ci: Workflow to create Patch release for track (#26824)

.github/scripts/determine-release-candidate-branch-for-track.mjs

@@ -0,0 +1,39 @@
+import {
+	countCommitsBetweenRefs,
+	ensureEnvVar,
+	listCommitsBetweenRefs,
+	resolveRcBranchForTrack,
+	resolveReleaseTagForTrack,
+	writeGithubOutput,
+} from './github-helpers.mjs';
+
+function main() {
+	const track = /** @type { import('./github-helpers.mjs').ReleaseTrack } */ (
+		ensureEnvVar('TRACK')
+	);
+
+	const currentTag = resolveReleaseTagForTrack(track);
+
+	const releaseCandidateBranch = resolveRcBranchForTrack(track);
+
+	if (!currentTag?.tag || !releaseCandidateBranch) {
+		throw new Error(
+			`Couldn't resolve needed parameters. currentTag.tag=${currentTag?.tag}, releaseCandidateBranch=${releaseCandidateBranch}`,
+		);
+	}
+
+	console.log(`Commits between ${releaseCandidateBranch} and ${currentTag.tag}:`);
+	console.log(listCommitsBetweenRefs(releaseCandidateBranch, currentTag.tag));
+
+	const commitCount = countCommitsBetweenRefs(releaseCandidateBranch, currentTag.tag);
+
+	writeGithubOutput({
+		release_candidate_branch: releaseCandidateBranch,
+		should_update: commitCount > 0 ? 'true' : 'false',
+	});
+}
+
+// only run when executed directly, not when imported by tests
+if (import.meta.url === `file://${process.argv[1]}`) {
+	main();
+}

.github/scripts/github-helpers.mjs

@@ -68,7 +68,7 @@ export function ensureReleaseTrack(track) {
  *
  * @param { typeof RELEASE_TRACKS[number] } track
  *
- * @returns { TagVersionInfo }
+ * @returns { TagVersionInfo | null }
  * */
 export function resolveReleaseTagForTrack(track) {
 	const commit = getCommitForRef(track);
@@ -91,9 +91,13 @@ export function resolveReleaseTagForTrack(track) {
  *
  * Returns null if the track tag or release tag is missing.
  *
- * @param { typeof RELEASE_TRACKS[number] } track
+ * @param { ReleaseTrack } track
  * */
 export function resolveRcBranchForTrack(track) {
+	if (track === 'v1') {
+		return '1.x';
+	}
+
 	const commit = getCommitForRef(track);
 	if (!commit) return null;
 
@@ -241,6 +245,25 @@ export function listTagsPointingAt(commit) {
 		.filter(Boolean);
 }
 
+/**
+ * @param {string} from
+ * @param {string} to
+ */
+export function listCommitsBetweenRefs(from, to) {
+	return sh('git', ['--no-pager', 'log', '--format="- %s (%h)', `${to}..origin/${from}`]);
+}
+
+/**
+ * @param {string} from
+ * @param {string} to
+ */
+export function countCommitsBetweenRefs(from, to) {
+	const output = sh('git', ['rev-list', '--count', `${to}..origin/${from}`]);
+	const count = parseInt(output);
+
+	return isNaN(count) ? 0 : count;
+}
+
 /**
  * @param {string} branch
  */