52 lines
1.4 KiB
Haskell
52 lines
1.4 KiB
Haskell
{- git-annex activity log
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-
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- Copyright 2015-2019 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.Activity (
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Log,
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Activity(..),
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recordActivity,
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lastActivities,
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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.ByteString as S
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import qualified Data.Attoparsec.ByteString as A
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import Data.ByteString.Builder
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data Activity
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= Fsck
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deriving (Eq, Read, Show, Enum, Bounded)
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recordActivity :: Activity -> UUID -> Annex ()
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recordActivity act uuid = do
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c <- liftIO currentVectorClock
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Annex.Branch.change activityLog $
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buildLogOld buildActivity
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. changeLog c uuid (Right act)
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. parseLogOld parseActivity
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lastActivities :: Maybe Activity -> Annex (Log Activity)
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lastActivities wantact = parseLogOld (onlywanted =<< parseActivity)
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<$> Annex.Branch.get activityLog
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where
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onlywanted (Right a) | wanted a = pure a
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onlywanted _ = fail "unwanted activity"
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wanted a = maybe True (a ==) wantact
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buildActivity :: Either S.ByteString Activity -> Builder
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buildActivity (Right a) = byteString $ encodeBS $ show a
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buildActivity (Left b) = byteString b
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-- Allow for unknown activities to be added later by preserving them.
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parseActivity :: A.Parser (Either S.ByteString Activity)
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parseActivity = go <$> A.takeByteString
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where
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go b = maybe (Left b) Right $ readish $ decodeBS b
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