log-warper-1.8.7: examples/Playground.hs

{-# LANGUAGE CPP                 #-}
{-# LANGUAGE ExplicitForAll      #-}
{-# LANGUAGE FlexibleContexts    #-}
{-# LANGUAGE ScopedTypeVariables #-}

-- | Testing module to play with logging.

module Main where

import Universum

#if ( __GLASGOW_HASKELL__ >= 802 )
import Control.Monad.Trans.Control (MonadBaseControl)
#endif
import Data.Yaml.Pretty (defConfig, encodePretty)
import Lens.Micro ((?~))
#if ( __GLASGOW_HASKELL__ >= 802 )
import Time (sec, threadDelay)
#endif

import System.Wlog (CanLog, atLogger, defaultConfig, infoPlus, launchFromFile, launchWithConfig,
                    logDebug, logError, logInfo, logNotice, logWarning, ltSeverity,
                    modifyLoggerName, parseLoggerConfig, productionB, usingLoggerName)
#if ( __GLASGOW_HASKELL__ >= 802 )
import System.Wlog (WithLoggerIO, launchSimpleLogging, logWarningWaitInf)
#endif

testLoggerConfigPath :: FilePath
testLoggerConfigPath = "logger-config-example.yaml"

testToJsonConfigOutput :: MonadIO m => m ()
testToJsonConfigOutput = do
    cfg             <- parseLoggerConfig testLoggerConfigPath
    let builtConfig  = cfg <> productionB
    putStrLn $ encodePretty defConfig builtConfig

testLogging :: (CanLog m) => m ()
testLogging = usingLoggerName "node" $ do
    logDebug   "skovoroda"
    logInfo    "patak"
    logNotice  "boroda"
    logWarning "haha"

    modifyLoggerName (<> "server") $ do
        logDebug  "provoda"
        logNotice "Ggurda"

    logError   "BARDAQ"

showSomeLog :: (CanLog m, MonadIO m) => m ()
showSomeLog = do
    putTextLn "Other log:"
    usingLoggerName "naked" $ do
        logWarning "Some warning"
        logDebug   "Some debug"

main :: IO ()
main = do
    testToJsonConfigOutput
    let runPlayLog = testLogging >> showSomeLog

    putTextLn "Default configurations with modification.."
    launchWithConfig (defaultConfig "node" & atLogger "node" . ltSeverity ?~ infoPlus)
                     "node"
                     runPlayLog

    putTextLn "\nFrom file configurations.."
    launchFromFile testLoggerConfigPath "node" runPlayLog

#if ( __GLASGOW_HASKELL__ >= 802 )
    launchSimpleLogging "concurrent" concurrentActions

concurrentActions :: forall m . (WithLoggerIO m, MonadBaseControl IO m) => m ()
concurrentActions = logWarningWaitInf 2 "stupid action" someStupidAction
  where
    someStupidAction :: m ()
    someStupidAction = replicateM_ 10 $ do
      threadDelay $ sec 1
      liftIO $ putTextLn "HEYYEYAAEYAAAEYAEYAA"
#endif