git-annex/Annex/Queue.hs
Joey Hess 7f7c31df1c type based git config handling
Now there's a Config type, that's extracted from the git config at startup.
Note that laziness means that individual config values are only looked up
and parsed on demand, and so we get implicit memoization for all of them.
So this is not only prettier and more type safe, it optimises several
places that didn't have explicit memoization before. As well as getting rid
of the ugly explicit memoization code.

Not yet done for annex.<remote>.* configuration settings.
2012-12-29 23:10:18 -04:00

62 lines
1.4 KiB
Haskell

{- git-annex command queue
-
- Copyright 2011, 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Annex.Queue (
addCommand,
addUpdateIndex,
flush,
flushWhenFull,
size
) where
import Common.Annex
import Annex hiding (new)
import qualified Git.Queue
import qualified Git.UpdateIndex
{- Adds a git command to the queue. -}
addCommand :: String -> [CommandParam] -> [FilePath] -> Annex ()
addCommand command params files = do
q <- get
store <=< inRepo $ Git.Queue.addCommand command params files q
{- Adds an update-index stream to the queue. -}
addUpdateIndex :: Git.UpdateIndex.Streamer -> Annex ()
addUpdateIndex streamer = do
q <- get
store <=< inRepo $ Git.Queue.addUpdateIndex streamer q
{- Runs the queue if it is full. Should be called periodically. -}
flushWhenFull :: Annex ()
flushWhenFull = do
q <- get
when (Git.Queue.full q) flush
{- Runs (and empties) the queue. -}
flush :: Annex ()
flush = do
q <- get
unless (0 == Git.Queue.size q) $ do
showStoringStateAction
q' <- inRepo $ Git.Queue.flush q
store q'
{- Gets the size of the queue. -}
size :: Annex Int
size = Git.Queue.size <$> get
get :: Annex Git.Queue.Queue
get = maybe new return =<< getState repoqueue
new :: Annex Git.Queue.Queue
new = do
q <- Git.Queue.new . annexQueueSize <$> getConfig
store q
return q
store :: Git.Queue.Queue -> Annex ()
store q = changeState $ \s -> s { repoqueue = Just q }