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ci: harden publish workflow (idempotent, checkout v5) #5

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Merged
VladPr merged 1 commit into from
Jul 14, 2026
Merged

ci: harden publish workflow (idempotent, checkout v5) #5

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28 changes: 26 additions & 2 deletions .github/workflows/publish.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,10 @@ name: Publish to crates.io
# Auth uses crates.io Trusted Publishing (OIDC) — no long-lived token is
# stored in GitHub. One-time setup on crates.io: add a Trusted Publisher for
# this repository pointing at this workflow file (publish.yml).
#
# Idempotent: if the tag's version is already on crates.io (e.g. it was
# published manually, or a tag was re-pushed), publish is skipped and the run
# succeeds — instead of failing at "crate version already uploaded".

on:
push:
Expand All @@ -18,11 +22,12 @@ jobs:
id-token: write
contents: read
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v5

- uses: dtolnay/rust-toolchain@stable

- name: Verify tag matches Cargo.toml version
- name: Resolve version and check tag
id: version
run: |
TAG="${GITHUB_REF_NAME#v}"
CRATE_VER="$(grep -m1 '^version' Cargo.toml | sed -E 's/.*"(.*)".*/\1/')"
Expand All @@ -31,12 +36,31 @@ jobs:
echo "::error::tag v$TAG does not match Cargo.toml version $CRATE_VER"
exit 1
fi
echo "version=$CRATE_VER" >> "$GITHUB_OUTPUT"

- name: Check whether this version is already on crates.io
id: published
env:
VERSION: ${{ steps.version.outputs.version }}
run: |
CODE="$(curl -sS -o /dev/null -w '%{http_code}' \
-H 'User-Agent: cch-release-workflow (github.com/Rodeapps/cch)' \
"https://crates.io/api/v1/crates/cch/${VERSION}" || echo 000)"
echo "crates.io returned HTTP $CODE for cch ${VERSION}"
if [ "$CODE" = "200" ]; then
echo "already=true" >> "$GITHUB_OUTPUT"
echo "::notice::cch ${VERSION} is already published — skipping publish."
else
echo "already=false" >> "$GITHUB_OUTPUT"
fi

- name: Authenticate to crates.io (Trusted Publishing)
if: steps.published.outputs.already != 'true'
uses: rust-lang/crates-io-auth-action@v1
id: auth

- name: Publish
if: steps.published.outputs.already != 'true'
run: cargo publish
env:
CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}
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