54 lines
1.6 KiB
Haskell
54 lines
1.6 KiB
Haskell
{- Remote content identifier logs.
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-
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- Copyright 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.ContentIdentifier (
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module X,
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recordContentIdentifier,
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getContentIdentifiers,
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) where
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import Annex.Common
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import Logs
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import Logs.MapLog
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import Types.Import
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import Types.RemoteState
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import qualified Annex.Branch
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import Logs.ContentIdentifier.Pure as X
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import qualified Annex
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import qualified Data.Map as M
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import Data.List.NonEmpty (NonEmpty(..))
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import qualified Data.List.NonEmpty as NonEmpty
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-- | Records a remote's content identifier and the key that it corresponds to.
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--
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-- A remote may use multiple content identifiers for the same key over time,
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-- so ones that were recorded before are preserved.
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recordContentIdentifier :: RemoteStateHandle -> ContentIdentifier -> Key -> Annex ()
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recordContentIdentifier (RemoteStateHandle u) cid k = do
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c <- currentVectorClock
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config <- Annex.getGitConfig
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void $ Annex.Branch.maybeChange
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(Annex.Branch.RegardingUUID [u])
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(remoteContentIdentifierLogFile config k)
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(addcid c . parseLog)
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where
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addcid c v
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| cid `elem` l = Nothing -- no change needed
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| otherwise = Just $ buildLog $
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changeMapLog c u (cid :| l) v
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where
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m = simpleMap v
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l = contentIdentifierList (M.lookup u m)
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-- | Get all known content identifiers for a key.
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getContentIdentifiers :: Key -> Annex [(RemoteStateHandle, [ContentIdentifier])]
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getContentIdentifiers k = do
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config <- Annex.getGitConfig
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map (\(u, l) -> (RemoteStateHandle u, NonEmpty.toList l) )
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. M.toList . simpleMap . parseLog
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<$> Annex.Branch.get (remoteContentIdentifierLogFile config k)
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