Add support for managing multiple stream subscriptions in a single connection (#14524)
This commit is contained in:
Eugen Rochko
GitHub
parent
decc5b9a78
commit
ef057584fd
3 changed files with 817 additions and 324 deletions
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@ -1,3 +1,5 @@
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// @ts-check
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import { connectStream } from '../stream';
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import {
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updateTimeline,
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@ -19,24 +21,59 @@ import { getLocale } from '../locales';
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const { messages } = getLocale();
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export function connectTimelineStream (timelineId, path, pollingRefresh = null, accept = null) {
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/**
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* @param {number} max
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* @return {number}
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*/
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const randomUpTo = max =>
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Math.floor(Math.random() * Math.floor(max));
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return connectStream (path, pollingRefresh, (dispatch, getState) => {
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/**
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* @param {string} timelineId
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* @param {string} channelName
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* @param {Object.<string, string>} params
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* @param {Object} options
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* @param {function(Function, Function): void} [options.fallback]
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* @param {function(object): boolean} [options.accept]
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* @return {function(): void}
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*/
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export const connectTimelineStream = (timelineId, channelName, params = {}, options = {}) =>
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connectStream(channelName, params, (dispatch, getState) => {
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const locale = getState().getIn(['meta', 'locale']);
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let pollingId;
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/**
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* @param {function(Function, Function): void} fallback
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*/
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const useFallback = fallback => {
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fallback(dispatch, () => {
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pollingId = setTimeout(() => useFallback(fallback), 20000 + randomUpTo(20000));
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});
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};
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return {
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onConnect() {
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dispatch(connectTimeline(timelineId));
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if (pollingId) {
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clearTimeout(pollingId);
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pollingId = null;
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}
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},
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onDisconnect() {
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dispatch(disconnectTimeline(timelineId));
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if (options.fallback) {
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pollingId = setTimeout(() => useFallback(options.fallback), randomUpTo(40000));
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}
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},
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onReceive (data) {
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switch(data.event) {
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case 'update':
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dispatch(updateTimeline(timelineId, JSON.parse(data.payload), accept));
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dispatch(updateTimeline(timelineId, JSON.parse(data.payload), options.accept));
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break;
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case 'delete':
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dispatch(deleteFromTimelines(data.payload));
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@ -63,17 +100,59 @@ export function connectTimelineStream (timelineId, path, pollingRefresh = null,
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},
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};
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});
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}
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/**
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* @param {Function} dispatch
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* @param {function(): void} done
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*/
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const refreshHomeTimelineAndNotification = (dispatch, done) => {
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dispatch(expandHomeTimeline({}, () =>
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dispatch(expandNotifications({}, () =>
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dispatch(fetchAnnouncements(done))))));
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};
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export const connectUserStream = () => connectTimelineStream('home', 'user', refreshHomeTimelineAndNotification);
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export const connectCommunityStream = ({ onlyMedia } = {}) => connectTimelineStream(`community${onlyMedia ? ':media' : ''}`, `public:local${onlyMedia ? ':media' : ''}`);
