614 lines
22 KiB
JavaScript
614 lines
22 KiB
JavaScript
import WebSocketFactory from './lib/websocket-factory';
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import { CHANNEL_EVENTS, CONNECTION_STATE, DEFAULT_VERSION, DEFAULT_TIMEOUT, DEFAULT_VSN, VSN_1_0_0, VSN_2_0_0, } from './lib/constants';
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import Serializer from './lib/serializer';
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import { httpEndpointURL } from './lib/transformers';
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import RealtimeChannel from './RealtimeChannel';
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import SocketAdapter from './phoenix/socketAdapter';
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// Connection-related constants
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const CONNECTION_TIMEOUTS = {
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HEARTBEAT_INTERVAL: 25000,
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RECONNECT_DELAY: 10,
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HEARTBEAT_TIMEOUT_FALLBACK: 100,
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};
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const RECONNECT_INTERVALS = [1000, 2000, 5000, 10000];
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const DEFAULT_RECONNECT_FALLBACK = 10000;
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const WORKER_SCRIPT = `
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addEventListener("message", (e) => {
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if (e.data.event === "start") {
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setInterval(() => postMessage({ event: "keepAlive" }), e.data.interval);
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}
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});`;
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export default class RealtimeClient {
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get endPoint() {
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return this.socketAdapter.endPoint;
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}
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get timeout() {
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return this.socketAdapter.timeout;
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}
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get transport() {
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return this.socketAdapter.transport;
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}
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get heartbeatCallback() {
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return this.socketAdapter.heartbeatCallback;
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}
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get heartbeatIntervalMs() {
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return this.socketAdapter.heartbeatIntervalMs;
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}
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get heartbeatTimer() {
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if (this.worker) {
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return this._workerHeartbeatTimer;
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}
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return this.socketAdapter.heartbeatTimer;
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}
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get pendingHeartbeatRef() {
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if (this.worker) {
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return this._pendingWorkerHeartbeatRef;
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}
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return this.socketAdapter.pendingHeartbeatRef;
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}
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get reconnectTimer() {
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return this.socketAdapter.reconnectTimer;
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}
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get vsn() {
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return this.socketAdapter.vsn;
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}
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get encode() {
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return this.socketAdapter.encode;
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}
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get decode() {
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return this.socketAdapter.decode;
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}
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get reconnectAfterMs() {
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return this.socketAdapter.reconnectAfterMs;
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}
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get sendBuffer() {
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return this.socketAdapter.sendBuffer;
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}
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get stateChangeCallbacks() {
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return this.socketAdapter.stateChangeCallbacks;
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}
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/**
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* Initializes the Socket.
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*
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* @param endPoint The string WebSocket endpoint, ie, "ws://example.com/socket", "wss://example.com", "/socket" (inherited host & protocol)
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* @param httpEndpoint The string HTTP endpoint, ie, "https://example.com", "/" (inherited host & protocol)
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* @param options.transport The Websocket Transport, for example WebSocket. This can be a custom implementation
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* @param options.timeout The default timeout in milliseconds to trigger push timeouts.
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* @param options.params The optional params to pass when connecting.
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* @param options.headers Deprecated: headers cannot be set on websocket connections and this option will be removed in the future.
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* @param options.heartbeatIntervalMs The millisec interval to send a heartbeat message.
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* @param options.heartbeatCallback The optional function to handle heartbeat status and latency.
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* @param options.logger The optional function for specialized logging, ie: logger: (kind, msg, data) => { console.log(`${kind}: ${msg}`, data) }
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* @param options.logLevel Sets the log level for Realtime
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* @param options.encode The function to encode outgoing messages. Defaults to JSON: (payload, callback) => callback(JSON.stringify(payload))
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* @param options.decode The function to decode incoming messages. Defaults to Serializer's decode.
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* @param options.reconnectAfterMs he optional function that returns the millsec reconnect interval. Defaults to stepped backoff off.
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* @param options.worker Use Web Worker to set a side flow. Defaults to false.
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* @param options.workerUrl The URL of the worker script. Defaults to https://realtime.supabase.com/worker.js that includes a heartbeat event call to keep the connection alive.
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* @param options.vsn The protocol version to use when connecting. Supported versions are "1.0.0" and "2.0.0". Defaults to "2.0.0".
