Log4gErrorHandler

Log4gErrorHandler — Delegate error handling

Synopsis

                    Log4gErrorHandler;
                    Log4gErrorHandlerInterface;
void                log4g_error_handler_set_logger      (Log4gErrorHandler *self,
                                                         Log4gLogger *logger);
void                log4g_error_handler_error           (Log4gErrorHandler *self,
                                                         Log4gLoggingEvent *event,
                                                         const gchar *message,
                                                         ...);
void                log4g_error_handler_set_appender    (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);
void                log4g_error_handler_set_backup_appender
                                                        (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);
void                (*Log4gErrorHandlerSetLogger)       (Log4gErrorHandler *self,
                                                         Log4gLogger *logger);
void                (*Log4gErrorHandlerError)           (Log4gErrorHandler *self,
                                                         Log4gLoggingEvent *event,
                                                         const gchar *message,
                                                         va_list ap);
void                (*Log4gErrorHandlerSetAppender)     (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);
void                (*Log4gErrorHandlerSetBackupAppender)
                                                        (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);

Description

Appenders may delegate their error handling via this interface.

Details

Log4gErrorHandler

typedef struct _Log4gErrorHandler Log4gErrorHandler;

Log4gErrorHandlerInterface

typedef struct {
    Log4gErrorHandlerSetLogger set_logger;
    /* note: this definition is here because g-ir-scanner doesn't seem
             to like the Log4gErrorHandlerError definition */
    void
    (*error)(Log4gErrorHandler *self,
            Log4gLoggingEvent *event, const gchar *message, va_list ap);
    Log4gErrorHandlerSetAppender set_appender;
    Log4gErrorHandlerSetBackupAppender set_backup_appender;
} Log4gErrorHandlerInterface;

Log4gErrorHandlerSetLogger set_logger;

Add a reference to a logger with an attached that failed.

error ()

Handle the error (See: Log4gErrorHandlerError).

Log4gErrorHandlerSetAppender set_appender;

Set an appender to handle error messages.

Log4gErrorHandlerSetBackupAppender set_backup_appender;

Set a backup appender in case of failure.

log4g_error_handler_set_logger ()

void                log4g_error_handler_set_logger      (Log4gErrorHandler *self,
                                                         Log4gLogger *logger);

Call the set_logger function for the Log4gErrorHandlerInterface of self.

self :

An error handler object.

logger :

The logger to set for self.

Since 0.1


log4g_error_handler_error ()

void                log4g_error_handler_error           (Log4gErrorHandler *self,
                                                         Log4gLoggingEvent *event,
                                                         const gchar *message,
                                                         ...);

Call the error function from the Log4gErrorHandlerInterface of self.

self :

An error handler object.

event :

The event for which the error occurred.

message :

A printf formatted error message.

... :

Format parameters.

Since 0.1


log4g_error_handler_set_appender ()

void                log4g_error_handler_set_appender    (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);

Call the set_appender function from the Log4gErrorHandlerInterface of self.

self :

An error handler object.

appender :

The appender to set for self.

Since 0.1


log4g_error_handler_set_backup_appender ()

void                log4g_error_handler_set_backup_appender
                                                        (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);

Call the set_backup_appender function from the Log4gErrorHandlerInterface of self.

self :

An error handler object.

appender :

The backup appender to set for self.

Since 0.1


Log4gErrorHandlerSetLogger ()

void                (*Log4gErrorHandlerSetLogger)       (Log4gErrorHandler *self,
                                                         Log4gLogger *logger);

Add a reference to a logger to which the failing appender might be attached.

The failing appender will be searched an replaced only in the loggers you add through this method.

self :

An error handler object.

logger :

The logger to set for self.

Since 0.1


Log4gErrorHandlerError ()

void                (*Log4gErrorHandlerError)           (Log4gErrorHandler *self,
                                                         Log4gLoggingEvent *event,
                                                         const gchar *message,
                                                         va_list ap);

Invoke this function to handler the error.

self :

An error handler object.

event :

The event for which the error occurred.

message :

A printf formatted error message.

ap :

Format parameters.

Since 0.1


Log4gErrorHandlerSetAppender ()

void                (*Log4gErrorHandlerSetAppender)     (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);

Set the appender for which errors are handled.

This function is usually called when the error handler is configured.

self :

An error handler object.

appender :

The appender to set for self.

Since 0.1


Log4gErrorHandlerSetBackupAppender ()

void                (*Log4gErrorHandlerSetBackupAppender)
                                                        (Log4gErrorHandler *self,
                                                         Log4gAppender *appender);

Set the appender to fall back on in case of failure.

self :

An error handler object.

appender :

The backup appender to set for self.

Since 0.1

See Also

Log4gAppenderClass