[Rails][POC] Web IDE Fast File system based on Private Origin File System

Issue: [WebIDE] [POC] Explore using origin private fil... (gitlab-web-ide#499 - closed)

What does this MR do and why?

It adds CORS headers to the following endpoints:

• '/info/refs'
• '/git-upload-pack'

These endpoints implement the git HTTP protocol used to perform git operations over HTTP. The Merge Request adds the following CORS headers to these endpoints' HTTP response:

1. Access-Control-Allow-Origin set to the Web IDE assets host origin.
2. Access-Control-Allow-Methods
   1. get for /info/refs
   2. options post for /git-uploadpack
3. Access-Control-Allow-Header Set to Authorization to authenticate requests to protected repositories.

Why

We are exploring the implementation of a full-fledged file system and git client in the Web IDE using the Origin Private File System API and isomorphic-git. Rather than building an in-memory file tree, the new file system performs a git clone operation over HTTP and stores the files in a secure, high performant file system that it's only accessible to a single origin.

References

• [WebIDE] [POC] Explore using origin private fil... (gitlab-web-ide#499 - closed)
• Adding CORS headers for git clone and push (#20590)

Screenshots or screen recordings

There aren't user-facing changes in this MR.

How to set up and validate locally

1. Set the following configuration in your gdk.yml file:

   workhorse:
     skip_compile: false

2. Run gdk reconfigure && gdk restart .

3. Run cd <gdk-dir>/gitlab/workhorse .

4. Run make && gdk restart gitlab-workhorse.

5. Run rails c

6. Update the vscode_extension_marketplace_extension_host_domain application setting introduced in this MR with the domain that you use to test the Web IDE. For example, I set up web-ide.test in my local environment and the update expression is: Gitlab::CurrentSettings.update!({ vscode_extension_marketplace_extension_host_domain: 'web-ide.test' } .

7. Run gdk restart rails-web

Follow the instructions in gitlab-web-ide!536 (closed) to test the OPFS file system in the Web IDE example server.

Use the instructions in the Merge Request gitlab-web-ide!536 (closed) to test these changes.

MR acceptance checklist

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