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*
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* @category Realtime
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*
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* @example Example for a public channel
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* ```ts
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* import RealtimeClient from '@supabase/realtime-js'
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*
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* const client = new RealtimeClient('https://xyzcompany.supabase.co/realtime/v1', {
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* params: { apikey: 'public-anon-key' },
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* })
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* client.connect()
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* ```
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*/
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constructor(endPoint, options) {
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var _a;
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this.channels = new Array();
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this.accessTokenValue = null;
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this.accessToken = null;
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this.apiKey = null;
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this.httpEndpoint = '';
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/** @deprecated headers cannot be set on websocket connections */
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this.headers = {};
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this.params = {};
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this.ref = 0;
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this.serializer = new Serializer();
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this._manuallySetToken = false;
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this._authPromise = null;
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this._workerHeartbeatTimer = undefined;
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this._pendingWorkerHeartbeatRef = null;
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/**
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* Use either custom fetch, if provided, or default fetch to make HTTP requests
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*
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* @internal
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*/
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this._resolveFetch = (customFetch) => {
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if (customFetch) {
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return (...args) => customFetch(...args);
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}
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return (...args) => fetch(...args);
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};
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// Validate required parameters
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if (!((_a = options === null || options === void 0 ? void 0 : options.params) === null || _a === void 0 ? void 0 : _a.apikey)) {
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throw new Error('API key is required to connect to Realtime');
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}
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this.apiKey = options.params.apikey;
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const socketAdapterOptions = this._initializeOptions(options);
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this.socketAdapter = new SocketAdapter(endPoint, socketAdapterOptions);
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this.httpEndpoint = httpEndpointURL(endPoint);
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this.fetch = this._resolveFetch(options === null || options === void 0 ? void 0 : options.fetch);
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}
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/**
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* Connects the socket, unless already connected.
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*
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* @category Realtime
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*/
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connect() {
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// Skip if already connecting, disconnecting, or connected
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if (this.isConnecting() || this.isDisconnecting() || this.isConnected()) {
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return;
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}
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// Trigger auth if needed and not already in progress
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// This ensures auth is called for standalone RealtimeClient usage
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// while avoiding race conditions with SupabaseClient's immediate setAuth call
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if (this.accessToken && !this._authPromise) {
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this._setAuthSafely('connect');
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}
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this._setupConnectionHandlers();
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try {
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this.socketAdapter.connect();
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}
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catch (error) {
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const errorMessage = error.message;
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// Provide helpful error message based on environment
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if (errorMessage.includes('Node.js')) {
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throw new Error(`${errorMessage}\n\n` +
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'To use Realtime in Node.js, you need to provide a WebSocket implementation:\n\n' +
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'Option 1: Use Node.js 22+ which has native WebSocket support\n' +
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'Option 2: Install and provide the "ws" package:\n\n' +
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' npm install ws\n\n' +
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' import ws from "ws"\n' +
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' const client = new RealtimeClient(url, {\n' +
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' ...options,\n' +
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' transport: ws\n' +
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' })');
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}
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throw new Error(`WebSocket not available: ${errorMessage}`);
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}
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this._handleNodeJsRaceCondition();
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}
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/**
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* Returns the URL of the websocket.
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* @returns string The URL of the websocket.
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*
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* @category Realtime
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*/
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endpointURL() {
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return this.socketAdapter.endPointURL();
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}
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/**
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* Disconnects the socket.
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*
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* @param code A numeric status code to send on disconnect.
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* @param reason A custom reason for the disconnect.
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*
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* @category Realtime
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*/
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async disconnect(code, reason) {
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if (this.isDisconnecting()) {
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return 'ok';
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}
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return await this.socketAdapter.disconnect(() => {
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clearInterval(this._workerHeartbeatTimer);
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this._terminateWorker();
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}, code, reason);
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}
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/**
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* Returns all created channels
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*
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* @category Realtime
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*/
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getChannels() {
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return this.channels;
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}
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/**
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* Unsubscribes, removes and tears down a single channel
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* @param channel A RealtimeChannel instance
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*
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* @category Realtime
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*/
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async removeChannel(channel) {
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const status = await channel.unsubscribe();
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if (status === 'ok') {
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channel.teardown();
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}
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if (this.channels.length === 0) {
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this.disconnect();
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}
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return status;
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}
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/**
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* Unsubscribes, removes and tears down all channels
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*
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* @category Realtime
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*/
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async removeAllChannels() {
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const promises = this.channels.map(async (channel) => {
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const result = await channel.unsubscribe();
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channel.teardown();
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return result;
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});
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const result = await Promise.all(promises);
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this.disconnect();
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return result;
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}
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/**
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* Logs the message.