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export const connectPublicStream = ({ onlyMedia, onlyRemote } = {}) => connectTimelineStream(`public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`, `public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`);
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export const connectHashtagStream = (id, tag, local, accept) => connectTimelineStream(`hashtag:${id}${local ? ':local' : ''}`, `hashtag${local ? ':local' : ''}&tag=${tag}`, null, accept);
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export const connectDirectStream = () => connectTimelineStream('direct', 'direct');
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export const connectListStream = id => connectTimelineStream(`list:${id}`, `list&list=${id}`);
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/**
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* @return {function(): void}
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*/
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export const connectUserStream = () =>
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connectTimelineStream('home', 'user', {}, { fallback: refreshHomeTimelineAndNotification });
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/**
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* @param {Object} options
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* @param {boolean} [options.onlyMedia]
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* @return {function(): void}
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*/
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export const connectCommunityStream = ({ onlyMedia } = {}) =>
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connectTimelineStream(`community${onlyMedia ? ':media' : ''}`, `public:local${onlyMedia ? ':media' : ''}`);
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/**
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* @param {Object} options
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* @param {boolean} [options.onlyMedia]
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* @param {boolean} [options.onlyRemote]
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* @return {function(): void}
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*/
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export const connectPublicStream = ({ onlyMedia, onlyRemote } = {}) =>
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connectTimelineStream(`public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`, `public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`);
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/**
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* @param {string} columnId
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* @param {string} tagName
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* @param {boolean} onlyLocal
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* @param {function(object): boolean} accept
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* @return {function(): void}
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*/
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export const connectHashtagStream = (columnId, tagName, onlyLocal, accept) =>
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connectTimelineStream(`hashtag:${columnId}${onlyLocal ? ':local' : ''}`, `hashtag${onlyLocal ? ':local' : ''}`, { tag: tagName }, { accept });
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/**
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* @return {function(): void}
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*/
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export const connectDirectStream = () =>
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connectTimelineStream('direct', 'direct');
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/**
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* @param {string} listId
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* @return {function(): void}
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*/
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export const connectListStream = listId =>
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connectTimelineStream(`list:${listId}`, 'list', { list: listId });
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@ -1,87 +1,236 @@
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// @ts-check
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import WebSocketClient from '@gamestdio/websocket';
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const randomIntUpTo = max => Math.floor(Math.random() * Math.floor(max));
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/**
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* @type {WebSocketClient | undefined}
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*/
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let sharedConnection;
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const knownEventTypes = [
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'update',
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'delete',
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'notification',
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'conversation',
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'filters_changed',
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];
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/**
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* @typedef Subscription
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* @property {string} channelName
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* @property {Object.<string, string>} params
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* @property {function(): void} onConnect
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* @property {function(StreamEvent): void} onReceive
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* @property {function(): void} onDisconnect
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*/
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export function connectStream(path, pollingRefresh = null, callbacks = () => ({ onConnect() {}, onDisconnect() {}, onReceive() {} })) {
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return (dispatch, getState) => {
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const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
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const accessToken = getState().getIn(['meta', 'access_token']);
