Freckle.App.Logging

Logging settings

class HasLogging a where

Class for getting Logging settings from your app type

Methods

getLogLevel :: a -> LogLevel

getLogFormat :: a -> LogFormat

getLogLocation :: a -> LogLocation

getLogDefaultANSI :: HasLogging a => a -> Bool

Provide a pure decision for colorizing output

This is useful in a context where actively checking for ANSI terminal support is either not possible or too expensive. Given that we support LogFile, and so are unlikely to be redirecting terminal output to a file, it is relatively safe to use this determination.

getLogBehaviors :: HasLogging a => a -> IO (ByteString -> IO (), Bool)

data LogLevel

Instances

Eq LogLevel

Defined in Control.Monad.Logger

Methods

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

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

Ord LogLevel

Defined in Control.Monad.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

Read LogLevel

Defined in Control.Monad.Logger

Methods

readsPrec :: Int -> ReadS LogLevel

readList :: ReadS [LogLevel]

readPrec :: ReadPrec LogLevel

readListPrec :: ReadPrec [LogLevel]

Show LogLevel

Defined in Control.Monad.Logger

Methods

showsPrec :: Int -> LogLevel -> ShowS

show :: LogLevel -> String

showList :: [LogLevel] -> ShowS

Lift LogLevel

Defined in Control.Monad.Logger

Methods

lift :: LogLevel -> Q Exp

liftTyped :: LogLevel -> Q (TExp LogLevel)

data LogFormat

Constructors

FormatJSON

Emit {"level": "{level}", "message": "{message}"}

FormatTerminal

Emit [{level}] {message}@, possibly colorized

data LogLocation

Constructors

LogStdout

LogStderr

LogFile FilePath

Loading

parseEnvLogFormat :: Parser LogFormat

parseEnvLogLevel :: Parser LogLevel

parseEnvLogLocation :: Parser LogLocation

MonadLogger-style running

runAppLoggerT :: HasLogging a => a -> LoggingT IO b -> IO b

Formats, for use from other Logging libraries

formatJsonLogStr :: Loc -> LogSource -> LogLevel -> LogStr -> ByteString

formatJsonNoLoc :: ToJSON a => LogLevel -> a -> ByteString

formatJson :: ToJSON a => Maybe Loc -> Maybe LogSource -> LogLevel -> a -> ByteString

formatTerminal

Arguments

:: ToLogStr a

=> Bool

Supports escapes?

-> Loc

-> LogSource

-> LogLevel

-> a

-> ByteString