1458 lines
40 KiB
TypeScript
1458 lines
40 KiB
TypeScript
import { describe, expect, it, vi } from "vitest";
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import type { ClockPort } from "../../../src/application/ports/clock-port.ts";
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import type {
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RealtimeFailureKind,
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RealtimeResult,
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} from "../../../src/application/ports/realtime/shared.ts";
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import type {
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RealtimeRecoveryCheckpoint,
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} from "../../../src/application/ports/realtime/event-authority.ts";
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import {
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createRealtimeReconnectCoordinator,
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type RealtimeCommittedRecovery,
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type RealtimeReconnectAttemptContext,
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type RealtimeReconnectAttemptSuccess,
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type RealtimeReconnectEnvironment,
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type RealtimeReconnectOutcome,
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type RealtimeReconnectSession,
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type RealtimeRecoveryReconnectDirective,
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} from "../../../src/adapters/realtime/index.ts";
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import {
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defineReconnectPolicy,
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REALTIME_RECONNECT_CEILINGS,
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type ReconnectPolicy,
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} from "../../../src/adapters/realtime/reconnect-policy.ts";
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import {
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realtimeFailure,
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realtimeSuccess,
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} from "../../../src/adapters/realtime/result.ts";
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type Sleeper = Readonly<{
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dueAt: number;
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signal?: AbortSignal;
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resolve(): void;
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reject(): void;
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}>;
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class ManualClock implements ClockPort {
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current = 0;
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readonly sleepCalls: number[] = [];
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readonly sleepers: Sleeper[] = [];
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now(): number {
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return this.current;
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}
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sleep(
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milliseconds: number,
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signal?: AbortSignal,
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): Promise<void> {
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this.sleepCalls.push(milliseconds);
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return new Promise((resolve, reject) => {
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if (signal?.aborted) {
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reject(new Error("Aborted."));
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return;
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}
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let onAbort: (() => void) | undefined;
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const sleeper: Sleeper = {
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dueAt: this.current + milliseconds,
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signal,
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resolve: () => {
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signal?.removeEventListener("abort", onAbort!);
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resolve();
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},
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reject: () => {
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signal?.removeEventListener("abort", onAbort!);
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reject(new Error("Aborted."));
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},
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};
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onAbort = () => {
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this.remove(sleeper);
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sleeper.reject();
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};
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signal?.addEventListener("abort", onAbort, { once: true });
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this.sleepers.push(sleeper);
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});
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}
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advance(milliseconds: number): void {
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this.current += milliseconds;
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const ready = this.sleepers
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.filter((sleeper) => sleeper.dueAt <= this.current)
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.sort((left, right) => left.dueAt - right.dueAt);
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for (const sleeper of ready) {
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this.remove(sleeper);
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sleeper.resolve();
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}
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}
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private remove(target: Sleeper): void {
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const index = this.sleepers.indexOf(target);
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if (index >= 0) this.sleepers.splice(index, 1);
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}
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}
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class MutableOnlineEnvironment
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implements RealtimeReconnectEnvironment
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{
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readonly listeners = new Set<(online: boolean) => void>();
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constructor(public connected: boolean) {}
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online(): boolean {
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return this.connected;
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}
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subscribeOnline(
