forked from SteamWar/SteamWar
194 lines
8.2 KiB
YAML
194 lines
8.2 KiB
YAML
name: Backport CommonCore
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on:
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pull_request:
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types:
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- closed
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branches:
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- main
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permissions:
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contents: write
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pull-requests: write
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env:
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BACKPORT_PATH: CommonCore
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BACKPORT_BRANCH_PREFIX: backport/commoncore
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DISABLE_BACKPORT_LABEL: no-backport
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jobs:
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backport:
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name: Create CommonCore backport PRs
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v6
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with:
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fetch-depth: 0
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- name: Check backport eligibility
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id: eligibility
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shell: bash
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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run: |
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set -euo pipefail
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api_url="${GITHUB_API_URL:-${GITHUB_SERVER_URL}/api/v1}"
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echo "Backport debug: event=${GITHUB_EVENT_NAME:-unknown}"
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echo "Backport debug: server=${GITHUB_SERVER_URL}"
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echo "Backport debug: api=${api_url}"
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echo "Backport debug: repository=${GITHUB_REPOSITORY}"
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echo "Backport debug: action=$(jq -r '.action // ""' "$GITHUB_EVENT_PATH")"
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merged="$(jq -r '.pull_request.merged // (.pull_request.merged_at != null)' "$GITHUB_EVENT_PATH")"
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base_branch="$(jq -r '.pull_request.base.ref' "$GITHUB_EVENT_PATH")"
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has_disable_label="$(jq -r --arg disable_backport_label "$DISABLE_BACKPORT_LABEL" 'any(.pull_request.labels[]?; .name == $disable_backport_label)' "$GITHUB_EVENT_PATH")"
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echo "Backport debug: pr=$(jq -r '.pull_request.number // ""' "$GITHUB_EVENT_PATH") base=${base_branch} merged=${merged}"
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echo "Backport debug: disable label present=${has_disable_label}"
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{
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echo "should_backport=$([[ "$merged" == "true" && "$base_branch" == "main" && "$has_disable_label" != "true" ]] && echo true || echo false)"
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echo "pr_number=$(jq -r '.pull_request.number' "$GITHUB_EVENT_PATH")"
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echo "pr_title<<EOF"
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jq -r '.pull_request.title' "$GITHUB_EVENT_PATH"
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echo "EOF"
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} >> "$GITHUB_OUTPUT"
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labels="$(curl -fsS \
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-H "Accept: application/json" \
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-H "Authorization: token ${GITHUB_TOKEN}" \
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"${api_url}/repos/${GITHUB_REPOSITORY}/labels")"
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if ! jq -e --arg disable_backport_label "$DISABLE_BACKPORT_LABEL" 'any(.[]; .name == $disable_backport_label)' <<< "$labels" >/dev/null; then
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curl -fsS -X POST \
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-H "Accept: application/json" \
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-H "Authorization: token ${GITHUB_TOKEN}" \
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-H "Content-Type: application/json" \
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-d "$(jq -n --arg name "$DISABLE_BACKPORT_LABEL" --arg color "ededed" --arg description "Disable automatic CommonCore backporting for this pull request." '{name: $name, color: $color, description: $description}')" \
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"${api_url}/repos/${GITHUB_REPOSITORY}/labels"
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fi
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- name: Create backport pull requests
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if: steps.eligibility.outputs.should_backport == 'true'
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shell: bash
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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PR_NUMBER: ${{ steps.eligibility.outputs.pr_number }}
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PR_TITLE: ${{ steps.eligibility.outputs.pr_title }}
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run: |
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set -euo pipefail
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api_url="${GITHUB_API_URL:-${GITHUB_SERVER_URL}/api/v1}"
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repo_api_path="/repos/${GITHUB_REPOSITORY}"
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api_request() {
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local method="$1"
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local path="$2"
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local output="$3"
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local data_file="${4:-}"
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local status
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local args=(-sS -X "$method" -H "Accept: application/json" -H "Authorization: token ${GITHUB_TOKEN}" -w "%{http_code}" -o "$output")
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if [[ -n "$data_file" ]]; then
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args+=(-H "Content-Type: application/json" --data-binary "@${data_file}")
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fi
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echo "Backport debug: ${method} ${path}"
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if ! status="$(curl "${args[@]}" "${api_url}${path}")"; then
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echo "Backport debug: ${method} ${path} failed before HTTP status was captured."
