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const express = require('express');
const {
buildUnreleasedCommitsMessage,
fetchUnreleasedCommits,
} = require('./utils/unreleased-commits');
const {
buildUnmergedPRsMessage,
fetchUnmergedPRs,
} = require('./utils/unmerged-prs');
const {
buildNeedsManualPRsMessage,
fetchNeedsManualPRs,
} = require('./utils/needs-manual-prs');
const {
fetchInitiator,
getReleaseBranches,
getSemverForCommitRange,
getSupportedBranches,
isInvalidBranch,
postToSlack,
SEMVER_TYPE,
timingSafeEqual,
verifySlackRequest,
} = require('./utils/helpers');
const { getOctokit } = require('./utils/octokit');
const app = express();
// Capture the raw request body as a Buffer so Slack slash-command signatures can
// be verified against exactly the bytes Slack signed. See verifySlackRequest.
function rawBodySaver(req, res, buf) {
req.rawBody = buf;
}
app.use(express.urlencoded({ extended: true, verify: rawBodySaver }));
app.use(express.json({ verify: rawBodySaver }));
app.use(express.static('public'));
app.get('/verify-semver', async (req, res) => {
if (
!timingSafeEqual(
req.headers.authorization,
process.env.VERIFY_SEMVER_AUTH_HEADER,
)
) {
return res.status(401).end();
}
const { branch } = req.query;
const branches = await getReleaseBranches();
if (isInvalidBranch(branches, branch)) {
res.status(400).json({ error: `${branch} is not a valid branch` });
return;
}
try {
const { commits, lastTag } = await fetchUnreleasedCommits(branch);
console.info(`Found ${commits.length} commits unreleased on ${branch}`);
const semverType = lastTag?.prerelease
? SEMVER_TYPE.PATCH
: await getSemverForCommitRange(commits, branch);
console.info(`Determined that next release on ${branch} is ${semverType}`);
return res.json({ semverType });
} catch (err) {
console.error(err);
res.status(500).json({
error: true,
});
}
});
app.post('/verify-semver', verifySlackRequest, async (req, res) => {
res.status(200).end();
const branches = await getReleaseBranches();
const branch = req.body.text;
const initiator = await fetchInitiator(req);
console.log(
`${initiator.name} initiated release semver verification for branch: ${branch}`,
);
if (isInvalidBranch(branches, branch)) {
console.error(`${branch} is not a valid branch`);
await postToSlack(
{
response_type: 'ephemeral',
text: `Invalid branch *${branch}*. Try again?`,
},
req.body.response_url,
);
return;
}
try {
const { commits, lastTag } = await fetchUnreleasedCommits(branch);
console.info(`Found ${commits.length} commits unreleased on ${branch}`);
const semverType = lastTag?.prerelease
? SEMVER_TYPE.PATCH
: await getSemverForCommitRange(commits, branch);
console.info(`Determined that next release on ${branch} is ${semverType}`);
await postToSlack(
{
response_type: 'in_channel',
text: `Next release type for \`${branch}\` is: *${semverType}*`,
},
req.body.response_url,
);
} catch (err) {
console.error(err);
await postToSlack(
{
response_type: 'ephemeral',
text: `Error: ${err.message}`,
},
req.body.response_url,
);
}
});
// Check for pull requests targeting a specified release branch
// that have not yet been merged.
