log_sink_syseventlog.cc File Reference

#include <mysql/components/services/log_builtins.h>
#include "log_service_imp.h"
#include "m_string.h"
#include "my_compiler.h"
#include "my_io.h"
#include "my_sys.h"
#include "mysqld_error.h"
#include <mysql/components/component_implementation.h>
#include <mysql/components/service_implementation.h>
#include <mysql/components/services/component_sys_var_service.h>
#include <mysql/components/services/mysql_system_variable.h>
#include "../sql/set_var.h"
#include <syslog.h>

Classes
struct	SYSLOG_FACILITY

Macros
#define	LOG_DAEMON_NAME   "daemon"
#define	OPT_FAC   "facility"
#define	OPT_PID   "include_pid"
#define	OPT_TAG   "tag"
#define	LOG_TYPE   "syslog"
#define	MAX_FAC_LEN   32
#define	MAX_TAG_LEN   32
#define	PREFIX   "mysqld"
#define	MY_NAME   "syseventlog"

Functions
	REQUIRES_SERVICE_PLACEHOLDER (component_sys_variable_register)
	REQUIRES_SERVICE_PLACEHOLDER (component_sys_variable_unregister)
	REQUIRES_SERVICE_PLACEHOLDER (mysql_system_variable_reader)
	REQUIRES_SERVICE_PLACEHOLDER (log_builtins)
	REQUIRES_SERVICE_PLACEHOLDER (log_builtins_string)
	REQUIRES_SERVICE_PLACEHOLDER (log_builtins_syseventlog)
	STR_CHECK_ARG (tag) values_tag
	syslog default tag More...
	STR_CHECK_ARG (fac) values_fac
	syslog default facility More...
	BOOL_CHECK_ARG (pid) values_pid
	syslog default PID state More...
static bool	log_syslog_find_facility (const char *f, SYSLOG_FACILITY *rsf)
	On being handed a syslog facility name tries to look it up. More...
static int	log_syslog_close ()
	Close POSIX syslog / Windows EventLog. More...
int	log_syslog_open ()
	Open POSIX syslog / Windows EventLog. More...
static void	log_syslog_reopen ()
	Syslog settings have changed; close and re-open. More...
void	log_syslog_exit (void)
	Stop using syslog / EventLog. More...
static int	var_check_tag (const char *tag)
	Internal state: Validate new tag to log under. More...
static int	var_update_tag (const char *tag)
	Internal state: Update tag to log under. More...
static int	var_check_fac (const char *fac)
	Internal state: Validate facility to log under. More...
static int	var_update_fac (char *fac)
	Internal state: Update facility to log under May change facility to its canonical representation if needed. More...
static int	var_update_pid (bool inc_pid)
	Internal state: Toggle inclusion of process ID (pid) More...
static int	sysvar_check_tag (MYSQL_THD thd, SYS_VAR *self, void *save, struct st_mysql_value *value)
	System-variable: Check proposed value for component variable controlling tag to log under. More...
static void	sysvar_update_tag (MYSQL_THD thd, SYS_VAR *self, void *var_ptr, const void *save)
	System-variable: Update value of component variable controlling tag to log under Updates internal state as needed. More...
static int	sysvar_install_tag (void)
	Set up system variable containing the tag to log under (for ident). More...
static int	sysvar_check_fac (MYSQL_THD thd, SYS_VAR *self, void *save, struct st_mysql_value *value)
	System-variable: Check proposed value for component variable controlling facility to log under. More...
static void	sysvar_update_fac (MYSQL_THD thd, SYS_VAR *self, void *var_ptr, const void *save)
	System-variable: Update value of component variable controlling facilty to log under Updates internal state as needed. More...
static int	sysvar_install_fac (void)
	Set up system variable containing the tag to log under (for ident). More...
static void	sysvar_update_pid (MYSQL_THD thd, SYS_VAR *self, void *var_ptr, const void *save)
	System-variable: Update value of component variable governing inclusion of process ID (pid) Updates internal state as needed. More...
static int	sysvar_install_pid (void)
mysql_service_status_t	log_service_exit ()
	De-initialization method for Component used when unloading the Component. More...
mysql_service_status_t	log_service_init ()
	Initialization entry method for Component used when loading the Component. More...
	PROVIDES_SERVICE (log_sink_syseventlog, log_service)
	END_COMPONENT_PROVIDES ()
	REQUIRES_SERVICE (component_sys_variable_register)
	REQUIRES_SERVICE (component_sys_variable_unregister)
	REQUIRES_SERVICE (mysql_system_variable_reader)
	REQUIRES_SERVICE (log_builtins)
	REQUIRES_SERVICE (log_builtins_string)
	REQUIRES_SERVICE (log_builtins_syseventlog)
	END_COMPONENT_REQUIRES ()
	METADATA ("mysql.author", "Oracle Corporation")
	METADATA ("mysql.license", "GPL")
	METADATA ("log_service_type", "sink")
	END_COMPONENT_METADATA ()

