LOGGING: logging to console, to file, to syslog, to event log

Data Structures
struct	TS_LOG
	ThreadSafe LOGging structure. More...

Macros
#define	LOG_ALERT   1
	action must be taken immediately
#define	LOG_CRIT   2
	critical conditions
#define	LOG_DEBUG   7
	debug-level messages
#define	LOG_EMERG   0
	system is unusable
#define	LOG_ERR   3
	error conditions
#define	LOG_FILE   -3
	internal, logging to file
#define	LOG_INFO   6
	informational
#define	LOG_NOTICE   5
	normal but significant condition
#define	LOG_NULL   -1
	no log output
#define	LOG_STDERR   -4
	internal, default LOG_TYPE
#define	LOG_SYSJRNL   100
	to sysjrnl
#define	LOG_WARNING   4
	warning conditions
#define	n_log(__LEVEL__, ...)
	Logging function wrapper to get line and func.

Functions
void	_n_log (int level, const char *file, const char *func, int line, const char *format,...)
	Logging function.
int	close_safe_logging (TS_LOG *log)
	close a thread-safe logging file
void	close_sysjrnl (void)
	Close syslog connection or clean internals for event log.
FILE *	get_log_file (void)
	return the current log_file
int	get_log_level (void)
	Get the global log level value.
int	open_safe_logging (TS_LOG **log, char *pathname, char *opt)
	Open a thread-safe logging file.
char *	open_sysjrnl (char *identity)
	Open connection to syslog or create internals for event log.
int	set_log_file (char *file)
	Set the logging to a file instead of stderr.
void	set_log_level (const int log_level)
	Set the global log level value ( static int LOG_LEVEL )
int	write_safe_log (TS_LOG *log, char *pat,...)
	write to a thread-safe logging file

Detailed Description

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Data Structure Documentation

TS_LOG

struct TS_LOG

ThreadSafe LOGging structure.

Examples

ex_log.c.

Definition at line 76 of file n_log.h.

Collaboration diagram for TS_LOG:

Data Fields
FILE *	file	File handler.
pthread_mutex_t	LOG_MUTEX	mutex for thread-safe writting

Macro Definition Documentation

LOG_ALERT

#define LOG_ALERT   1

action must be taken immediately

Examples

ex_log.c.

Definition at line 53 of file n_log.h.

LOG_CRIT

#define LOG_CRIT   2

critical conditions

Examples

ex_log.c.

Definition at line 55 of file n_log.h.

LOG_DEBUG

#define LOG_DEBUG   7

debug-level messages

Examples

ex_base64.c, ex_common.c, ex_configfile.c, ex_crypto.c, ex_exceptions.c, ex_fluid.c, ex_gui.c, ex_gui_dictionary.c, ex_gui_particles.c, ex_hash.c, ex_kafka.c, ex_list.c, ex_log.c, ex_monolith.c, ex_network.c, ex_network.h, ex_network_ssl.c, ex_nstr.c, ex_pcre.c, ex_signals.c, ex_stack.c, ex_threads.c, and ex_trees.c.

Definition at line 65 of file n_log.h.

LOG_EMERG

#define LOG_EMERG   0

system is unusable

Examples

ex_log.c.

Definition at line 51 of file n_log.h.

LOG_ERR

#define LOG_ERR   3

error conditions

Examples

ex_common.c, ex_configfile.c, ex_crypto.c, ex_fluid.c, ex_fluid_config.c, ex_gui.c, ex_gui_dictionary.c, ex_gui_particles.c, ex_hash.c, ex_kafka.c, ex_list.c, ex_log.c, ex_network.c, ex_network.h, ex_network_ssl.c, ex_pcre.c, ex_stack.c, ex_threads.c, and ex_trees.c.

Definition at line 57 of file n_log.h.

LOG_FILE

#define LOG_FILE   -3

internal, logging to file

Definition at line 29 of file n_log.h.

LOG_INFO

#define LOG_INFO   6

informational

Examples

ex_common.c, ex_configfile.c, ex_crypto.c, ex_exceptions.c, ex_fluid.c, ex_fluid_config.c, ex_gui.c, ex_gui_dictionary.c, ex_gui_particles.c, ex_hash.c, ex_kafka.c, ex_list.c, ex_log.c, ex_network.c, ex_network_ssl.c, ex_nstr.c, ex_pcre.c, ex_stack.c, ex_threads.c, and ex_trees.c.

Definition at line 63 of file n_log.h.

LOG_NOTICE

#define LOG_NOTICE   5

normal but significant condition

Examples

ex_base64.c, ex_common.c, ex_crypto.c, ex_exceptions.c, ex_fluid.c, ex_gui.c, ex_gui_dictionary.c, ex_gui_particles.c, ex_kafka.c, ex_list.c, ex_log.c, ex_network.c, ex_network.h, ex_network_ssl.c, ex_stack.c, ex_threads.c, and ex_trees.c.

Definition at line 61 of file n_log.h.

LOG_NULL

#define LOG_NULL   -1

no log output

Examples

ex_common.c, ex_crypto.c, ex_kafka.c, ex_log.c, ex_network.c, ex_network_ssl.c, ex_stack.c, ex_threads.c, and ex_trees.c.

Definition at line 27 of file n_log.h.

LOG_STDERR

#define LOG_STDERR   -4

internal, default LOG_TYPE

Examples

ex_exceptions.c, ex_pcre.c, and ex_signals.c.

