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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| import {defer} from "@virtualstate/promise"; | ||
| import {isLike, isPromise, isSignalled, ok} from "../is"; | ||
| import { | ||
| DurableBody, | ||
| DurableEventData, | ||
| DurableRequest, | ||
| fromDurableRequest, | ||
| fromRequestResponse, | ||
| setDurableRequestForEvent | ||
| } from "../data"; | ||
| import {dispatcher} from "../events/schedule/schedule"; | ||
| import {v4} from "uuid"; | ||
| import {caches} from "./cache"; | ||
| import {dispatchEvent} from "../events"; | ||
| import {getConfig} from "../config"; | ||
| import {DurableFetchEventCache, DurableFetchEventData, FETCH} from "./events"; | ||
|
|
||
| export function isDurableFetchEventCache(value: unknown): value is DurableFetchEventCache { | ||
| return !!( | ||
| isLike<DurableFetchEventCache>(value) && | ||
| typeof value.name === "string" | ||
| ); | ||
| } | ||
|
|
||
| export function createRespondWith() { | ||
| const { promise: handled, resolve, reject } = defer<Response>(); | ||
|
|
||
| function respondWith(response: Response | Promise<Response>) { | ||
| if (isPromise(response)) { | ||
| return response.then(resolve, reject); | ||
| } | ||
| return resolve(response); | ||
| } | ||
|
|
||
| return { | ||
| handled, | ||
| respondWith | ||
| } | ||
| } | ||
|
|
||
| export function createWaitUntil() { | ||
| let promises: Promise<unknown>[] = []; | ||
|
|
||
| function waitUntil(promise: Promise<unknown>) { | ||
| promises.push( | ||
| promise.catch(error => void error) | ||
| ); | ||
| } | ||
|
|
||
| async function wait(): Promise<void> { | ||
| if (!promises.length) { | ||
| return; | ||
| } | ||
| const current = promises; | ||
| promises = []; | ||
| await Promise.all(current); | ||
| return wait(); | ||
| } | ||
|
|
||
| return { | ||
| wait, | ||
| waitUntil | ||
| } | ||
| } | ||
|
|
||
|
|
||
| function isDurableFetchEventData(event?: DurableEventData): event is DurableFetchEventData { | ||
| return !!( | ||
| isLike<DurableFetchEventData>(event) && | ||
| event.type === FETCH && | ||
| event.request && | ||
| event.request.url | ||
| ); | ||
| } | ||
|
|
||
| export const removeFetchDispatcherFunction = dispatcher(FETCH, async (event, dispatch) => { | ||
| const { signal, controller } = getSignal(); | ||
| ok(isDurableFetchEventData(event)); | ||
| const { | ||
| handled, | ||
| respondWith | ||
| } = createRespondWith(); | ||
| const { | ||
| wait, | ||
| waitUntil | ||
| } = createWaitUntil(); | ||
| const request = await fromDurableRequest(event.request); | ||
| try { | ||
| await dispatch({ | ||
| ...event, | ||
| signal, | ||
| request, | ||
| handled, | ||
| respondWith, | ||
| waitUntil | ||
| }); | ||
| const response = await handled; | ||
| let durableEventDispatch: DurableEventData; | ||
| if (event.dispatch) { | ||
| durableEventDispatch = { | ||
| durableEventId: v4(), | ||
| ...event.dispatch | ||
| }; | ||
| } | ||
| const isRetain = durableEventDispatch || (event.durableEventId && event.retain !== false); | ||
| let body: DurableBody; | ||
| const givenCache = typeof event.cache === "string" ? { name: event.cache } : isDurableFetchEventCache(event.cache) ? event.cache : undefined; | ||
| const cache = givenCache ?? (isRetain ? { name: FETCH } : undefined); | ||
| if (cache) { | ||
| const { name, always } = cache; | ||
| if (response.ok || always) { | ||
| const store = await caches.open(name); | ||
| await store.put(request, response); | ||
| body = { | ||
| type: "cache", | ||
| value: name, | ||
| url: request.url | ||
| }; | ||
| } | ||
| } | ||
| let durableRequest: DurableRequest; | ||
| if (isRetain) { | ||
| const durableRequestData = await fromRequestResponse(request, response, { | ||
| body | ||
| }); | ||
| durableRequest = await setDurableRequestForEvent(durableRequestData, durableEventDispatch || event); | ||
| if (durableEventDispatch) { | ||
| const { response, ...request } = durableRequest; | ||
| await dispatchEvent({ | ||
| ...durableEventDispatch, | ||
| request, | ||
| response | ||
| }); | ||
| } | ||
| } | ||
| const { response: givenFns } = getConfig(); | ||
| const responseFns = Array.isArray(givenFns) ? givenFns : (givenFns ? [givenFns] : []); | ||
| if (responseFns.length) { | ||
| await Promise.all( | ||
| responseFns.map(async (fn) => fn(response.clone(), request, durableRequest)) | ||
| ); | ||
| } | ||
| } catch (error) { | ||
| if (!signal.aborted) { | ||
| controller?.abort(error); | ||
| } | ||
| } finally { | ||
| if (!signal.aborted) { | ||
| controller?.abort(); | ||
| } | ||
| await wait(); | ||
| } | ||
|
|
||
| function getSignal() { | ||
| if (isSignalled(event)) { | ||
| return { signal: event.signal, controller: undefined } as const; | ||
| } | ||
| const controller = new AbortController(); | ||
| return { | ||
| signal: controller.signal, | ||
| controller | ||
| } as const; | ||
| } | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,3 @@ | ||
| export * from "./events"; | ||
| export * from "./cache"; | ||
| export * from "./cache"; | ||
| export * from "./dispatch"; |
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