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const { onConnect, onDisconnect, onReceive } = callbacks(dispatch, getState);
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/**
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* @typedef StreamEvent
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* @property {string} event
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* @property {object} payload
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*/
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let polling = null;
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/**
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* @type {Array.<Subscription>}
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*/
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const subscriptions = [];
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const setupPolling = () => {
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pollingRefresh(dispatch, () => {
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polling = setTimeout(() => setupPolling(), 20000 + randomIntUpTo(20000));
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});
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};
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/**
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* @type {Object.<string, number>}
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*/
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const subscriptionCounters = {};
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const clearPolling = () => {
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if (polling) {
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clearTimeout(polling);
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polling = null;
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/**
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* @param {Subscription} subscription
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*/
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const addSubscription = subscription => {
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subscriptions.push(subscription);
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};
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/**
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* @param {Subscription} subscription
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*/
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const removeSubscription = subscription => {
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const index = subscriptions.indexOf(subscription);
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if (index !== -1) {
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subscriptions.splice(index, 1);
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}
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};
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/**
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* @param {Subscription} subscription
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*/
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const subscribe = ({ channelName, params, onConnect }) => {
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const key = channelNameWithInlineParams(channelName, params);
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subscriptionCounters[key] = subscriptionCounters[key] || 0;
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if (subscriptionCounters[key] === 0) {
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sharedConnection.send(JSON.stringify({ type: 'subscribe', stream: channelName, ...params }));
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}
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subscriptionCounters[key] += 1;
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onConnect();
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};
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/**
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* @param {Subscription} subscription
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*/
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const unsubscribe = ({ channelName, params, onDisconnect }) => {
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const key = channelNameWithInlineParams(channelName, params);
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subscriptionCounters[key] = subscriptionCounters[key] || 1;
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if (subscriptionCounters[key] === 1 && sharedConnection.readyState === WebSocketClient.OPEN) {
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sharedConnection.send(JSON.stringify({ type: 'unsubscribe', stream: channelName, ...params }));
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}
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subscriptionCounters[key] -= 1;
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onDisconnect();
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};
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const sharedCallbacks = {
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connected () {
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subscriptions.forEach(subscription => subscribe(subscription));
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},
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received (data) {
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const { stream } = data;
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subscriptions.filter(({ channelName, params }) => {
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const streamChannelName = stream[0];
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if (stream.length === 1) {
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return channelName === streamChannelName;
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}
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};
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const subscription = getStream(streamingAPIBaseURL, accessToken, path, {
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const streamIdentifier = stream[1];
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if (['hashtag', 'hashtag:local'].includes(channelName)) {
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return channelName === streamChannelName && params.tag === streamIdentifier;
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} else if (channelName === 'list') {
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return channelName === streamChannelName && params.list === streamIdentifier;
