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