameters

[in]	level	Logging level
[in]	err	Error message code.

logger() [2/3]

template<class... Args>

ib::logger::logger ( loglevel  level, int  err, Args &&...  args  )

inlineexplicitprotected

Constructor.

Parameters

[in]	level	Logging level
[in]	err	Error message code.
[in]	args	Variable length argument list

logger() [3/3]

ib::logger::logger ( loglevel  level )

inlineexplicitprotected

Constructor.

Parameters

[in]

level

Log error level

Member Function Documentation

log()

template<class... Args>

logger & ib::logger::log ( int  err, Args &&...  args  )

inline

Format an error message.

Parameters

[in]	err	Error code from errmsg-*.txt.
[in]	args	Variable length argument list

log_event()

void ib::logger::log_event ( std::string  msg )

protected

Uses LogEvent to report the log entry, using provided message.

Parameters

[in]

msg

message to be logged

msg()

template<class... Args>

static std::string ib::logger::msg ( int  err, Args &&...  args  )

inlinestaticprotected

Format an error message.

Parameters

[in]	err	Error code from errmsg-*.txt.
[in]	args	Variable length argument list

operator<<()

template<typename T >

logger & ib::logger::operator<< ( const T &  rhs )

inline

write() [1/2]

std::ostream & ib::logger::write ( const char *  buf, std::streamsize  count  )

inline

Write the given buffer to the internal string stream object.

Parameters

[in]	buf	the buffer contents to log.
[in]	count	the length of the buffer buf.

Returns

the output stream into which buffer was written.

write() [2/2]

std::ostream & ib::logger::write ( const unsigned char *  buf, std::streamsize  count  )

inline

Write the given buffer to the internal string stream object.

Parameters

[in]	buf	the buffer contents to log
[in]	count	the length of the buffer buf.

Returns

the output stream into which buffer was written.

Member Data Documentation

m_err

int ib::logger::m_err {}

Error code in errmsg-*.txt.

m_level

loglevel ib::logger::m_level {INFORMATION_LEVEL}

Error logging level.

m_oss

std::ostringstream ib::logger::m_oss

For converting the message into a string.

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

• storage/innobase/include/ut0log.h
• storage/innobase/ut/ut0ut.cc