https://github.com/nymphium/nloge

Logger with eio
https://github.com/nymphium/nloge

algebraic-effects logger ocaml

Last synced: 7 months ago
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Logger with eio

• Host: GitHub
• URL: https://github.com/nymphium/nloge
• Owner: Nymphium
• License: mit
• Created: 2023-04-29T14:15:48.000Z (over 2 years ago)
• Default Branch: develop
• Last Pushed: 2025-05-07T18:47:59.000Z (8 months ago)
• Last Synced: 2025-06-05T22:09:20.096Z (7 months ago)
• Topics: algebraic-effects, logger, ocaml
• Language: OCaml
• Homepage: https://nymphium.github.io/nloge/nloge
• Size: 387 KB
• Stars: 7
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG
  • License: LICENSE

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README

          
n log e

===

Nloge, no-blocking logger with [eio](https://github.com/ocaml-multicore/eio)

Logger emits JSON -{`Emit`} -> converts JSON to string -{`Write`}-> "log"s the string

# Usage

See [hello](/examples/hello.ml)

```ocaml

let () =

  Eio_main.run

  @@ fun env ->

  Eio.Switch.run

  @@ fun sw ->

  Nloge.run ~sw ~outputs:[ env#stdout ] ~level:`Debug

  @@ fun () ->

  Nloge.debug

    ~__LOC__

    ~metadata:[ "now_posix", `Float (Eio.Time.now env#clock) ]

    (fun m -> m "hello")

;;

```

By default nloge logs with JSON format:

```

$ dune exec --display=quiet examples/hello.exe

{"log_level":"DEBUG","message":"hello","label":"File \"examples/hello.ml\", line 9, characters 5-12","now_posix":1683056241.957986}

```

# custom writere

See [custom writer](/examples/custom_transformer.ml)

# LICENSE

MIT