43 lines
1.1 KiB
Haskell
43 lines
1.1 KiB
Haskell
{- git-annex multicast fingerprint log
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-
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- Copyright 2017, 2019 Joey Hess <id@joeyh.name>
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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 Logs.Multicast (
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Fingerprint(..),
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recordFingerprint,
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knownFingerPrints,
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) where
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import Annex.Common
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import qualified Annex.Branch
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import Logs
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import Logs.UUIDBased
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import qualified Data.Map as M
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import qualified Data.Attoparsec.ByteString.Lazy as A
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import Data.ByteString.Builder
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newtype Fingerprint = Fingerprint String
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deriving (Eq, Read, Show)
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recordFingerprint :: Fingerprint -> UUID -> Annex ()
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recordFingerprint fp uuid = do
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c <- liftIO currentVectorClock
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Annex.Branch.change multicastLog $
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buildLogOld buildFindgerPrint
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. changeLog c uuid fp
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. parseLogOld fingerprintParser
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knownFingerPrints :: Annex (M.Map UUID Fingerprint)
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knownFingerPrints = simpleMap . parseLogOld fingerprintParser
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<$> Annex.Branch.get activityLog
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fingerprintParser :: A.Parser Fingerprint
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fingerprintParser = maybe (fail "fingerprint parse failed") pure
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. readish . decodeBS =<< A.takeByteString
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buildFindgerPrint :: Fingerprint -> Builder
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buildFindgerPrint = byteString . encodeBS . show
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