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/// @ts-check
// TODO: should this be combined with the branch checks in prepare.js?
// They do seem quite similar, but this needs to run after eval,
// and prepare.js obviously doesn't.
const { classify, split } = require('../supportedBranches.js')
const { readFile } = require('node:fs/promises')
const { postReview, dismissReviews } = require('./reviews.js')
const reviewKey = 'check-target-branch'
/**
* @param {{
* github: InstanceType<import('@actions/github/lib/utils').GitHub>,
* context: import('@actions/github/lib/context').Context
* core: import('@actions/core')
* dry: boolean
* }} CheckTargetBranchProps
*/
async function checkTargetBranch({ github, context, core, dry }) {
/**
* @type {{
* attrdiff: {
* added: string[],
* changed: string[],
* removed: string[],
* },
* attrdiffByKernel: Record<string, {
* added: string[],
* changed: string[],
* removed: string[],
* }>,
* attrdiffByPlatform: Record<string, {
* added: string[],
* changed: string[],
* removed: string[],
* }>,
* labels: Record<string, boolean>,
* rebuildCountByKernel: Record<string, number>,
* rebuildsByKernel: Record<string, string[]>,
* rebuildsByPlatform: Record<string, string[]>,
* }}
*/
const changed = JSON.parse(
await readFile('comparison/changed-paths.json', 'utf-8'),
)
const pull_number = context.payload.pull_request?.number
if (!pull_number) {
core.warning(
'Skipping checkTargetBranch: no pull_request number (is this being run as part of a merge group?)',
)
return
}
const prInfo = (
await github.rest.pulls.get({
...context.repo,
pull_number,
})
).data
const base = prInfo.base.ref
const head = prInfo.head.ref
const baseClassification = classify(base)
const headClassification = classify(head)
// Don't run on, e.g., staging-nixos to master merges.
if (headClassification.type.includes('development')) {
core.info(
`Skipping checkTargetBranch: PR is from a development branch (${head})`,
)
await dismissReviews({
github,
context,
core,
dry,
reviewKey,
})
return
}
// Don't run on PRs against staging branches, wip branches, haskell-updates, etc.
if (!baseClassification.type.includes('primary')) {
core.info(
`Skipping checkTargetBranch: PR is against a non-primary base branch (${base})`,
)
await dismissReviews({
github,
context,
core,
dry,
reviewKey,
})
return
}
const maxRebuildCount = Math.max(
...Object.values(changed.rebuildCountByKernel),
)
const rebuildsAllTests =
changed.attrdiff.changed.includes('nixosTests.simple')
// https://github.com/NixOS/nixpkgs/pull/481205#issuecomment-3790123921
// These should go to staging-nixos instead of master,
// but release-xx.xx (not staging-xx.xx) when backported
let isExemptKernelUpdate = false
if (prInfo.changed_files === 1) {
const changedFiles = (
await github.rest.pulls.listFiles({
...context.repo,
pull_number,
})
).data
isExemptKernelUpdate =
changedFiles.length === 1 &&
(changedFiles[0].filename ===
'pkgs/os-specific/linux/kernel/xanmod-kernels.nix' ||
(base.startsWith('release-') &&
changedFiles[0].filename ===
'pkgs/os-specific/linux/kernel/kernels-org.json'))
}
// https://github.com/NixOS/nixpkgs/pull/483194#issuecomment-3793393218
const isExemptHomeAssistantUpdate =
maxRebuildCount <= 1500 && head === 'wip-home-assistant'
core.info(
[
`checkTargetBranch: this PR:`,
` * causes ${maxRebuildCount} rebuilds`,
` * ${rebuildsAllTests ? 'rebuilds' : 'does not rebuild'} all NixOS tests`,
` * ${isExemptKernelUpdate ? 'is' : 'is not'} an exempt kernel update`,
` * ${isExemptHomeAssistantUpdate ? 'is' : 'is not'} an exempt home-assistant update`,
].join('\n'),
)
if (
maxRebuildCount >= 1000 &&
!isExemptHomeAssistantUpdate &&
!isExemptKernelUpdate
) {
const desiredBranch =
base === 'master' ? 'staging' : `staging-${split(base).version}`
const body = [
`The PR's base branch is set to \`${base}\`, but this PR causes ${maxRebuildCount} rebuilds.`,
'It is therefore considered a mass rebuild.',
`Please [change the base branch](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-base-branch-of-a-pull-request) to [the right base branch for your changes](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#branch-conventions) (probably \`${desiredBranch}\`).`,
].join('\n')
await postReview({
github,
context,
core,
dry,
body,
event: 'REQUEST_CHANGES',
reviewKey,
})
} else if (rebuildsAllTests && !isExemptKernelUpdate) {
let branchText
if (base === 'master' && maxRebuildCount >= 500) {
branchText = '(probably either `staging-nixos` or `staging`)'
} else if (base === 'master') {
branchText = '(probably `staging-nixos`)'
} else {
branchText = `(probably \`staging-${split(base).version}\`)`
}
const body = [
`The PR's base branch is set to \`${base}\`, but this PR rebuilds all NixOS tests.`,
base === 'master' && maxRebuildCount >= 500
? `Since this PR also causes ${maxRebuildCount} rebuilds, it may also be considered a mass rebuild.`
: '',
`Please [change the base branch](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-base-branch-of-a-pull-request) to [the right base branch for your changes](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#branch-conventions) ${branchText}.`,
].join('\n')
await postReview({
github,
context,
core,
dry,
body,
event: 'REQUEST_CHANGES',
reviewKey,
})
} else if (
maxRebuildCount >= 500 &&
!isExemptKernelUpdate &&
!isExemptHomeAssistantUpdate
) {
const stagingBranch =
base === 'master' ? 'staging' : `staging-${split(base).version}`
const body = [
`The PR's base branch is set to \`${base}\`, and this PR causes ${maxRebuildCount} rebuilds.`,
`Please consider whether this PR causes a mass rebuild according to [our conventions](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#branch-conventions).`,
`If it does cause a mass rebuild, please [change the base branch](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-base-branch-of-a-pull-request) to [the right base branch for your changes](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#branch-conventions) (probably \`${stagingBranch}\`).`,
`If it does not cause a mass rebuild, this message can be ignored.`,
].join('\n')
await postReview({
github,
context,
core,
dry,
body,
event: 'REQUEST_CHANGES',
reviewKey,
})
} else {
core.info('checkTargetBranch: this PR is against an appropriate branch.')
await dismissReviews({
github,
context,
core,
dry,
reviewKey,
})
}
}
module.exports = checkTargetBranch
|
