log-warper-1.7.3: examples/Playground.hs

-- | Testing module to play with logging.

module Main where

import Universum

import Data.Monoid ((<>))
import Data.Yaml.Pretty (defConfig, encodePretty)

import System.Wlog (CanLog, defaultConfig, launchFromFile, launchSimpleLogging, logDebug, logError,
                    logInfo, logNotice, logWarning, modifyLoggerName, parseLoggerConfig,
                    productionB, usingLoggerName)

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
    putText "Other log:"
    usingLoggerName "naked" $ do
        logWarning "Some warning"
        logDebug   "Some debug"

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

    putStrLn $ encodePretty defConfig $ defaultConfig "example"
    putText "Default configurations.."
    launchSimpleLogging "node" runPlayLog

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