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feat: expose background service lifecycle (#36895)

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Kit Langton 2026-07-14 16:38:22 -04:00 • committed by GitHub
commit ece2b16cdf
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36 changed files with 2421 additions and 293 deletions
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64
packages/client/test/fixture/service.ts
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@ -1,13 +1,45 @@
import { rename, writeFile } from "node:fs/promises"
import { appendFile, rename, writeFile } from "node:fs/promises"
const [registration, mode] = process.argv.slice(2)
const [registration, mode, delay] = process.argv.slice(2)
if (registration === undefined || mode === undefined) throw new Error("Missing service fixture arguments")
if (mode === "failed") process.exit(1)
if (mode === "record-start") {
await writeFile(registration + ".started", "")
process.exit(1)
}
if (mode === "signal") process.kill(process.pid, process.platform === "win32" ? "SIGTERM" : "SIGKILL")
if (mode === "delayed" || mode === "delayed-failed" || mode === "coordinated") {
await appendFile(registration + ".starts", process.pid + "\n")
const owner = await writeFile(registration + ".owner", String(process.pid), { flag: "wx" })
.then(() => true)
.catch(() => false)
if (!owner) process.exit()
if (mode === "coordinated") {
while ((await Bun.file(registration + ".starts").text()).trim().split("\n").length < 2) await Bun.sleep(10)
} else await Bun.sleep(Number(delay))
if (mode === "delayed-failed") process.exit(1)
}
let requests = 0
const version = mode === "old" || mode === "reject-stop" ? "old" : "test"
const id = crypto.randomUUID()
const server = Bun.serve({
port: 0,
async fetch(request) {
if (new URL(request.url).pathname !== "/api/health") return new Response(null, { status: 404 })
const pathname = new URL(request.url).pathname
if (pathname === "/api/service/stop" && mode === "reject-stop") {
await writeFile(registration + ".stop-attempt", "")
return Response.json({ accepted: false })
}
if (pathname === "/api/service/stop" && mode === "graceful") {
const body = await request.json()
if (typeof body !== "object" || body === null || body.instanceID !== id) return Response.json({ accepted: false })
await writeFile(registration + ".stop", JSON.stringify(body))
setTimeout(shutdown, 25)
return Response.json({ accepted: true })
}
if (pathname !== "/api/health") return new Response(null, { status: 404 })
requests += 1
if (mode === "modern" && requests === 1) {
await writeFile(registration + ".first-request", "")
@ -15,15 +47,33 @@ const server = Bun.serve({
return new Response(null, { status: 503 })
}
if (mode === "legacy") return Response.json({ healthy: true })
return Response.json({ healthy: true, version: "test", pid: process.pid })
if (mode === "starting" && !(await Bun.file(registration + ".release").exists()))
return Response.json(
{ healthy: true, version, pid: process.pid, instanceID: id, status: { type: "starting" } },
{ status: 503 },
)
if (mode === "failed-owner")
return Response.json(
{
healthy: true,
version,
pid: process.pid,
instanceID: id,
status: { type: "failed", message: "Could not open the database.", action: "Check the service logs." },
},
{ status: 503 },
)
if (mode === "starting" || mode === "graceful" || mode === "reject-stop")
return Response.json({ healthy: true, version, pid: process.pid, instanceID: id, status: { type: "ready" } })
return Response.json({ healthy: true, version, pid: process.pid })
},
})
await writeFile(
registration + ".tmp",
JSON.stringify({
id: crypto.randomUUID(),
version: mode === "legacy" ? undefined : "test",
id,
version: mode === "legacy" ? undefined : version,
url: server.url.toString(),
pid: process.pid,
}),
@ -31,7 +81,7 @@ await writeFile(
)
await rename(registration + ".tmp", registration)
const shutdown = () => {
function shutdown() {
server.stop(true)
process.exit()
}