crate-io.yml

---
name: "Release Rust 🦀"
on:
  workflow_dispatch:
  push:
    branches:
      - "master"

permissions:
  contents: read

jobs:
  release_rust:
    runs-on: ubuntu-22.04
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v6
      - uses: dtolnay/rust-toolchain@stable
      - name: Publish crates whose git version is newer than crates.io
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
        run: |
          set -euo pipefail
          # Dependency order: each crate comes after the in-repo crates it depends on.
          for dir in cln-rpc cln-grpc plugins lsps-types; do
            metadata=$(cargo metadata --no-deps --format-version 1 --manifest-path "$dir/Cargo.toml")
            pkg=$(jq -r --arg m "$PWD/$dir/Cargo.toml" \
              '.packages[] | select(.manifest_path == $m) | "\(.name) \(.version)"' <<< "$metadata")
            name=${pkg% *}
            version=${pkg#* }
            decision=$(python3 - "$name" "$version" <<'EOF'
          import json, sys, urllib.error, urllib.request

          def semver_key(v):
              core, _, pre = v.split("+")[0].partition("-")
              nums = tuple(int(x) for x in core.split("."))
              if not pre:
                  return nums, 1, ()
              ids = tuple((0, int(i), "") if i.isdigit() else (1, 0, i) for i in pre.split("."))
              return nums, 0, ids

          name, local = sys.argv[1], sys.argv[2]
          url = f"https://index.crates.io/{name[:2]}/{name[2:4]}/{name}"
          try:
              with urllib.request.urlopen(url, timeout=30) as resp:
                  published = [json.loads(line)["vers"] for line in resp.read().decode().splitlines() if line]
          except urllib.error.HTTPError as err:
              if err.code != 404:
                  raise
              published = []
          newer = not published or semver_key(local) > max(semver_key(v) for v in published)
          print("publish" if newer else "skip")
          EOF
            )
            if [ "$decision" = "publish" ]; then
              echo "Publishing $name $version from $dir"
              cargo publish --manifest-path "$dir/Cargo.toml"
            else
              echo "Skipping $name $version: crates.io already has an equal or newer version"
            fi
          done