Test Backporting

Signed-off-by: Chaoscaot <max@maxsp.de>
This commit is contained in:
2026-05-15 14:15:35 +02:00
parent 38603fbe45
commit f8397b8bab
2 changed files with 0 additions and 290 deletions
-259
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@@ -1,259 +0,0 @@
name: Backport CommonCore
on:
pull_request:
types: [closed]
branches:
- main
permissions:
contents: write
issues: write
pull-requests: write
jobs:
backport:
name: Backport CommonCore changes
runs-on: ubuntu-latest
if: ${{ github.event.pull_request.merged == true && github.event.pull_request.base.ref == 'main' }}
steps:
- name: Checkout sources
uses: actions/checkout@v6
with:
ref: main
fetch-depth: 0
token: ${{ secrets.GITEA_TOKEN }}
- name: Create version branch backports
shell: bash
env:
GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
run: |
set -euo pipefail
api() {
local method="$1"
local path="$2"
local body="${3:-}"
local response_file
local status
response_file="$(mktemp)"
if [[ -n "$body" ]]; then
status="$(curl --silent --show-error \
-X "$method" \
-H "Authorization: token ${GITEA_TOKEN}" \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
--data "$body" \
--output "$response_file" \
--write-out "%{http_code}" \
"${GITHUB_API_URL}${path}")"
else
status="$(curl --silent --show-error \
-X "$method" \
-H "Authorization: token ${GITEA_TOKEN}" \
-H "Accept: application/json" \
--output "$response_file" \
--write-out "%{http_code}" \
"${GITHUB_API_URL}${path}")"
fi
if [[ "$status" -lt 200 || "$status" -ge 300 ]]; then
echo "Gitea API ${method} ${path} failed with HTTP ${status}" >&2
cat "$response_file" >&2
rm -f "$response_file"
return 1
fi
cat "$response_file"
rm -f "$response_file"
}
repo_path="/repos/${GITHUB_REPOSITORY}"
repo_owner="${GITHUB_REPOSITORY%%/*}"
pr_number="$(jq -r '.number' "$GITHUB_EVENT_PATH")"
pr_title="$(jq -r '.pull_request.title // ""' "$GITHUB_EVENT_PATH")"
event_commit="$(jq -r '.pull_request.merge_commit_sha // .pull_request.merged_commit_id // .commit_id // env.GITHUB_SHA' "$GITHUB_EVENT_PATH")"
if jq -e '.pull_request.labels[]? | select(.name == "no-backport")' "$GITHUB_EVENT_PATH" >/dev/null; then
echo "PR #${pr_number} has label no-backport; skipping automatic backport."
exit 0
fi
commoncore_files=()
page=1
while true; do
response="$(api GET "${repo_path}/pulls/${pr_number}/files?page=${page}&limit=50")"
count="$(jq 'length' <<< "$response")"
while IFS= read -r file; do
[[ -n "$file" ]] && commoncore_files+=("$file")
done < <(jq -r '.[] | (.filename // .path // .name // "") | select(startswith("CommonCore/"))' <<< "$response")
[[ "$count" -lt 50 ]] && break
page=$((page + 1))
done
if [[ "${#commoncore_files[@]}" -eq 0 ]]; then
echo "PR #${pr_number} did not change CommonCore/; nothing to backport."
exit 0
fi
echo "PR #${pr_number} changed CommonCore files:"
printf ' - %s\n' "${commoncore_files[@]}"
pr_commits=()
page=1
while true; do
response="$(api GET "${repo_path}/pulls/${pr_number}/commits?page=${page}&limit=50")"
count="$(jq 'length' <<< "$response")"
while IFS= read -r commit; do
[[ -n "$commit" ]] && pr_commits+=("$commit")
done < <(jq -r '.[] | .sha // .id // empty' <<< "$response")
[[ "$count" -lt 50 ]] && break
page=$((page + 1))
done
source_commits=("$event_commit")
if [[ "${#pr_commits[@]}" -gt 1 ]]; then
for commit in "${pr_commits[@]}"; do
if [[ "$commit" == "$event_commit" ]]; then
source_commits=("${pr_commits[@]}")
break
fi
done
fi
echo "Using source commit plan:"
printf ' - %s\n' "${source_commits[@]}"
git config --global user.name "SteamWar Backport Bot"
git config --global user.email "backport-bot@steamwar.de"
git fetch origin '+refs/heads/*:refs/remotes/origin/*'
for commit in "${source_commits[@]}"; do
git cat-file -e "${commit}^{commit}"
done
apply_commoncore_change() {
local commit="$1"
local parent
local patch_file
if [[ "$(git rev-list --parents -n 1 "$commit" | wc -w)" -gt 2 ]]; then
parent="${commit}^1"
else
parent="${commit}^"
fi
patch_file="$(mktemp)"
git diff --binary "$parent" "$commit" -- CommonCore/ > "$patch_file"
if [[ ! -s "$patch_file" ]]; then
echo "Commit ${commit} has no CommonCore/ diff; skipping it."
