layout_glue_colors: Format a log message with 'glue' and ANSI escape codes to add...

In logger: A Lightweight, Modern and Flexible Logging Utility

Format a log message with glue and ANSI escape codes to add colors

Description

Colour log levels based on their severity. Log levels are coloured with colorize_by_log_level() and the messages are coloured with grayscale_by_log_level().

Usage

layout_glue_colors(
  level,
  msg,
  namespace = NA_character_,
  .logcall = sys.call(),
  .topcall = sys.call(-1),
  .topenv = parent.frame()
)

Arguments

level	log level, see log_levels() for more details
msg	string message
namespace	string referring to the logger environment / config to be used to override the target of the message record to be used instead of the default namespace, which is defined by the R package name from which the logger was called, and falls back to a common, global namespace.
.logcall	the logging call being evaluated (useful in formatters and layouts when you want to have access to the raw, unevaluated R expression)
.topcall	R expression from which the logging function was called (useful in formatters and layouts to extract the calling function's name or arguments)
.topenv	original frame of the .topcall calling function where the formatter function will be evaluated and that is used to look up the namespace as well via logger:::top_env_name

Value

character vector

Note

This functionality depends on the crayon package.

See Also

Other log_layouts: get_logger_meta_variables(), layout_blank(), layout_glue(), layout_glue_generator(), layout_json(), layout_json_parser(), layout_logging(), layout_simple()

Examples

log_layout(layout_glue_colors)
log_threshold(TRACE)
log_info("Starting the script...")
log_debug("This is the second line")
log_trace("That is being placed right after the first one.")
log_warn("Some errors might come!")
log_error("This is a problem")
log_debug("Getting an error is usually bad")
log_error("This is another problem")
log_fatal("The last problem.")

logger documentation built on Oct. 30, 2024, 9:24 a.m.