DOKK / manpages / debian 11 / liblog4tango-doc / log4tango::FileAppender.3.en
log4tango::FileAppender(3) log4tango log4tango::FileAppender(3)

log4tango::FileAppender

#include <FileAppender.hh>

Inherits log4tango::LayoutAppender.

Inherited by log4tango::RollingFileAppender.


FileAppender (const std::string &name, const std::string &fileName, bool append=true, mode_t mode=00644)
Constructs a FileAppender. FileAppender (const std::string &name, int fd)
Constructs a FileAppender to an already open file descriptor. virtual ~FileAppender ()
Destructor. virtual bool reopen (void)
Reopens the logfile. virtual void close (void)
Closes the logfile. virtual bool is_valid (void) const
Check if the appender is valid. virtual void set_append (bool append)
Sets the append vs truncate flag. virtual bool get_append (void) const
Gets the value of the 'append' option. virtual void set_mode (mode_t mode)
Sets the file open mode. virtual mode_t get_mode () const
Gets the file open mode.


virtual int _append (const LoggingEvent &event)
Log in Appender specific way.


const std::string _file_name
int _fd
int _flags
mode_t _mode

Constructs a FileAppender.

Parameters

name the name of the Appender.
fileName the name of the file to which the Appender has to log.
append whether the Appender has to truncate the file or just append to it if it already exists. Defaults to 'true'.
mode file mode to open the logfile with. Defaults to 00644.

Constructs a FileAppender to an already open file descriptor.

Parameters

name the name of the Appender.
fd the file descriptor to which the Appender has to log.

Destructor.

Log in Appender specific way. Subclasses of Appender should implement this method to perform actual logging.

Parameters

event The LoggingEvent to log.

Implements log4tango::Appender.

Reimplemented in log4tango::RollingFileAppender.

Closes the logfile.

Implements log4tango::Appender.

Gets the value of the 'append' option.

Gets the file open mode.

Check if the appender is valid.

Returns

true if the appender is valid, false otherwise.

Reimplemented from log4tango::Appender.

Reopens the logfile. This can be useful for logfiles that are rotated externally, e.g. by logrotate. This method is a NOOP for FileAppenders that have been constructed with a file descriptor.

Returns

true if the reopen succeeded.

Reimplemented from log4tango::Appender.

Sets the append vs truncate flag. NB. currently the FileAppender opens the logfile in the constructor. Therefore this method is too late to influence the first file opening. We'll need something similar to log4j's activateOptions().

Parameters

append false to truncate, true to append

Sets the file open mode.

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Sat Jan 9 2021 Version 5.0.2