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|
{- Remote state logs.
-
- Copyright 2014, 2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.RemoteState (
getRemoteState,
setRemoteState,
) where
import Annex.Common
import Logs
import Logs.UUIDBased
import qualified Annex.Branch
import qualified Annex
import qualified Data.Map as M
import qualified Data.ByteString.Lazy as L
import qualified Data.Attoparsec.ByteString.Lazy as A
import Data.ByteString.Builder
type RemoteState = String
setRemoteState :: UUID -> Key -> RemoteState -> Annex ()
setRemoteState u k s = do
c <- liftIO currentVectorClock
config <- Annex.getGitConfig
Annex.Branch.change (remoteStateLogFile config k) $
buildRemoteState . changeLog c u s . parseRemoteState
buildRemoteState :: Log RemoteState -> Builder
buildRemoteState = buildLogNew (byteString . encodeBS)
getRemoteState :: UUID -> Key -> Annex (Maybe RemoteState)
getRemoteState u k = do
config <- Annex.getGitConfig
extract . parseRemoteState
<$> Annex.Branch.get (remoteStateLogFile config k)
where
extract m = value <$> M.lookup u m
parseRemoteState :: L.ByteString -> Log RemoteState
parseRemoteState = parseLogNew (decodeBS <$> A.takeByteString)
|
