git-annex/Assistant/MakeRepo.hs
Joey Hess 2fd27c6df5
assistant: When creating a new repository use v7 adjusted branches with annex.thin
Rather than direct mode, which this is a small step on the path to
removing.

Init on a crippled filesystem already used v7 adjusted branches,
and like that, this doesn't pose any interoperability issues with old
versions of git-annex that clone the same repo, because files are only
unlocked on the adjusted branch.
2019-08-26 12:54:14 -04:00

96 lines
3 KiB
Haskell

{- making local repositories
-
- Copyright 2012-2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Assistant.MakeRepo where
import Assistant.WebApp.Common
import Annex.Init
import qualified Git.Construct
import qualified Git.Config
import qualified Git.Command
import qualified Git.Branch
import qualified Annex
import Annex.UUID
import Annex.AdjustedBranch
import Annex.Action
import Annex.Version
import Upgrade
import Types.StandardGroups
import Logs.PreferredContent
import qualified Annex.Branch
import Utility.Process.Transcript
import Config
{- Makes a new git repository. Or, if a git repository already
- exists, returns False. -}
makeRepo :: FilePath -> Bool -> IO Bool
makeRepo path bare = ifM (probeRepoExists path)
( return False
, do
(transcript, ok) <-
processTranscript "git" (toCommand params) Nothing
unless ok $
error $ "git init failed!\nOutput:\n" ++ transcript
return True
)
where
baseparams = [Param "init", Param "--quiet"]
params
| bare = baseparams ++ [Param "--bare", File path]
| otherwise = baseparams ++ [File path]
{- Runs an action in the git repository in the specified directory. -}
inDir :: FilePath -> Annex a -> IO a
inDir dir a = do
state <- Annex.new =<< Git.Config.read =<< Git.Construct.fromPath dir
Annex.eval state $ a `finally` stopCoProcesses
{- Creates a new repository, and returns its UUID. -}
initRepo :: Bool -> Bool -> FilePath -> Maybe String -> Maybe StandardGroup -> IO UUID
initRepo True primary_assistant_repo dir desc mgroup = inDir dir $ do
initRepo' desc mgroup
{- Initialize the master branch, so things that expect
- to have it will work, before any files are added. -}
unlessM (Git.Config.isBare <$> gitRepo) $
void $ inRepo $ Git.Branch.commitCommand Git.Branch.AutomaticCommit
[ Param "--quiet"
, Param "--allow-empty"
, Param "-m"
, Param "created repository"
]
{- Repositories directly managed by the assistant use v7 unlocked
- with annex.thin set.
-
- Automatic gc is disabled, as it can be slow. Insted, gc is done
- once a day.
-}
when primary_assistant_repo $ do
void $ upgrade True versionForAdjustedBranch
void $ enterAdjustedBranch (LinkAdjustment UnlockAdjustment)
setConfig (annexConfig "thin") (Git.Config.boolConfig True)
inRepo $ Git.Command.run
[Param "config", Param "gc.auto", Param "0"]
getUUID
{- Repo already exists, could be a non-git-annex repo though so
- still initialize it. -}
initRepo False _ dir desc mgroup = inDir dir $ do
initRepo' desc mgroup
getUUID
initRepo' :: Maybe String -> Maybe StandardGroup -> Annex ()
initRepo' desc mgroup = unlessM isInitialized $ do
initialize desc Nothing
u <- getUUID
maybe noop (defaultStandardGroup u) mgroup
{- Ensure branch gets committed right away so it is
- available for merging immediately. -}
Annex.Branch.commit =<< Annex.Branch.commitMessage
{- Checks if a git repo exists at a location. -}
probeRepoExists :: FilePath -> IO Bool
probeRepoExists dir = isJust <$>
catchDefaultIO Nothing (Git.Construct.checkForRepo dir)