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github-release.ts
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github-release.ts
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/**
* Copyright 2019 Google LLC. All Rights Reserved.
*
* 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 {IssuesListResponseItem, PullsCreateResponse, PullsListResponseItem, ReposListTagsResponseItem, Response} from '@octokit/rest';
import chalk from 'chalk';
import {checkpoint, CheckpointType} from './checkpoint';
import {GitHub, GitHubReleasePR} from './github';
const parseGithubRepoUrl = require('parse-github-repo-url');
export interface GitHubReleaseOptions {
label: string;
repoUrl: string;
token: string;
}
export class GitHubRelease {
changelogPath: string;
gh: GitHub;
labels: string[];
repoUrl: string;
token: string|undefined;
constructor(options: GitHubReleaseOptions) {
this.labels = options.label.split(',');
this.repoUrl = options.repoUrl;
this.token = options.token;
this.changelogPath = 'CHANGELOG.md';
this.gh = this.gitHubInstance();
}
async createRelease() {
const gitHubReleasePR: GitHubReleasePR|undefined =
await this.gh.findMergedReleasePR(this.labels);
if (gitHubReleasePR) {
checkpoint(
`found release branch ${chalk.green(gitHubReleasePR.version)} at ${
chalk.green(gitHubReleasePR.sha)}`,
CheckpointType.Success);
const changelogContents =
await this.gh.getFileContents(this.changelogPath);
const latestReleaseNotes = GitHubRelease.extractLatestReleaseNotes(
changelogContents, gitHubReleasePR.version);
checkpoint(
`found release notes: \n---\n${
chalk.grey(latestReleaseNotes)}\n---\n`,
CheckpointType.Success);
await this.gh.createRelease(
gitHubReleasePR.version, gitHubReleasePR.sha, latestReleaseNotes);
await this.gh.removeLabels(this.labels, gitHubReleasePR.number);
} else {
checkpoint('no recent release PRs found', CheckpointType.Failure);
}
}
private gitHubInstance(): GitHub {
const [owner, repo] = parseGithubRepoUrl(this.repoUrl);
return new GitHub({token: this.token, owner, repo});
}
static extractLatestReleaseNotes(changelogContents: string, version: string):
string {
version = version.replace(/^v/, '');
const latestRe = new RegExp(
`## v?\\[?${
version}[^\\n]*\\n(.*?)(\\n##\\s|\\n### \\[?[0-9]+\\.|($(?![\r\n])))`,
'ms');
const match = changelogContents.match(latestRe);
if (!match) {
throw Error('could not find changelog entry corresponding to release PR');
}
return match[1];
}
}