Network.MQTT.Logger

A simple logger abstraction.

Documentation

data Logger

Absract logger with three levels of importance.

Constructors

Logger

Fields

logInfo :: String -> IO ()

logWarning :: String -> IO ()

logError :: String -> IO ()

stdLogger :: Logger

logInfo prints to stdout, logWarning and logError to stderr (with [Warning]/[Error] prefix)

warnings :: Logger -> Logger

Log only warnings and errors, ignoring anything passed to logInfo.

errors :: Logger -> Logger

Like warnings, but logs only errors.

ignore :: String -> IO ()

Ignore the message.