Safe Haskell	Safe-Infered

System.Log.FastLogger

Contents

Logger
Logging
Strings
Misc functions
File rotation

Description

Fast logging system to copy log data directly to Handle buffer.

Synopsis

Logger

data Logger Source

Abstract data type for logger.

mkLogger Source

Arguments

:: Bool	Automatically flush on each loggerPut?
-> Handle	If `Handle` is associated with a file, `AppendMode` must be used.
-> IO Logger

Creates a Logger from the given handle.

renewLogger :: Logger -> Handle -> IO Logger Source

Creates a new Logger from old one by replacing Handle. The new Handle automatically inherits the file mode of the old one. The old Handle is automatically closed.

rmLogger :: Logger -> IO ()Source

Destroy a Logger by closing internal Handle.

Logging

loggerPutStr :: Logger -> [LogStr] -> IO ()Source

The hPut function to copy a list of LogStr to the buffer of Handle of Logger directly.

loggerPutBuilder :: Logger -> Builder -> IO ()Source

The hPut function directory to copy Builder to the buffer. The current implementation is inefficient at this moment. This would replace loggerPutStr someday.

loggerFlush :: Logger -> IO ()Source

Flushing the buffer of Handle of Logger.

Strings

data LogStr Source

A date type to contain String and ByteString. This data is exported so that format can be defined. This would be replaced with Builder someday when it can be written directly to Handle buffer.

Constructors

LS !String
LB !ByteString

class ToLogStr a whereSource

Methods

toLogStr :: a -> LogStr Source

Instances

ToLogStr Text
ToLogStr Text
ToLogStr ByteString
ToLogStr ByteString
ToLogStr [Char]

Misc functions

loggerDate :: Logger -> IO ZonedDate Source

Obtaining date string from Logger.

File rotation

module System.Log.FastLogger.File