Variables
static SYSLOG_FACILITY	syslog_facility []
static bool	inited = false
	component initialized More...
const mysql_service_log_builtins_t *	log_bi = nullptr
	accessor built-ins More...
const mysql_service_log_builtins_string_t *	log_bs = nullptr
	string built-ins More...
const mysql_service_log_builtins_syseventlog_t *	log_se = nullptr
static int	log_syslog_facility = LOG_DAEMON
	facility we're syslogging to More...
static bool	log_syslog_include_pid = true
	log process ID More...
static char *	log_syslog_ident = nullptr
	ident we're using (see "tag") More...
static bool	log_syslog_enabled = false
	logging engaged More...
static char *	buffer_tag = nullptr
	sysvar containing tag, if any More...
static char *	buffer_fac = nullptr
	sysvar containing fac, if any More...
const mysql_service_log_service_t	imp_log_sink_syseventlog_log_service
mysql_component_t	mysql_component_log_sink_syseventlog

Macro Definition Documentation

LOG_DAEMON_NAME

#define LOG_DAEMON_NAME   "daemon"

LOG_TYPE

#define LOG_TYPE   "syslog"

MAX_FAC_LEN

#define MAX_FAC_LEN   32

MAX_TAG_LEN

#define MAX_TAG_LEN   32

MY_NAME

#define MY_NAME   "syseventlog"

OPT_FAC

#define OPT_FAC   "facility"

OPT_PID

#define OPT_PID   "include_pid"

OPT_TAG

#define OPT_TAG   "tag"

PREFIX

#define PREFIX   "mysqld"

Function Documentation

BOOL_CHECK_ARG()

BOOL_CHECK_ARG

(

pid

)

syslog default PID state

END_COMPONENT_METADATA()

END_COMPONENT_METADATA

(

)

END_COMPONENT_PROVIDES()

END_COMPONENT_PROVIDES

(

)

END_COMPONENT_REQUIRES()

END_COMPONENT_REQUIRES

(

)

log_service_exit()

mysql_service_status_t log_service_exit

(

)

De-initialization method for Component used when unloading the Component.

Returns

Status of performed operation

Return values

false	success
true	failure

log_service_init()

mysql_service_status_t log_service_init

(

)

Initialization entry method for Component used when loading the Component.

Returns

Status of performed operation

Return values

false	success
true	failure

log_syslog_close()

static int log_syslog_close ( )

static

Close POSIX syslog / Windows EventLog.

Return values

0	On Success.
!=0	On failure.

log_syslog_exit()

void log_syslog_exit

(

void

)

Stop using syslog / EventLog.

Call as late as possible.

log_syslog_find_facility()

static bool log_syslog_find_facility ( const char *  f, SYSLOG_FACILITY *  rsf  )

static

On being handed a syslog facility name tries to look it up.

If successful, fills in a struct with the facility ID and the facility's canonical name.

Parameters

	f	Name of the facility we're trying to look up. Lookup is case-insensitive; leading "log_" is ignored.
[out]	rsf	A buffer in which to return the ID and canonical name.

