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chore(ci): add workflow generating changelog for renovate bot PRs
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name: Sync Renovate changeset | ||
on: | ||
pull_request_target: | ||
paths: | ||
- '.github/workflows/sync_renovate-changesets.yml' | ||
- '**/yarn.lock' | ||
|
||
jobs: | ||
generate-changeset: | ||
runs-on: ubuntu-latest | ||
if: github.actor == 'renovate[bot]' && github.repository == 'kadel/backstage-showcase' | ||
steps: | ||
# - name: Generate token | ||
# if: steps.command.outputs.command-name | ||
# id: generate_token | ||
# uses: tibdex/github-app-token@0d49dd721133f900ebd5e0dff2810704e8defbc6 # v1 | ||
# with: | ||
# app_id: ${{ vars.JANUS_IDP_GITHUB_APP_ID }} | ||
# private_key: ${{ secrets.JANUS_IDP_GITHUB_APP_PRIVATE_KEY }} | ||
- name: Checkout | ||
uses: actions/checkout@v3 | ||
with: | ||
fetch-depth: 2 | ||
ref: ${{ github.head_ref }} | ||
#token: ${{ steps.generate_token.outputs.token }} | ||
- name: Configure Git | ||
run: | | ||
git config --global user.email 139477802+janus-idp[bot]@users.noreply.github.com | ||
git config --global user.name 'Janus IDP' | ||
- name: Generate changeset | ||
uses: actions/github-script@v6 | ||
with: | ||
script: | | ||
const { promises: fs } = require("fs"); | ||
// Parses package.json files and returns the package names | ||
async function getPackagesNames(files) { | ||
const names = []; | ||
for (const file of files) { | ||
const data = JSON.parse(await fs.readFile(file, "utf8")); | ||
if (!data.private) { | ||
names.push(data.name); | ||
} | ||
} | ||
return names; | ||
} | ||
async function createChangeset(fileName, packageBumps, packages) { | ||
let message = ""; | ||
for (const [pkg, bump] of packageBumps) { | ||
message = message + `Updated dependency \`${pkg}\` to \`${bump}\`.\n`; | ||
} | ||
const pkgs = packages.map((pkg) => `'${pkg}': patch`).join("\n"); | ||
const body = `---\n${pkgs}\n---\n\n${message.trim()}\n`; | ||
await fs.writeFile(fileName, body); | ||
} | ||
async function getBumps(files) { | ||
const bumps = new Map(); | ||
for (const file of files) { | ||
const { stdout: changes } = await exec.getExecOutput("git", [ | ||
"show", | ||
file, | ||
]); | ||
for (const change of changes.split("\n")) { | ||
if (!change.startsWith("+ ")) { | ||
continue; | ||
} | ||
const match = change.match(/"(.*?)"/g); | ||
bumps.set(match[0].replace(/"/g, ""), match[1].replace(/"/g, "")); | ||
} | ||
} | ||
return bumps; | ||
} | ||
const branch = await exec.getExecOutput("git branch --show-current"); | ||
if (!branch.stdout.startsWith("renovate/")) { | ||
console.log("Not a renovate branch, skipping"); | ||
return; | ||
} | ||
const diffOutput = await exec.getExecOutput("git diff --name-only HEAD~1"); | ||
const diffFiles = diffOutput.stdout.split("\n"); | ||
if (diffFiles.find((f) => f.startsWith(".changeset"))) { | ||
console.log("Changeset already exists, skipping"); | ||
return; | ||
} | ||
const files = diffFiles | ||
.filter((file) => file !== "package.json") // skip root package.json | ||
.filter((file) => file.includes("package.json")); | ||
const packageNames = await getPackagesNames(files); | ||
if (!packageNames.length) { | ||
console.log("No package.json changes to published packages, skipping"); | ||
return; | ||
} | ||
const { stdout: shortHash } = await exec.getExecOutput( | ||
"git rev-parse --short HEAD" | ||
); | ||
const fileName = `.changeset/renovate-${shortHash.trim()}.md`; | ||
const packageBumps = await getBumps(files); | ||
await createChangeset(fileName, packageBumps, packageNames); | ||
await exec.exec("git", ["add", fileName]); | ||
await exec.exec("git commit -C HEAD --amend --no-edit"); | ||
await exec.exec("git push --force"); |