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listener: (online: boolean) => void,
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): () => void {
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this.listeners.add(listener);
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return () => this.listeners.delete(listener);
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}
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emit(online: boolean): void {
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this.connected = online;
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for (const listener of this.listeners) listener(online);
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}
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}
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function policy(
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override: Partial<ReconnectPolicy> = {},
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): ReconnectPolicy {
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return defineReconnectPolicy({
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baseDelayMs: 100,
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maxDelayMs: 1_000,
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maxAttempts: 2,
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maxElapsedMs: 5_000,
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stableOpenMs: 500,
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...override,
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});
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}
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function failed(
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result: Extract<RealtimeResult<never>, { ok: false }>,
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serverNotBeforeMs?: number,
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): RealtimeReconnectOutcome<never> {
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return Object.freeze({
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result,
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...(serverNotBeforeMs === undefined
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? {}
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: { serverNotBeforeMs }),
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});
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}
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function opened<ClosedReceipt>(
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session: RealtimeReconnectSession<ClosedReceipt>,
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establishedRecoveryBarrier?: RealtimeCommittedRecovery,
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): RealtimeReconnectOutcome<
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RealtimeReconnectAttemptSuccess<ClosedReceipt>
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> {
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return Object.freeze({
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result: realtimeSuccess(
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Object.freeze({
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session,
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...(establishedRecoveryBarrier === undefined
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? {}
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: { establishedRecoveryBarrier }),
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}),
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),
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});
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}
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function closedSuccessfully(): RealtimeReconnectOutcome<void> {
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return Object.freeze({
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result: realtimeSuccess(undefined),
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});
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}
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function confirmationSucceeded(): RealtimeResult<void> {
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return realtimeSuccess(undefined);
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}
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function recoveryToken(
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sequence = "7",
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): RealtimeCommittedRecovery {
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const checkpoint = Object.freeze({
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lastAppliedSequence: sequence,
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recoveryMode: "CURSOR",
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resumeCursor: `cursor-${sequence}`,
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streamEpoch: "epoch-1",
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}) as unknown as RealtimeRecoveryCheckpoint;
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return Object.freeze({
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kind: "RECOVERY_COMMITTED",
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streamId: "orders",
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checkpoint,
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}) as unknown as RealtimeCommittedRecovery;
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}
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function recoveryDirective(
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recovery: RealtimeCommittedRecovery,
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terminalResult: Extract<
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RealtimeResult<never>,
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{ ok: false }
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>,
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serverNotBeforeMs?: number,
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): RealtimeRecoveryReconnectDirective {
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return Object.freeze({
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kind: "RECOVERY_RECONNECT",
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recovery,
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terminalResult,
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...(serverNotBeforeMs === undefined
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? {}
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: { serverNotBeforeMs }),
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});
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}
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function deferred<Value>(): Readonly<{
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promise: Promise<Value>;
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resolve(value: Value): void;
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}> {
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let resolvePromise: ((value: Value) => void) | undefined;
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const promise = new Promise<Value>((resolve) => {
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resolvePromise = resolve;
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});
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return Object.freeze({
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promise,
