Logging Service

Overview

Note developers can plug into rDSN their own logging libraryS implementation, so as to integrate rDSN logs into their own cluster operation systems.

Macros
#define	dlog(level, title, ...)
#define	dinfo(...)   dlog(LOG_LEVEL_INFORMATION, __TITLE__, __VA_ARGS__)
#define	ddebug(...)   dlog(LOG_LEVEL_DEBUG, __TITLE__, __VA_ARGS__)
#define	dwarn(...)   dlog(LOG_LEVEL_WARNING, __TITLE__, __VA_ARGS__)
#define	derror(...)   dlog(LOG_LEVEL_ERROR, __TITLE__, __VA_ARGS__)
#define	dfatal(...)   dlog(LOG_LEVEL_FATAL, __TITLE__, __VA_ARGS__)
#define	dassert(x, ...)
#define	dbg_dassert   dassert

Typedefs
typedef enum dsn_log_level_t	dsn_log_level_t

Enumerations
enum	dsn_log_level_t {   LOG_LEVEL_INFORMATION, LOG_LEVEL_DEBUG, LOG_LEVEL_WARNING, LOG_LEVEL_ERROR,   LOG_LEVEL_FATAL, LOG_LEVEL_COUNT, LOG_LEVEL_INVALID }

Functions
DSN_API dsn_log_level_t	dsn_log_get_start_level ()
DSN_API void	dsn_logv (const char *file, const char *function, const int line, dsn_log_level_t log_level, const char *title, const char *fmt, va_list args)
DSN_API void	dsn_logf (const char *file, const char *function, const int line, dsn_log_level_t log_level, const char *title, const char *fmt,...)
DSN_API void	dsn_log (const char *file, const char *function, const int line, dsn_log_level_t log_level, const char *title)
DSN_API void	dsn_coredump ()

Variables
DSN_API dsn_log_level_t	dsn_log_start_level

Macro Definition Documentation

#define dlog	(		level,
			title,
			...
	)

Value:

do {if (level >= dsn_log_start_level) \
        dsn_logf(__FILE__, __FUNCTION__, __LINE__, level, title, __VA_ARGS__); } while(false)

#define dassert	(		x,
			...
	)

Value:

do { if (!(x)) {                    \
            dlog(LOG_LEVEL_FATAL, __FILE__, "assertion expression: "#x); \
            dlog(LOG_LEVEL_FATAL, __FILE__, __VA_ARGS__);  \
            dsn_coredump();       \
                } } while (false)