@W-23751548: Add manual Homebrew release promotion

.github/workflows/promote-release.yml

@@ -0,0 +1,110 @@
+name: Promote release
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: GitHub release tag (v1.2.3)
+        required: true
+        type: string
+      dry_run:
+        description: Print formula changes without opening a tap PR
+        required: false
+        type: boolean
+        default: false
+
+permissions:
+  contents: read
+
+jobs:
+  homebrew:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+      - name: Resolve tag and download macOS CLI zip
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ inputs.tag }}
+        run: |
+          set -euo pipefail
+          VERSION=$(node --input-type=module -e "import { parseTag } from './scripts/promote/homebrew.mjs'; console.log(parseTag(process.env.TAG));")
+          ASSET=$(VERSION="$VERSION" node --input-type=module -e "import { assetName } from './scripts/promote/homebrew.mjs'; console.log(assetName(process.env.VERSION));")
+          gh release view "$TAG" --json assets --jq '.assets[].name' | grep -Fx "$ASSET"
+          gh release download "$TAG" --pattern "$ASSET"
+          unzip -Z1 "$ASSET" | grep -Fx 'bin/dw'
+          SHA=$(sha256sum "$ASSET" | awk '{print $1}')
+          {
+            echo "VERSION=$VERSION"
+            echo "ASSET=$ASSET"
+            echo "SHA=$SHA"
+          } >> "$GITHUB_ENV"
+      - name: Checkout tap
+        uses: actions/checkout@v4
+        with:
+          repository: mulesoft/homebrew-data-weave
+          token: ${{ secrets.HOMEBREW_TAP_TOKEN }}
+          path: tap
+      - name: Rewrite formula
+        id: formula
+        env:
+          TAG: ${{ inputs.tag }}
+          SHA: ${{ env.SHA }}
+        run: |
+          set -euo pipefail
+          node --input-type=module <<'EOF'
+          import { appendFileSync, readFileSync, writeFileSync } from "node:fs";
+          import {
+            alreadyPromoted,
+            parseTag,
+            releaseAssetUrl,
+            rewriteFormula,
+          } from "./scripts/promote/homebrew.mjs";
+
+          const tag = process.env.TAG;
+          const version = parseTag(tag);
+          const formulaPath = "tap/formula/dw.rb";
+          const formula = readFileSync(formulaPath, "utf8");
+
+          if (alreadyPromoted(formula, version)) {
+            console.log(`already promoted: ${version}`);
+            appendFileSync(process.env.GITHUB_OUTPUT, "skipped=true\n");
+            process.exit(0);
+          }
+
+          const next = rewriteFormula(formula, {
+            url: releaseAssetUrl("mulesoft/data-weave-cli", tag, version),
+            sha256: process.env.SHA,
+            version,
+          });
+          writeFileSync(formulaPath, next);
+          console.log(next);
+          appendFileSync(process.env.GITHUB_OUTPUT, "skipped=false\n");
+          EOF
+      - name: Open tap pull request
+        if: steps.formula.outputs.skipped == 'false' && inputs.dry_run == false
+        env:
+          GH_TOKEN: ${{ secrets.HOMEBREW_TAP_TOKEN }}
+          TAG: ${{ inputs.tag }}
+          VERSION: ${{ env.VERSION }}
+          ASSET: ${{ env.ASSET }}
+          SHA: ${{ env.SHA }}
+        working-directory: tap
+        run: |
+          set -euo pipefail
+          BRANCH="promote-dw-${VERSION}"
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git checkout -B "$BRANCH"
+          git add formula/dw.rb
+          git commit -m "chore: promote dw ${VERSION}"
+          git push -u origin "$BRANCH" --force
+          if gh pr list --repo mulesoft/homebrew-data-weave --head "$BRANCH" --json number --jq '.[0].number' | grep -q .; then
+            echo "PR already open"
+          else
+            gh pr create --repo mulesoft/homebrew-data-weave --base master --head "$BRANCH" \
+              --title "Promote dw ${VERSION}" \
+              --body "From ${TAG} asset ${ASSET} sha256 ${SHA}"
+          fi

scripts/promote/homebrew.mjs

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+export function parseTag(tag) {
+  if (!/^v[0-9]/.test(tag)) {
+    throw new Error(`Expected a version tag beginning with v and a digit: ${tag}`);
+  }
+
+  return tag.slice(1);
+}
+
+export function assetName(version) {
+  return `dw-cli-${version}-macos-arm64.zip`;
+}
+
+export function releaseAssetUrl(repo, tag, version) {
+  return `https://github.com/${repo}/releases/download/${tag}/${assetName(version)}`;
+}
+
+export function parseFormulaVersion(formula) {
+  return formula.match(/^\s*version "([^"]+)"/m)?.[1];
+}
+
+export function rewriteFormula(formula, { url, sha256, version, homepage }) {
+  let rewritten = formula
+    .replace(/^(\s*url) "[^"]+"/m, `$1 "${url}"`)
+    .replace(/^(\s*sha256) "[^"]+"/m, `$1 "${sha256}"`)
+    .replace(/^(\s*version) "[^"]+"/m, `$1 "${version}"`);
+
+  if (rewritten.match(/^\s*homepage "[^"]*mulesoft-labs\/data-weave-cli[^"]*"/m)) {
+    rewritten = rewritten.replace(
+      /^(\s*homepage) "[^"]+"/m,
+      `$1 "${homepage ?? "https://github.com/mulesoft/data-weave-cli"}"`,
+    );
+  }
+
+  return rewritten;
+}
+
+export function alreadyPromoted(formula, version) {
+  return parseFormulaVersion(formula) === version;
+}