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resolve(value) {
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resolvePromise?.(value);
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},
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});
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}
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async function flush(): Promise<void> {
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for (let turn = 0; turn < 8; turn += 1) {
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await Promise.resolve();
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}
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}
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async function flushUntil(
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condition: () => boolean,
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): Promise<void> {
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for (let turn = 0; turn < 50; turn += 1) {
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if (condition()) return;
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await Promise.resolve();
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}
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}
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describe("realtime reconnect coordinator", () => {
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it("owns one bounded retry loop and returns the exact last failure", async () => {
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const clock = new ManualClock();
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const environment = new MutableOnlineEnvironment(true);
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const failures = [
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realtimeFailure("CONNECT_TIMEOUT", "CONNECT", true),
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realtimeFailure("PROVIDER_UNAVAILABLE", "CONNECT", true),
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realtimeFailure("IDLE_TIMEOUT", "RECEIVE", true),
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] as const;
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let attempts = 0;
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy(),
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environment,
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clock,
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random: () => 0.5,
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confirmTransportBarrier: confirmationSucceeded,
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attempt: () => {
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const next = failures[attempts++]!;
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return failed(
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next,
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next === failures[1] ? 0 : undefined,
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);
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},
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});
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const running = coordinator.run();
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await flush();
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expect(attempts).toBe(1);
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expect(clock.sleepCalls).toEqual([50]);
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clock.advance(50);
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await flush();
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expect(attempts).toBe(2);
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expect(clock.sleepCalls).toEqual([50, 100]);
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clock.advance(100);
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const result = await running;
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expect(attempts).toBe(3);
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expect(result).toBe(failures[2]);
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expect(coordinator.getState()).toBe("IDLE");
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});
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it("does not clamp a server not-before value past elapsed budget", async () => {
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const clock = new ManualClock();
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const terminal = realtimeFailure(
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"RATE_LIMITED",
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"CONNECT",
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true,
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);
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const random = vi.fn(() => 0);
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy({
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maxAttempts: 1,
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maxElapsedMs: 500,
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}),
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environment: new MutableOnlineEnvironment(true),
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clock,
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random,
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confirmTransportBarrier: confirmationSucceeded,
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attempt: () => failed(terminal, 500),
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});
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const result = await coordinator.run();
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expect(result).toBe(terminal);
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expect(clock.sleepCalls).toEqual([]);
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expect(random).not.toHaveBeenCalled();
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});
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it.each([
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"RATE_LIMITED",
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"PROVIDER_UNAVAILABLE",
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] as const)(
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"does not reconnect an external %s attempt failure without a server hint",
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async (kind) => {
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const clock = new ManualClock();
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const terminal = realtimeFailure(
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kind,
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"CONNECT",
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true,
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);
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const attempt = vi.fn(() => failed(terminal));
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy(),
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environment: new MutableOnlineEnvironment(true),
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clock,
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confirmTransportBarrier: confirmationSucceeded,
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attempt,
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});
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const result = await coordinator.run();
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expect(result).toBe(terminal);
