Control.Monad.Logger

MonadLogger

class Monad m => MonadLogger m where

Methods

monadLoggerLog :: ToLogStr msg => Loc -> LogLevel -> msg -> m ()

monadLoggerLogSource :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> m ()

Instances

MonadLogger IO

MonadLogger Identity

Monad (ST s) => MonadLogger (ST s)

Monad (ST s) => MonadLogger (ST s)

(Monad (ResourceT m), MonadLogger m) => MonadLogger (ResourceT m)

(Monad (ListT m), MonadLogger m) => MonadLogger (ListT m)

(Monad (MaybeT m), MonadLogger m) => MonadLogger (MaybeT m)

(Monad (IdentityT m), MonadLogger m) => MonadLogger (IdentityT m)

(Monad (ContT r m), MonadLogger m) => MonadLogger (ContT r m)

(Monad (ErrorT e m), MonadLogger m, Error e) => MonadLogger (ErrorT e m)

(Monad (ReaderT r m), MonadLogger m) => MonadLogger (ReaderT r m)

(Monad (StateT s m), MonadLogger m) => MonadLogger (StateT s m)

(Monad (StateT s m), MonadLogger m) => MonadLogger (StateT s m)

(Monad (WriterT w m), MonadLogger m, Monoid w) => MonadLogger (WriterT w m)

(Monad (WriterT w m), MonadLogger m, Monoid w) => MonadLogger (WriterT w m)

(Monad (RWST r w s m), MonadLogger m, Monoid w) => MonadLogger (RWST r w s m)

(Monad (RWST r w s m), MonadLogger m, Monoid w) => MonadLogger (RWST r w s m)

(Monad (Pipe l i o u m), MonadLogger m) => MonadLogger (Pipe l i o u m)

data LogLevel

Constructors

LevelDebug

LevelInfo

LevelWarn

LevelError

LevelOther Text

Instances

Eq LogLevel

Ord LogLevel

Read LogLevel

Show LogLevel

Lift LogLevel

type LogSource = Text

TH logging

logDebug :: Q Exp

Generates a function that takes a Text and logs a LevelDebug message. Usage:

 $(logDebug) "This is a debug log message"

logInfo :: Q Exp

See logDebug

logWarn :: Q Exp

See logDebug

logError :: Q Exp

See logDebug

logOther :: Text -> Q Exp

Generates a function that takes a Text and logs a LevelOther message. Usage:

 $(logOther "My new level") "This is a log message"

TH logging with source

logDebugS :: Q Exp

Generates a function that takes a LogSource and Text and logs a LevelDebug message. Usage:

 $logDebug "SomeSource" "This is a debug log message"

logInfoS :: Q Exp

See logDebugS

logWarnS :: Q Exp

See logDebugS

logErrorS :: Q Exp

See logDebugS

logOtherS :: Q Exp

Generates a function that takes a LogSource, a level name and a Text and logs a LevelOther message. Usage:

 $logOther "SomeSource" "My new level" "This is a log message"