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{- git-annex activity log
-
- Copyright 2015-2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Logs.Activity (
Log,
Activity(..),
recordActivity,
lastActivities,
) where
import Annex.Common
import qualified Annex.Branch
import Logs
import Logs.UUIDBased
import qualified Data.ByteString as S
import qualified Data.Attoparsec.ByteString as A
import Data.ByteString.Builder
data Activity
= Fsck
deriving (Eq, Read, Show, Enum, Bounded)
recordActivity :: Activity -> UUID -> Annex ()
recordActivity act uuid = do
c <- currentVectorClock
Annex.Branch.change activityLog $
buildLogOld buildActivity
. changeLog c uuid (Right act)
. parseLogOld parseActivity
lastActivities :: Maybe Activity -> Annex (Log Activity)
lastActivities wantact = parseLogOld (onlywanted =<< parseActivity)
<$> Annex.Branch.get activityLog
where
onlywanted (Right a) | wanted a = pure a
onlywanted _ = fail "unwanted activity"
wanted a = maybe True (a ==) wantact
buildActivity :: Either S.ByteString Activity -> Builder
buildActivity (Right a) = byteString $ encodeBS $ show a
buildActivity (Left b) = byteString b
-- Allow for unknown activities to be added later by preserving them.
parseActivity :: A.Parser (Either S.ByteString Activity)
parseActivity = go <$> A.takeByteString
where
go b = maybe (Left b) Right $ readish $ decodeBS b
|
