git-annex/Logs/MaxSize.hs
Joey Hess 1265d7e5df
implement maxsize log and command
* maxsize: New command to tell git-annex how large the expected maximum
  size of a repository is.
* vicfg: Include maxsize configuration.
2024-08-11 15:41:26 -04:00

49 lines
1.3 KiB
Haskell

{- git-annex maxsize log
-
- Copyright 2024 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Logs.MaxSize (
MaxSize(..),
getMaxSizes,
recordMaxSize,
) where
import qualified Annex
import Annex.Common
import Types.MaxSize
import Logs
import Logs.UUIDBased
import Logs.MapLog
import qualified Annex.Branch
import qualified Data.Map as M
import Data.ByteString.Builder
import qualified Data.Attoparsec.ByteString as A
getMaxSizes :: Annex (M.Map UUID MaxSize)
getMaxSizes = maybe loadMaxSizes return =<< Annex.getState Annex.maxsizes
loadMaxSizes :: Annex (M.Map UUID MaxSize)
loadMaxSizes = do
maxsizes <- M.map value . fromMapLog . parseLogNew parseMaxSize
<$> Annex.Branch.get maxSizeLog
Annex.changeState $ \s -> s { Annex.maxsizes = Just maxsizes }
return maxsizes
recordMaxSize :: UUID -> MaxSize -> Annex ()
recordMaxSize uuid maxsize = do
c <- currentVectorClock
Annex.Branch.change (Annex.Branch.RegardingUUID [uuid]) maxSizeLog $
(buildLogNew buildMaxSize)
. changeLog c uuid maxsize
. parseLogNew parseMaxSize
buildMaxSize :: MaxSize -> Builder
buildMaxSize (MaxSize n) = byteString (encodeBS (show n))
parseMaxSize :: A.Parser MaxSize
parseMaxSize = maybe (fail "maxsize parse failed") (pure . MaxSize)
. readish . decodeBS =<< A.takeByteString