Modulelog-base-0.12.0.1Haskell2010

Log.Class

The MonadLog type class of monads with logging capabilities.

1 type
1 class
6 values

Packagelog-base-0.12.0.1
Exports8
LanguageHaskell2010
LicenceBSD-3-Clause
SourceClass.hs

datadata UTCTime

This is the simplest representation of UTC. It consists of the day number, and a time offset from midnight. Note that if a day has a leap second added to it, it will have 86401 seconds.

Instances17Eq, Data, Ord, Read, Show, Generic, …

Eq UTCTimeDefined in time-1.12.2 · Data.Time.Clock.Internal.UTCTime
Data UTCTimeDefined in time-1.12.2 · Data.Time.Clock.Internal.UTCTime
Ord UTCTimeDefined in time-1.12.2 · Data.Time.Clock.Internal.UTCTime
Read UTCTimeDefined in time-1.12.2 · Data.Time.Format.Parse · orphan
Show UTCTimeDefined in time-1.12.2 · Data.Time.LocalTime.Internal.ZonedTime · orphan
Generic UTCTimeDefined in time-compat-1.9.8 · Data.Time.Orphans · orphan
NFData UTCTimeDefined in time-1.12.2 · Data.Time.Clock.Internal.UTCTime
Hashable UTCTimeDefined in time-compat-1.9.8 · Data.Time.Orphans · orphan
FormatTime UTCTimeDefined in time-1.12.2 · Data.Time.Format.Format.Instances · orphan
ParseTime UTCTimeDefined in time-1.12.2 · Data.Time.Format.Parse.Instances · orphan
ISO8601 UTCTimeDefined in time-1.12.2 · Data.Time.Format.ISO8601
yyyy-mm-ddThh:mm:ss[.sss]Z (ISO 8601:2004(E) sec. 4.3.2 extended format)
FromJSON UTCTimeDefined in aeson-2.2.3.0 · Data.Aeson.Types.FromJSON
FromJSONKey UTCTimeDefined in aeson-2.2.3.0 · Data.Aeson.Types.FromJSON
ToJSON UTCTimeDefined in aeson-2.2.3.0 · Data.Aeson.Types.ToJSON
ToJSONKey UTCTimeDefined in aeson-2.2.3.0 · Data.Aeson.Types.ToJSON
Lift UTCTimeDefined in time-compat-1.9.8 · Data.Time.Orphans · orphan
type Rep UTCTime = D1 ('MetaData "UTCTime" "Data.Time.Clock.Internal.UTCTime" "time-1.12.2-cfd2" 'False) (C1 ('MetaCons "UTCTime" 'PrefixI 'True) (S1 ('MetaSel ('Just "utctDay") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Day) :*: S1 ('MetaSel ('Just "utctDayTime") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DiffTime)))Defined in time-compat-1.9.8 · Data.Time.Orphans · orphan

classclass Monad m => MonadLog (m :: Type -> Type) where

Represents the family of monads with logging capabilities. Each MonadLog carries with it some associated state (the logging environment) that can be modified locally with localData and localDomain.

Methods

logMessage :: LogLevel -> Text -> Value -> m ()
Write a message to the log.
localData :: [Pair] -> m a -> m a
Extend the additional data associated with each log message locally.
localDomain :: Text -> m a -> m a
Extend the current application domain locally.
localMaxLogLevel :: LogLevel -> m a -> m a
Override the current maximum log level.
getLoggerEnv :: m LoggerEnv
Get current LoggerEnv object. Useful for construction of logging functions that work in a different monad, see getLoggerIO as an example.

Instances2MonadLog

MonadBase IO m => MonadLog (LogT m)Defined in log-base-0.12.0.1 · Log.Monad
(MonadLog m, Monad (t m), MonadTransControl t) => MonadLog (t m)Defined in log-base-0.12.0.1 · Log.Class
Generic, overlapping instance.

valuelogAttention :: (MonadLog m, ToJSON a) => Text -> a -> m ()

Log a message and its associated data using current time as the event time and the LogAttention log level.

valuelogInfo :: (MonadLog m, ToJSON a) => Text -> a -> m ()

Log a message and its associated data using current time as the event time and the LogInfo log level.

valuelogTrace :: (MonadLog m, ToJSON a) => Text -> a -> m ()

Log a message and its associated data using current time as the event time and the LogTrace log level.

valuelogAttention_ :: MonadLog m => Text -> m ()

Like logAttention, but without any additional associated data.

valuelogInfo_ :: MonadLog m => Text -> m ()

Like logInfo, but without any additional associated data.

valuelogTrace_ :: MonadLog m => Text -> m ()

Like logTrace, but without any additional associated data.