co-log-polysemy: Composable Contravariant Comonadic Logging Library

[ comonad, contravariant, effects, logging, mpl ] [ Propose Tags ]

Implementation of the co-log logging based on the polysemy extensible effects library.

The ideas behind this package are described in the following blog post:

For the taggless final implementation of the co-log ideas se the following package:


[Skip to Readme]
Versions [faq] 0.0.0.0
Change log CHANGELOG.md
Dependencies base (>=4.10.0.0 && <4.13), co-log-core (>=0.2.0.0 && <0.3), co-log-polysemy, polysemy (>=0.2.1.0 && <0.3) [details]
License MPL-2.0
Copyright 2019 Kowainik
Author Dmitrii Kovanikov
Maintainer Kowainik <xrom.xkov@gmail.com>
Revised Revision 1 made by shersh at Wed May 29 01:51:25 UTC 2019
Category Logging, Contravariant, Comonad, Effects
Home page https://github.com/kowainik/co-log
Bug tracker https://github.com/kowainik/co-log/issues
Source repo head: git clone https://github.com/kowainik/co-log.git
Uploaded by shersh at Sun May 5 13:41:00 UTC 2019
Distributions NixOS:0.0.0.0
Executables play-colog-poly
Downloads 42 total (14 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Hackage Matrix CI
Docs available [build log]
Last success reported on 2019-05-05 [all 1 reports]

Modules

[Index] [Quick Jump]

Downloads

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

For package maintainers and hackage trustees


Readme for co-log-polysemy-0.0.0.0

[back to package description]

co-log

MPL-2.0 license Build status

| | | | | | :------------ | :--------------------------------- | :---------------------------------------- | :---------------------------------------------------- | | co-log-core | Hackage | Stackage LTS | Stackage Nightly | | co-log | Hackage | Stackage LTS | Stackage Nightly | | co-log-polysemy | Hackage | Stackage LTS | Stackage Nightly |

co-log is a composable and configurable logging framework. The idea of the approach is described in the following blog post:

The repository contains the following packages:

  • co-log-core: lightweight package with basic data types and general idea.
  • co-log: taggless final implementation of logging library based on co-log-core.
  • co-log-polysemy: implementation of logging library based on co-log-core and the polysemy extensible effects library.
  • co-log-benchmark: Benchmarks of the co-log library.

See the following tutorial series about the library:

Benchmarks

co-log is compared with basic functions like putStrLn. Since IO overhead is big enough, every benchmark dumps 10K messages to output. If benchmark name doesn't contain Message then this benchmark simply dumps string "message" to output, otherwise it works with Message data type from the co-log library.

| Benchmarks | Time for 10K messages | | :------------------------------------------------------ | :-------------------- | | Prelude.putStrLn | 5.117ms | | Text.putStrLn | 9.220ms | | ByteString.putStrLn | 2.971ms | | mempty | 1.181ms | | logStringStdout | 5.107ms | | logPrint | 5.248ms | | logTextStdout | 5.351ms | | logByteStringStdout | 2.933ms | | logByteStringStderr | 17.482ms | | ByteString > (stdout <> stderr) | 17.715ms | | Message > format > stdout | 9.188ms | | Message > format > ByteString > stdout | 3.524ms | | Message{callstack} > format > stdout | 9.139ms | | Message{callstack:5} > format > stdout | 9.464ms | | Message{callstack:50} > format > stdout | 9.439ms | | Message{Time,ThreadId} > format > stdout | 54.160ms | | Message{Time,ThreadId} > format > ByteString > stdout | 54.137ms |