git-annex/Logs/FsckResults.hs
Joey Hess 4e0be2792b remove Read instance for Ref
Removed instance, got it all to build using fromRef. (With a few things
that really need to show something using a ref for debugging stubbed out.)

Then added back Read instance, and made Logs.View use it for serialization.
This changes the view log format.
2014-02-19 01:19:57 -04:00

48 lines
1.2 KiB
Haskell

{- git-annex fsck results log files
-
- Copyright 2013 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.FsckResults (
writeFsckResults,
readFsckResults,
clearFsckResults,
) where
import Common.Annex
import Utility.Tmp
import Git.Fsck
import Git.Types
import qualified Data.Set as S
writeFsckResults :: UUID -> FsckResults -> Annex ()
writeFsckResults u fsckresults = do
logfile <- fromRepo $ gitAnnexFsckResultsLog u
liftIO $
case fsckresults of
FsckFailed -> store S.empty logfile
FsckFoundMissing s
| S.null s -> nukeFile logfile
| otherwise -> store s logfile
where
store s logfile = do
createDirectoryIfMissing True (parentDir logfile)
liftIO $ viaTmp writeFile logfile $ serialize s
serialize = unlines . map fromRef . S.toList
readFsckResults :: UUID -> Annex FsckResults
readFsckResults u = do
logfile <- fromRepo $ gitAnnexFsckResultsLog u
liftIO $ catchDefaultIO (FsckFoundMissing S.empty) $
deserialize <$> readFile logfile
where
deserialize l =
let s = S.fromList $ map Ref $ lines l
in if S.null s then FsckFailed else FsckFoundMissing s
clearFsckResults :: UUID -> Annex ()
clearFsckResults = liftIO . nukeFile <=< fromRepo . gitAnnexFsckResultsLog