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}
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return false;
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}).forEach(subscription => {
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subscription.onReceive(data);
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});
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},
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disconnected () {
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subscriptions.forEach(({ onDisconnect }) => onDisconnect());
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},
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reconnected () {
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subscriptions.forEach(subscription => subscribe(subscription));
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},
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};
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/**
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* @param {string} channelName
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* @param {Object.<string, string>} params
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* @return {string}
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*/
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const channelNameWithInlineParams = (channelName, params) => {
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if (Object.keys(params).length === 0) {
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return channelName;
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}
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return `${channelName}&${Object.keys(params).map(key => `${key}=${params[key]}`).join('&')}`;
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};
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/**
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* @param {string} channelName
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* @param {Object.<string, string>} params
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* @param {function(Function, Function): { onConnect: (function(): void), onReceive: (function(StreamEvent): void), onDisconnect: (function(): void) }} callbacks
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* @return {function(): void}
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*/
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export const connectStream = (channelName, params, callbacks) => (dispatch, getState) => {
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const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
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const accessToken = getState().getIn(['meta', 'access_token']);
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const { onConnect, onReceive, onDisconnect } = callbacks(dispatch, getState);
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// If we cannot use a websockets connection, we must fall back
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// to using individual connections for each channel
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if (!streamingAPIBaseURL.startsWith('ws')) {
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const connection = createConnection(streamingAPIBaseURL, accessToken, channelNameWithInlineParams(channelName, params), {
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connected () {
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if (pollingRefresh) {
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clearPolling();
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}
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onConnect();
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},
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disconnected () {
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if (pollingRefresh) {
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polling = setTimeout(() => setupPolling(), randomIntUpTo(40000));
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}
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onDisconnect();
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},
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received (data) {
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onReceive(data);
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},
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reconnected () {
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if (pollingRefresh) {
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clearPolling();
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pollingRefresh(dispatch);
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}
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onConnect();
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disconnected () {
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onDisconnect();
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},
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reconnected () {
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onConnect();
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},
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});
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const disconnect = () => {
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if (subscription) {
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subscription.close();
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}
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clearPolling();
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return () => {
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connection.close();
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};
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}
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return disconnect;
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const subscription = {
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channelName,
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params,
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onConnect,
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onReceive,
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onDisconnect,
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};
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}
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addSubscription(subscription);