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*
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* For customized logging, `this.logger` can be overridden in Client constructor.
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*
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* @category Realtime
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*/
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log(kind, msg, data) {
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this.socketAdapter.log(kind, msg, data);
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}
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/**
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* Returns the current state of the socket.
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*
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* @category Realtime
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*/
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connectionState() {
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return this.socketAdapter.connectionState() || CONNECTION_STATE.closed;
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}
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/**
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* Returns `true` is the connection is open.
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*
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* @category Realtime
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*/
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isConnected() {
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return this.socketAdapter.isConnected();
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}
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/**
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* Returns `true` if the connection is currently connecting.
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*
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* @category Realtime
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*/
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isConnecting() {
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return this.socketAdapter.isConnecting();
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}
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/**
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* Returns `true` if the connection is currently disconnecting.
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*
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* @category Realtime
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*/
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isDisconnecting() {
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return this.socketAdapter.isDisconnecting();
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}
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/**
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* Creates (or reuses) a {@link RealtimeChannel} for the provided topic.
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*
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* Topics are automatically prefixed with `realtime:` to match the Realtime service.
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* If a channel with the same topic already exists it will be returned instead of creating
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* a duplicate connection.
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*
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* @category Realtime
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*/
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channel(topic, params = { config: {} }) {
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const realtimeTopic = `realtime:${topic}`;
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const exists = this.getChannels().find((c) => c.topic === realtimeTopic);
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if (!exists) {
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const chan = new RealtimeChannel(`realtime:${topic}`, params, this);
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this.channels.push(chan);
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return chan;
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}
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else {
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return exists;
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}
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}
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/**
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* Push out a message if the socket is connected.
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*
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* If the socket is not connected, the message gets enqueued within a local buffer, and sent out when a connection is next established.
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*
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* @category Realtime
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*/
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push(data) {
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this.socketAdapter.push(data);
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}
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/**
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* Sets the JWT access token used for channel subscription authorization and Realtime RLS.
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*
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* If param is null it will use the `accessToken` callback function or the token set on the client.
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*
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* On callback used, it will set the value of the token internal to the client.
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*
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* When a token is explicitly provided, it will be preserved across channel operations
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* (including removeChannel and resubscribe). The `accessToken` callback will not be
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* invoked until `setAuth()` is called without arguments.
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*
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* @param token A JWT string to override the token set on the client.
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*
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* @example Setting the authorization header
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* // Use a manual token (preserved across resubscribes, ignores accessToken callback)
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* client.realtime.setAuth('my-custom-jwt')
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*
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* // Switch back to using the accessToken callback
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* client.realtime.setAuth()
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*
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* @category Realtime
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*/
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async setAuth(token = null) {
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this._authPromise = this._performAuth(token);
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try {
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await this._authPromise;
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}
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finally {
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this._authPromise = null;
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}
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}
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/**
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* Returns true if the current access token was explicitly set via setAuth(token),
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* false if it was obtained via the accessToken callback.
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* @internal
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*/
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_isManualToken() {
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return this._manuallySetToken;
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}
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/**
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* Sends a heartbeat message if the socket is connected.
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*
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* @category Realtime
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*/
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async sendHeartbeat() {
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this.socketAdapter.sendHeartbeat();
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}
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/**
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* Sets a callback that receives lifecycle events for internal heartbeat messages.
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* Useful for instrumenting connection health (e.g. sent/ok/timeout/disconnected).
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*
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* @category Realtime
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*/
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onHeartbeat(callback) {
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this.socketAdapter.heartbeatCallback = this._wrapHeartbeatCallback(callback);
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}
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/**
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* Return the next message ref, accounting for overflows
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*
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* @internal
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*/
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_makeRef() {
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return this.socketAdapter.makeRef();
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}
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/**
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* Removes a channel from RealtimeClient
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*
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* @param channel An open subscription.
