hslogger-1.3.1.2: Versatile logging framework
CopyrightCopyright (C) 2004-2011 John Goerzen
LicenseBSD3
Portabilityportable
Safe HaskellSafe-Inferred
LanguageHaskell2010

System.Log

Contents

Description

Haskell Logging Framework

Written by John Goerzen, jgoerzen@complete.org

This module defines basic types used for logging.

Extensive documentation is available in System.Log.Logger.

Synopsis

Types

data Priority Source #

Priorities are used to define how important a log message is. Users can filter log messages based on priorities.

These have their roots on the traditional syslog system. The standard definitions are given below, but you are free to interpret them however you like. They are listed here in ascending importance order.

Constructors

DEBUG

Debug messages

INFO

Information

NOTICE

Normal runtime conditions

WARNING

General Warnings

ERROR

General Errors

CRITICAL

Severe situations

ALERT

Take immediate action

EMERGENCY

System is unusable

Instances

Instances details
NFData Priority Source #

Since: 1.3.1.0

Instance details

Defined in System.Log

Methods

rnf :: Priority -> ()

Data Priority Source # 
Instance details

Defined in System.Log

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Priority -> c Priority

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Priority

toConstr :: Priority -> Constr

dataTypeOf :: Priority -> DataType

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Priority)

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Priority)

gmapT :: (forall b. Data b => b -> b) -> Priority -> Priority

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Priority -> r

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Priority -> r

gmapQ :: (forall d. Data d => d -> u) -> Priority -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> Priority -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Priority -> m Priority

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Priority -> m Priority

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Priority -> m Priority

Bounded Priority Source # 
Instance details

Defined in System.Log

Methods

minBound :: Priority

maxBound :: Priority

Enum Priority Source # 
Instance details

Defined in System.Log

Methods

succ :: Priority -> Priority

pred :: Priority -> Priority

toEnum :: Int -> Priority

fromEnum :: Priority -> Int

enumFrom :: Priority -> [Priority]

enumFromThen :: Priority -> Priority -> [Priority]

enumFromTo :: Priority -> Priority -> [Priority]

enumFromThenTo :: Priority -> Priority -> Priority -> [Priority]

Generic Priority Source # 
Instance details

Defined in System.Log

Associated Types

type Rep Priority 
Instance details

Defined in System.Log

type Rep Priority = D1 ('MetaData "Priority" "System.Log" "hslogger-1.3.1.2-inplace" 'False) (((C1 ('MetaCons "DEBUG" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "INFO" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "NOTICE" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WARNING" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "ERROR" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CRITICAL" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ALERT" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "EMERGENCY" 'PrefixI 'False) (U1 :: Type -> Type))))

Methods

from :: Priority -> Rep Priority x

to :: Rep Priority x -> Priority

Read Priority Source # 
Instance details

Defined in System.Log

Methods

readsPrec :: Int -> ReadS Priority

readList :: ReadS [Priority]

readPrec :: ReadPrec Priority

readListPrec :: ReadPrec [Priority]

Show Priority Source # 
Instance details

Defined in System.Log

Methods

showsPrec :: Int -> Priority -> ShowS

show :: Priority -> String

showList :: [Priority] -> ShowS

Eq Priority Source # 
Instance details

Defined in System.Log

Methods

(==) :: Priority -> Priority -> Bool

(/=) :: Priority -> Priority -> Bool

Ord Priority Source # 
Instance details

Defined in System.Log

Methods

compare :: Priority -> Priority -> Ordering

(<) :: Priority -> Priority -> Bool

(<=) :: Priority -> Priority -> Bool

(>) :: Priority -> Priority -> Bool

(>=) :: Priority -> Priority -> Bool

max :: Priority -> Priority -> Priority

min :: Priority -> Priority -> Priority

type Rep Priority Source # 
Instance details

Defined in System.Log

type Rep Priority = D1 ('MetaData "Priority" "System.Log" "hslogger-1.3.1.2-inplace" 'False) (((C1 ('MetaCons "DEBUG" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "INFO" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "NOTICE" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WARNING" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "ERROR" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CRITICAL" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ALERT" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "EMERGENCY" 'PrefixI 'False) (U1 :: Type -> Type))))

type LogRecord = (Priority, String) Source #

Internal type of log records