Log.Monad

Documentation

data Logger

Opaque data type representing logger.

Instances

Monoid Logger

Composition of Logger objects.

data LoggerEnv

LogT environment.

Constructors

LoggerEnv

Fields

leLogger :: !Logger

leComponent :: !Text

leData :: ![Pair]

type InnerLogT = ReaderT LoggerEnv

newtype LogT m a

Monad transformer that adds logging capabilities to the underlying monad.

Constructors

LogT

Fields

unLogT :: InnerLogT m a

Instances

MonadTrans LogT

MonadTransControl LogT

MonadBase b m => MonadBase b (LogT m)

MonadBaseControl b m => MonadBaseControl b (LogT m)

Monad m => Monad (LogT m)

Functor m => Functor (LogT m)

Applicative m => Applicative (LogT m)

MonadThrow m => MonadThrow (LogT m)

MonadCatch m => MonadCatch (LogT m)

MonadMask m => MonadMask (LogT m)

MonadIO m => MonadIO (LogT m)

(MonadBase IO m, MonadTime m) => MonadLog (LogT m)

type StT LogT m = StT InnerLogT m

type StM (LogT m) a = ComposeSt LogT m a

runLogT :: Text -> Logger -> LogT m a -> m a

mapLogT :: (m a -> n b) -> LogT m a -> LogT n b