Modulefast-logger-3.2.6Haskell2010

System.Log.FastLogger.File

2 types
3 values

Packagefast-logger-3.2.6
Exports5
LanguageHaskell2010
LicenceBSD-3-Clause
SourceFile.hs

datadata FileLogSpec

The spec for logging files

Constructors

FileLogSpec
- log_file :: FilePath
- log_file_size :: Integer
  Max log file size (in bytes) before requiring rotation.
- log_backup_number :: Int
  Max number of rotated log files to keep around before overwriting the oldest one.

datadata TimedFileLogSpec

The spec for time based rotation. It supports post processing of log files. Does not delete any logs. Example:

timeRotate fname = LogFileTimedRotate
               (TimedFileLogSpec fname timeFormat sametime compressFile)
               defaultBufSize
   where
       timeFormat = "%FT%H%M%S"
       sametime = (==) on C8.takeWhile (/=T)
       compressFile fp = void . forkIO $
           callProcess "tar" [ "--remove-files", "-caf", fp <> ".gz", fp ]

Constructors

TimedFileLogSpec
- timed_log_file :: FilePath
  base file path
- timed_timefmt :: TimeFormat
  time format to prepend
- timed_same_timeframe :: FormattedTime -> FormattedTime -> Bool
  function that compares two formatted times as specified by timed_timefmt and decides if a new rotation is supposed to begin
- timed_post_process :: FilePath -> IO ()
  processing function called asynchronously after a file is added to the rotation

valuecheck :: FilePath -> IO ()

Checking if a log file can be written.

valuerotate :: FileLogSpec -> IO ()

Rotating log files.

valueprefixTime :: FormattedTime -> FilePath -> FilePath

Prefix file name with formatted time