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export default function getStream(streamingAPIBaseURL, accessToken, stream, { connected, received, disconnected, reconnected }) {
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const params = stream.split('&');
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stream = params.shift();
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// If a connection is open, we can execute the subscription right now. Otherwise,
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// because we have already registered it, it will be executed on connect
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if (!sharedConnection) {
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sharedConnection = /** @type {WebSocketClient} */ (createConnection(streamingAPIBaseURL, accessToken, '', sharedCallbacks));
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} else if (sharedConnection.readyState === WebSocketClient.OPEN) {
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subscribe(subscription);
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}
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return () => {
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removeSubscription(subscription);
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unsubscribe(subscription);
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};
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};
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const KNOWN_EVENT_TYPES = [
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'update',
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'delete',
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'notification',
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'conversation',
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'filters_changed',
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'encrypted_message',
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'announcement',
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'announcement.delete',
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'announcement.reaction',
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];
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/**
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* @param {MessageEvent} e
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* @param {function(StreamEvent): void} received
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*/
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const handleEventSourceMessage = (e, received) => {
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received({
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event: e.type,
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payload: e.data,
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});
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};
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/**
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* @param {string} streamingAPIBaseURL
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* @param {string} accessToken
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* @param {string} channelName
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* @param {{ connected: Function, received: function(StreamEvent): void, disconnected: Function, reconnected: Function }} callbacks
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* @return {WebSocketClient | EventSource}
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*/
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const createConnection = (streamingAPIBaseURL, accessToken, channelName, { connected, received, disconnected, reconnected }) => {
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const params = channelName.split('&');
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channelName = params.shift();
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if (streamingAPIBaseURL.startsWith('ws')) {
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params.unshift(`stream=${stream}`);
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const ws = new WebSocketClient(`${streamingAPIBaseURL}/api/v1/streaming/?${params.join('&')}`, accessToken);
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ws.onopen = connected;
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@ -92,11 +241,19 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
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return ws;
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}
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stream = stream.replace(/:/g, '/');
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channelName = channelName.replace(/:/g, '/');
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if (channelName.endsWith(':media')) {
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channelName = channelName.replace('/media', '');
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params.push('only_media=true');
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}
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params.push(`access_token=${accessToken}`);
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const es = new EventSource(`${streamingAPIBaseURL}/api/v1/streaming/${stream}?${params.join('&')}`);
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const es = new EventSource(`${streamingAPIBaseURL}/api/v1/streaming/${channelName}?${params.join('&')}`);
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let firstConnect = true;
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es.onopen = () => {
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if (firstConnect) {
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firstConnect = false;
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@ -105,15 +262,12 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
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reconnected();
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}
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};
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for (let type of knownEventTypes) {
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es.addEventListener(type, (e) => {
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received({
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event: e.type,
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payload: e.data,
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});
