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|
{- Remote content identifier logs.
-
- Copyright 2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Logs.ContentIdentifier (
module X,
recordContentIdentifier,
getContentIdentifiers,
) where
import Annex.Common
import Logs
import Logs.MapLog
import Types.Import
import Types.RemoteState
import qualified Annex.Branch
import Logs.ContentIdentifier.Pure as X
import qualified Annex
import qualified Data.Map as M
import Data.List.NonEmpty (NonEmpty(..))
import qualified Data.List.NonEmpty as NonEmpty
-- | Records a remote's content identifier and the key that it corresponds to.
--
-- A remote may use multiple content identifiers for the same key over time,
-- so ones that were recorded before are preserved.
recordContentIdentifier :: RemoteStateHandle -> ContentIdentifier -> Key -> Annex ()
recordContentIdentifier (RemoteStateHandle u) cid k = do
c <- currentVectorClock
config <- Annex.getGitConfig
Annex.Branch.maybeChange (remoteContentIdentifierLogFile config k) $
addcid c . parseLog
where
addcid c v
| cid `elem` l = Nothing -- no change needed
| otherwise = Just $ buildLog $
changeMapLog c u (cid :| l) v
where
m = simpleMap v
l = contentIdentifierList (M.lookup u m)
-- | Get all known content identifiers for a key.
getContentIdentifiers :: Key -> Annex [(RemoteStateHandle, [ContentIdentifier])]
getContentIdentifiers k = do
config <- Annex.getGitConfig
map (\(u, l) -> (RemoteStateHandle u, NonEmpty.toList l) )
. M.toList . simpleMap . parseLog
<$> Annex.Branch.get (remoteContentIdentifierLogFile config k)
|
