Modulelog-base-0.12.1.0Haskell2010

Log.Class

The MonadLog type class of monads with logging capabilities.

Synopsis

data UTCTime
class MonadLog
value logAttention
value logInfo
value logTrace
value logAttention_
value logInfo_
value logTrace_

Packagelog-base-0.12.1.0
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-1.16.0.1 · Data.Time.Clock.Internal.UTCTime
Data UTCTimeDefined in time-1.16.0.1 · Data.Time.Clock.Internal.UTCTime
Ord UTCTimeDefined in time-1.16.0.1 · Data.Time.Clock.Internal.UTCTime
Read UTCTimeDefined in time-1.16.0.1 · Data.Time.Format.Parse · orphan
Show UTCTimeDefined in time-1.16.0.1 · Data.Time.LocalTime.Internal.ZonedTime · orphan
Generic UTCTimeDefined in time-1.16.0.1 · Data.Time.Clock.Internal.UTCTime
NFData UTCTimeDefined in time-1.16.0.1 · Data.Time.Clock.Internal.UTCTime
Hashable UTCTimeDefined in time-compat-1.9.9 · Data.Time.Orphans · orphan
FormatTime UTCTimeDefined in time-1.16.0.1 · Data.Time.Format.Format.Instances · orphan
ParseTime UTCTimeDefined in time-1.16.0.1 · Data.Time.Format.Parse.Instances · orphan
ISO8601 UTCTimeDefined in time-1.16.0.1 · Data.Time.Format.ISO8601
yyyy-mm-ddThh:mm:ss[.ss]Z [ISO 8601:2004(E) sec. 4.3.2 extended format]
FromJSON UTCTimeDefined in aeson-2.2.5.1 · Data.Aeson.Types.FromJSON
FromJSONKey UTCTimeDefined in aeson-2.2.5.1 · Data.Aeson.Types.FromJSON
ToJSON UTCTimeDefined in aeson-2.2.5.1 · Data.Aeson.Types.ToJSON
ToJSONKey UTCTimeDefined in aeson-2.2.5.1 · Data.Aeson.Types.ToJSON
Lift UTCTimeDefined in time-1.16.0.1 · Data.Time.Clock.Internal.UTCTime
type Rep UTCTime = D1 ('MetaData "UTCTime" "Data.Time.Clock.Internal.UTCTime" "time-1.16.0.1-dda8" '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-1.16.0.1 · Data.Time.Clock.Internal.UTCTime

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

Source#

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-0.12.1.0 · Log.Monad
(MonadLog m, Monad (t m), MonadTransControl t) => MonadLog (t m)Defined in log-base-0.12.1.0 · Log.Class
Generic, overlapping instance.

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

Source#

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 ()

Source#

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 ()

Source#

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

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

Source#

Like logAttention, but without any additional associated data.

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

Source#

Like logInfo, but without any additional associated data.

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

Source#

Like logTrace, but without any additional associated data.