Log to a time-stamped rotating file
Log to a time-stamped rotating file
lgr::Filterable -> lgr::Appender -> lgr::AppenderFile -> lgr::AppenderFileRotating -> AppenderFileRotating
cache_backupsTRUE or FALSE. If TRUE (the default) the list of backups is cached,
if FALSE it is read from disk every time this appender triggers.
Caching brings a significant speedup for checking whether to rotate or
not based on the age of the last backup, but is only safe if
there are no other programs/functions (except this appender) interacting
with the backups.
Inherited methods
lgr::Filterable$add_filter()lgr::Filterable$filter()lgr::Filterable$remove_filter()lgr::Filterable$set_filters()lgr::Appender$set_layout()lgr::Appender$set_threshold()lgr::AppenderFile$show()lgr::AppenderFileRotating$append()lgr::AppenderFileRotating$prune()lgr::AppenderFileRotating$set_backup_dir()lgr::AppenderFileRotating$set_compression()lgr::AppenderFileRotating$set_create_file()lgr::AppenderFileRotating$set_file()lgr::AppenderFileRotating$set_max_backups()lgr::AppenderFileRotating$set_size()
new()AppenderFileRotatingTime$new(
file,
threshold = NA_integer_,
layout = LayoutFormat$new(),
filters = NULL,
age = Inf,
size = -1,
max_backups = Inf,
compression = FALSE,
backup_dir = dirname(file),
fmt = "%Y-%m-%d--%H-%M-%S",
overwrite = FALSE,
cache_backups = TRUE,
create_file = NULL
)size, age, max_backups, compression, backup_dir, fmt, overwrite, cache_backupssee rotor::rotate_time() for the meaning of these arguments. Note that
fmt corresponds to format and backup_dir to dir.
rotate()AppenderFileRotatingTime$rotate(force = FALSE, now = Sys.time())
set_age()AppenderFileRotatingTime$set_age(x)
set_fmt()AppenderFileRotatingTime$set_fmt(x)
set_overwrite()AppenderFileRotatingTime$set_overwrite(x)
set_cache_backups()set the cache_backups flag.
AppenderFileRotatingTime$set_cache_backups(x)xa logical scalar
format()AppenderFileRotatingTime$format(color = FALSE, ...)
clone()The objects of this class are cloneable with this method.
AppenderFileRotatingTime$clone(deep = FALSE)deepWhether to make a deep clone.
AppenderFileRotatingDate, AppenderFileRotating, rotor::rotate()
Other Appenders:
Appender,
AppenderBuffer,
AppenderConsole,
AppenderFile,
AppenderFileRotating,
AppenderFileRotatingDate,
AppenderTable