A logger consists of a log level threshold
, a log message formatter
function, a log record layout
formatting function and the appender
function deciding on the destination of the log record. For more details, see the package README.md
.
logger(threshold, formatter, layout, appender)
omit log messages below this log_levels
function pre-processing the message of the log record when it's not wrapped in a skip_formatter
call
function rendering the layout of the actual log record
function writing the log record
function taking level
and msg
arguments
By default, a general logger definition is created when loading the logger
package, that uses
INFO
as the log level threshold
layout_simple
as the layout function showing the log level, timestamp and log message
formatter_glue
(or formatter_sprintf
if glue is not installed) as the default formatter function transforming the R objects to be logged to a character vector
appender_console
as the default log record destination
It's quite unlikely that you need to call this function directly, but instead set the logger parameters and functions at log_threshold
, log_formatter
, log_layout
and log_appender
and then call log_levels
and its derivatives, such as log_info
directly.
For more details, see the Anatomy of a Log Request vignette at https://daroczig.github.io/logger/articles/anatomy.html.