6280af2901
Especially from borg, where the content identifier logs all end up being the same identical file! But also, for other imports, the location tracking logs can, in some cases, be identical files. Bonus optimisation: Avoid looking up (and parsing when set) GIT_ANNEX_VECTOR_CLOCK env var every time a log is written to. Although the lookup does happen at startup even when no log will be written now.
46 lines
1.3 KiB
Haskell
46 lines
1.3 KiB
Haskell
{- Remote state logs.
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-
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- Copyright 2014, 2019 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Logs.RemoteState (
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getRemoteState,
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setRemoteState,
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) where
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import Annex.Common
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import Types.RemoteState
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import Logs
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import Logs.UUIDBased
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import qualified Annex.Branch
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import qualified Annex
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import qualified Data.Map as M
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import qualified Data.ByteString.Lazy as L
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import qualified Data.Attoparsec.ByteString.Lazy as A
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import Data.ByteString.Builder
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type RemoteState = String
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setRemoteState :: RemoteStateHandle -> Key -> RemoteState -> Annex ()
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setRemoteState (RemoteStateHandle u) k s = do
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c <- currentVectorClock
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config <- Annex.getGitConfig
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Annex.Branch.change (remoteStateLogFile config k) $
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buildRemoteState . changeLog c u s . parseRemoteState
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buildRemoteState :: Log RemoteState -> Builder
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buildRemoteState = buildLogNew (byteString . encodeBS)
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getRemoteState :: RemoteStateHandle -> Key -> Annex (Maybe RemoteState)
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getRemoteState (RemoteStateHandle u) k = do
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config <- Annex.getGitConfig
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extract . parseRemoteState
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<$> Annex.Branch.get (remoteStateLogFile config k)
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where
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extract m = value <$> M.lookup u m
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parseRemoteState :: L.ByteString -> Log RemoteState
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parseRemoteState = parseLogNew (decodeBS <$> A.takeByteString)
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