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if [[ -s "$output" ]]; then
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echo "Backport debug: response body:"
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cat "$output"
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fi
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return 1
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fi
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echo "Backport debug: ${method} ${path} -> HTTP ${status}"
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if [[ ! "$status" =~ ^2 ]]; then
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echo "Backport debug: response body:"
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cat "$output"
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return 1
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fi
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}
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echo "Backport debug: event=${GITHUB_EVENT_NAME:-unknown}"
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echo "Backport debug: server=${GITHUB_SERVER_URL}"
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echo "Backport debug: api=${api_url}"
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echo "Backport debug: repository=${GITHUB_REPOSITORY}"
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echo "Backport debug: pr=${PR_NUMBER}"
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echo "Backport debug: actor=${GITHUB_ACTOR:-unknown}"
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git config user.name "SteamWar Backport Bot"
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git config user.email "actions@steamwar.de"
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if [[ "${GITHUB_SERVER_URL}" == https://* ]]; then
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auth_host="${GITHUB_SERVER_URL#https://}"
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git remote set-url origin "https://oauth2:${GITHUB_TOKEN}@${auth_host}/${GITHUB_REPOSITORY}.git"
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fi
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git fetch --prune origin '+refs/heads/version/*:refs/remotes/origin/version/*'
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api_request GET "${repo_api_path}" repo-debug.json
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jq -r '"Backport debug: repo permissions admin=\(.permissions.admin // "unknown") push=\(.permissions.push // "unknown") pull=\(.permissions.pull // "unknown")"' repo-debug.json || true
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echo "Backport debug: GET ${repo_api_path}/pulls/${PR_NUMBER}.diff"
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curl -fsSL -w "Backport debug: GET ${repo_api_path}/pulls/${PR_NUMBER}.diff -> HTTP %{http_code}\n" \
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-H "Accept: text/plain" \
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-H "Authorization: token ${GITHUB_TOKEN}" \
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"${api_url}${repo_api_path}/pulls/${PR_NUMBER}.diff" \
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-o pull-request.diff
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if ! grep -Eq "^diff --git a/${BACKPORT_PATH}/" pull-request.diff; then
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echo "Pull request #${PR_NUMBER} has no ${BACKPORT_PATH} changes to backport."
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exit 0
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fi
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mapfile -t target_branches < <(git for-each-ref --format='%(refname:strip=3)' refs/remotes/origin/version)
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if [[ "${#target_branches[@]}" -eq 0 ]]; then
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echo "No version/* branches found."
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exit 0
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fi
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for target_branch in "${target_branches[@]}"; do
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safe_target="${target_branch//\//-}"
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backport_branch="${BACKPORT_BRANCH_PREFIX}/pr-${PR_NUMBER}-to-${safe_target}"
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git checkout -B "${backport_branch}" "origin/${target_branch}"
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git reset --hard "origin/${target_branch}"
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if ! git apply --3way --index --include="${BACKPORT_PATH}/**" pull-request.diff; then
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echo "Failed to apply CommonCore backport for ${target_branch}."
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exit 1
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fi
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if git diff --cached --quiet; then
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echo "CommonCore changes from #${PR_NUMBER} are already present in ${target_branch}."
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continue
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fi
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git commit -m "Backport CommonCore changes from #${PR_NUMBER}" -m "${PR_TITLE}"
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git push --force-with-lease origin "${backport_branch}"
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api_request GET "${repo_api_path}/pulls?state=open" open-pulls.json
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open_pr_number="$(jq -r --arg base "$target_branch" --arg head "$backport_branch" '[.[] | select(.base.ref == $base and .head.ref == $head) | (.number // .index)][0] // empty' open-pulls.json)"
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if [[ -n "$open_pr_number" ]]; then
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echo "Backport PR #${open_pr_number} already exists for ${target_branch}."
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continue
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fi
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pr_body="$(printf 'Automatic CommonCore backport of #%s.\n\nOriginal PR title: %s\n\nOnly files below `CommonCore/` are included.' "$PR_NUMBER" "$PR_TITLE")"
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jq -n \
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--arg base "$target_branch" \
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--arg head "$backport_branch" \
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--arg title "Backport CommonCore changes from #${PR_NUMBER} to ${target_branch}" \
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--arg body "$pr_body" \
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'{base: $base, head: $head, title: $title, body: $body}' > create-pull.json
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echo "Backport debug: create PR base=${target_branch} head=${backport_branch}"
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api_request POST "${repo_api_path}/pulls" create-pull-response.json create-pull.json
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done
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