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tunnel server: check and close inactive connections
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Roy Razon
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Sep 18, 2023
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,17 @@ | ||
| /** @type {import('ts-jest').JestConfigWithTsJest} */ | ||
| module.exports = { | ||
| preset: 'ts-jest', | ||
| preset: 'ts-jest/presets/default-esm', | ||
| testEnvironment: 'node', | ||
| testMatch: ['!dist/', '**/*.test.ts'], | ||
| }; | ||
| extensionsToTreatAsEsm: ['.ts'], | ||
| transform: { | ||
| // '^.+\\.[tj]sx?$' to process js/ts with `ts-jest` | ||
| // '^.+\\.m?[tj]sx?$' to process js/ts/mjs/mts with `ts-jest` | ||
| '^.+\\.tsx?$': [ | ||
| 'ts-jest', | ||
| { | ||
| useESM: true, | ||
| }, | ||
| ], | ||
| }, | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| import { EventEmitter } from 'tseep' | ||
| import { afterAll, beforeAll, beforeEach, describe, expect, it, jest } from '@jest/globals' | ||
| import { TimeoutError } from 'p-timeout' | ||
| import { onceWithTimeout } from './events' | ||
|
|
||
| describe('onceWithTimeout', () => { | ||
| beforeAll(() => { | ||
| jest.useFakeTimers() | ||
| }) | ||
| afterAll(() => { | ||
| jest.useRealTimers() | ||
| }) | ||
|
|
||
| let emitter: EventEmitter<{ foo: () => void; error: (err: Error) => void }> | ||
| beforeEach(() => { | ||
| emitter = new EventEmitter() | ||
| }) | ||
|
|
||
| describe('when no timeout occurs', () => { | ||
| let p: Promise<void> | ||
| beforeEach(() => { | ||
| p = onceWithTimeout(emitter, 'foo', { milliseconds: 10 }) | ||
| emitter.emit('foo') | ||
| }) | ||
| it('resolves to undefined', async () => { | ||
| await expect(p).resolves.toBeUndefined() | ||
| }) | ||
| }) | ||
|
|
||
| describe('when an error is emitted', () => { | ||
| let p: Promise<void> | ||
| const e = new Error('boom') | ||
| beforeEach(() => { | ||
| p = onceWithTimeout(emitter, 'foo', { milliseconds: 10 }) | ||
| emitter.emit('error', e) | ||
| }) | ||
| it('rejects with the error', async () => { | ||
| await expect(p).rejects.toThrow(e) | ||
| }) | ||
| }) | ||
|
|
||
| describe('when a timeout occurs', () => { | ||
| describe('when no fallback is specified', () => { | ||
| let p: Promise<void> | ||
| beforeEach(() => { | ||
| p = onceWithTimeout(emitter, 'foo', { milliseconds: 10 }) | ||
| jest.advanceTimersByTime(10) | ||
| }) | ||
|
|
||
| it('rejects with a TimeoutError', async () => { | ||
| await expect(p).rejects.toThrow(TimeoutError) | ||
| await expect(p).rejects.toThrow('timed out after 10ms') | ||
| }) | ||
| }) | ||
|
|
||
| describe('when a fallback is specified', () => { | ||
| let p: Promise<12> | ||
| beforeEach(() => { | ||
| p = onceWithTimeout(emitter, 'foo', { milliseconds: 10, fallback: async () => 12 as const }) | ||
| jest.advanceTimersByTime(10) | ||
| }) | ||
|
|
||
| it('resolves with the fallback', async () => { | ||
| await expect(p).resolves.toBe(12) | ||
| }) | ||
| }) | ||
| }) | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| import events from 'events' | ||
| import { TimeoutError } from 'p-timeout' | ||
|
|
||
| interface NodeEventTarget { | ||
| once(eventName: string | symbol, listener: (...args: unknown[]) => void): this | ||
| } | ||
|
|
||
| export async function onceWithTimeout( | ||
| target: NodeEventTarget, | ||
| event: string | symbol, | ||
| opts: { milliseconds: number }, | ||
| ): Promise<void> | ||
| export async function onceWithTimeout <T = unknown>( | ||
| target: NodeEventTarget, | ||
| event: string | symbol, | ||
| opts: { milliseconds: number; fallback: () => T | Promise<T> }, | ||
| ): Promise<T> | ||
| export async function onceWithTimeout <T = unknown>( | ||
| target: NodeEventTarget, | ||
| event: string | symbol, | ||
| { milliseconds, fallback }: { milliseconds: number; fallback?: () => T | Promise<T> }, | ||
| ): Promise<T | void> { | ||
| const signal = AbortSignal.timeout(milliseconds) | ||
| return await events.once(target, event, { signal }).then( | ||
| () => undefined, | ||
| async e => { | ||
| if (!signal.aborted || (e as Error).name !== 'AbortError') { | ||
| throw e | ||
| } | ||
| if (fallback) { | ||
| return await fallback() | ||
| } | ||
| throw new TimeoutError(`timed out after ${milliseconds}ms`) | ||
| }, | ||
| ) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| export const idGenerator = () => { | ||
| let nextId = 0 | ||
| return { | ||
| next: () => { | ||
| const result = nextId | ||
| nextId += 1 | ||
| return result | ||
| }, | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| import { Logger } from 'pino' | ||
| import { IEventEmitter, EventEmitter } from 'tseep' | ||
| import { nextTick } from 'process' | ||
| import { idGenerator } from './id-generator' | ||
|
|
||
| export class KeyAlreadyExistsError<V> extends Error { | ||
| constructor(readonly key: string, readonly value: V) { | ||
| super(`key already exists: "${key}"`) | ||
| } | ||
| } | ||
|
|
||
| export type TransactionDescriptor = { readonly txId: number | string } | ||
|
|
||
| type StoreEvents = { | ||
| delete: () => void | ||
| } | ||
|
|
||
| export type EntryWatcher = { | ||
| once: (event: 'delete', listener: () => void) => void | ||
| } | ||
|
|
||
| export const inMemoryStore = <V extends {}>({ log }: { log: Logger }) => { | ||
| type MapValue = { value: V; watcher: IEventEmitter<StoreEvents>; setTx: TransactionDescriptor } | ||
| const map = new Map<string, MapValue>() | ||
| const txIdGen = idGenerator() | ||
| return { | ||
| get: async (key: string) => { | ||
| const entry = map.get(key) | ||
| return entry === undefined ? undefined : { value: entry.value, watcher: entry.watcher } | ||
| }, | ||
| set: async (key: string, value: V) => { | ||
| const existing = map.get(key) | ||
| if (existing !== undefined) { | ||
| throw new KeyAlreadyExistsError<V>(key, existing.value) | ||
| } | ||
| const tx: TransactionDescriptor = { txId: txIdGen.next() } | ||
| log.debug('setting key %s id %s: %j', key, tx.txId, value) | ||
| const watcher = new EventEmitter<StoreEvents>() | ||
| map.set(key, { value, watcher, setTx: tx }) | ||
| return { tx, watcher: watcher as EntryWatcher } | ||
| }, | ||
| delete: async (key: string, setTx?: TransactionDescriptor) => { | ||
| const value = map.get(key) | ||
| if (value && (setTx === undefined || value.setTx.txId === setTx.txId) && map.delete(key)) { | ||
| nextTick(() => { value.watcher.emit('delete') }) | ||
| return true | ||
| } | ||
| return false | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| export type Store<V extends {}> = ReturnType<typeof inMemoryStore<V>> |
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