The logging-effect-extra-file package

[ Tags: library, mit, other, program ] [ Propose Tags ]

TH splices to augment log messages with file info.

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Versions 1.0.0, 1.1.0, 1.1.1
Change log
Dependencies base (>=4.8 && <4.11), logging-effect (>=1.1.0 && <1.3), logging-effect-extra-file, template-haskell, wl-pprint-text (>= && <1.2) [details]
License MIT
Author Jason Shipman
Maintainer Jason Shipman
Category Other
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Source repository head: git clone
Uploaded Mon Nov 6 03:16:49 UTC 2017 by jship
Distributions LTSHaskell:1.1.1, NixOS:1.1.1, Stackage:1.1.1, Tumbleweed:1.1.1
Executables log-file-and-severity, log-file
Downloads 443 total (216 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2017-11-06 [all 1 reports]
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Readme for logging-effect-extra-file-1.1.1

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{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TemplateHaskell #-}

module Main (main) where

import Control.Monad.Log (MonadLog, WithSeverity)
import qualified Control.Monad.Log as Log
import Control.Monad.Log.Extra.File (WithFile)
import qualified Control.Monad.Log.Extra.File as Log
import qualified System.IO as IO
import Text.PrettyPrint.Leijen.Text (Doc)

app :: MonadLog (WithSeverity (WithFile Doc)) m => m ()
app = do
  $(Log.logEmergencyTH) "GAH! All systems are down!!!"
  $(Log.logAlertTH) "Red alert!"
  $(Log.logCriticalTH) "Critical hit!"
  $(Log.logErrorTH) "Errors abound!"
  $(Log.logWarningTH) "Cargo number 2331 has commandeered the vessel"
  $(Log.logNoticeTH) "Heads up, but it's no biggie."
  $(Log.logInfoTH) "Does anyone read these?"
  $(Log.logDebugTH) "Sleuthing with log messages..."

main :: IO ()
main = Log.withFDHandler Log.defaultBatchingOptions IO.stdout 0.4 80 $ \stdoutHandler ->
  Log.runLoggingT app (stdoutHandler . Log.renderWithSeverity (Log.renderWithFile id))

Usage via stack

# Build the project.
stack build

# Run the `log-file-and-severity` example
stack exec log-file-and-severity

# Run the `log-file` example
stack exec log-file