app.post('/unmerged', verifySlackRequest, async (req, res) => {
const branch = req.body.text;
const initiator = await fetchInitiator(req);
console.log(
`${initiator.name} initiated unmerged audit for branch: ${branch}`,
);
if (branch !== 'all' && isInvalidBranch(await getReleaseBranches(), branch)) {
console.error(`${branch} is not a valid branch`);
await postToSlack(
{
response_type: 'ephemeral',
text: `Invalid branch *${branch}*. Try again?`,
},
req.body.response_url,
);
return res.status(200).end();
}
console.log(`Auditing unmerged PRs on branch: ${branch}`);
try {
const branchesToCheck =
branch === 'all' ? await getSupportedBranches() : [branch];
let messages = [];
for (const branch of branchesToCheck) {
const prs = await fetchUnmergedPRs(branch);
console.log(`Found ${prs.length} unmerged PR(s) targeting ${branch}`);
let message;
if (!prs || prs.length === 0) {
message = `*No PR(s) pending merge to ${branch}*`;
} else {
message = `Unmerged pull requests targeting *${branch}* (from <@${initiator.id}>):\n`;
message += buildUnmergedPRsMessage(branch, prs);
}
messages.push(message);
}
await postToSlack(
{
response_type: 'in_channel',
text: messages.join('\n'),
},
req.body.response_url,
);
} catch (err) {
console.error(err);
await postToSlack(
{
response_type: 'ephemeral',
text: `Error: ${err.message}`,
},
req.body.response_url,
);
}
return res.status(200).end();
});
// Check for pull requests which have been merged to main and labeled
// with target/BRANCH_NAME that trop failed for and which still need manual backports.
app.post('/needs-manual', verifySlackRequest, async (req, res) => {
const REMIND = 'remind';
let [branch, author, remind] = req.body.text.split(' ');
let shouldRemind = false;
if (author === REMIND && remind === undefined) {
shouldRemind = true;
author = null;
} else if (remind === REMIND) {
shouldRemind = true;
}
const initiator = await fetchInitiator(req);
console.log(
`${initiator.name} initiated needs-manual audit for branch: ${branch}`,
);
if (branch !== 'all' && isInvalidBranch(await getReleaseBranches(), branch)) {
console.error(`${branch} is not a valid branch`);
await postToSlack(
{
response_type: 'ephemeral',
text: `Invalid branch *${branch}*. Try again?`,
},
req.body.response_url,
);
return res.status(200).end();
}
if (author) {
try {
const octokit = await getOctokit();
await octokit.users.getByUsername({ username: author });
} catch {
console.error(`${author} is not a valid GitHub user`);
await postToSlack(
{
response_type: 'ephemeral',
text: `GitHub user *${author}* does not exist. Try again?`,
},
req.body.response_url,
);
return res.status(200).end();
}
console.log(`Scoping needs-manual PRs to those opened by ${author}`);
}
try {
const branchesToCheck =
branch === 'all' ? await getSupportedBranches() : [branch];
let messages = [];
for (const branch of branchesToCheck) {
const prs = await fetchNeedsManualPRs(branch, author);
console.log(`Found ${prs.length} prs on ${branch}`);
let message;
if (!prs || prs.length === 0) {
message = `*No PR(s) needing manual backport to ${branch}*`;
} else {
message = `PR(s) needing manual backport to *${branch}* (from <@${initiator.id}>):\n`;
message += buildNeedsManualPRsMessage(branch, prs, shouldRemind);
}
messages.push(message);
}
// If someone is running an audit on the needs-manual PRs that only
// they are responsible for, make the response ephemeral.
const responseType = initiator.name === author ? 'ephemeral' : 'in_channel';
await postToSlack(
{
response_type: responseType,
text: messages.join('\n'),
},
req.body.response_url,
);
} catch (err) {
console.error(err);
await postToSlack(
{
response_type: 'ephemeral',
text: `Error: ${err.message}`,
},
req.body.response_url,
);
}
return res.status(200).end();
});
app.get('/unreleased', async (req, res) => {
if (
!timingSafeEqual(
req.headers.authorization,
process.env.VERIFY_SEMVER_AUTH_HEADER,
)
) {
return res.status(401).end('Unauthorized');
}
const { branch } = req.query;
try {
const result = {};
if (branch === 'all') {
const branches = await getSupportedBranches();
for (const b of branches) {
const { commits } = await fetchUnreleasedCommits(b);
result[b] = commits;
}
} else {
const branches = await getReleaseBranches();
if (isInvalidBranch(branches, branch)) {
return res
.status(400)
.json({ error: `${branch} is not a valid branch` });
}
const { commits } = await fetchUnreleasedCommits(branch);
result[branch] = commits;
}
return res.json(result);
} catch {
return res
.status(500)
.json({ error: `Failed to fetch unreleased for ${branch}` });
}
});
// Check for commits which have been merged to a release branch but
// not been released in a beta or stable.
