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Add the ability to use Github repos that contain symlinks. #3015

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@aiakide aiakide commented Sep 16, 2024

Describe changes

I had noticed that my GitHub repo was having problems encoding files.
Bildschirmfoto 2024-09-10 um 18 22 10

As it turned out, the GitHub API also provides symlinks as files when they are checked into the repo.
These files have no encoding information (no decoded_content).

I added the functionality that symlinks present in a GitHub repo are also created in the local copy of the repo. The symlink information is collected first and only after all files have been downloaded from the GitHub API, the symlinks are created.

It seems that this error only occurs with the GitHub API. The response of the GitLab API also contains content and encoding information for symlinks.

{
  "file_name": "latest",
  "file_path": "logs/scheduler/latest",
  "size": 10,
  "encoding": "base64",
  "content_sha256": "c1e9c1c135c34aa0eace8cbc57559af9a250f4fb93882b4bb9bf59c8dd73dfea",
  "ref": "main",
  "blob_id": "2d1f1c07a2151a06900dc48cf22c7d5072057cdb",
  "commit_id": "c41843c07b1499bfea65d2a417d47a472873247d",
  "last_commit_id": "e05ba60199ec18f43691952d4aff4b5da6dfc7f4",
  "execute_filemode": false,
  "content": "MjAyNC0wOS0wOQ=="
}

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@aiakide aiakide force-pushed the feature/github-repo-w-symlinks branch 2 times, most recently from 6d2d33d to b79c83c Compare September 17, 2024 13:25
@@ -202,3 +215,55 @@ def check_remote_url(self, url: str) -> bool:
return True

return False


def create_symlink_in_local_repo_copy(
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I think it would be nice to have a check whether the symlink target is actually part of the repository contents. In other cases, I feel like we should not create the symlink at all.

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What do you mean exactly?
Currently the function is only called when a symlink is found in the repo content.

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What I meant here is: The symlink source could be a path which is outside of the contents of the repository, for example like this:

echo outside > outside.txt
mkdir repo
cd repo
git init
ln -s ../outside.txt outside_symlink

In most cases, when downloading the symlink the source will not exist, but in some other cases it might lead to unexpected behaviour -> I would suggest we just prevent this case alltogether and don't try to create a symlink if the file is outside of the directory we download. What do you think?

Since symlinks via the API have no content, the download of the repo did not work.
@aiakide aiakide force-pushed the feature/github-repo-w-symlinks branch from b79c83c to 88b7c60 Compare October 2, 2024 14:25
) -> None:
"""This function attempts to create a symbolic link at `symlink_dst` that points to `symlink_src`.

If a file or directory already exists at `symlink_dst`, it will
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This is not true anymore I think?

symlink_dst: The path where the symbolic link should be created.
symlink_src: The path that the symbolic link should point to.

Raises:
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To pass our CI, we'll need to remove those as they're actually not raised anymore, but a warning is logged instead.

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3 participants