Generate log layout function rendering JSON

Generate log layout function rendering JSON

Usage

layout_json(fields = default_fields())

Arguments

fields

character vector of field names to be included in the JSON

Value

character vector

Note

This functionality depends on the jsonlite package.

See also

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

Examples

log_layout(layout_json())
log_info(42)
#> {"time":"2025-10-30 21:00:49","level":"INFO","ns":"global","ans":"global","topenv":"R_GlobalEnv","fn":"eval","node":"runnervmwhb2z","arch":"x86_64","os_name":"Linux","os_release":"6.11.0-1018-azure","os_version":"#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025","pid":9787,"user":"runner","msg":"42"}
log_info("ok {1:3} + {1:3} = {2*(1:3)}")
#> {"time":"2025-10-30 21:00:49","level":"INFO","ns":"global","ans":"global","topenv":"R_GlobalEnv","fn":"eval","node":"runnervmwhb2z","arch":"x86_64","os_name":"Linux","os_release":"6.11.0-1018-azure","os_version":"#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025","pid":9787,"user":"runner","msg":"ok 1 + 1 = 2"}
#> {"time":"2025-10-30 21:00:49","level":"INFO","ns":"global","ans":"global","topenv":"R_GlobalEnv","fn":"eval","node":"runnervmwhb2z","arch":"x86_64","os_name":"Linux","os_release":"6.11.0-1018-azure","os_version":"#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025","pid":9787,"user":"runner","msg":"ok 2 + 2 = 4"}
#> {"time":"2025-10-30 21:00:49","level":"INFO","ns":"global","ans":"global","topenv":"R_GlobalEnv","fn":"eval","node":"runnervmwhb2z","arch":"x86_64","os_name":"Linux","os_release":"6.11.0-1018-azure","os_version":"#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025","pid":9787,"user":"runner","msg":"ok 3 + 3 = 6"}