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expect(attempt).toHaveBeenCalledOnce();
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expect(clock.sleepCalls).toEqual([]);
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},
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);
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it("does not reconnect an external close failure that requires but omits a server hint", async () => {
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const clock = new ManualClock();
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const terminal = realtimeFailure(
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"PROVIDER_UNAVAILABLE",
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"RECEIVE",
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true,
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);
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const attempt = vi.fn(() =>
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opened(
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Object.freeze({
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classifyClosed: (
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receipt: RealtimeReconnectOutcome<void>,
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) => receipt,
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close: vi.fn(),
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waitClosed: () => failed(terminal),
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}),
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),
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);
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy(),
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environment: new MutableOnlineEnvironment(true),
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clock,
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confirmTransportBarrier: confirmationSucceeded,
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attempt,
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});
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const result = await coordinator.run();
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expect(result).toBe(terminal);
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expect(attempt).toHaveBeenCalledOnce();
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expect(clock.sleepCalls).toEqual([]);
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});
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it("waits for an explicit online signal without a retry timer", async () => {
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const clock = new ManualClock();
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const environment = new MutableOnlineEnvironment(false);
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const terminal = realtimeFailure(
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"FORBIDDEN",
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"CONNECT",
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false,
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);
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const attempt = vi.fn(() => failed(terminal));
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy(),
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environment,
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clock,
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random: () => 0.5,
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confirmTransportBarrier: confirmationSucceeded,
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attempt,
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});
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const running = coordinator.run();
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await flush();
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clock.advance(100);
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await flush();
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expect(attempt).not.toHaveBeenCalled();
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expect(clock.sleepCalls).toEqual([]);
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environment.emit(true);
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await flush();
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expect(clock.sleepCalls).toEqual([50]);
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expect(attempt).not.toHaveBeenCalled();
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clock.advance(50);
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const result = await running;
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expect(attempt).toHaveBeenCalledTimes(1);
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expect(result).toBe(terminal);
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});
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it("resets a spent retry only after policy eligibility", async () => {
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const runScenario = async (markValid: boolean) => {
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const clock = new ManualClock();
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const firstFailure = realtimeFailure(
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"CONNECT_TIMEOUT",
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"CONNECT",
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true,
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);
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const sessionFailure = realtimeFailure(
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"PROVIDER_UNAVAILABLE",
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"RECEIVE",
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true,
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);
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const terminal = realtimeFailure(
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"FORBIDDEN",
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"CONNECT",
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false,
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);
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const closeSession = vi.fn();
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let attempts = 0;
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy({ maxAttempts: 1 }),
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environment: new MutableOnlineEnvironment(true),
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clock,
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random: () => 0,
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confirmTransportBarrier: confirmationSucceeded,
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attempt: (
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context: RealtimeReconnectAttemptContext,
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) => {
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attempts += 1;
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if (attempts === 1) return failed(firstFailure);
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if (attempts === 2) {
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if (markValid) {
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context.markValidHeartbeatOrEvent();
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}
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return opened<RealtimeReconnectOutcome<void>>(
