70 lines
1.9 KiB
Haskell
70 lines
1.9 KiB
Haskell
{- git-annex trust
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-
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- Copyright 2010 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Trust (
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TrustLevel(..),
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trustGet,
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trustSet,
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trustPartition
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) where
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import qualified Data.Map as M
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import Data.Time.Clock.POSIX
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import Common.Annex
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import Types.TrustLevel
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import qualified Annex.Branch
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import qualified Annex
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import UUID
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import UUIDLog
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{- Filename of trust.log. -}
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trustLog :: FilePath
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trustLog = "trust.log"
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{- Returns a list of UUIDs at the specified trust level. -}
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trustGet :: TrustLevel -> Annex [UUID]
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trustGet level = M.keys . M.filter (== level) <$> trustMap
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{- Read the trustLog into a map, overriding with any
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- values from forcetrust. The map is cached for speed. -}
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trustMap :: Annex TrustMap
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trustMap = do
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cached <- Annex.getState Annex.trustmap
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case cached of
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Just m -> return m
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Nothing -> do
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overrides <- M.fromList <$> Annex.getState Annex.forcetrust
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m <- (M.union overrides . simpleMap . parseLog parseTrust) <$>
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Annex.Branch.get trustLog
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Annex.changeState $ \s -> s { Annex.trustmap = Just m }
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return m
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parseTrust :: String -> Maybe TrustLevel
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parseTrust s
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| length w > 0 = readMaybe $ head w
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-- back-compat; the trust.log used to only list trusted repos
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| otherwise = Just Trusted
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where
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w = words s
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{- Changes the trust level for a uuid in the trustLog. -}
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trustSet :: UUID -> TrustLevel -> Annex ()
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trustSet uuid level = do
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when (null uuid) $
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error "unknown UUID; cannot modify trust level"
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ts <- liftIO $ getPOSIXTime
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Annex.Branch.change trustLog $
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showLog show . changeLog ts uuid level . parseLog parseTrust
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Annex.changeState $ \s -> s { Annex.trustmap = Nothing }
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{- Partitions a list of UUIDs to those matching a TrustLevel and not. -}
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trustPartition :: TrustLevel -> [UUID] -> Annex ([UUID], [UUID])
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trustPartition level ls = do
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candidates <- trustGet level
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return $ partition (`elem` candidates) ls
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