logging-facade-0.3.0: Simple logging abstraction that allows multiple back-ends

Safe HaskellNone
LanguageHaskell2010

System.Logging.Facade

Contents

Description

This module is intended to be imported qualified:

import qualified System.Logging.Facade as Log
Synopsis

Producing log messages

log :: (HasCallStack, Logging m) => LogLevel -> String -> m () Source #

Produce a log message with specified log level.

trace :: (HasCallStack, Logging m) => String -> m () Source #

Produce a log message with log level TRACE.

debug :: (HasCallStack, Logging m) => String -> m () Source #

Produce a log message with log level DEBUG.

info :: (HasCallStack, Logging m) => String -> m () Source #

Produce a log message with log level INFO.

warn :: (HasCallStack, Logging m) => String -> m () Source #

Produce a log message with log level WARN.

error :: (HasCallStack, Logging m) => String -> m () Source #

Produce a log message with log level ERROR.

Types

class Monad m => Logging m Source #

A type class for monads with logging support

Minimal complete definition

consumeLogRecord

Instances
Logging IO Source #

Log messages that are produced in the IO monad are consumed by the global LogSink.

Instance details

Defined in System.Logging.Facade.Class

Logging m => Logging (MaybeT m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (ListT m) Source # 
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Defined in System.Logging.Facade.Class

(Monoid w, Logging m) => Logging (WriterT w m) Source # 
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Defined in System.Logging.Facade.Class

(Monoid w, Logging m) => Logging (WriterT w m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (StateT s m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (StateT s m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (ReaderT r m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (IdentityT m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (ExceptT e m) Source # 
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Defined in System.Logging.Facade.Class

(Error e, Logging m) => Logging (ErrorT e m) Source # 
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Defined in System.Logging.Facade.Class

Logging m => Logging (ContT r m) Source # 
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Defined in System.Logging.Facade.Class

(Monoid w, Logging m) => Logging (RWST r w s m) Source # 
Instance details

Defined in System.Logging.Facade.Class

Methods

consumeLogRecord :: LogRecord -> RWST r w s m () Source #

(Monoid w, Logging m) => Logging (RWST r w s m) Source # 
Instance details

Defined in System.Logging.Facade.Class

Methods

consumeLogRecord :: LogRecord -> RWST r w s m () Source #

data LogLevel Source #

Constructors

TRACE 
DEBUG 
INFO 
WARN 
ERROR 
Instances
Bounded LogLevel Source # 
Instance details

Defined in System.Logging.Facade.Types

Enum LogLevel Source # 
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Defined in System.Logging.Facade.Types

Eq LogLevel Source # 
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Defined in System.Logging.Facade.Types

Ord LogLevel Source # 
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Defined in System.Logging.Facade.Types

Read LogLevel Source # 
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Defined in System.Logging.Facade.Types

Show LogLevel Source # 
Instance details

Defined in System.Logging.Facade.Types