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Object.freeze({
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classifyClosed: (
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receipt: RealtimeReconnectOutcome<void>,
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) => receipt,
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close: closeSession,
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waitClosed: () =>
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failed(sessionFailure, 0),
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}),
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);
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}
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return failed(terminal);
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},
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});
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const running = coordinator.run();
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await flush();
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clock.advance(0);
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await flush();
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if (markValid) {
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await flushUntil(() => clock.sleepCalls.length === 2);
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expect(clock.sleepCalls).toEqual([0, 0]);
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clock.advance(0);
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}
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const result = await running;
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return {
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attempts,
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closeSession,
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result,
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sessionFailure,
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terminal,
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};
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};
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const unstable = await runScenario(false);
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expect(unstable.attempts).toBe(2);
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expect(unstable.result).toBe(unstable.sessionFailure);
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expect(unstable.closeSession).toHaveBeenCalledOnce();
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const eligible = await runScenario(true);
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expect(eligible.attempts).toBe(3);
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expect(eligible.result).toBe(eligible.terminal);
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expect(eligible.closeSession).toHaveBeenCalledOnce();
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});
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|
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it("does not reconnect before the session's authoritative close result", async () => {
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const clock = new ManualClock();
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const closure =
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deferred<RealtimeReconnectOutcome<void>>();
|
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const terminal = realtimeFailure(
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"FORBIDDEN",
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"RECEIVE",
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false,
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);
|
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const closeSession = vi.fn();
|
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const attempt = vi.fn(() =>
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opened<RealtimeReconnectOutcome<void>>(
|
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Object.freeze({
|
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classifyClosed: (
|
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receipt: RealtimeReconnectOutcome<void>,
|
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) => receipt,
|
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close: closeSession,
|
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waitClosed: () => closure.promise,
|
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}),
|
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),
|
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);
|
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const coordinator = createRealtimeReconnectCoordinator({
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policy: policy(),
|
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environment: new MutableOnlineEnvironment(true),
|
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clock,
|
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confirmTransportBarrier: confirmationSucceeded,
|
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attempt,
|
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});
|
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let settled = false;
|
|
|
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const running = coordinator.run().then((result) => {
|
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settled = true;
|
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return result;
|
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});
|
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await flush();
|
|
|
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expect(attempt).toHaveBeenCalledOnce();
|
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expect(clock.sleepCalls).toEqual([]);
|
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expect(settled).toBe(false);
|
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expect(coordinator.getState()).toBe("RUNNING");
|
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|
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closure.resolve(failed(terminal));
|
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const result = await running;
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expect(result).toBe(terminal);
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expect(closeSession).toHaveBeenCalledOnce();
|
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});
|
|
|
|
it("carries an exact recovery token into the next attempt and opens only after confirmation", async () => {
|
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const clock = new ManualClock();
|
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const recovery = recoveryToken();
|
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const terminal = realtimeFailure(
|
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"CURSOR_EXPIRED",
|
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"RECOVER",
|
|
false,
|
|
);
|
|
const directive = recoveryDirective(recovery, terminal);
|
|
const completed = closedSuccessfully();
|
|
const confirmation = realtimeSuccess(undefined);
|
|
const confirmTransportBarrier = vi.fn(
|
|
(received: RealtimeCommittedRecovery) => {
|
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expect(received).toBe(recovery);
|
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return confirmation;
|
|
},
|
|
);
|
|
let attempts = 0;
|
