R Observatory: Metrics for log4r version 0.5.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

log4r

0.5.0Package record

A Fast and Lightweight Logging System for R, Based on 'log4j'

0packages dependsuggested by 2

72Kdownloads / year

78.3%test coverage

13/13flavors OK

Overview

About

Maintained by Hadley WickhamCRAN page ↗GitHub ↗Website ↗Issues ↗Declared funder: Posit Software, PBC

Provides a fast, lightweight, object-oriented approach to logging based on the widely-emulated 'log4j' system and etymology. Loggers write messages to one or more destinations, such as the console, a file, or a remote server, using a format you control. Messages below the chosen severity threshold are discarded cheaply, so logging calls can be left in production code.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("log4r", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("r-lib/log4r")

Development version from r-lib/log4r. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-log4r

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-log4r

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-log4r

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.4 min · r-devel-windows-x86_64

Status changes

OK13 OKNow
OK7 OK2026-08-05
ERROR11 OK, 2 ERROR2026-06-16
OK12 OK2026-04-25
NOTE13 OK, 1 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.5.0

READMEYes · 315 wordsVignettesYes · 3 · evaluation depends on the environmentNEWSYes · 100% structured · mentions 0.5.0Citation fileNoWebsiteYes · pkgdown

Help pages: 10 (2 internal)includes a package overview page
Examples that run: 67%6 run in a plain check · 3 never run
Exported functions with examples: 100%
Documented parameters: 88%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (3)

How these are measured

Downloads

72K

CRAN downloads in the past year

Rank #1,928 · ~197/day · ~6K/mo

Releases R versions

Daily download trend is not available in this view yet.

3.6K30 days

10K90 days

72K1 year

Compare downloads with other packages →

Also on17.8K r2u3 autocran12.4K conda_forge113 c2d4u

How downloads are counted

Repository

r-lib/log4r ↗Organization: r-lib

101Stars

23Forks

10Open issues

2Open PRs

10Releases

215Commits

9Commit identities

loggingr

215 commits · Last activity 2026-09-04 · Default branch at 0.5.0.9000, ahead of CRAN 0.5.0 (checked 2026-10-18)

Responsiveness

How these are sampled

PRs merged (all time): 88%
Median days to close, 50 most recently updated closed issues: 7
Median days to close, 50 most recently updated closed PRs: 1

Commits over time

2026-08-09 · 2142026-09-15 · 215

How these are measured

PracticesBeta

10 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/r-lib/log4r on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-09-04 · The repository has a site deploy workflow

pkgdown site last built 2026-08-04

CRAN release process (1)

cran-comments.md

Lint, format, editor (3)

AirVS CodeRStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-08-04
Seen in the repository: .claude
Named in .Rbuildignore: .claude

Shared conventions any agent may read, so they name no particular tool.

Seen in the repository: AGENTS.md

How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

16 external dependencies (excludes base and recommended)

Installing log4r adds 3 packages (2 with compiled code, 1.5 MB of source tarballs). Heaviest: rlang 766 KB, cli 629 KB, lifecycle 105 KB.

Depends (0)

none

Imports (3)

cli lifecycle rlang

LinkingTo (0)

none

Suggests (13)

futile.logger httr jsonlite knitr lgr logger logging microbenchmark rlog rmarkdown rsyslog testthat webfakes

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 2

Suggests, most downloaded first

ProjectTemplate AutoMLR

How these are counted

Code & Tests

People & History

People (6)

Hadley Wickham

Maintainer since 0.5.0 (2026) · added in 0.5.0

Aaron Jacobs

Author · added in 0.3.0

John Myles White

Author, Copyright holder

Kirill Müller

Contributor · added in 0.2

Kenton White

Contributor · added in 0.2

Posit Software, PBC

Copyright holder, Funder · added in 0.5.0

Previously maintained by Aaron Jacobs (0.3.0 to 0.4.4) and Kirill Müller (0.2).

Releases (14)

Pick two releases to compare their code metrics.

unarchivedReturned to CRAN
2026-08-05
0.5.0Latest
record
2026-08-04 · current release · diff ↗ ·
added 6 exports
log_at, log_debug, log_error, log_fatal, log_info, log_warn
archivedRemoved from CRAN
2026-07-14
issues were not corrected in time despite reminder
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.4.4
record
2024-10-12 · diff ↗
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
0.4.3
record
2022-11-28 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.4.2
record
2021-11-04 · diff ↗
0.4.1
record
2021-10-28 · diff ↗
0.4.0
record
2021-10-26 · diff ↗ ·
added 6 exports
bare_log_layout, http_appender, json_log_layout, logfmt_log_layout, syslog_appender, tcp_appender
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
0.3.2
record
2020-01-18 · diff ↗

Show 19 earlier eventsHide 19 earlier events

0.3.1
record
2019-09-04 · diff ↗
0.3.0
record
2019-06-21 · diff ↗ ·
added 5 exports
console_appender, default_log_layout, file_appender, logger, simple_log_layout
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
0.2
record
2014-09-29 · diff ↗ ·
removed 6 exports
logfile.logger, logfile<-.logger, level.logger, level<-.logger, logformat.logger, logformat<-.logger

added 5 exports
as.loglevel, available.loglevels, is.loglevel, levellog, loglevel
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03
R
R 2.15.0 released · 2012-03-30
0.1-4
record
2012-03-01 · diff ↗
R
R 2.14.0 released · 2011-10-31
0.1-3
record
2011-06-25 · diff ↗ ·
added 1 export
verbosity
0.1-2
record
2011-05-17 · diff ↗
R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
0.1-1
record
2010-09-25
R
R 2.11.0 released · 2010-04-22

Package metadata

First published: 2010-09-25
Total releases: 14 / 16 yrs
License: Artistic-2.0 OSI
Download size: 47 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("log4r")

Format

Wickham, H., Posit Software, PBC, Jacobs, A., Müller, K., White, J. M., & White, K. (2026). log4r: A Fast and Lightweight Logging System for R, Based on 'log4j' (Version 0.5.0) [Computer software]. https://doi.org/10.32614/CRAN.package.log4r

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for log4r version 0.5.0 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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