angular-cn/dev-infra/pr/check-target-branches/check-target-branches.ts

60 lines
2.2 KiB
TypeScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {getConfig} from '../../utils/config';
import {error, info, red} from '../../utils/console';
import {GitClient} from '../../utils/git/index';
import {loadAndValidateConfig, TargetLabel} from '../merge/config';
import {getBranchesFromTargetLabel, getTargetLabelFromPullRequest, InvalidTargetLabelError} from '../merge/target-label';
export async function getTargetBranchesForPr(prNumber: number) {
/** The ng-dev configuration. */
const config = getConfig();
/** Repo owner and name for the github repository. */
const {owner, name: repo} = config.github;
/** The git client to get a Github API service instance. */
const git = new GitClient(undefined, config);
/** The validated merge config. */
const {config: mergeConfig, errors} = await loadAndValidateConfig(config, git.github);
if (errors !== undefined) {
throw Error(`Invalid configuration found: ${errors}`);
}
/** The current state of the pull request from Github. */
const prData = (await git.github.pulls.get({owner, repo, pull_number: prNumber})).data;
/** The list of labels on the PR as strings. */
const labels = prData.labels.map(l => l.name);
/** The branch targetted via the Github UI. */
const githubTargetBranch = prData.base.ref;
/** The active label which is being used for targetting the PR. */
let targetLabel: TargetLabel;
try {
targetLabel = getTargetLabelFromPullRequest(mergeConfig!, labels);
} catch (e) {
if (e instanceof InvalidTargetLabelError) {
error(red(e.failureMessage));
process.exitCode = 1;
return;
}
throw e;
}
/** The target branches based on the target label and branch targetted in the Github UI. */
return await getBranchesFromTargetLabel(targetLabel, githubTargetBranch);
}
export async function printTargetBranchesForPr(prNumber: number) {
const targets = await getTargetBranchesForPr(prNumber);
if (targets === undefined) {
return;
}
info.group(`PR #${prNumber} will merge into:`);
targets.forEach(target => info(`- ${target}`));
info.groupEnd();
}