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let gateSettled = false;
|
|
let gateResult: RealtimeResult<void> | undefined;
|
|
type RecoveryCloseReceipt =
|
|
| RealtimeRecoveryReconnectDirective
|
|
| RealtimeReconnectOutcome<void>;
|
|
const coordinator = createRealtimeReconnectCoordinator({
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|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
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clock,
|
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random: () => 0,
|
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confirmTransportBarrier,
|
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attempt: (context) => {
|
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attempts += 1;
|
|
if (attempts === 1) {
|
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expect(context.pendingRecovery).toBeNull();
|
|
return opened<RecoveryCloseReceipt>(
|
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Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RecoveryCloseReceipt,
|
|
) => receipt,
|
|
close: vi.fn(),
|
|
waitClosed: () => directive,
|
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}),
|
|
);
|
|
}
|
|
|
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expect(context.pendingRecovery).toBe(recovery);
|
|
const gate =
|
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context.waitForRecoveryBarrierConfirmation();
|
|
void gate.then((result) => {
|
|
gateSettled = true;
|
|
gateResult = result;
|
|
});
|
|
expect(gateSettled).toBe(false);
|
|
return opened<RecoveryCloseReceipt>(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RecoveryCloseReceipt,
|
|
) => receipt,
|
|
close: vi.fn(),
|
|
waitClosed: () => completed,
|
|
}),
|
|
recovery,
|
|
);
|
|
},
|
|
});
|
|
|
|
const running = coordinator.run();
|
|
await flushUntil(() => clock.sleepCalls.length === 1);
|
|
expect(clock.sleepCalls).toEqual([0]);
|
|
clock.advance(0);
|
|
const result = await running;
|
|
await flush();
|
|
|
|
expect(attempts).toBe(2);
|
|
expect(confirmTransportBarrier).toHaveBeenCalledOnce();
|
|
expect(gateSettled).toBe(true);
|
|
expect(gateResult).toBe(confirmation);
|
|
expect(result).toBe(completed.result);
|
|
});
|
|
|
|
it.each([
|
|
["missing", undefined],
|
|
["cloned", recoveryToken()],
|
|
] as const)(
|
|
"rejects a %s recovery proof and closes the new session",
|
|
async (_case, proof) => {
|
|
const clock = new ManualClock();
|
|
const recovery = recoveryToken();
|
|
const terminal = realtimeFailure(
|
|
"CURSOR_EXPIRED",
|
|
"RECOVER",
|
|
false,
|
|
);
|
|
const closeSession = vi.fn();
|
|
const waitClosed = vi.fn(closedSuccessfully);
|
|
const confirmTransportBarrier = vi.fn(
|
|
confirmationSucceeded,
|
|
);
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy({ maxAttempts: 1 }),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock,
|
|
random: () => 0,
|
|
confirmTransportBarrier,
|
|
attempt: (context) => {
|
|
expect(context.pendingRecovery).toBe(recovery);
|
|
const session = Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: closeSession,
|
|
waitClosed,
|
|
});
|
|
return proof === undefined
|
|
? opened(session)
|
|
: opened(session, proof);
|
|
},
|
|
});
|
|
|
|
const running = coordinator.run({
|
|
initialRecovery: recoveryDirective(
|
|
recovery,
|
|
terminal,
|
|
),
|
|
});
|
|
await flushUntil(() => clock.sleepCalls.length === 1);
|
|
clock.advance(0);
|
|
const result = await running;
|
|
|
|
expect(result).toEqual(
|
|
realtimeFailure(
|
|
"PROTOCOL_MISMATCH",
|
|
"RECOVER",
|
|
false,
|
|
),
|
|
);
|
|
expect(closeSession).toHaveBeenCalledOnce();
|
|
expect(waitClosed).not.toHaveBeenCalled();
|
|
expect(confirmTransportBarrier).not.toHaveBeenCalled();
|
|
},
|
|
);
|
|
|
|
it("settles the readiness gate and run with the exact confirmation failure", async () => {
|
|
const clock = new ManualClock();
|
|
const recovery = recoveryToken();
|
|
const terminal = realtimeFailure(
|
|
"CURSOR_EXPIRED",
|
|
"RECOVER",
|
|
false,
|
|
);
|
|
const confirmationFailure = realtimeFailure(
|
|
"SCOPE_PROTOCOL_VIOLATION",
|
|
"RECOVER",
|
|
false,
|
|
);
|
|
const closeSession = vi.fn();
|
|
const waitClosed = vi.fn(closedSuccessfully);
|
|
let gateResult: RealtimeResult<void> | undefined;
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy({ maxAttempts: 1 }),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock,
|
|
random: () => 0,
|
|
confirmTransportBarrier: () => confirmationFailure,
|
|
attempt: (context) => {
|
|
void context
|
|
.waitForRecoveryBarrierConfirmation()
|
|
.then((result) => {
|
|
gateResult = result;
|
|
});
|
|
return opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: closeSession,
|
|
waitClosed,
|
|
}),
|
|
recovery,
|
|
);
|
|
},
|
|
});
|
|
|
|
const running = coordinator.run({
|
|
initialRecovery: recoveryDirective(
|
|
recovery,
|
|
terminal,
|
|
),
|
|
});
|
|
await flushUntil(() => clock.sleepCalls.length === 1);
|
|
clock.advance(0);
|
|
const result = await running;
|
|
await flush();
|
|
|
|
expect(result).toBe(confirmationFailure);
|
|
expect(gateResult).toBe(confirmationFailure);
|
|
expect(closeSession).toHaveBeenCalledOnce();
|
|
expect(waitClosed).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it("retains the exact recovery token across retryable attempt failures and returns its terminal result on exhaustion", async () => {
|
|
const clock = new ManualClock();
|
|
const recovery = recoveryToken();
|
|
const terminal = realtimeFailure(
|
|
"CURSOR_EXPIRED",
|
|
"RECOVER",
|
|
false,
|
|
);
|
|
const attemptFailure = realtimeFailure(
|
|
"CONNECT_TIMEOUT",
|
|
"CONNECT",
|
|
true,
|
|
);
|
|
const gateResults: RealtimeResult<void>[] = [];
|
|
const seenRecoveries: Array<
|
|
RealtimeCommittedRecovery | null
|
|
> = [];
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy({ maxAttempts: 2 }),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock,
|
|
random: () => 0,
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: (context) => {
|
|
seenRecoveries.push(context.pendingRecovery);
|
|
void context
|
|
.waitForRecoveryBarrierConfirmation()
|
|
.then((result) => gateResults.push(result));
|
|
return failed(attemptFailure);
|
|
},
|
|
});
|
|
|
|
const running = coordinator.run({
|
|
initialRecovery: recoveryDirective(
|
|
recovery,
|
|
terminal,
|
|
),
|
|
});
|
|
await flushUntil(() => clock.sleepCalls.length === 1);
|
|
clock.advance(0);
|
|
await flushUntil(() => clock.sleepCalls.length === 2);
|
|
clock.advance(0);
|
|
const result = await running;
|
|
await flush();
|
|
|
|
expect(seenRecoveries).toEqual([recovery, recovery]);
|
|
expect(gateResults).toEqual([
|
|
attemptFailure,
|
|
attemptFailure,
|
|
]);
|
|
expect(gateResults[0]).toBe(attemptFailure);
|
|
expect(gateResults[1]).toBe(attemptFailure);
|
|
expect(result).toBe(terminal);
|
|
});
|
|
|
|
it("fails a no-pending gate immediately and rejects any unsolicited proof", async () => {
|
|
const proof = recoveryToken();
|
|
const closeSession = vi.fn();
|
|
const confirmTransportBarrier = vi.fn(
|
|
confirmationSucceeded,
|
|
);
|
|
let gateResult: RealtimeResult<void> | undefined;
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier,
|
|
attempt: async (context) => {
|
|
gateResult =
|
|
await context.waitForRecoveryBarrierConfirmation();
|
|
return opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: closeSession,
|
|
waitClosed: closedSuccessfully,
|
|
}),
|
|
proof,
|
|
);
|
|
},
|
|
});
|
|
|
|
const result = await coordinator.run();
|
|
|
|
expect(gateResult).toEqual(
|
|
realtimeFailure(
|
|
"PROTOCOL_MISMATCH",
|
|
"RECOVER",
|
|
false,
|
|
),
|
|
);
|
|
