Bare Repository has neither a working tree, nor an index via execution of git hooks

[lfernandofaraujo]

When execute the assemble task via git hooks with the plugin androidGitVersion configured, the build was failed.

Task failed with an exception.

• Where:
  Script '/home//AndroidStudioProjects//script-git-version.gradle' line: 17

• What went wrong:
  A problem occurred evaluating script.

Bare Repository has neither a working tree, nor an index

Searching the web, i found this ask:
Jgit:Bare Repository has neither a working tree, nor an index

@mincong answer this:
Opening a Git repository using FileRepositoryBuilder is tricky. This is an internal class. Its method setGitDir(File) defines the location of the repository metadata (the .git folder). In other words, it is used to construct a Git bare repository.

Suggestions of implementation:
Before:

private Results scan() {
        validateSettings()
        Results results = new Results()

        Repository repo
        try {
            repo = new FileRepositoryBuilder()
                    .readEnvironment()
                    .findGitDir(project.projectDir)
                    .build()
        } catch (IllegalArgumentException ignore) {
            // No repo found
            return results
        }

        def git = Git.wrap(repo)
[...]
}

After:

private Results scan() {
        validateSettings()
        Results results = new Results()

        Git git
        Repository repo
        try {
            git = Git.open(project.projectDir)
            repo = git.repository
        } catch (IllegalArgumentException ignore) {
            // No repo found
            return results
        }
        def head = repo.findRef(Constants.HEAD).getTarget()
[...]
}

Link: https://stackoverflow.com/questions/49282593/jgitbare-repository-has-neither-a-working-tree-nor-an-index

[gladed]

This is good but it break's everyone's favorite git feature: submodules. I'm looking into this.

[gladed]

I think the real problem above may be that some aspect of your hooks is operating without access to the .git tree, causing RepositoryNotFoundException which is not caught.

In this case, androidGitVersion can print a warning message and continue.

[gladed]

@Ferrugemm this is now published in 0.4.14; if this doesn't work please let me know or reopen.

[lfernandofaraujo]

Hey @gladed, thanks for the attention and the upgrades, but still don't working :(

The stacktrace from my machine (Linux 18.04 LTS)

~/AndroidStudioProjects/<project>   <branch>/gladed-plugin ✚  git commit -m "new version of gladed plugin v0.4.14"

1: Task failed with an exception.
-----------
* Where:
Script '/.../<file>.gradle' line: 10

* What went wrong:
A problem occurred evaluating script.
> Bare Repository has neither a working tree, nor an index

I made the modification above and generated the local .jar and it works to me.

[gladed]

Can I reproduce this locally? What kind of a hook is installed?

[lfernandofaraujo]

Yes, you can!

It is pre-commit hooks and basically make auto check of my project.
This article drives the setup process: https://medium.com/@alistair.cerio/android-ktlint-and-pre-commit-git-hook-5dd606e230a9

Besides that, i've your plugin configured in app/build.gradle, with .name and the .code.

[gladed]

Here's what I did, and it worked. Are you sure the repo you're working from is present and not bare? Or is this a result you're only getting from CI on a server?

$ cat >.git/hooks/pre-commit
#!/bin/bash

git stash -q --keep-index

./gradlew androidGitVersion

RESULT=$?

git stash pop -q

# return 1 exit code if running checks fails
[ $RESULT -ne 0 ] && exit 1
exit 0
^D

$ chmod a+x .git/hooks/pre-commit

$ git commit -m "temp" --allow-empty
...
> Task :...:androidGitVersion
androidGitVersion.name  1.2.3
androidGitVersion.code  1002003

BUILD SUCCESSFUL in 1s
5 actionable tasks: 5 executed
[master 98c6276f] temp

[lfernandofaraujo]

@gladed yes, it is my local machine and repo :(

How can i verify the not bare repository?

[gladed]

https://stackoverflow.com/questions/1830701/how-do-i-check-if-a-repository-is-bare

[lfernandofaraujo]

From my .sh and terminal:

$ git rev-parse --is-bare-repository

The result is false

[gladed]

Then there must be something else wrong on your local setup. jgit appears to be reporting that it cannot find your working file tree.

Note that the implementation in this project matches published jgit documentation and FileRepositoryBuilder is an ordinary, public, non-deprecated class.

[lfernandofaraujo]

Thanks @gladed 😄