garrettmills
463076d182
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33 lines
849 B
TypeScript
33 lines
849 B
TypeScript
import { AsyncLocalStorage } from 'async_hooks'
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import {Request} from './lifecycle/Request'
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import {Singleton} from '../di'
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import {ErrorWithContext} from '../util'
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export class InvalidOutOfRequestAccessError extends ErrorWithContext {
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constructor() {
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super(`Attempted to access request via local storage outside of async lifecycle!`)
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}
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}
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@Singleton()
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export class RequestLocalStorage {
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protected readonly store: AsyncLocalStorage<Request> = new AsyncLocalStorage<Request>()
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get(): Request {
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const req = this.store.getStore()
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if ( !req ) {
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throw new InvalidOutOfRequestAccessError()
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}
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return req
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}
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has(): boolean {
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return Boolean(this.store.getStore())
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}
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run<T>(req: Request, closure: () => T): T {
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return this.store.run(req, closure)
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}
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}
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