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});
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}
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es.onerror = disconnected;
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KNOWN_EVENT_TYPES.forEach(type => {
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es.addEventListener(type, e => handleEventSourceMessage(/** @type {MessageEvent} */ (e), received));
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});
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es.onerror = /** @type {function(): void} */ (disconnected);
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return es;
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};
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@ -1,3 +1,5 @@
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// @ts-check
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const os = require('os');
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const throng = require('throng');
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const dotenv = require('dotenv');
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@ -12,7 +14,7 @@ const uuid = require('uuid');
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const fs = require('fs');
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const env = process.env.NODE_ENV || 'development';
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const alwaysRequireAuth = process.env.WHITELIST_MODE === 'true' || process.env.AUTHORIZED_FETCH === 'true';
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const alwaysRequireAuth = process.env.LIMITED_FEDERATION_MODE === 'true' || process.env.WHITELIST_MODE === 'true' || process.env.AUTHORIZED_FETCH === 'true';
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dotenv.config({
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path: env === 'production' ? '.env.production' : '.env',
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@ -20,6 +22,10 @@ dotenv.config({
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log.level = process.env.LOG_LEVEL || 'verbose';
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/**
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* @param {string} dbUrl
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* @return {Object.<string, any>}
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*/
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const dbUrlToConfig = (dbUrl) => {
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if (!dbUrl) {
|
||||
return {};
|
||||
|
|
@ -53,6 +59,10 @@ const dbUrlToConfig = (dbUrl) => {
|
|||
return config;
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {Object.<string, any>} defaultConfig
|
||||
* @param {string} redisUrl
|
||||
*/
|
||||
const redisUrlToClient = (defaultConfig, redisUrl) => {
|
||||
const config = defaultConfig;
|
||||
|
||||
|
|
@ -108,6 +118,7 @@ const startWorker = (workerId) => {
|
|||
}
|
||||
|
||||
const app = express();
|
||||
|
||||
app.set('trusted proxy', process.env.TRUSTED_PROXY_IP || 'loopback,uniquelocal');
|
||||
|
||||
const pgPool = new pg.Pool(Object.assign(pgConfigs[env], dbUrlToConfig(process.env.DATABASE_URL)));
|
||||
|
|
@ -130,6 +141,9 @@ const startWorker = (workerId) => {
|
|||
const redisSubscribeClient = redisUrlToClient(redisParams, process.env.REDIS_URL);
|
||||
const redisClient = redisUrlToClient(redisParams, process.env.REDIS_URL);
|
||||
|
||||
/**
|
||||
* @type {Object.<string, Array.<function(string): void>>}
|
||||
*/
|
||||
const subs = {};
|
||||
|
||||
redisSubscribeClient.on('message', (channel, message) => {
|
||||
|
|
@ -144,11 +158,11 @@ const startWorker = (workerId) => {
|
|||
callbacks.forEach(callback => callback(message));
|
||||
});
|
||||
|
||||
/**
|
||||
* @param {string[]} channels
|
||||
* @return {function(): void}
|
||||
*/
|
||||
const subscriptionHeartbeat = channels => {
|
||||
if (!Array.isArray(channels)) {
|
||||
channels = [channels];
|
||||
}
|
||||
|
||||
const interval = 6 * 60;
|
||||
|
||||
const tellSubscribed = () => {
|
||||
|
|
@ -164,25 +178,65 @@ const startWorker = (workerId) => {
|
|||
};
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {string} channel
|
||||
* @param {function(string): void} callback
|
||||
*/
|
||||
const subscribe = (channel, callback) => {
|
||||
log.silly(`Adding listener for ${channel}`);
|
||||
subs[channel] = subs[channel] || [];
|
||||
|
||||
if (subs[channel].length === 0) {
|
||||
log.verbose(`Subscribe ${channel}`);
|
||||
redisSubscribeClient.subscribe(channel);
|
||||
}
|
||||
|
||||
subs[channel].push(callback);
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {string} channel
|
||||
* @param {function(string): void} callback
|
||||
*/
|
||||
const unsubscribe = (channel, callback) => {
|
||||
log.silly(`Removing listener for ${channel}`);
|
||||
|
||||
if (!subs[channel]) {
|
||||
return;
|
||||
}
|
||||
|
||||
subs[channel] = subs[channel].filter(item => item !== callback);
|
||||
|
||||
if (subs[channel].length === 0) {
|
||||
log.verbose(`Unsubscribe ${channel}`);
|
||||
redisSubscribeClient.unsubscribe(channel);
|
||||
}
|
||||
};
|
||||
|
||||
const FALSE_VALUES = [
|
||||
false,
|
||||
0,
|
||||
"0",
|
||||
"f",
|
||||
"F",
|
||||
"false",
|
||||
"FALSE",
|
||||
"off",
|
||||
"OFF"
|
||||
];
|
||||
|
||||
/**
|
||||
* @param {any} value
|
||||
* @return {boolean}
|
||||
*/
|
||||
const isTruthy = value =>
|
||||
value && !FALSE_VALUES.includes(value);
|
||||
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {any} res
|
||||
* @param {function(Error=): void}
|
||||
*/
|
||||
const allowCrossDomain = (req, res, next) => {
|
||||
res.header('Access-Control-Allow-Origin', '*');
|
||||
res.header('Access-Control-Allow-Headers', 'Authorization, Accept, Cache-Control');
|
||||
|
|
@ -191,6 +245,11 @@ const startWorker = (workerId) => {
|
|||
next();
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {any} res
|
||||
* @param {function(Error=): void}
|
||||
*/
|
||||
const setRequestId = (req, res, next) => {
|
||||
req.requestId = uuid.v4();
|
||||
res.header('X-Request-Id', req.requestId);
|
||||
|
|
@ -198,16 +257,26 @@ const startWorker = (workerId) => {
|
|||
next();
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {any} res
|
||||
* @param {function(Error=): void}
|
||||
*/
|
||||
const setRemoteAddress = (req, res, next) => {
|
||||
req.remoteAddress = req.connection.remoteAddress;
|
||||
|
||||
next();
|
||||
};
|
||||
|
||||
const accountFromToken = (token, allowedScopes, req, next) => {
|
||||
/**
|
||||
* @param {string} token
|
||||
* @param {any} req
|
||||
