Web.Sprinkles.Logger

Documentation

stderrLogger :: LogLevel -> Logger

A plain logger that logs directly to stdout. Since there is no buffer, having multiple threads write to this logger can cause unexpected behavior.

newBufferedLogger :: Logger -> IO Logger

A logger that wraps another logger and adds line buffering.

syslogLogger :: LogLevel -> Logger

A plain logger that logs to syslog.

nullLogger :: Logger

tChanLogger :: TChan LogMessage -> Logger

A logger that writes to a TChan. This implementation is for simulation-testing purposes; it is not possible to construct such a logger declaratively through configuration files, and it would be nonsensical anyway, because the main application does not provide any suitable TChans, nor any way of reading them out.

data Logger

Constructors

Logger

Fields

• writeLogMessage :: LogMessage -> IO ()

Instances

Default Logger

Defined in Web.Sprinkles.Logger

Methods

def :: Logger

data LogLevel

Constructors

Debug

Notice

Warning

Error

Critical

Instances

Bounded LogLevel

Defined in Web.Sprinkles.Logger

Methods

minBound :: LogLevel

maxBound :: LogLevel

Enum LogLevel

Defined in Web.Sprinkles.Logger

Methods

succ :: LogLevel -> LogLevel

pred :: LogLevel -> LogLevel

toEnum :: Int -> LogLevel

fromEnum :: LogLevel -> Int

enumFrom :: LogLevel -> [LogLevel]

enumFromThen :: LogLevel -> LogLevel -> [LogLevel]

enumFromTo :: LogLevel -> LogLevel -> [LogLevel]

enumFromThenTo :: LogLevel -> LogLevel -> LogLevel -> [LogLevel]

Eq LogLevel

Defined in Web.Sprinkles.Logger

Methods

(==) :: LogLevel -> LogLevel -> Bool

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

Ord LogLevel

Defined in Web.Sprinkles.Logger

Methods

compare :: LogLevel -> LogLevel -> Ordering

(<) :: LogLevel -> LogLevel -> Bool

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

(>) :: LogLevel -> LogLevel -> Bool

(>=) :: LogLevel -> LogLevel -> Bool

max :: LogLevel -> LogLevel -> LogLevel

min :: LogLevel -> LogLevel -> LogLevel

Show LogLevel

Defined in Web.Sprinkles.Logger

Methods

showsPrec :: Int -> LogLevel -> ShowS

show :: LogLevel -> String

showList :: [LogLevel] -> ShowS

Generic LogLevel

Defined in Web.Sprinkles.Logger

Associated Types

type Rep LogLevel :: * -> *

Methods

from :: LogLevel -> Rep LogLevel x

to :: Rep LogLevel x -> LogLevel

FromJSON LogLevel

Defined in Web.Sprinkles.Logger

Methods

parseJSON :: Value -> Parser LogLevel

parseJSONList :: Value -> Parser [LogLevel]

type Rep LogLevel

Defined in Web.Sprinkles.Logger

type Rep LogLevel = D1 (MetaData "LogLevel" "Web.Sprinkles.Logger" "sprinkles-0.6.0.0-EffGjOzp9OR7TO7a15Us7S" False) ((C1 (MetaCons "Debug" PrefixI False) (U1 :: * -> *) :+: C1 (MetaCons "Notice" PrefixI False) (U1 :: * -> *)) :+: (C1 (MetaCons "Warning" PrefixI False) (U1 :: * -> *) :+: (C1 (MetaCons "Error" PrefixI False) (U1 :: * -> *) :+: C1 (MetaCons "Critical" PrefixI False) (U1 :: * -> *))))

data LogMessage

Constructors

LogMessage

Fields

• lmTimestamp :: !UTCTime
• lmLevel :: !LogLevel
• lmMessage :: !Text

Instances

Eq LogMessage

Defined in Web.Sprinkles.Logger

Methods

(==) :: LogMessage -> LogMessage -> Bool

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

Show LogMessage

Defined in Web.Sprinkles.Logger

Methods

showsPrec :: Int -> LogMessage -> ShowS

show :: LogMessage -> String

showList :: [LogMessage] -> ShowS

FromJSON LogMessage

Defined in Web.Sprinkles.Logger

Methods

parseJSON :: Value -> Parser LogMessage

parseJSONList :: Value -> Parser [LogMessage]

writeLog :: Logger -> LogLevel -> Text -> IO ()