Happstack.State.Saver

Documentation

module Happstack.State.Saver.Types

data PrefixLock

data Saver

Constructors

NullSaver

A saver that discards all output

FileSaver String

A saver that operates on files. The parameter is the prefix for the files.

Queue Saver

Enable queueing.

Memory (MVar Store)

createReader :: Serialize a => Saver -> String -> Int -> IO (ReaderStream a)

Dispatches over the Saver type provided to return a ReaderStream for the inferred type.

createWriter :: Serialize a => Saver -> String -> Int -> IO (WriterStream a)

Dispatches over the Saver type provided to return a WriterStream for the inferred type.

obtainLock :: Saver -> IO (Maybe PrefixLock)

releaseLock :: Maybe PrefixLock -> IO ()