* @return {Promise.<void>}
|
||||
*/
|
||||
const accountFromToken = (token, req) => new Promise((resolve, reject) => {
|
||||
pgPool.connect((err, client, done) => {
|
||||
if (err) {
|
||||
next(err);
|
||||
reject(err);
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
@ -215,62 +284,88 @@ const startWorker = (workerId) => {
|
|||
done();
|
||||
|
||||
if (err) {
|
||||
next(err);
|
||||
reject(err);
|
||||
return;
|
||||
}
|
||||
|
||||
if (result.rows.length === 0) {
|
||||
err = new Error('Invalid access token');
|
||||
err.statusCode = 401;
|
||||
err.status = 401;
|
||||
|
||||
next(err);
|
||||
return;
|
||||
}
|
||||
|
||||
const scopes = result.rows[0].scopes.split(' ');
|
||||
|
||||
if (allowedScopes.size > 0 && !scopes.some(scope => allowedScopes.includes(scope))) {
|
||||
err = new Error('Access token does not cover required scopes');
|
||||
err.statusCode = 401;
|
||||
|
||||
next(err);
|
||||
reject(err);
|
||||
return;
|
||||
}
|
||||
|
||||
req.scopes = result.rows[0].scopes.split(' ');
|
||||
req.accountId = result.rows[0].account_id;
|
||||
req.chosenLanguages = result.rows[0].chosen_languages;
|
||||
req.allowNotifications = scopes.some(scope => ['read', 'read:notifications'].includes(scope));
|
||||
req.allowNotifications = req.scopes.some(scope => ['read', 'read:notifications'].includes(scope));
|
||||
req.deviceId = result.rows[0].device_id;
|
||||
|
||||
next();
|
||||
resolve();
|
||||
});
|
||||
});
|
||||
};
|
||||
});
|
||||
|
||||
const accountFromRequest = (req, next, required = true, allowedScopes = ['read']) => {
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {boolean=} required
|
||||
* @return {Promise.<void>}
|
||||
*/
|
||||
const accountFromRequest = (req, required = true) => new Promise((resolve, reject) => {
|
||||
const authorization = req.headers.authorization;
|
||||
const location = url.parse(req.url, true);
|
||||
const accessToken = location.query.access_token || req.headers['sec-websocket-protocol'];
|
||||
const location = url.parse(req.url, true);
|
||||
const accessToken = location.query.access_token || req.headers['sec-websocket-protocol'];
|
||||
|
||||
if (!authorization && !accessToken) {
|
||||
if (required) {
|
||||
const err = new Error('Missing access token');
|
||||
err.statusCode = 401;
|
||||
err.status = 401;
|
||||
|
||||
next(err);
|
||||
reject(err);
|
||||
return;
|
||||
} else {
|
||||
next();
|
||||
resolve();
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
const token = authorization ? authorization.replace(/^Bearer /, '') : accessToken;
|
||||
|
||||
accountFromToken(token, allowedScopes, req, next);
|
||||
resolve(accountFromToken(token, req));
|
||||
});
|
||||
|
||||
/**
|
||||
* @param {any} req
|
||||
* @return {string}
|
||||
*/
|
||||
const channelNameFromPath = req => {
|
||||
const { path, query } = req;
|
||||
const onlyMedia = isTruthy(query.only_media);
|
||||
|
||||
switch(path) {
|
||||
case '/api/v1/streaming/user':
|
||||
return 'user';
|
||||
case '/api/v1/streaming/user/notification':
|
||||
return 'user:notification';
|
||||
case '/api/v1/streaming/public':
|
||||
return onlyMedia ? 'public:media' : 'public';
|
||||
case '/api/v1/streaming/public/local':
|
||||
return onlyMedia ? 'public:local:media' : 'public:local';
|
||||
case '/api/v1/streaming/public/remote':
|
||||
return onlyMedia ? 'public:remote:media' : 'public:remote';
|
||||
case '/api/v1/streaming/hashtag':
|
||||
return 'hashtag';
|
||||
case '/api/v1/streaming/hashtag/local':
|
||||
return 'hashtag:local';
|
||||
case '/api/v1/streaming/direct':
|
||||
return 'direct';
|
||||
case '/api/v1/streaming/list':
|
||||
return 'list';
|
||||
}
|
||||
};
|
||||
|
||||
const PUBLIC_STREAMS = [
|
||||
const PUBLIC_CHANNELS = [
|
||||
'public',
|
||||
'public:media',
|
||||
'public:local',
|
||||
|
|
@ -281,95 +376,148 @@ const startWorker = (workerId) => {
|
|||
'hashtag:local',
|
||||
];
|
||||
|
||||
const wsVerifyClient = (info, cb) => {
|
||||
const location = url.parse(info.req.url, true);
|
||||
const authRequired = alwaysRequireAuth || !PUBLIC_STREAMS.some(stream => stream === location.query.stream);
|
||||
const allowedScopes = [];
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {string} channelName
|
||||
* @return {Promise.<void>}
|
||||
*/
|
||||
const checkScopes = (req, channelName) => new Promise((resolve, reject) => {
|
||||
log.silly(req.requestId, `Checking OAuth scopes for ${channelName}`);
|
||||
|
||||
if (authRequired) {
|
||||
allowedScopes.push('read');
|
||||
if (location.query.stream === 'user:notification') {
|
||||
allowedScopes.push('read:notifications');
|
||||
} else {
|
||||
allowedScopes.push('read:statuses');
|
||||
}
|
||||
// When accessing public channels, no scopes are needed
|
||||
if (PUBLIC_CHANNELS.includes(channelName)) {
|
||||
resolve();
|
||||
return;
|
||||
}
|
||||
|
||||
accountFromRequest(info.req, err => {
|
||||
if (!err) {
|
||||
cb(true, undefined, undefined);
|
||||
} else {
|
||||
log.error(info.req.requestId, err.toString());
|
||||
cb(false, 401, 'Unauthorized');
|
||||
}
|
||||
}, authRequired, allowedScopes);
|
||||
// The `read` scope has the highest priority, if the token has it
|
||||
// then it can access all streams
|
||||
const requiredScopes = ['read'];
|
||||
|
||||
// When accessing specifically the notifications stream,
|
||||
// we need a read:notifications, while in all other cases,
|
||||
// we can allow access with read:statuses. Mind that the
|
||||
// user stream will not contain notifications unless
|
||||
// the token has either read or read:notifications scope
|
||||
// as well, this is handled separately.
|
||||
if (channelName === 'user:notification') {
|
||||
requiredScopes.push('read:notifications');
|
||||
} else {
|
||||
requiredScopes.push('read:statuses');
|
||||
}
|
||||
|
||||
if (requiredScopes.some(requiredScope => req.scopes.includes(requiredScope))) {
|
||||
resolve();
|
||||
return;
|
||||
}
|
||||
|
||||
const err = new Error('Access token does not cover required scopes');
|
||||
err.status = 401;
|
||||
|
||||
reject(err);
|
||||
});
|
||||
|
||||
/**
|
||||
* @param {any} info
|
||||
* @param {function(boolean, number, string): void} callback
|
||||
*/
|
||||
const wsVerifyClient = (info, callback) => {
|
||||
// When verifying the websockets connection, we no longer pre-emptively
|
||||
// check OAuth scopes and drop the connection if they're missing. We only
|
||||
// drop the connection if access without token is not allowed by environment
|
||||
// variables. OAuth scope checks are moved to the point of subscription
|
||||
// to a specific stream.
