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logging-effect-extra-handler: Handy logging handler combinators

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Handy logging handler combinators.

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Versions [RSS] 1.0.0, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 2.0.0, 2.0.1
Change log CHANGELOG.md
Dependencies base (>=4.8 && <4.11), exceptions (>=0.8.0.2 && <0.9), logging-effect (>=1.1.0 && <1.3), logging-effect-extra-handler, time (>=1.5 && <1.9), wl-pprint-text (>=1.1.0.4 && <1.2) [details]
License MIT
Author Jason Shipman
Maintainer Jason Shipman
Category Other
Home page https://github.com/jship/logging-effect-extra#readme
Bug tracker https://github.com/jship/logging-effect-extra/issues
Source repo head: git clone https://github.com/jship/logging-effect-extra
Uploaded by jship at 2017-11-06T03:27:51Z
Distributions
Reverse Dependencies 1 direct, 0 indirect [details]
Executables rfc822-handler, iso8601plus-handler, iso8601-handler, dispatch-handler-with-iso8601, dispatch-handler
Downloads 4226 total (34 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2017-11-06 [all 1 reports]

Readme for logging-effect-extra-handler-1.0.0

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logging-effect-extra-handler

Synopsis

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

module Main (main) where

import Control.Monad.Log (MonadLog, WithSeverity)
import qualified Control.Monad.Log as Log
import qualified Control.Monad.Log.Extra.Handler as Log
import Text.PrettyPrint.Leijen.Text (Doc)

app :: MonadLog (WithSeverity Doc) m => m ()
app = do
  Log.logEmergency "GAH! All systems are down!!!"
  Log.logAlert "Red alert!"
  Log.logCritical "Critical hit!"
  Log.logError "Errors abound!"
  Log.logWarning "Cargo number 2331 has commandeered the vessel"
  Log.logNotice "Heads up, but it's no biggie."
  Log.logInfo "Does anyone read these?"
  Log.logDebug "Sleuthing with log messages..."

main :: IO ()
main =
  Log.withStdoutHandler $ \stdoutHandler ->
  Log.withStderrHandler $ \stderrHandler ->
  Log.runLoggingT app (Log.dispatchHandler (Log.iso8601Handler stdoutHandler)
                                           (Log.iso8601Handler stderrHandler))

Usage via stack

# Build the project.
stack build

# Run the `dispatch-handler-with-iso8601` example
stack exec dispatch-handler-with-iso8601

# Run the `dispatch-handler` example
stack exec dispatch-handler

# Run the `iso8601-handler` example
stack exec iso8601-handler

# Run the `iso8601plus-handler` example
stack exec iso8601plus-handler

# Run the `rfc822-handler` example
stack exec rfc822-handler