Return values

false	No errors; buffer contains valid result
true	Something went wrong, no valid result set returned

log_syslog_open()

int log_syslog_open

(

)

Open POSIX syslog / Windows EventLog.

Return values

-3	log already open, close it before opening again! (log still open)
-2	cannot set up new registry entry, continuing with previous value (log still open, but continues to log under previous key)
-1	cannot set up new registry entry, no previous value (log not opened)
0	success (log opened)

log_syslog_reopen()

static void log_syslog_reopen ( )

static

Syslog settings have changed; close and re-open.

METADATA() [1/3]

METADATA	(	"log_service_type"	,
		"sink"
	)

METADATA() [2/3]

METADATA	(	"mysql.author"	,
		"Oracle Corporation"
	)

METADATA() [3/3]

METADATA	(	"mysql.license"	,
		"GPL"
	)

PROVIDES_SERVICE()

PROVIDES_SERVICE	(	log_sink_syseventlog	,
		log_service
	)

REQUIRES_SERVICE() [1/6]

REQUIRES_SERVICE

(

component_sys_variable_register

)

REQUIRES_SERVICE() [2/6]

REQUIRES_SERVICE

(

component_sys_variable_unregister

)

REQUIRES_SERVICE() [3/6]

REQUIRES_SERVICE

(

log_builtins

)

REQUIRES_SERVICE() [4/6]

REQUIRES_SERVICE

(

log_builtins_string

)

REQUIRES_SERVICE() [5/6]

REQUIRES_SERVICE

(

log_builtins_syseventlog

)

REQUIRES_SERVICE() [6/6]

REQUIRES_SERVICE

(

mysql_system_variable_reader

)

REQUIRES_SERVICE_PLACEHOLDER() [1/6]

REQUIRES_SERVICE_PLACEHOLDER

(

component_sys_variable_register

)

REQUIRES_SERVICE_PLACEHOLDER() [2/6]

REQUIRES_SERVICE_PLACEHOLDER

(

component_sys_variable_unregister

)

REQUIRES_SERVICE_PLACEHOLDER() [3/6]

REQUIRES_SERVICE_PLACEHOLDER

(

log_builtins

)

REQUIRES_SERVICE_PLACEHOLDER() [4/6]

REQUIRES_SERVICE_PLACEHOLDER

(

log_builtins_string

)

REQUIRES_SERVICE_PLACEHOLDER() [5/6]

REQUIRES_SERVICE_PLACEHOLDER

(

log_builtins_syseventlog

)

REQUIRES_SERVICE_PLACEHOLDER() [6/6]

REQUIRES_SERVICE_PLACEHOLDER

(

mysql_system_variable_reader

)

STR_CHECK_ARG() [1/2]

STR_CHECK_ARG

(

fac

)

syslog default facility

STR_CHECK_ARG() [2/2]

STR_CHECK_ARG

(

tag

)

syslog default tag

sysvar_check_fac()

static int sysvar_check_fac ( MYSQL_THD  thd, SYS_VAR *  self, void *  save, struct st_mysql_value *  value  )

static

System-variable: Check proposed value for component variable controlling facility to log under.

Queries internal state as needed.

Parameters

thd	session
self	the system variable we're checking
save	where to save the resulting intermediate (char *) value
value	the value we're validating

Return values

false	value OK, go ahead and update system variable (from "save")
true	value rejected, do not update variable

sysvar_check_tag()

static int sysvar_check_tag ( MYSQL_THD  thd, SYS_VAR *  self, void *  save, struct st_mysql_value *  value  )

static

System-variable: Check proposed value for component variable controlling tag to log under.

Queries internal state as needed.

Parameters

thd	session
self	the system variable we're checking
save	where to save the resulting intermediate (char *) value
value	the value we're validating

Return values

false	value OK, go ahead and update system variable (from "save")
true	value rejected, do not update variable

sysvar_install_fac()

static int sysvar_install_fac ( void  )

static

Set up system variable containing the tag to log under (for ident).

