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github-metadata-backup

Download issues and pull-requests from the GitHub API and store as JSON files. Supports incremental updates. The tool is written in Rust.

Usage

The GitHub API is rate-limted to 60 requests per hour without authentication. This tool requires a GitHub Personal Access Token, which increases the rate-limit to 5000 requests per hour. A classic token is recommended over the newer fine-grained tokens. Some of the events might be missing from the backup with the fine-grained tokens. See https://github.com/orgs/community/discussions/58534 for more information.

The token an either be supplied to the github-metadata-backup binary via the -p/--personal-access-token command line option or placed in a file and read from there with the -f/--personal-access-token-file option. The tool also requires an --owner (a GitHub user or organization) and the --repo (the repository of that owner) to download the metadata from. The backup will be placed in the directory defined with -d/--destination. Make sure the tool has the required permissions to write to it.

Usage: github-metadata-backup [OPTIONS] --owner <OWNER> --repo <REPO> --destination <PATH>

Options:
  -o, --owner <OWNER>
          Owner of the repository to backup
  -r, --repo <REPO>
          Name of the repository to backup
  -p, --personal-access-token <PERSONAL_ACCESS_TOKEN>
          Personal Access Token to the GitHub API supplied via the command line
  -f, --personal-access-token-file <PATH>
          Personal Access Token to the GitHub API read from a file
  -d, --destination <PATH>
          Destination where the backup should be written to
  -h, --help
          Print help
  -V, --version
          Print version

The log-level can be controlled with the RUST_LOG environment variable. By default, it's RUST_LOG=info.

Example

To backup the metadata from the bitcoin/bitcoin repository to the bitcoin-bitcoin directory while reading the file from the read-only-github-access-token.sec file the following command can be used:

github-metadata-backup --owner bitcoin --repo bitcoin --destination bitcoin-bitcoin --personal-access-token-file read-only-github-access-token.sec

This creates the bitcoin-bitcoin directory with the issues and pulls subdirectories. It requests metadata until the rate-limit is reached, waits until requests are allowed again, and then continues. Once finished with the initial backup, which can take a few hours with large repositories, it writes a state.json file. On subsequent runs, this file is read and only an incremental backup is made. To do a full backup again, delete the state.json file. The old backup will be overwritten. The JSON files are formatted to be easily trackable in git. It makes sense to commit each incremental backup.

Nix Package and module

A Nix package and module for the github-metadata-backup tool are avaliable in my personal nix-package-collection. The package can be run with:

nix run github:0xb10c/nix#github-metadata-backup

Mirroring GitHub metadata

The backups can be used as input for a GitHub mirror. See the github-metadata-mirror project for details.