@hackage / log-base

Structured logging solution (base package)

Latest0.12.1.0

About

Metadata

  • Last updated , by arybczak
  • License BSD-3-Clause
  • Categories Systems Programming

  • Maintained by: Andrzej Rybczak <andrzej@rybczak.net>, Jonathan Jouty <jonathan@scrive.com>, Mikhail Glushenkov <mikhail@scrive.com>, Oleg Grenrus <oleg.grenrus@iki.fi>

  • Lottery factor: 3

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Installation

Tested Compilers

  1. 9.12.2
  2. 9.10.2
  3. 9.8.4
  4. 9.6.7
  5. 9.4.8
  6. 9.2.8
  7. 9.0.2
  8. 8.10.7

Readme

log

Hackage version Build Status

A set of libraries that provide a way to record structured log messages with multiple backends.

Supported backends:

Example

A sample usage for logging to both standard output and Elasticsearch:

{-# LANGUAGE OverloadedStrings #-}
module Main where

import Log
import Log.Backend.ElasticSearch
import Log.Backend.StandardOutput

main :: IO ()
main = do
  let config = defaultElasticSearchConfig
        { esServer = "http://localhost:9200"
        , esIndex  = "logs"
        }
  withStdOutLogger $ \stdoutLogger -> do
    withElasticSearchLogger config $ \esLogger -> do
      runLogT "main" (stdoutLogger <> esLogger) defaultLogLevel $ do
        logInfo_ "Hi there"