Generate log layout function using common variables available via glue syntax

format is passed to glue::glue() with access to the below variables:

• msg: the actual log message

• further variables set by get_logger_meta_variables()

layout_glue_generator(
  format = "{level} [{format(time, \"%Y-%m-%d %H:%M:%S\")}] {msg}"
)

Arguments

format

glue::glue()-flavored layout of the message using the above variables

Value

function taking level and msg arguments - keeping the original call creating the generator in the generator attribute that is returned when calling log_layout() for the currently used layout

See also

See example calls from layout_glue() and layout_glue_colors().

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

Examples

example_layout <- layout_glue_generator(
  format = "{node}/{pid}/{ns}/{ans}/{topenv}/{fn} {time} {level}: {msg}"
)
example_layout(INFO, "try {runif(1)}")
#> ip-10-2-72-104/3959154/NA/global/R_GlobalEnv/eval 2025-09-17 13:55:09.535779 INFO: try {runif(1)}

log_layout(example_layout)
log_info("try {runif(1)}")
#> ip-10-2-72-104/3959154/global/global/R_GlobalEnv/eval 2025-09-17 13:55:09.538705 INFO: try 0.695823878981173