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Can not open worktrees [message #1802142]

Fri, 01 February 2019 18:24

nice robot

Messages: 3
Registered: February 2019

Junior Member

It seems i've tried every combination of FileRepositoryBuilder and Git.open to get access to worktrees but all attempts fail with RepositoryNotFoundException. Is there a generic means of find and opening the repository simply based on PWD?

From within the worktree folder, i've tried every combination between the setGitDir and setWorkTree commented lines:

	var repository = FileRepositoryBuilder()
		.setMustExist(true)
//      .setGitDir(File("."))
//      .setGitDir(File("./.git"))
//      .setGitDir(File("../parent/.git/worktrees/test"))
//      .setWorkTree(File("."))
//      .setWorkTree(File("./.git"))
		.readEnvironment()
		.findGitDir(
		.build()

.setGitDir(File(".") results in java.io.FileNotFoundException: ./config
.setGitDir(File("./.git") results in RepositoryNotFoundException: repository not found: ./.git though .git does exist. It is the file that points to the ../parent/.git/worktrees/test folder
.setGitDir(File("../parent/.git/worktrees/test") results in RepositoryNotFoundException: repository not found: ../parent/.git/worktrees/test
.setWorkTree(File(".") results in RepositoryNotFoundException: repository not found: ../parent/.git/worktrees/test which is interesting that it finds the path to the parent repository but can't open it?

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Re: Can not open worktrees [message #1802530 is a reply to message #1802142]

Mon, 11 February 2019 14:02

Christian Halstrick

Messages: 264
Registered: July 2009

Senior Member

It seems you have a very complicated setup of submodules and and worktrees. Are you aware of the "BUGS" section in native git's "git worktree" manpage:

Multiple checkout in general is still experimental, and the support for submodules is incomplete. It is NOT recommended to make multiple checkouts of a superproject.

Could it be you are doing exactly that .... multiple checkouts of a superproject?

Is there any public repository which you can share or steps how to reproduce your repository setup? I would like to clone and investigate.

But what I can see already now:
- You seem to be in a submodule because you don't have a .git folder but a .git file pointing to ../parent/.git/worktrees/test
- You seem to use multiple workspaces because the content of your .git file contains ....git/worktrees/...
- Typically the content of a .git file in a submodule directly after a native git recursive clone is like "gitdir: <relativePathToRootRepo>/.git/modules/<pathToSubmodule>. But youre .git file content is pointing to a <relativePathToRootRepo>/.git/worktrees/... folder? Strange. Maybe you have recursively cloned a root repo and then switched to multiple workspaces and then, in one of the workspaces you added a new submodule. Right?

Ciao
Chris

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Re: Can not open worktrees [message #1802531 is a reply to message #1802530]

Mon, 11 February 2019 14:13

nice robot

Messages: 3
Registered: February 2019

Junior Member

Thanks for the reply.

I actually do not have a complicated setup and the repository does not have any submodules. This is all I do:

git clone REPOSITORY main
cd main
git worktree add BRANCH ../worktree

And I'm trying to access the worktree folder's git history.

I will create a demo repository in the coming days to show and demo the precise problem.

[Updated on: Mon, 11 February 2019 14:15]

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Re: Can not open worktrees [message #1802919 is a reply to message #1802530]

Tue, 19 February 2019 03:40

nice robot

Messages: 3
Registered: February 2019

Junior Member

This is almost certainly the same problem as submodules because worktrees use the same technique of a `.git` _file_ that points to the repository.

Here's the demo:

https://github.com/nicerobot/jgit-1802531

What are the plans to resolve this? It seems like an incredibly simple solution. If `.git` is a file, read its contents and open the repository to which it points.

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