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|
{- git-annex assistant thread to handle fixing problems with repositories
-
- Copyright 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Assistant.Threads.ProblemFixer (
problemFixerThread
) where
import Assistant.Common
import Assistant.Types.RepoProblem
import Assistant.RepoProblem
import Assistant.Types.UrlRenderer
import Assistant.Alert
import Remote
import qualified Types.Remote as Remote
import qualified Git.Fsck
import Assistant.Repair
import qualified Git
import Annex.UUID
import Utility.ThreadScheduler
{- Waits for problems with a repo, and tries to fsck the repo and repair
- the problem. -}
problemFixerThread :: UrlRenderer -> NamedThread
problemFixerThread urlrenderer = namedThread "ProblemFixer" $
go =<< getRepoProblems
where
go problems = do
mapM_ (handleProblem urlrenderer) problems
liftIO $ threadDelaySeconds (Seconds 60)
-- Problems may have been re-reported while they were being
-- fixed, so ignore those. If a new unique problem happened
-- 60 seconds after the last was fixed, we're unlikely
-- to do much good anyway.
go =<< filter (\p -> not (any (sameRepoProblem p) problems))
<$> getRepoProblems
handleProblem :: UrlRenderer -> RepoProblem -> Assistant ()
handleProblem urlrenderer repoproblem = do
fixed <- ifM ((==) (problemUUID repoproblem) <$> liftAnnex getUUID)
( handleLocalRepoProblem urlrenderer
, maybe (return False) (handleRemoteProblem urlrenderer)
=<< liftAnnex (remoteFromUUID $ problemUUID repoproblem)
)
when fixed $
liftIO $ afterFix repoproblem
handleRemoteProblem :: UrlRenderer -> Remote -> Assistant Bool
handleRemoteProblem urlrenderer rmt
| Git.repoIsLocal r && not (Git.repoIsLocalUnknown r) =
ifM (liftIO $ checkAvailable True rmt)
( do
fixedlocks <- repairStaleGitLocks r
fsckresults <- showFscking urlrenderer (Just rmt) $ tryNonAsync $
Git.Fsck.findBroken True r
repaired <- repairWhenNecessary urlrenderer (Remote.uuid rmt) (Just rmt) fsckresults
return $ fixedlocks || repaired
, return False
)
| otherwise = return False
where
r = Remote.repo rmt
{- This is not yet used, and should probably do a fsck. -}
handleLocalRepoProblem :: UrlRenderer -> Assistant Bool
handleLocalRepoProblem _urlrenderer = do
repairStaleGitLocks =<< liftAnnex gitRepo
|
