git-annex/Command/PostReceive.hs
Joey Hess 3afc7d83f2
noCommit for PostReceive
This was noticed because it broke the datalad test suite, which pushed
to the remote and then fetched to check if it had received the expected
branches. Auto-init caused the git-annex branch on the remote to
diverge, breaking that test.

https://github.com/datalad/datalad/issues/1319#issuecomment-281649518

The auto-init still happens, it's staged in the journal, and will be
commited by some later git-annex command when it runs. Which is fine,
it's the same as that later command doing the auto-init.

This commit was supported by the NSF-funded DataLad project
2017-02-23 18:37:02 -04:00

51 lines
1.4 KiB
Haskell

{- git-annex command
-
- Copyright 2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.PostReceive where
import Command
import qualified Annex
import Git.Types
import Annex.UpdateInstead
import Command.Sync (mergeLocal, prepMerge, mergeConfig, getCurrBranch)
-- This does not need to modify the git-annex branch to update the
-- work tree, but auto-initialization might change the git-annex branch.
-- Since it would be surprising for a post-receive hook to make such a
-- change, that's prevented by noCommit.
cmd :: Command
cmd = noCommit $
command "post-receive" SectionPlumbing
"run by git post-receive hook"
paramNothing
(withParams seek)
seek :: CmdParams -> CommandSeek
seek _ = whenM needUpdateInsteadEmulation $ do
fixPostReceiveHookEnv
commandAction updateInsteadEmulation
{- When run by the post-receive hook, the cwd is the .git directory,
- and GIT_DIR=. It's not clear why git does this.
-
- Fix up from that unusual situation, so that git commands
- won't try to treat .git as the work tree. -}
fixPostReceiveHookEnv :: Annex ()
fixPostReceiveHookEnv = do
g <- Annex.gitRepo
case location g of
Local { gitdir = ".", worktree = Just "." } ->
Annex.adjustGitRepo $ \g' -> pure $ g'
{ location = (location g')
{ worktree = Just ".." }
}
_ -> noop
updateInsteadEmulation :: CommandStart
updateInsteadEmulation = do
prepMerge
mergeLocal mergeConfig =<< join getCurrBranch