expect(result).toBe(gateResult);
|
|
expect(closeSession).toHaveBeenCalledOnce();
|
|
expect(confirmTransportBarrier).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it("applies retry ceilings to an initial recovery and preserves its exact terminal result", async () => {
|
|
const recovery = recoveryToken();
|
|
const terminal = realtimeFailure(
|
|
"CURSOR_EXPIRED",
|
|
"RECOVER",
|
|
false,
|
|
);
|
|
const attempt = vi.fn();
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy({
|
|
maxAttempts: 1,
|
|
maxElapsedMs: 500,
|
|
}),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt,
|
|
});
|
|
|
|
const result = await coordinator.run({
|
|
initialRecovery: recoveryDirective(
|
|
recovery,
|
|
terminal,
|
|
500,
|
|
),
|
|
});
|
|
|
|
expect(result).toBe(terminal);
|
|
expect(attempt).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it("settles a pending readiness gate when the run is aborted", async () => {
|
|
const clock = new ManualClock();
|
|
const recovery = recoveryToken();
|
|
const terminal = realtimeFailure(
|
|
"CURSOR_EXPIRED",
|
|
"RECOVER",
|
|
false,
|
|
);
|
|
const attemptResult =
|
|
deferred<
|
|
RealtimeReconnectOutcome<
|
|
RealtimeReconnectAttemptSuccess<
|
|
RealtimeReconnectOutcome<void>
|
|
>
|
|
>
|
|
>();
|
|
let gateResult: RealtimeResult<void> | undefined;
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy({ maxAttempts: 1 }),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock,
|
|
random: () => 0,
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: (context) => {
|
|
void context
|
|
.waitForRecoveryBarrierConfirmation()
|
|
.then((result) => {
|
|
gateResult = result;
|
|
});
|
|
return attemptResult.promise;
|
|
},
|
|
});
|
|
const controller = new AbortController();
|
|
|
|
const running = coordinator.run({
|
|
signal: controller.signal,
|
|
initialRecovery: recoveryDirective(
|
|
recovery,
|
|
terminal,
|
|
),
|
|
});
|
|
await flushUntil(() => clock.sleepCalls.length === 1);
|
|
clock.advance(0);
|
|
await flush();
|
|
controller.abort();
|
|
const result = await running;
|
|
await flush();
|
|
|
|
expect(result).toEqual(
|
|
realtimeFailure("ABORTED", "CONNECT", false),
|
|
);
|
|
expect(gateResult).toEqual(
|
|
realtimeFailure("ABORTED", "RECOVER", false),
|
|
);
|
|
|
|
attemptResult.resolve(
|
|
opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: vi.fn(),
|
|
waitClosed: closedSuccessfully,
|
|
}),
|
|
recovery,
|
|
),
|
|
);
|
|
await flush();
|
|
});
|
|
|
|
it("rejects accessors without invoking them and consumes proxy values only from one descriptor snapshot", async () => {
|
|
let getterReads = 0;
|
|
const accessorOutcome = Object.defineProperty({}, "result", {
|
|
enumerable: true,
|
|
get() {
|
|
getterReads += 1;
|
|
return realtimeSuccess(undefined);
|
|
},
|
|
});
|
|
const accessorCoordinator =
|
|
createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () =>
|
|
accessorOutcome as unknown as RealtimeReconnectOutcome<
|
|
RealtimeReconnectAttemptSuccess<unknown>
|
|
>,
|
|
});
|
|
|
|
await expect(accessorCoordinator.run()).resolves.toEqual(
|
|
realtimeFailure(
|
|
"PROTOCOL_MISMATCH",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
expect(getterReads).toBe(0);
|
|
|
|
const completed = closedSuccessfully();
|
|
const session = Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: vi.fn(),
|
|
waitClosed: () => completed,
|
|
});
|
|
const rawOutcome = opened(session);
|
|
const proxyReads: PropertyKey[] = [];
|
|
const proxyOutcome = new Proxy(rawOutcome, {
|
|
get(_target, key) {
|
|
proxyReads.push(key);
|
|
if (key === "then") return undefined;
|
|
throw new Error("raw property reread");
|
|
},
|
|
});
|
|
const proxyCoordinator =
|
|
createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () => proxyOutcome,
|
|
});
|
|
|
|
await expect(proxyCoordinator.run()).resolves.toBe(
|
|
completed.result,
|
|
);
|
|
expect(proxyReads).toEqual(["then"]);
|
|
});
|
|
|
|
it("rechecks scope after attempt and waitClosed boundaries before accepting callbacks", async () => {
|
|
let attemptScopeCurrent = true;
|
|
const lateAttemptClose = vi.fn();
|
|
const lateAttemptWaitClosed = vi.fn(closedSuccessfully);
|
|
const lateAttemptCoordinator =
|
|
createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
isCurrent: () => attemptScopeCurrent,
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () => {
|
|
attemptScopeCurrent = false;
|
|
return opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: lateAttemptClose,
|
|
waitClosed: lateAttemptWaitClosed,
|
|
}),
|
|
);
|
|
},
|
|
});
|
|
|
|
await expect(lateAttemptCoordinator.run()).resolves.toEqual(
|
|
realtimeFailure("SCOPE_FENCED", "CONNECT", false),
|
|
);
|
|
expect(lateAttemptClose).toHaveBeenCalledOnce();
|
|
expect(lateAttemptWaitClosed).not.toHaveBeenCalled();
|
|
|
|
let closeScopeCurrent = true;
|
|
const classifyClosed = vi.fn(
|
|
(receipt: RealtimeReconnectOutcome<void>) => receipt,
|
|
);
|
|
const closeSession = vi.fn();
|
|
const closeCoordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
isCurrent: () => closeScopeCurrent,
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () =>
|
|
opened(
|
|
Object.freeze({
|
|
classifyClosed,
|
|
close: closeSession,
|
|
waitClosed: () => {
|
|
closeScopeCurrent = false;
|
|
return closedSuccessfully();
|
|
},
|
|
}),
|
|
),
|
|
});
|
|
|
|
await expect(closeCoordinator.run()).resolves.toEqual(
|
|
realtimeFailure("SCOPE_FENCED", "CONNECT", false),
|
|
);
|
|
expect(classifyClosed).not.toHaveBeenCalled();
|
|
expect(closeSession).toHaveBeenCalledOnce();
|
|
});
|
|
|
|
it("rejects extra and missing outcome keys through the common result codec", async () => {
|
|
const validSession = Object.freeze({
|
|
classifyClosed: closedSuccessfully,
|
|
close: vi.fn(),
|
|
waitClosed: closedSuccessfully,
|
|
});
|
|
const invalidOutcomes = [
|
|
{
|
|
extra: true,
|
|
result: realtimeSuccess(validSession),
|
|
},
|
|
{
|
|
result: { ok: true },
|
|
},
|
|
{
|
|
result: {
|
|
ok: false,
|
|
error: {
|
|
extra: true,
|
|
kind: "FORBIDDEN",
|
|
operation: "CONNECT",
|
|
retryable: false,
|
|
},
|
|
},
|
|
},
|
|
];
|
|
|
|
for (const invalid of invalidOutcomes) {
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () =>
|
|
invalid as unknown as RealtimeReconnectOutcome<
|
|
RealtimeReconnectAttemptSuccess<unknown>
|
|
>,
|
|
});
|
|
|
|
await expect(coordinator.run()).resolves.toEqual(
|
|
realtimeFailure(
|
|
"PROTOCOL_MISMATCH",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
}
|
|
});
|
|
|
|
it("rechecks abort immediately after listener registration", async () => {
|
|
let abortReads = 0;
|
|
let listener: (() => void) | undefined;
|
|
const signal = {
|
|
get aborted() {
|
|
abortReads += 1;
|
|
return abortReads >= 2;
|
|
},
|
|
addEventListener(
|
|
type: string,
|
|
nextListener: () => void,
|
|
) {
|
|
if (type === "abort") listener = nextListener;
|
|
},
|
|
removeEventListener() {
|
|
listener = undefined;
|
|
},
|
|
} as unknown as AbortSignal;
|
|
const attempt = vi.fn();
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt,
|
|
});
|
|
|
|
const result = await coordinator.run({ signal });
|
|
|
|
expect(listener).toBeUndefined();
|
|
expect(attempt).not.toHaveBeenCalled();
|
|
expect(result).toEqual(
|
|
realtimeFailure("ABORTED", "CONNECT", false),
|
|
);
|
|
});
|
|
|
|
it("bounds a non-cooperative retry sleep after its phase is aborted", async () => {
|
|
vi.useFakeTimers();
|
|
const environment = new MutableOnlineEnvironment(true);
|
|
const sleep = vi.fn(
|
|
() => new Promise<void>(() => undefined),
|
|
);
|
|
const clock: ClockPort = Object.freeze({
|
|
now: () => 0,
