Files
orca/config/scripts/ci-unit-plan.mjs
T
Neil 30f5bef947 fix(ci): background steps are single run steps, so no action reads the event payload while the runner rewrites it (#30795)
* fix(ci): background steps are single run steps, so no JavaScript action reads the event payload while the runner rewrites it

* test(ci): guard the background slot cap and pin the payload-free allowlist
2026-10-19 10:28:19 -07:00

71 lines
2.5 KiB
JavaScript

import { appendFileSync } from 'node:fs'
import { pathToFileURL } from 'node:url'
import { runProcessSync } from '@orca/process-host'
import { collectUnitDependencyGraph } from './ci-unit-dependency-graph.mjs'
import { discoverUnitFiles } from './ci-unit-files.mjs'
import { FULL_SHARD_COUNT, planUnitSelection } from './ci-unit-selection.mjs'
import { readTimingBaseline, writeAssignment } from './ci-shard-assignment.mjs'
export function prepareUnitPlan(env = process.env) {
const requestedCount = env.ORCA_UNIT_FULL_SHARD_COUNT ?? String(FULL_SHARD_COUNT)
if (!['5', '10'].includes(requestedCount)) {
throw new Error('ORCA_UNIT_FULL_SHARD_COUNT must be 5 or 10')
}
const fullShardCount = Number(requestedCount)
const files = discoverUnitFiles()
let plan
try {
// From the workflow, not the payload file: background steps can read it mid-rewrite.
const event = { pull_request: { draft: env.ORCA_PULL_REQUEST_DRAFT === 'true' } }
if (env.GITHUB_EVENT_NAME !== 'pull_request') {
throw new Error('Full reference run')
}
const diff = runProcessSync({
program: 'git',
args: ['diff', '--name-only', '--no-renames', '-z', 'HEAD^1', 'HEAD'],
maxOutputBytes: 16 * 1024 * 1024
})
if (diff.code !== 0 || diff.timedOut) {
throw new Error('Changed paths unavailable')
}
plan = planUnitSelection({
files,
changed: diff.stdout.split('\0').filter(Boolean),
graph: collectUnitDependencyGraph,
timings: readTimingBaseline('unit').timings,
event,
mode: env.ORCA_UNIT_SELECTION_MODE,
fullShardCount
})
} catch (error) {
plan = {
version: 1,
mode: 'shadow',
selectionAvailable: false,
reason: String(error),
files,
candidateFiles: files,
executionFiles: files,
shards: Array.from({ length: fullShardCount }, (_, index) => ({
index: index + 1,
count: fullShardCount
}))
}
}
writeAssignment('ci-shards/unit-selection.json', plan)
if (env.GITHUB_OUTPUT) {
appendFileSync(env.GITHUB_OUTPUT, `shards=${JSON.stringify(plan.shards)}\n`)
}
if (env.GITHUB_STEP_SUMMARY) {
appendFileSync(
env.GITHUB_STEP_SUMMARY,
`Unit selection: **${plan.mode}**; ${plan.candidateFiles.length}/${files.length} candidate files; ${plan.shards.length} execution shards. ${plan.reason}\n`
)
}
return plan
}
if (process.argv[1] && import.meta.url === pathToFileURL(process.argv[1]).href) {
prepareUnitPlan()
}