rm -f "$patch_file"
return 0
fi
if git apply --reverse --check "$patch_file" >/dev/null 2>&1; then
echo "CommonCore/ diff from ${commit} is already present; skipping it."
rm -f "$patch_file"
return 0
fi
if git apply --3way --index "$patch_file"; then
rm -f "$patch_file"
return 0
fi
rm -f "$patch_file"
return 1
}
mapfile -t version_branches < <(
git for-each-ref --format='%(refname:short)' refs/remotes/origin/version |
sed 's#^origin/##' |
sort -u
)
if [[ "${#version_branches[@]}" -eq 0 ]]; then
echo "No origin/version/* branches found; nothing to backport."
exit 0
fi
failures=()
for target_branch in "${version_branches[@]}"; do
safe_target="$(sed -E 's#[^A-Za-z0-9._-]+#-#g; s#^-+##; s#-+$##' <<< "$target_branch")"
head_branch="backport-pr-${pr_number}-to-${safe_target}"
existing_pr="$(api GET "${repo_path}/pulls?state=open&base_branch=$(jq -rn --arg value "$target_branch" '$value|@uri')&limit=50" |
jq -r --arg head "$head_branch" '.[] | select(.head.ref == $head) | .number' |
head -n 1)"
if [[ -n "$existing_pr" ]]; then
echo "Backport PR #${existing_pr} already exists for ${target_branch}; leaving it unchanged."
continue
fi
echo "Creating ${head_branch} from ${target_branch}"
git checkout -B "$head_branch" "origin/${target_branch}"
for commit in "${source_commits[@]}"; do
if apply_commoncore_change "$commit"; then
continue
fi
echo "Failed to apply CommonCore/ diff from ${commit} to ${target_branch}" >&2
exit 1
done
if git diff --cached --quiet; then
echo "${target_branch} already contains the CommonCore/ change; no PR needed."
git checkout main
continue
fi
git commit -m "Backport CommonCore changes from #${pr_number}" \
-m "Source PR: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/pulls/${pr_number}" \
-m "Only CommonCore/ changes are included in this backport."
git push origin "HEAD:refs/heads/${head_branch}" --force-with-lease
if [[ "${#source_commits[@]}" -eq 1 ]]; then
source_text="Source commit: \`${source_commits[0]}\`"
else
source_text="Source commits:"
for commit in "${source_commits[@]}"; do
source_text="${source_text}"$'\n'"- \`${commit}\`"
done
fi
body="$(cat <<BODY
Automated backport of #${pr_number} to \`${target_branch}\` because the source PR changed \`CommonCore/\`.
Source PR: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/pulls/${pr_number}
${source_text}
This PR will be merged automatically by the Pull Request Build workflow after a successful build.
BODY
)"
payload="$(jq -n \
--arg base "$target_branch" \
--arg head "${repo_owner}:${head_branch}" \
--arg title "Backport #${pr_number} to ${target_branch}: ${pr_title}" \
--arg body "$body" \
'{base: $base, head: $head, title: $title, body: $body}')"
api POST "${repo_path}/pulls" "$payload" >/dev/null
echo "Created backport PR from ${head_branch} to ${target_branch}."
git checkout main
done
if [[ "${#failures[@]}" -gt 0 ]]; then
echo "Backport failures:"
printf ' - %s\n' "${failures[@]}"
exit 1
fi
-31
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@@ -39,34 +39,3 @@ jobs:
echo "$SW_MAVEN_CREDENTIALS" > steamwar.properties echo "$SW_MAVEN_CREDENTIALS" > steamwar.properties
- name: Build with Gradle - name: Build with Gradle
run: ./gradlew build --no-daemon run: ./gradlew build --no-daemon
merge-backport:
name: Merge backport
runs-on: ubuntu-latest
needs: build
if: ${{ startsWith(github.event.pull_request.base.ref, 'version/') && startsWith(github.event.pull_request.head.ref, 'backport-pr-') }}
permissions:
contents: write
issues: write
pull-requests: write
steps:
- name: Merge successful backport PR
shell: bash
env:
GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
run: |
set -euo pipefail
pr_number="$(jq -r '.number' "$GITHUB_EVENT_PATH")"
target_branch="$(jq -r '.pull_request.base.ref' "$GITHUB_EVENT_PATH")"
payload="$(jq -n \
--arg title "Merge backport #${pr_number} into ${target_branch}" \
'{Do: "merge", MergeTitleField: $title, MergeMessageField: "Automatic CommonCore backport after successful build.", delete_branch_after_merge: true}')"
curl --fail --silent --show-error \
-X POST \
-H "Authorization: token ${GITEA_TOKEN}" \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
--data "$payload" \
"${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/pulls/${pr_number}/merge"