community-plugins/scripts/ci/generate-bump-changesets.js

129 lines
3.9 KiB
JavaScript

/*
* Copyright 2024 The Backstage Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { promisify } from 'util';
import { exec as execOriginal } from 'child_process';
import fs from 'fs/promises';
import path from 'path';
const exec = promisify(execOriginal);
async function main() {
console.log('Generating changesets for package.json dependency bumps...');
const { stdout: diffOutput } = await exec('git diff --name-only HEAD~1');
const diffFiles = diffOutput.split('\n');
if (diffFiles.find(f => path.matchesGlob(f, 'workspaces/*/.changeset/*'))) {
console.log('Changeset already exists, skipping');
return;
}
const files = diffFiles
.filter(file => file !== 'package.json') // skip root package.json
.filter(file =>
path.matchesGlob(file, 'workspaces/*/plugins/*/package.json'),
);
const workspaces = await getPackagesNamesByWorkspace(files);
if (!Object.keys(workspaces).length) {
console.log('No package.json changes found, skipping');
return;
}
const packageBumps = await getBumps(files);
if (packageBumps.size === 0) {
console.log('No bumps in published packages, skipping');
return;
}
const { stdout: shortHash } = await exec('git rev-parse --short HEAD');
for (const workspace of Object.keys(workspaces)) {
const fileName = `workspaces/${workspace}/.changeset/renovate-${shortHash.trim()}.md`;
console.log(`Creating changeset ${fileName}`);
await createChangeset(fileName, packageBumps, workspaces[workspace]);
await exec(`git add ${fileName}`);
}
await exec('git commit --amend --no-edit');
await exec('git push -f');
console.log(`Added changeset for commit ${shortHash.trim()}`);
}
// Parses package.json files and returns the package names
async function getPackagesNamesByWorkspace(files) {
const workspaces = {};
for (const file of files) {
const data = JSON.parse(await fs.readFile(file, 'utf8'));
const workspace = path
.dirname(path.resolve(file, '../..'))
.split(path.sep)
.pop();
if (!data.private) {
const names = workspaces[workspace] || [];
if (!workspaces[workspace]) {
workspaces[workspace] = names;
}
names.push(data.name);
}
}
return workspaces;
}
async function getBumps(files) {
const bumps = new Map();
for (const file of files) {
const { stdout: changes } = await exec(`git show ${file}`);
const packageDef = JSON.parse(
await fs.readFile(path.join(process.cwd(), file), 'utf8'),
);
for (const change of changes.split('\n')) {
if (!change.startsWith('+ ')) {
continue;
}
const match = change.match(/"(.*?)"/g);
const pkg = match[0].replace(/"/g, '');
const version = match[1].replace(/"/g, '');
// Only generate changesets for published packages
if (packageDef.private) {
console.log(`Ignoring bump in private package ${packageDef.name}`);
continue;
}
bumps.set(pkg, version);
}
}
return bumps;
}
async function createChangeset(fileName, packageBumps, packages) {
let message = '';
for (const [pkg, bump] of packageBumps) {
message = `${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);
}
main().catch(error => {
console.error(error.stack || error);
process.exit(1);
});