mirror of
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88 lines
3.8 KiB
JavaScript
88 lines
3.8 KiB
JavaScript
/**
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* Plain-Node CLI (no pnpm) — GitHub PR safety net: mark `cursor/*` drafts
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* ready and arm GitHub's native auto-merge (rebase). Runs in
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* .github/workflows/agent-pr-ready-automerge.yml. The auto-merge arming uses
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* the AUTOMERGE_PAT (real user PAT) — never the built-in GITHUB_TOKEN, whose
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* actor (github-actions[bot]) would merge without creating workflow runs for
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* the `closed` event (OPS71-FLIP; anti-recursion — silent broken flips).
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* Mark-ready keeps the run token (nothing consumes its event).
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*
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* Unlike the Forgejo-era automerger (removed in OPS71 Fase 2), there is NO
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* poll loop: `enablePullRequestAutoMerge` is server-side — GitHub only merges
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* when every required check (incl. `CI (PR) / checks`) is green and the PR is
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* mergeable. The OPS64 "never trust the rollup" pin is structural here: a
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* single sequential job posts one honest check-run, and the server enforces
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* it. Draft policy (OPS57) preserved: only `cursor/*` heads are marked
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* ready — any other draft is the actor's veto (skip, exit 0). OPS98: `audit/*`
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* heads are vetoed entirely (ready or draft) — the engineering-audit single PR
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* merges by human hand only.
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*
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* Idempotent: already merged / closed / non-main base → no-op success.
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* A GraphQL error (e.g. repo auto-merge disabled, PR in conflict) exits 1 so
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* the job goes red and the situation is visible.
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*
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* node scripts/github-pr-automerge.mjs --pr <N>
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*/
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import { createApi } from './lib/github-api.mjs'
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import { automergeArmingToken, decideAutomergeAction } from './lib/github-pr-flow.mjs'
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const parseArgs = (argv) => {
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const flags = {}
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for (let index = 2; index < argv.length; index += 1) {
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const arg = argv[index]
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if (arg.startsWith('--')) {
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const name = arg.slice(2)
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const next = argv[index + 1]
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flags[name] = typeof next === 'string' && !next.startsWith('--') ? next : true
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if (typeof next === 'string' && !next.startsWith('--')) index += 1
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}
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}
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return flags
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}
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const flags = parseArgs(process.argv)
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const prNumber = Number(flags.pr)
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if (!Number.isInteger(prNumber) || prNumber <= 0) {
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console.error('Usage: node scripts/github-pr-automerge.mjs --pr <N>')
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process.exit(1)
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}
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const api = createApi({})
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// OPS71-FLIP: the native auto-merge MUST be armed with a real user PAT, not
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// the built-in GITHUB_TOKEN. A merge performed through the GITHUB_TOKEN actor
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// (github-actions[bot]) never creates workflow runs for its events (GitHub
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// anti-recursion — the `pull_request` `closed` is recorded in the timeline
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// but no run is created), so the post-merge flips would silently never run
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// (live finding: PR #746). With a PAT the merge is attributed to its owner (a
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// real user) and the `closed` event creates runs again (PR #742 behavior).
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// Fail-closed: no AUTOMERGE_PAT → exit 1 — never fall back to GITHUB_TOKEN.
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const arming = automergeArmingToken(process.env)
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if (!arming.ok) {
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console.error(`[github-pr-automerge] ${arming.reason}`)
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process.exit(1)
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}
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const automergeApi = createApi({ token: arming.token })
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try {
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const pr = await api.getPullRequest(prNumber)
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const verdict = decideAutomergeAction(pr)
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if (verdict.action === 'skip') {
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console.log(`[github-pr-automerge] PR #${prNumber}: skip (${verdict.reason})`)
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process.exit(0)
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}
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if (verdict.action === 'mark-ready') {
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console.log(`[github-pr-automerge] PR #${prNumber} é draft cursor/* — marcando Ready`)
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await api.markPullRequestReady(prNumber)
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}
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console.log(`[github-pr-automerge] PR #${prNumber}: armando auto-merge (rebase)`)
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await automergeApi.enableAutoMerge(pr.nodeId)
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console.log(
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`[github-pr-automerge] PR #${prNumber}: auto-merge armado — o GitHub mergea quando o required check "CI (PR) / checks" fica verde`,
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)
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} catch (error) {
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console.error(`[github-pr-automerge] falhou: ${error instanceof Error ? error.message : error}`)
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process.exit(1)
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}
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