Return values

0	success
-1	failure

sysvar_install_pid()

static int sysvar_install_pid ( void  )

static

sysvar_install_tag()

static int sysvar_install_tag ( void  )

static

Set up system variable containing the tag to log under (for ident).

Return values

0	success
-1	failure

sysvar_update_fac()

static void sysvar_update_fac ( MYSQL_THD  thd, SYS_VAR *  self, void *  var_ptr, const void *  save  )

static

System-variable: Update value of component variable controlling facilty to log under Updates internal state as needed.

Parameters

thd	session
self	the system variable we're changing
var_ptr	where to save the resulting (char *) value
save	pointer to the new value (from check function)

sysvar_update_pid()

static void sysvar_update_pid ( MYSQL_THD  thd, SYS_VAR *  self, void *  var_ptr, const void *  save  )

static

System-variable: Update value of component variable governing inclusion of process ID (pid) Updates internal state as needed.

Parameters

thd	session
self	the system variable we're changing
var_ptr	where to save the resulting (char *) value
save	pointer to the new value (from check function)

sysvar_update_tag()

static void sysvar_update_tag ( MYSQL_THD  thd, SYS_VAR *  self, void *  var_ptr, const void *  save  )

static

System-variable: Update value of component variable controlling tag to log under Updates internal state as needed.

Parameters

thd	session
self	the system variable we're changing
var_ptr	where to save the resulting (char *) value
save	pointer to the new value (from check function)

var_check_fac()

static int var_check_fac ( const char *  fac )

static

Internal state: Validate facility to log under.

Parameters

fac	a string containing the facility

Return values

0	no complaints
-1	unknown facility
-2	facility name exceeds buffer

var_check_tag()

static int var_check_tag ( const char *  tag )

static

Internal state: Validate new tag to log under.

Parameters

tag	a string containing the tag

Return values

0	no complaints
-1	no argument
1	invalid argument

var_update_fac()

static int var_update_fac ( char *  fac )

static

Internal state: Update facility to log under May change facility to its canonical representation if needed.

Parameters

fac	new facility to log under

Return values

0

success

var_update_pid()

static int var_update_pid ( bool  inc_pid )

static

Internal state: Toggle inclusion of process ID (pid)

Parameters

inc_pid

include PID?

Return values

0

success

var_update_tag()

static int var_update_tag ( const char *  tag )

static

Internal state: Update tag to log under.

Parameters

tag	new tag to log under (will be appended to PREFIX)

Return values

0	success
-1	EINVAL
-2	out of memory

Variable Documentation

buffer_fac

char* buffer_fac = nullptr

static

sysvar containing fac, if any

buffer_tag

char* buffer_tag = nullptr

static

sysvar containing tag, if any

imp_log_sink_syseventlog_log_service

const mysql_service_log_service_t imp_log_sink_syseventlog_log_service

Initial value:

= {
log_service_imp::run, log_service_imp::flush, log_service_imp::open,
    log_service_imp::close, log_service_imp::characteristics, nullptr,
    nullptr }

inited

bool inited = false

static

component initialized

log_bi

const mysql_service_log_builtins_t* log_bi = nullptr

accessor built-ins

log_bs

const mysql_service_log_builtins_string_t* log_bs = nullptr

string built-ins

log_se

const mysql_service_log_builtins_syseventlog_t* log_se = nullptr

log_syslog_enabled

bool log_syslog_enabled = false

static

logging engaged

log_syslog_facility

int log_syslog_facility = LOG_DAEMON

static

facility we're syslogging to

log_syslog_ident

char* log_syslog_ident = nullptr

static

ident we're using (see "tag")

log_syslog_include_pid

bool log_syslog_include_pid = true

static

log process ID

mysql_component_log_sink_syseventlog

mysql_component_t mysql_component_log_sink_syseventlog

Initial value:

= {    "mysql:log_sink_syseventlog" , __log_sink_syseventlog_provides, __log_sink_syseventlog_requires,   __log_sink_syseventlog_metadata,
log_service_init, log_service_exit }

syslog_facility

SYSLOG_FACILITY syslog_facility[]

static