System.Logger

Contents

• Logger Interface
• Yet Another Logger
• Handle Backend
• Logging System Configuration

Description

Synopsis

• withConsoleLogger :: (MonadIO m, MonadBaseControl IO m) => LogLevel -> LoggerT Text m α -> m α
• withFileLogger :: (MonadIO m, MonadBaseControl IO m) => FilePath -> LogLevel -> LoggerT Text m α -> m α
• module System.Logger.Types
• module System.Logger.Logger
• module System.Logger.Backend.Handle
• data LogConfig = LogConfig {
  • _logConfigLogger :: !LoggerConfig
  • _logConfigBackend :: !HandleBackendConfig
  }
• logConfigLogger :: Lens' LogConfig LoggerConfig
• logConfigBackend :: Lens' LogConfig HandleBackendConfig
• defaultLogConfig :: LogConfig
• validateLogConfig :: ConfigValidation LogConfig []
• pLogConfig :: MParser LogConfig
• pLogConfig_ :: Text -> MParser LogConfig

Documentation

import System.Logger

main ∷ IO ()
main = withConsoleLogger Info $ do
    logg Info "moin"
    withLabel ("function", "f") f
    logg Warn "tschüss"
  where
    f = withLevel Debug $ do
        logg Debug "debug f"

Logger Interface

Yet Another Logger

Handle Backend

Logging System Configuration