|
|
sleep,
|
|
});
|
|
const retryable = realtimeFailure(
|
|
"CONNECT_TIMEOUT",
|
|
"CONNECT",
|
|
true,
|
|
);
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment,
|
|
clock,
|
|
random: () => 0,
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () => failed(retryable),
|
|
});
|
|
|
|
try {
|
|
const running = coordinator.run();
|
|
await flushUntil(() => sleep.mock.calls.length === 1);
|
|
environment.emit(false);
|
|
await flush();
|
|
|
|
await vi.advanceTimersByTimeAsync(
|
|
REALTIME_RECONNECT_CEILINGS.drainTimeoutMs,
|
|
);
|
|
const result = await running;
|
|
|
|
expect(result).toEqual(
|
|
realtimeFailure(
|
|
"PROVIDER_UNAVAILABLE",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
expect(coordinator.getState()).toBe("DRAINING");
|
|
await expect(coordinator.run()).resolves.toEqual(
|
|
realtimeFailure(
|
|
"PROTOCOL_MISMATCH",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
expect(environment.listeners.size).toBe(0);
|
|
expect(vi.getTimerCount()).toBe(0);
|
|
} finally {
|
|
coordinator.close();
|
|
vi.useRealTimers();
|
|
}
|
|
});
|
|
|
|
it("bounds a non-cooperative attempt and closes its late successful session before leaving DRAINING", async () => {
|
|
vi.useFakeTimers();
|
|
const environment = new MutableOnlineEnvironment(true);
|
|
const attemptResult =
|
|
deferred<
|
|
RealtimeReconnectOutcome<
|
|
RealtimeReconnectAttemptSuccess<
|
|
RealtimeReconnectOutcome<void>
|
|
>
|
|
>
|
|
>();
|
|
const lateClose = vi.fn();
|
|
const lateWaitClosed = vi.fn(closedSuccessfully);
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment,
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () => attemptResult.promise,
|
|
});
|
|
|
|
try {
|
|
const running = coordinator.run();
|
|
await flush();
|
|
environment.emit(false);
|
|
await flush();
|
|
|
|
await vi.advanceTimersByTimeAsync(
|
|
REALTIME_RECONNECT_CEILINGS.drainTimeoutMs,
|
|
);
|
|
const result = await running;
|
|
|
|
expect(result).toEqual(
|
|
realtimeFailure(
|
|
"PROVIDER_UNAVAILABLE",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
expect(coordinator.getState()).toBe("DRAINING");
|
|
await expect(coordinator.run()).resolves.toEqual(
|
|
realtimeFailure(
|
|
"PROTOCOL_MISMATCH",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
expect(environment.listeners.size).toBe(0);
|
|
expect(vi.getTimerCount()).toBe(0);
|
|
|
|
attemptResult.resolve(
|
|
opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: lateClose,
|
|
waitClosed: lateWaitClosed,
|
|
}),
|
|
),
|
|
);
|
|
await flush();
|
|
|
|
expect(lateClose).toHaveBeenCalledOnce();
|
|
expect(lateWaitClosed).not.toHaveBeenCalled();
|
|
expect(coordinator.getState()).toBe("IDLE");
|
|
} finally {
|
|
coordinator.close();
|
|
vi.useRealTimers();
|
|
}
|
|
});
|
|
|
|
it("cancels the drain timer on abort and keeps the late generation fenced", async () => {
|
|
vi.useFakeTimers();
|
|
const environment = new MutableOnlineEnvironment(true);
|
|
const attemptResult =
|
|
deferred<
|
|
RealtimeReconnectOutcome<
|
|
RealtimeReconnectAttemptSuccess<
|
|
RealtimeReconnectOutcome<void>
|
|
>
|
|
>
|
|
>();
|
|
const lateClose = vi.fn();
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment,
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () => attemptResult.promise,
|
|
});
|
|
const controller = new AbortController();
|
|
|
|
try {
|
|
const running = coordinator.run({
|
|
signal: controller.signal,
|
|
});
|
|
await flush();
|
|
environment.emit(false);
|
|
await flush();
|
|
expect(vi.getTimerCount()).toBe(1);
|
|
|
|
controller.abort();
|
|
const result = await running;
|
|
|
|
expect(result).toEqual(
|
|
realtimeFailure("ABORTED", "CONNECT", false),
|
|
);
|
|
expect(coordinator.getState()).toBe("DRAINING");
|
|
expect(environment.listeners.size).toBe(0);
|
|
expect(vi.getTimerCount()).toBe(0);
|
|
|
|
attemptResult.resolve(
|
|
opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: lateClose,
|
|
waitClosed: closedSuccessfully,
|
|
}),
|
|
),
|
|
);
|
|
await flush();
|
|
|
|
expect(lateClose).toHaveBeenCalledOnce();
|
|
expect(coordinator.getState()).toBe("IDLE");
|
|
} finally {
|
|
coordinator.close();
|
|
vi.useRealTimers();
|
|
}
|
|
});
|
|
|
|
it("keeps a healthy waitClosed unbounded but bounds its post-abort drain", async () => {
|
|
vi.useFakeTimers();
|
|
const environment = new MutableOnlineEnvironment(true);
|
|
const closure =
|
|
deferred<RealtimeReconnectOutcome<void>>();
|
|
const classifyClosed = vi.fn(
|
|
(receipt: RealtimeReconnectOutcome<void>) => receipt,
|
|
);
|
|
const closeSession = vi.fn();
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment,
|
|
clock: new ManualClock(),
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: () =>
|
|
opened(
|
|
Object.freeze({
|
|
classifyClosed,
|
|
close: closeSession,
|
|
waitClosed: () => closure.promise,
|
|
}),
|
|
),
|
|
});
|
|
|
|
try {
|
|
let settled = false;
|
|
const running = coordinator.run().then((result) => {
|
|
settled = true;
|
|
return result;
|
|
});
|
|
await flush();
|
|
|
|
await vi.advanceTimersByTimeAsync(
|
|
REALTIME_RECONNECT_CEILINGS.drainTimeoutMs * 2,
|
|
);
|
|
expect(settled).toBe(false);
|
|
expect(coordinator.getState()).toBe("RUNNING");
|
|
expect(vi.getTimerCount()).toBe(0);
|
|
|
|
environment.emit(false);
|
|
await flush();
|
|
await vi.advanceTimersByTimeAsync(
|
|
REALTIME_RECONNECT_CEILINGS.drainTimeoutMs,
|
|
);
|
|
const result = await running;
|
|
|
|
expect(result).toEqual(
|
|
realtimeFailure(
|
|
"PROVIDER_UNAVAILABLE",
|
|
"CONNECT",
|
|
false,
|
|
),
|
|
);
|
|
expect(closeSession).toHaveBeenCalled();
|
|
expect(classifyClosed).not.toHaveBeenCalled();
|
|
expect(coordinator.getState()).toBe("DRAINING");
|
|
expect(environment.listeners.size).toBe(0);
|
|
expect(vi.getTimerCount()).toBe(0);
|
|
|
|
closure.resolve(closedSuccessfully());
|
|
await flush();
|
|
|
|
expect(classifyClosed).not.toHaveBeenCalled();
|
|
expect(coordinator.getState()).toBe("IDLE");
|
|
} finally {
|
|
coordinator.close();
|
|
vi.useRealTimers();
|
|
}
|
|
});
|
|
|
|
it("uses waitClosed as authority and fences an aborted late generation", async () => {
|
|
const clock = new ManualClock();
|
|
const attemptResult =
|
|
deferred<
|
|
RealtimeReconnectOutcome<
|
|
RealtimeReconnectAttemptSuccess<
|
|
RealtimeReconnectOutcome<void>
|
|
>
|
|
>
|
|
>();
|
|
let captured:
|
|
| RealtimeReconnectAttemptContext
|
|
| undefined;
|
|
const lateClose = vi.fn();
|
|
const lateWaitClosed = vi.fn(closedSuccessfully);
|
|
const coordinator = createRealtimeReconnectCoordinator({
|
|
policy: policy(),
|
|
environment: new MutableOnlineEnvironment(true),
|
|
clock,
|
|
confirmTransportBarrier: confirmationSucceeded,
|
|
attempt: (context) => {
|
|
captured = context;
|
|
return attemptResult.promise;
|
|
},
|
|
});
|
|
const controller = new AbortController();
|
|
|
|
const running = coordinator.run({ signal: controller.signal });
|
|
await flush();
|
|
expect(captured?.isCurrent()).toBe(true);
|
|
|
|
controller.abort();
|
|
const result = await running;
|
|
expect(result).toEqual(
|
|
realtimeFailure("ABORTED", "CONNECT", false),
|
|
);
|
|
expect(coordinator.getState()).toBe("DRAINING");
|
|
expect(captured?.isCurrent()).toBe(false);
|
|
|
|
attemptResult.resolve(
|
|
opened(
|
|
Object.freeze({
|
|
classifyClosed: (
|
|
receipt: RealtimeReconnectOutcome<void>,
|
|
) => receipt,
|
|
close: lateClose,
|
|
waitClosed: lateWaitClosed,
|
|
}),
|
|
),
|
|
);
|
|
await flush();
|
|
|
|
expect(lateClose).toHaveBeenCalledOnce();
|
|
expect(lateWaitClosed).not.toHaveBeenCalled();
|
|
expect(coordinator.getState()).toBe("IDLE");
|
|
});
|
|
});
|