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*
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* @internal
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*/
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_remove(channel) {
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this.channels = this.channels.filter((c) => c.topic !== channel.topic);
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}
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/**
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* Perform the actual auth operation
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* @internal
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*/
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async _performAuth(token = null) {
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let tokenToSend;
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let isManualToken = false;
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if (token) {
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tokenToSend = token;
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// Track if this is a manually-provided token
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isManualToken = true;
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}
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else if (this.accessToken) {
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// Call the accessToken callback to get fresh token
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try {
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tokenToSend = await this.accessToken();
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}
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catch (e) {
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this.log('error', 'Error fetching access token from callback', e);
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// Fall back to cached value if callback fails
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tokenToSend = this.accessTokenValue;
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}
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}
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else {
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tokenToSend = this.accessTokenValue;
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}
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// Track whether this token was manually set or fetched via callback
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if (isManualToken) {
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this._manuallySetToken = true;
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}
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else if (this.accessToken) {
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// If we used the callback, clear the manual flag
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this._manuallySetToken = false;
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}
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if (this.accessTokenValue != tokenToSend) {
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this.accessTokenValue = tokenToSend;
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this.channels.forEach((channel) => {
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const payload = {
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access_token: tokenToSend,
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version: DEFAULT_VERSION,
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};
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tokenToSend && channel.updateJoinPayload(payload);
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if (channel.joinedOnce && channel.channelAdapter.isJoined()) {
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channel.channelAdapter.push(CHANNEL_EVENTS.access_token, {
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access_token: tokenToSend,
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});
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}
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});
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}
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}
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/**
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* Wait for any in-flight auth operations to complete
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* @internal
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*/
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async _waitForAuthIfNeeded() {
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if (this._authPromise) {
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await this._authPromise;
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}
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}
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/**
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* Safely call setAuth with standardized error handling
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* @internal
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*/
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_setAuthSafely(context = 'general') {
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// Only refresh auth if using callback-based tokens
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if (!this._isManualToken()) {
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this.setAuth().catch((e) => {
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this.log('error', `Error setting auth in ${context}`, e);
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});
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}
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}
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/** @internal */
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_setupConnectionHandlers() {
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this.socketAdapter.onOpen(() => {
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const authPromise = this._authPromise ||
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(this.accessToken && !this.accessTokenValue ? this.setAuth() : Promise.resolve());
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authPromise.catch((e) => {
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this.log('error', 'error waiting for auth on connect', e);
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});
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if (this.worker && !this.workerRef) {
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this._startWorkerHeartbeat();
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}
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});
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this.socketAdapter.onClose(() => {
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if (this.worker && this.workerRef) {
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this._terminateWorker();
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}
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});
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this.socketAdapter.onMessage((message) => {
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if (message.ref && message.ref === this._pendingWorkerHeartbeatRef) {
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this._pendingWorkerHeartbeatRef = null;
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}
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});
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}
