mirror of
https://github.com/VibedByKaKi/t3-code-android-nightly.git
synced 2026-11-02 01:54:38 +01:00
299 lines
11 KiB
TypeScript
299 lines
11 KiB
TypeScript
import * as Fly from "@/Fly";
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import { HttpServer, NodeHttpServer } from "@/Http";
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import { ServerHost } from "@/Server/Process";
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import * as Redis from "@/Redis";
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import * as Config from "effect/Config";
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import * as ConfigProvider from "effect/ConfigProvider";
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import * as Deferred from "effect/Deferred";
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import * as Effect from "effect/Effect";
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import * as Fiber from "effect/Fiber";
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import * as Redacted from "effect/Redacted";
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import * as Scope from "effect/Scope";
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import * as Stream from "effect/Stream";
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import { HttpServerRequest } from "effect/http/HttpServerRequest";
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import * as HttpServerResponse from "effect/http/HttpServerResponse";
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import {
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Cache,
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WorkerSite,
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scripts,
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services,
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type Job,
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} from "./bluegreen-worker-shared.ts";
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export class Worker extends Fly.Service<Worker>()("Worker") {}
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export interface WorkerOptions {
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version: string;
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timeout: "10 seconds" | "30 seconds" | "60 seconds";
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signal: "SIGTERM" | "SIGINT";
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runOnly?: boolean;
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mode?: string;
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afterSignalMs?: number;
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workers?: number;
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}
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export const workerLayer = (options: WorkerOptions) =>
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Worker.make(
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{
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app: WorkerSite,
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main: import.meta.url,
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region: "iad",
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port: 3000,
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guest: { cpuKind: "shared", cpus: 1, memoryMb: 256 },
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env: {
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VERSION: options.version,
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MODE: options.mode ?? "drain",
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AFTER_SIGNAL_MS: String(options.afterSignalMs ?? 1000),
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WORKERS: String(options.workers ?? 1),
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RUN_ONLY: options.runOnly ? "1" : "0",
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},
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deploy: { strategy: "bluegreen", healthTimeout: "45 seconds" },
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shutdown: { signal: options.signal, timeout: options.timeout },
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services: options.runOnly ? [] : services,
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checks: options.runOnly
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? {
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ready: {
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type: "http",
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port: 3000,
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path: "/health",
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interval: "2s",
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timeout: "1s",
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},
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}
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: undefined,
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},
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Effect.gen(function* () {
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yield* Fly.ReadWriteRedis(Cache);
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const cache = yield* Cache;
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const boundUrl = yield* cache.url;
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const stopping = yield* Deferred.make<void>();
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const { count, runOnly } = globalThis.__ALCHEMY_RUNTIME__
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? yield* Effect.all({
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count: Config.Number("WORKERS"),
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runOnly: Config.String("RUN_ONLY").pipe(
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Effect.map((value) => value === "1"),
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),
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}).pipe(
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// These controls are plain Machine env, not packed runtime bindings.
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Effect.provideService(
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ConfigProvider.ConfigProvider,
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ConfigProvider.fromEnv(),
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),
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Effect.orDie,
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)
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: { count: options.workers ?? 1, runOnly: options.runOnly ?? false };
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const ready = new Set<string>();
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let sharedOpen = true;
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const url = Effect.gen(function* () {
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const value = yield* boundUrl;
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if (!value) return yield* Effect.die(new Error("Redis URL missing"));
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return Redacted.value(value);
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});
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const identify = Effect.gen(function* () {
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return {
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machine: yield* Config.String("FLY_MACHINE_ID"),
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version: yield* Config.String("VERSION"),
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};
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}).pipe(Effect.orDie);
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const connect = url.pipe(
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Effect.flatMap(Redis.connect),
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Effect.timeout("5 seconds"),
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Effect.orDie,
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);
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const event = (
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client: Redis.Connection,
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name: string,
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fields: Record<string, unknown> = {},
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) =>
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identify.pipe(
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Effect.flatMap((identity) =>
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client.send("EVAL", [
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scripts.event,
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0,
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JSON.stringify({ ...identity, event: name, ...fields }),
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]),
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),
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Effect.timeout("5 seconds"),
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Effect.orDie,
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);
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if (globalThis.__ALCHEMY_RUNTIME__) {
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yield* Effect.addFinalizer(() =>
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Effect.gen(function* () {
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const client = yield* connect;
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yield* event(client, "shared-closed");
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sharedOpen = false;
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}).pipe(Effect.scoped),
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);
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}
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const runWorker = (name: string) =>
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Effect.gen(function* () {
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const client = yield* connect;
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const identity = yield* identify;
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const mode =
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name === "a"
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? yield* Config.String("MODE").pipe(Effect.orDie)
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: "drain";
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const delay = yield* Config.Number("AFTER_SIGNAL_MS").pipe(
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Effect.orDie,
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);
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const call = (operation: keyof typeof scripts, args: string[]) =>
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client
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.send("EVAL", [scripts[operation], 0, ...args])
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.pipe(Effect.timeout("5 seconds"), Effect.orDie);
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yield* Effect.addFinalizer(() =>
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event(client, "client-released", { worker: name }),
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);
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const workScope = yield* Scope.make();
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yield* Effect.addFinalizer((exit) =>
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Scope.close(workScope, exit).pipe(
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Effect.andThen(event(client, "work-closed", { worker: name })),
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),
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);
