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|
{- git-annex activity log
-
- Copyright 2015-2021 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Logs.Activity (
Log,
Activity(..),
allActivities,
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
-- Allow for unknown activities to be added later.
| UnknownActivity S.ByteString
deriving (Eq, Read, Show)
allActivities :: [Activity]
allActivities = [Fsck]
-- Record an activity. This takes the place of previously recorded activity
-- for the UUID.
recordActivity :: Activity -> UUID -> Annex ()
recordActivity act uuid = do
c <- currentVectorClock
Annex.Branch.change (Annex.Branch.RegardingUUID [uuid]) activityLog $
buildLogOld buildActivity
. changeLog c uuid act
. parseLogOld parseActivity
-- Most recent activity for each UUID.
lastActivities :: Maybe Activity -> Annex (Log Activity)
lastActivities wantact = parseLogOld (onlywanted =<< parseActivity)
<$> Annex.Branch.get activityLog
where
onlywanted a
| wanted a = pure a
| otherwise = fail "unwanted activity"
wanted a = maybe True (a ==) wantact
buildActivity :: Activity -> Builder
buildActivity (UnknownActivity b) = byteString b
buildActivity a = byteString $ encodeBS $ show a
parseActivity :: A.Parser Activity
parseActivity = go <$> A.takeByteString
where
go b = fromMaybe (UnknownActivity b) (readish $ decodeBS b)
|
