System.Logging.Facade.Sink

Documentation

type LogSink = LogRecord -> IO ()

A consumer for log records

defaultLogSink :: IO LogSink

A thread-safe log sink that writes log messages to stderr

getLogSink :: IO LogSink

Return the global log sink.

setLogSink :: LogSink -> IO ()

Set the global log sink.

swapLogSink :: LogSink -> IO LogSink

Return the global log sink and set it to a new value in one atomic operation.

withLogSink :: LogSink -> IO () -> IO ()

Set the global log sink to a specified value, run given action, and finally restore the global log sink to its previous value.