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const pollScope = yield* Scope.make();
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yield* Effect.addFinalizer((exit) => Scope.close(pollScope, exit));
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const jobs: Fiber.Fiber<void, never>[] = [];
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let accepting = true;
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const poll = Effect.gen(function* () {
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if (!accepting) return;
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if (name === "a")
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yield* call("tick", [identity.machine, identity.version]);
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const response = yield* call("claim", [
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identity.machine,
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identity.version,
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]);
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if (typeof response !== "string") return;
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const job = JSON.parse(response) as Job;
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const task = Effect.gen(function* () {
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let finished = false;
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yield* Effect.addFinalizer(() =>
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finished
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? Effect.void
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: call("checkpoint", [
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job.id,
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job.job,
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identity.machine,
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]).pipe(Effect.asVoid),
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);
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if (!job.checkpoint && job.kind !== "quick") {
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yield* Deferred.await(stopping);
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if (job.kind === "checkpoint" || mode === "job-hang")
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yield* Effect.never;
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yield* Effect.sleep(delay);
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} else yield* Effect.sleep("100 millis");
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if (!sharedOpen)
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return yield* Effect.die(
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new Error("shared dependency closed before job"),
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);
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yield* call("finish", [job.id, job.job, identity.machine]).pipe(
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Effect.tap(() =>
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Effect.sync(() => {
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finished = true;
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}),
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),
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Effect.uninterruptible,
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);
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}).pipe(
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Effect.scoped,
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Effect.interruptible,
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Effect.forkIn(workScope),
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);
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jobs.push(yield* task);
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}).pipe(Effect.uninterruptible);
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const poller = yield* poll.pipe(
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Effect.andThen(Effect.sleep("250 millis")),
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Effect.forever,
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Effect.forkIn(pollScope),
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);
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yield* Effect.addFinalizer(() =>
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Effect.gen(function* () {
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yield* event(client, "stop-started", { worker: name });
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yield* Deferred.succeed(stopping, undefined);
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if (mode === "stop-hang") yield* Effect.never;
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if (mode === "stop-delay") yield* Effect.sleep("1 second");
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accepting = false;
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yield* Fiber.interrupt(poller);
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if (mode === "stop-fail") {
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yield* event(client, "stop-failed", { worker: name });
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yield* Scope.close(workScope, yield* Effect.exit(Effect.void));
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return yield* Effect.die(new Error("application stop failure"));
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}
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yield* event(client, "stopped", { worker: name });
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if (mode === "checkpoint")
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yield* Scope.close(workScope, yield* Effect.exit(Effect.void));
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yield* Effect.forEach(jobs, Fiber.await, {
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concurrency: "unbounded",
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});
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yield* event(client, "drained", { worker: name });
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}),
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);
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yield* event(client, "worker-ready", { worker: name });
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ready.add(name);
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yield* Effect.never;
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}).pipe(Effect.scoped);
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const fetch = Effect.gen(function* () {
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const request = yield* HttpServerRequest;
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if (request.url === "/health") {
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return HttpServerResponse.text(
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ready.size === count ? "ready" : "starting",
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{
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status: ready.size === count ? 200 : 503,
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},
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);
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}
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const client = yield* connect;
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const identity = yield* identify;
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if (request.url === "/")
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return yield* HttpServerResponse.json(identity);
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yield* event(client, "request-started");
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yield* Effect.addFinalizer(() => event(client, "request-finalized"));
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const delay = yield* Config.Number("AFTER_SIGNAL_MS").pipe(
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Effect.orDie,
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);
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const afterStop = Deferred.await(stopping).pipe(
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Effect.andThen(Effect.sleep(delay)),
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Effect.andThen(
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Effect.sync(() => {
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if (!sharedOpen)
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throw new Error("shared dependency closed before response");
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}),
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),
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Effect.andThen(event(client, "response-finished")),
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);
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if (request.url === "/stream")
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return HttpServerResponse.stream(
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Stream.make("first\n".repeat(32768)).pipe(
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Stream.concat(
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Stream.fromEffect(
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afterStop.pipe(Effect.as("last\n".repeat(32768))),
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),
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),
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Stream.mapEffect((chunk) =>
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Effect.sync(() => new TextEncoder().encode(chunk)),
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),
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),
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);
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yield* afterStop;
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return yield* HttpServerResponse.json(identity);
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});
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const host = yield* ServerHost;
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if (count > 1) yield* host.run(runWorker("b"));
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if (runOnly) {
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yield* host.run(
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Effect.gen(function* () {
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const server = yield* HttpServer;
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yield* server.serve(fetch);
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yield* Effect.never;
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}).pipe(
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Effect.provide(NodeHttpServer({ hostname: "::" })),
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Effect.scoped,
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),
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);
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}
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const run = runWorker("a");
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return runOnly ? { run } : { run, fetch };
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}).pipe(Effect.provide(Fly.ReadWriteRedisHttp)),
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);
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export default workerLayer({
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version: "default",
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timeout: "30 seconds",
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signal: "SIGTERM",
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});
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