System.Logger

This module re-exports the logger interface from System.Logger.Types and the implementation of that interface from System.Logger.Logger and System.Logger.Backend.Handle.

Documentation

withConsoleLogger :: (MonadIO m, MonadBaseControl IO m) => LogLevel -> LoggerT Text m α -> m α

A simple console logger

import System.Logger

main ∷ IO ()
main = withConsoleLogger Info $ do
    logg Info "moin"
    withLabel ("function", "f") f
    logg Warn "tschüss"
  where
    f = withLevel Debug $ do
        logg Debug "debug f"

withFileLogger :: (MonadIO m, MonadBaseControl IO m) => FilePath -> LogLevel -> LoggerT Text m α -> m α

A simple file logger

Logger Interface

module System.Logger.Types

Yet Another Logger

module System.Logger.Logger

Handle Backend

module System.Logger.Backend.Handle

Logging System Configuration

data LogConfig

Constructors

LogConfig

Fields

• _logConfigLogger :: !LoggerConfig
• _logConfigBackend :: !HandleBackendConfig

Instances

ToJSON LogConfig

Defined in System.Logger

Methods

toJSON :: LogConfig -> Value

toEncoding :: LogConfig -> Encoding

toJSONList :: [LogConfig] -> Value

toEncodingList :: [LogConfig] -> Encoding

Generic LogConfig

Defined in System.Logger

Associated Types

type Rep LogConfig :: Type -> Type

Methods

from :: LogConfig -> Rep LogConfig x

to :: Rep LogConfig x -> LogConfig

Read LogConfig

Defined in System.Logger

Methods

readsPrec :: Int -> ReadS LogConfig

readList :: ReadS [LogConfig]

readPrec :: ReadPrec LogConfig

readListPrec :: ReadPrec [LogConfig]

Show LogConfig

Defined in System.Logger

Methods

showsPrec :: Int -> LogConfig -> ShowS

show :: LogConfig -> String

showList :: [LogConfig] -> ShowS

Eq LogConfig

Defined in System.Logger

Methods

(==) :: LogConfig -> LogConfig -> Bool

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

Ord LogConfig

Defined in System.Logger

Methods

compare :: LogConfig -> LogConfig -> Ordering

(<) :: LogConfig -> LogConfig -> Bool

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

(>) :: LogConfig -> LogConfig -> Bool

(>=) :: LogConfig -> LogConfig -> Bool

max :: LogConfig -> LogConfig -> LogConfig

min :: LogConfig -> LogConfig -> LogConfig

FromJSON (LogConfig -> LogConfig)

Defined in System.Logger

Methods

parseJSON :: Value -> Parser (LogConfig -> LogConfig)

parseJSONList :: Value -> Parser [LogConfig -> LogConfig]

type Rep LogConfig

Defined in System.Logger

type Rep LogConfig = D1 ('MetaData "LogConfig" "System.Logger" "yet-another-logger-0.4.2-Lxa9UVJh9k66tXQMmTt57I" 'False) (C1 ('MetaCons "LogConfig" 'PrefixI 'True) (S1 ('MetaSel ('Just "_logConfigLogger") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 LoggerConfig) :*: S1 ('MetaSel ('Just "_logConfigBackend") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HandleBackendConfig)))

logConfigLogger :: Lens' LogConfig LoggerConfig

logConfigBackend :: Lens' LogConfig HandleBackendConfig

defaultLogConfig :: LogConfig

validateLogConfig :: ConfigValidation LogConfig []

pLogConfig :: MParser LogConfig

pLogConfig_

Arguments

:: Text

prefix for this and all subordinate command line options.

-> MParser LogConfig

A version of pLogConfig that takes a prefix for the command line option.

Since: 0.2