856ce5cf5f
v10 will run 1 year after the upgrade to v9, to give time for any v8 processes to die. Until that point, the v10 upgrade will be tried by every process but deferred, so added support for deferring upgrades. The upgrade prevention lock file that will be used by v10 is not yet implemented, so it does not yet defer. Sponsored-by: Dartmouth College's Datalad project
148 lines
4.2 KiB
Haskell
148 lines
4.2 KiB
Haskell
{- git-annex v2 -> v3 upgrade support
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-
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- Copyright 2011 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Upgrade.V2 where
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import Annex.Common
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import Types.Upgrade
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import qualified Git
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import qualified Git.Command
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import qualified Git.Ref
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import qualified Annex.Branch
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import qualified Annex
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import Annex.Content
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import Utility.Tmp
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import Logs
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import Messages.Progress
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olddir :: Git.Repo -> FilePath
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olddir g
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| Git.repoIsLocalBare g = ""
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| otherwise = ".git-annex"
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{- .git-annex/ moved to a git-annex branch.
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-
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- Strategy:
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-
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- * Create the git-annex branch.
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- * Find each location log file in .git-annex/, and inject its content
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- into the git-annex branch, unioning with any content already in
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- there. (in passing, this deals with the semi transition that left
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- some location logs hashed two different ways; both are found and
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- merged).
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- * Also inject remote.log, trust.log, and uuid.log.
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- * git rm -rf .git-annex
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- * Remove stuff that used to be needed in .gitattributes.
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- * Commit changes.
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-}
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upgrade :: Annex UpgradeResult
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upgrade = do
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showAction "v2 to v3"
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bare <- fromRepo Git.repoIsLocalBare
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old <- fromRepo olddir
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Annex.Branch.create
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showProgressDots
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e <- liftIO $ doesDirectoryExist old
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when e $ do
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config <- Annex.getGitConfig
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mapM_ (\(k, f) -> inject f $ fromRawFilePath $ locationLogFile config k) =<< locationLogs
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mapM_ (\f -> inject f f) =<< logFiles old
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saveState False
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showProgressDots
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when e $ do
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inRepo $ Git.Command.run [Param "rm", Param "-r", Param "-f", Param "-q", File old]
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unless bare $ inRepo gitAttributesUnWrite
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showProgressDots
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unless bare push
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return UpgradeSuccess
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locationLogs :: Annex [(Key, FilePath)]
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locationLogs = do
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config <- Annex.getGitConfig
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dir <- fromRepo gitStateDir
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liftIO $ do
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levela <- dirContents dir
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levelb <- mapM tryDirContents levela
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files <- mapM tryDirContents (concat levelb)
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return $ mapMaybe (islogfile config) (concat files)
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where
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tryDirContents d = catchDefaultIO [] $ dirContents d
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islogfile config f = maybe Nothing (\k -> Just (k, f)) $
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locationLogFileKey config (toRawFilePath f)
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inject :: FilePath -> FilePath -> Annex ()
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inject source dest = do
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old <- fromRepo olddir
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new <- liftIO (readFile $ old </> source)
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Annex.Branch.change (Annex.Branch.RegardingUUID []) (toRawFilePath dest) $ \prev ->
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encodeBL $ unlines $ nub $ lines (decodeBL prev) ++ lines new
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logFiles :: FilePath -> Annex [FilePath]
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logFiles dir = return . filter (".log" `isSuffixOf`)
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<=< liftIO $ getDirectoryContents dir
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push :: Annex ()
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push = do
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origin_master <- inRepo $ Git.Ref.exists $
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Git.Ref $ encodeBS "origin/master"
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origin_gitannex <- Annex.Branch.hasOrigin
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case (origin_master, origin_gitannex) of
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(_, True) -> do
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-- Merge in the origin's git-annex branch,
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-- so that pushing the git-annex branch
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-- will immediately work. Not pushed here,
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-- because it's less obnoxious to let the user
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-- push.
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void Annex.Branch.update
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(True, False) -> do
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-- push git-annex to origin, so that
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-- "git push" will from then on
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-- automatically push it
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void Annex.Branch.update -- just in case
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showAction "pushing new git-annex branch to origin"
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showOutput
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inRepo $ Git.Command.run
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[ Param "push"
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, Param "origin"
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, Param $ Git.fromRef Annex.Branch.name
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]
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_ -> do
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-- no origin exists, so just let the user
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-- know about the new branch
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void Annex.Branch.update
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showLongNote $
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"git-annex branch created\n" ++
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"Be sure to push this branch when pushing to remotes.\n"
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{- Old .gitattributes contents, not needed anymore. -}
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attrLines :: [String]
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attrLines =
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[ stateDir </> "*.log merge=union"
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, stateDir </> "*/*/*.log merge=union"
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]
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gitAttributesUnWrite :: Git.Repo -> IO ()
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gitAttributesUnWrite repo = do
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let attributes = fromRawFilePath (Git.attributes repo)
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whenM (doesFileExist attributes) $ do
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c <- readFileStrict attributes
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liftIO $ viaTmp writeFile attributes $ unlines $
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filter (`notElem` attrLines) $ lines c
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Git.Command.run [Param "add", File attributes] repo
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stateDir :: FilePath
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stateDir = addTrailingPathSeparator ".git-annex"
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gitStateDir :: Git.Repo -> FilePath
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gitStateDir repo = addTrailingPathSeparator $
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fromRawFilePath (Git.repoPath repo) </> stateDir
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