Definition at line 31 of file n_log.h.

LOG_SYSJRNL

#define LOG_SYSJRNL   100

to sysjrnl

Definition at line 33 of file n_log.h.

LOG_WARNING

#define LOG_WARNING   4

warning conditions

Examples

ex_log.c.

Definition at line 59 of file n_log.h.

n_log

#define n_log	(		__LEVEL__,
			...
	)

Value:

    do {                                                              \
        _n_log(__LEVEL__, __FILE__, __func__, __LINE__, __VA_ARGS__); \
    } while (0)

Logging function wrapper to get line and func.

Examples

ex_base64.c, ex_common.c, ex_configfile.c, ex_crypto.c, ex_exceptions.c, ex_fluid.c, ex_fluid_config.c, ex_gui.c, ex_gui_dictionary.c, ex_gui_particles.c, ex_hash.c, ex_kafka.c, ex_list.c, ex_log.c, ex_network.c, ex_network.h, ex_network_ssl.c, ex_nstr.c, ex_pcre.c, ex_signals.c, ex_stack.c, and ex_threads.c.

Definition at line 70 of file n_log.h.

Function Documentation

_n_log()

void _n_log	(	int	level,
		const char *	file,
		const char *	func,
		int	line,
		const char *	format,
			...
	)

Logging function.

log( level , const char *format , ... ) is a macro around _log

Parameters

level	Logging level
file	File containing the emmited log
func	Function emmiting the log
line	Line of the log
format	Format and string of the log, printf style

Definition at line 244 of file n_log.c.

References COLOR_BLUE, COLOR_CYAN, COLOR_GREEN, COLOR_MAGENTA, COLOR_RED, COLOR_RESET, COLOR_WHITE, COLOR_YELLOW, FreeNoLog, get_log_level(), LOG_ALERT, LOG_CRIT, LOG_DEBUG, LOG_EMERG, LOG_ERR, log_file, LOG_INFO, log_level, LOG_NOTICE, LOG_NULL, LOG_SYSJRNL, LOG_TYPE, LOG_WARNING, Malloc, prioritynames, proc_name, terminal_support_colors, and vasprintf().

Referenced by _n_nodup_log(), and _n_nodup_log_indexed().

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close_safe_logging()

int close_safe_logging

(

TS_LOG *

log

)

close a thread-safe logging file

Parameters

log	A TS_LOG handler

Returns

TRUE on success, FALSE on error

Definition at line 432 of file n_log.c.

References TS_LOG::file, and TS_LOG::LOG_MUTEX.

Referenced by main().

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close_sysjrnl()

void close_sysjrnl

(

void

)

Close syslog connection or clean internals for event log.

Definition at line 93 of file n_log.c.

References FreeNoLog, and proc_name.

get_log_file()

FILE * get_log_file

(

void

)

return the current log_file

Returns

a valid FILE handle or NULL

Definition at line 174 of file n_log.c.

References log_file.

Referenced by main().

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get_log_level()

int get_log_level

(

void

)

Get the global log level value.

Returns

static int LOG_LEVEL

Definition at line 142 of file n_log.c.

References LOG_LEVEL.

Referenced by _n_log().

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open_safe_logging()

int open_safe_logging	(	TS_LOG **	log,
		char *	pathname,
		char *	opt
	)

Open a thread-safe logging file.

Parameters

log	A TS_LOG handler
pathname	The file path (if any) and name
opt	Options for opening (please never forget to use "w")

Returns

TRUE on success , FALSE on error , -1000 if already open

Definition at line 338 of file n_log.c.

References _str, TS_LOG::file, LOG_ERR, Malloc, and n_log.

Referenced by main().

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open_sysjrnl()

char * open_sysjrnl

(

char *

identity

)

Open connection to syslog or create internals for event log.

Parameters

identity

Tag for syslog or NULL to use argv[0]

Returns

NULL or identity if success

Definition at line 77 of file n_log.c.

References __n_assert, and proc_name.

set_log_file()

int set_log_file

(

char *

file

)

Set the logging to a file instead of stderr.

Parameters

file	The filename where to log

Returns

TRUE or FALSE

Definition at line 151 of file n_log.c.

References __n_assert, _str, LOG_ERR, LOG_FILE, log_file, n_log, and set_log_level().

Referenced by main(), and main().

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set_log_level()

void set_log_level

(

const int

log_level

)

Set the global log level value ( static int LOG_LEVEL )

Parameters

log_level

Log level value. Supported: NOLOG,LOG_NOTICE/INFO/ERR/DEBUG,LOG_FILE/STDERR/SYSJRNL

Definition at line 104 of file n_log.c.

References LOG_FILE, log_level, LOG_LEVEL, LOG_STDERR, LOG_SYSJRNL, LOG_TYPE, and terminal_support_colors.

Referenced by main(), main(), main(), process_args(), process_args(), process_args(), and set_log_file().

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write_safe_log()

int write_safe_log	(	TS_LOG *	log,
		char *	pat,
			...
	)

write to a thread-safe logging file

Parameters

log	A TS_LOG handler
pat	Pattern for writting (i.e "%d %d %s")

Returns

TRUE on success, FALSE on error

Definition at line 404 of file n_log.c.

References TS_LOG::file, and TS_LOG::LOG_MUTEX.

Referenced by main().

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