app.post('/unreleased', verifySlackRequest, async (req, res) => {
const branch = req.body.text;
const initiator = await fetchInitiator(req);
// Allow for manual batch audit of all supported release branches.
if (branch === 'all') {
const branches = await getSupportedBranches();
console.log(
`${initiator.name} triggered audit for all supported release branches`,
);
for (const b of branches) {
console.log(`Auditing branch ${b}`);
try {
const { commits } = await fetchUnreleasedCommits(b);
console.log(`Found ${commits.length} commits on ${b}`);
await postToSlack(
{
response_type: 'in_channel',
text: buildUnreleasedCommitsMessage(b, commits, initiator.id),
},
req.body.response_url,
);
} catch (err) {
console.error(err);
await postToSlack(
{
response_type: 'ephemeral',
text: `Error: ${err.message}`,
},
req.body.response_url,
);
}
}
return res.status(200).end();
}
console.log(
`${initiator.name} initiated unreleased commit audit for branch: ${branch}`,
);
const branches = await getReleaseBranches();
if (isInvalidBranch(branches, branch)) {
console.error(`${branch} is not a valid branch`);
await postToSlack(
{
response_type: 'ephemeral',
text: `Invalid branch *${branch}*. Try again?`,
},
req.body.response_url,
);
return res.status(200).end();
}
try {
const { commits } = await fetchUnreleasedCommits(branch);
console.log(`Found ${commits.length} commits on ${branch}`);
await postToSlack(
{
response_type: 'in_channel',
text: buildUnreleasedCommitsMessage(branch, commits, initiator.id),
},
req.body.response_url,
);
} catch (err) {
console.error(err);
await postToSlack(
{
response_type: 'ephemeral',
text: `Error: ${err.message}`,
},
req.body.response_url,
);
}
return res.status(200).end();
});
// Combines checks for all PRs that either need manual backport to a given
// release line or which are targeting said line and haven't been merged.
app.post('/audit-pre-release', verifySlackRequest, async (req, res) => {
const branches = await getReleaseBranches();
const branch = req.body.text;
const initiator = await fetchInitiator(req);
console.log(
`${initiator.name} initiated pre-release audit for branch: ${branch}`,
);
if (isInvalidBranch(branches, branch)) {
console.error(`${branch} is not a valid branch`);
await postToSlack(
{
response_type: 'ephemeral',
text: `Invalid branch *${branch}*. Try again?`,
},
req.body.response_url,
);
return res.status(200).end();
}
try {
// In a prerelease audit, we don't want to scope by author so we pass null intentionally.
const needsManualPRs = await fetchNeedsManualPRs(branch, null);
console.log(
`Found ${needsManualPRs.length} PR(s) needing manual backport on ${branch}`,
);
const unmergedPRs = await fetchUnmergedPRs(branch);
console.log(`Found ${unmergedPRs.length} unmerged PRs targeting ${branch}`);
let message;
if (needsManualPRs.length + unmergedPRs.length === 0) {
message = `*No PR(s) unmerged or needing manual backport for ${branch}*`;
} else {
message = `Pre-release audit for *${branch}* (from <@${initiator.id}>)\n`;
if (needsManualPRs.length !== 0) {
message += `PR(s) needing manual backport to *${branch}*:\n`;
message += `${buildNeedsManualPRsMessage(branch, needsManualPRs)}\n`;
}
if (unmergedPRs.length !== 0) {
message += `Unmerged pull requests targeting *${branch}*:\n`;
message += `${buildUnmergedPRsMessage(branch, unmergedPRs)}\n`;
}
}
await postToSlack(
{
response_type: 'in_channel',
text: message,
},
req.body.response_url,
);
} catch (err) {
console.error(err);
await postToSlack(
{
response_type: 'ephemeral',
text: `Error: ${err.message}`,
},
req.body.response_url,
);
}
return res.status(200).end();
});
const listener = app.listen(process.env.PORT, () => {
console.log(`release-branch-auditor listening on ${listener.address().port}`);
});