git-annex/Upgrade.hs
Joey Hess 12c88ee571
fix upgrade of more than 1 version at a time
It was only running the first upgrade and not subsequent ones, but
setting annex.version to the final version.
2018-10-26 14:31:13 -04:00

76 lines
2 KiB
Haskell

{- git-annex upgrade support
-
- Copyright 2010, 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Upgrade where
import Annex.Common
import Annex.Version
import Types.RepoVersion
#ifndef mingw32_HOST_OS
import qualified Upgrade.V0
import qualified Upgrade.V1
#endif
import qualified Upgrade.V2
import qualified Upgrade.V3
import qualified Upgrade.V4
import qualified Upgrade.V5
import qualified Upgrade.V6
import qualified Data.Map as M
checkUpgrade :: RepoVersion -> Annex ()
checkUpgrade = maybe noop giveup <=< needsUpgrade
needsUpgrade :: RepoVersion -> Annex (Maybe String)
needsUpgrade v
| v `elem` supportedVersions = ok
| otherwise = case M.lookup v autoUpgradeableVersions of
Nothing
| v `elem` upgradableVersions ->
err "Upgrade this repository: git-annex upgrade"
| otherwise ->
err "Upgrade git-annex."
Just newv -> ifM (upgrade True newv)
( ok
, err "Automatic upgrade failed!"
)
where
err msg = return $ Just $ "Repository version " ++
show (fromRepoVersion v) ++
" is not supported. " ++ msg
ok = return Nothing
upgrade :: Bool -> RepoVersion -> Annex Bool
upgrade automatic destversion = do
upgraded <- go =<< getVersion
when upgraded $
setVersion destversion
return upgraded
where
go (Just v)
| v >= destversion = return True
| otherwise = ifM (up v)
( go (Just (RepoVersion (fromRepoVersion v + 1)))
, return False
)
go _ = return True
#ifndef mingw32_HOST_OS
up (RepoVersion 0) = Upgrade.V0.upgrade
up (RepoVersion 1) = Upgrade.V1.upgrade
#else
up (RepoVersion 0) = giveup "upgrade from v0 on Windows not supported"
up (RepoVersion 1) = giveup "upgrade from v1 on Windows not supported"
#endif
up (RepoVersion 2) = Upgrade.V2.upgrade
up (RepoVersion 3) = Upgrade.V3.upgrade automatic
up (RepoVersion 4) = Upgrade.V4.upgrade automatic
up (RepoVersion 5) = Upgrade.V5.upgrade automatic
up (RepoVersion 6) = Upgrade.V6.upgrade automatic
up _ = return True