-
-
Save mistical2008/2d511405ca7e79393bf818bb080d8298 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import { createEffect, createEvent, createStore, restore } from "effector"; | |
| export const createWebSocketConnection = (url: string, retries = 5) => { | |
| const onEvent = createEvent<Event>(); | |
| const statusChanged = onEvent.map(({ type }) => type); | |
| const message = createEvent<MessageEvent>(); | |
| const send = createEffect(); | |
| const $status = restore(statusChanged.filter({ fn: (status) => status === "close" || status === "open" }), "close"); | |
| const error = onEvent.filter({fn: ({type}) => type === "error"}) | |
| const retry = createEffect(); | |
| const $retries = createStore(retries).on(retry, (s) => s - 1); | |
| const createInstance = () => { | |
| const instance = new WebSocket(url); | |
| statuses.forEach((key) => instance.addEventListener(key, onEvent)); | |
| send.use((data) => instance.send(JSON.stringify(data))); | |
| instance.addEventListener("message", message); | |
| instance.addEventListener("close", retry); | |
| return () => { | |
| statuses.forEach((key) => instance.removeEventListener(key, onEvent)); | |
| instance.removeEventListener("message", message); | |
| instance.removeEventListener("close", retry); | |
| }; | |
| }; | |
| let clearConnection = createInstance(); | |
| $retries.watch((remaining) => retry.use(remaining > 0 ? () => (clearConnection = createInstance()) : () => null)); | |
| retry.watch(clearConnection); | |
| return { $status, send, message, error }; | |
| }; | |
| const statuses: Array<keyof WebSocketEventMap> = ["close", "error", "open"]; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment