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{- git-annex uuids
-
- Each git repository used by git-annex has an annex.uuid setting that
- uniquely identifies that repository.
-
- UUIDs of remotes are cached in git config, using keys named
- remote.<name>.annex-uuid
-
- uuid.log stores a list of known uuids, and their descriptions.
-
- Copyright 2010-2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.UUID (
describeUUID,
recordUUID,
uuidMap
) where
import qualified Data.Map as M
import Data.Time.Clock.POSIX
import Common.Annex
import qualified Annex.Branch
import Logs.UUIDBased
import qualified Annex.UUID
{- Filename of uuid.log. -}
logfile :: FilePath
logfile = "uuid.log"
{- Records a description for a uuid in the log. -}
describeUUID :: UUID -> String -> Annex ()
describeUUID uuid desc = do
ts <- liftIO $ getPOSIXTime
Annex.Branch.change logfile $
showLog id . changeLog ts uuid desc . parseLog Just
{- Records the uuid in the log, if it's not already there. -}
recordUUID :: UUID -> Annex ()
recordUUID u = go . M.lookup u =<< uuidMap
where
go (Just "") = set
go Nothing = set
go _ = return ()
set = describeUUID u ""
{- Read the uuidLog into a simple Map.
-
- The UUID of the current repository is included explicitly, since
- it may not have been described and so otherwise would not appear. -}
uuidMap :: Annex (M.Map UUID String)
uuidMap = do
m <- (simpleMap . parseLog Just) <$> Annex.Branch.get logfile
u <- Annex.UUID.getUUID
return $ M.insertWith' preferold u "" m
where
preferold = flip const
|