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/** @internal */
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_handleNodeJsRaceCondition() {
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if (this.socketAdapter.isConnected()) {
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// hack: ensure onConnOpen is called
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this.socketAdapter.getSocket().onConnOpen();
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}
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}
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/** @internal */
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_wrapHeartbeatCallback(heartbeatCallback) {
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return (status, latency) => {
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if (status == 'sent')
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this._setAuthSafely();
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if (heartbeatCallback)
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heartbeatCallback(status, latency);
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};
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}
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/** @internal */
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_startWorkerHeartbeat() {
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if (this.workerUrl) {
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this.log('worker', `starting worker for from ${this.workerUrl}`);
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}
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else {
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this.log('worker', `starting default worker`);
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}
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const objectUrl = this._workerObjectUrl(this.workerUrl);
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this.workerRef = new Worker(objectUrl);
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this.workerRef.onerror = (error) => {
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this.log('worker', 'worker error', error.message);
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this._terminateWorker();
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this.disconnect();
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};
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this.workerRef.onmessage = (event) => {
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if (event.data.event === 'keepAlive') {
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this.sendHeartbeat();
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}
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};
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this.workerRef.postMessage({
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event: 'start',
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interval: this.heartbeatIntervalMs,
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});
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}
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/**
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* Terminate the Web Worker and clear the reference
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* @internal
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*/
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_terminateWorker() {
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if (this.workerRef) {
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this.log('worker', 'terminating worker');
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this.workerRef.terminate();
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this.workerRef = undefined;
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}
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}
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/** @internal */
|
|
_workerObjectUrl(url) {
|
|
let result_url;
|
|
if (url) {
|
|
result_url = url;
|
|
}
|
|
else {
|
|
const blob = new Blob([WORKER_SCRIPT], { type: 'application/javascript' });
|
|
result_url = URL.createObjectURL(blob);
|
|
}
|
|
return result_url;
|
|
}
|
|
/**
|
|
* Initialize socket options with defaults
|
|
* @internal
|
|
*/
|
|
_initializeOptions(options) {
|
|
var _a, _b, _c, _d, _e, _f, _g, _h, _j;
|
|
this.worker = (_a = options === null || options === void 0 ? void 0 : options.worker) !== null && _a !== void 0 ? _a : false;
|
|
this.accessToken = (_b = options === null || options === void 0 ? void 0 : options.accessToken) !== null && _b !== void 0 ? _b : null;
|
|
const result = {};
|
|
result.timeout = (_c = options === null || options === void 0 ? void 0 : options.timeout) !== null && _c !== void 0 ? _c : DEFAULT_TIMEOUT;
|
|
result.heartbeatIntervalMs =
|
|
(_d = options === null || options === void 0 ? void 0 : options.heartbeatIntervalMs) !== null && _d !== void 0 ? _d : CONNECTION_TIMEOUTS.HEARTBEAT_INTERVAL;
|
|
// @ts-ignore - mismatch between phoenix and supabase
|
|
result.transport = (_e = options === null || options === void 0 ? void 0 : options.transport) !== null && _e !== void 0 ? _e : WebSocketFactory.getWebSocketConstructor();
|
|
result.params = options === null || options === void 0 ? void 0 : options.params;
|
|
result.logger = options === null || options === void 0 ? void 0 : options.logger;
|
|
result.heartbeatCallback = this._wrapHeartbeatCallback(options === null || options === void 0 ? void 0 : options.heartbeatCallback);
|
|
result.reconnectAfterMs =
|
|
(_f = options === null || options === void 0 ? void 0 : options.reconnectAfterMs) !== null && _f !== void 0 ? _f : ((tries) => {
|
|
return RECONNECT_INTERVALS[tries - 1] || DEFAULT_RECONNECT_FALLBACK;
|
|
});
|
|
let defaultEncode;
|
|
let defaultDecode;
|
|
const vsn = (_g = options === null || options === void 0 ? void 0 : options.vsn) !== null && _g !== void 0 ? _g : DEFAULT_VSN;
|
|
switch (vsn) {
|
|
case VSN_1_0_0:
|
|
defaultEncode = (payload, callback) => {
|
|
return callback(JSON.stringify(payload));
|
|
};
|
|
defaultDecode = (payload, callback) => {
|
|
return callback(JSON.parse(payload));
|
|
};
|
|
break;
|
|
case VSN_2_0_0:
|
|
defaultEncode = this.serializer.encode.bind(this.serializer);
|
|
defaultDecode = this.serializer.decode.bind(this.serializer);
|
|
break;
|
|
default:
|
|
throw new Error(`Unsupported serializer version: ${result.vsn}`);
|
|
}
|
|
result.vsn = vsn;
|
|
result.encode = (_h = options === null || options === void 0 ? void 0 : options.encode) !== null && _h !== void 0 ? _h : defaultEncode;
|
|
result.decode = (_j = options === null || options === void 0 ? void 0 : options.decode) !== null && _j !== void 0 ? _j : defaultDecode;
|
|
result.beforeReconnect = this._reconnectAuth.bind(this);
|
|
if ((options === null || options === void 0 ? void 0 : options.logLevel) || (options === null || options === void 0 ? void 0 : options.log_level)) {
|
|
this.logLevel = options.logLevel || options.log_level;
|
|
result.params = Object.assign(Object.assign({}, result.params), { log_level: this.logLevel });
|
|
}
|
|
// Handle worker setup
|
|
if (this.worker) {
|
|
if (typeof window !== 'undefined' && !window.Worker) {
|
|
throw new Error('Web Worker is not supported');
|
|
}
|
|
this.workerUrl = options === null || options === void 0 ? void 0 : options.workerUrl;
|
|
result.autoSendHeartbeat = !this.worker;
|
|
}
|
|
return result;
|
|
}
|
|
/** @internal */
|
|
async _reconnectAuth() {
|
|
await this._waitForAuthIfNeeded();
|
|
if (!this.isConnected()) {
|
|
this.connect();
|
|
}
|
|
}
|
|
}
|
|
//# sourceMappingURL=RealtimeClient.js.map
|