|
||||
|
||||
accountFromRequest(info.req, alwaysRequireAuth).then(() => {
|
||||
callback(true, undefined, undefined);
|
||||
}).catch(err => {
|
||||
log.error(info.req.requestId, err.toString());
|
||||
callback(false, 401, 'Unauthorized');
|
||||
});
|
||||
};
|
||||
|
||||
const PUBLIC_ENDPOINTS = [
|
||||
'/api/v1/streaming/public',
|
||||
'/api/v1/streaming/public/local',
|
||||
'/api/v1/streaming/public/remote',
|
||||
'/api/v1/streaming/hashtag',
|
||||
'/api/v1/streaming/hashtag/local',
|
||||
];
|
||||
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {any} res
|
||||
* @param {function(Error=): void} next
|
||||
*/
|
||||
const authenticationMiddleware = (req, res, next) => {
|
||||
if (req.method === 'OPTIONS') {
|
||||
next();
|
||||
return;
|
||||
}
|
||||
|
||||
const authRequired = alwaysRequireAuth || !PUBLIC_ENDPOINTS.some(endpoint => endpoint === req.path);
|
||||
const allowedScopes = [];
|
||||
|
||||
if (authRequired) {
|
||||
allowedScopes.push('read');
|
||||
if (req.path === '/api/v1/streaming/user/notification') {
|
||||
allowedScopes.push('read:notifications');
|
||||
} else {
|
||||
allowedScopes.push('read:statuses');
|
||||
}
|
||||
}
|
||||
|
||||
accountFromRequest(req, next, authRequired, allowedScopes);
|
||||
};
|
||||
|
||||
const errorMiddleware = (err, req, res, {}) => {
|
||||
log.error(req.requestId, err.toString());
|
||||
res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' });
|
||||
res.end(JSON.stringify({ error: err.statusCode ? err.toString() : 'An unexpected error occurred' }));
|
||||
};
|
||||
|
||||
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
||||
|
||||
const authorizeListAccess = (id, req, next) => {
|
||||
pgPool.connect((err, client, done) => {
|
||||
if (err) {
|
||||
next(false);
|
||||
return;
|
||||
}
|
||||
|
||||
client.query('SELECT id, account_id FROM lists WHERE id = $1 LIMIT 1', [id], (err, result) => {
|
||||
done();
|
||||
|
||||
if (err || result.rows.length === 0 || result.rows[0].account_id !== req.accountId) {
|
||||
next(false);
|
||||
return;
|
||||
}
|
||||
|
||||
next(true);
|
||||
});
|
||||
accountFromRequest(req, alwaysRequireAuth).then(() => checkScopes(req, channelNameFromPath(req))).then(() => {
|
||||
next();
|
||||
}).catch(err => {
|
||||
next(err);
|
||||
});
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {Error} err
|
||||
* @param {any} req
|
||||
* @param {any} res
|
||||
* @param {function(Error=): void} next
|
||||
*/
|
||||
const errorMiddleware = (err, req, res, next) => {
|
||||
log.error(req.requestId, err.toString());
|
||||
|
||||
if (res.headersSent) {
|
||||
return next(err);
|
||||
}
|
||||
|
||||
res.writeHead(err.status || 500, { 'Content-Type': 'application/json' });
|
||||
res.end(JSON.stringify({ error: err.status ? err.toString() : 'An unexpected error occurred' }));
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {array}
|
||||
* @param {number=} shift
|
||||
* @return {string}
|
||||
*/
|
||||
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
||||
|
||||
/**
|
||||
* @param {string} listId
|
||||
* @param {any} req
|
||||
* @return {Promise.<void>}
|
||||
*/
|
||||
const authorizeListAccess = (listId, req) => new Promise((resolve, reject) => {
|
||||
const { accountId } = req;
|
||||
|
||||
pgPool.connect((err, client, done) => {
|
||||
if (err) {
|
||||
reject();
|
||||
return;
|
||||
}
|
||||
|
||||
client.query('SELECT id, account_id FROM lists WHERE id = $1 LIMIT 1', [listId], (err, result) => {
|
||||
done();
|
||||
|
||||
if (err || result.rows.length === 0 || result.rows[0].account_id !== accountId) {
|
||||
reject();
|
||||
return;
|
||||
}
|
||||
|
||||
resolve();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
/**
|
||||
* @param {string[]} ids
|
||||
* @param {any} req
|
||||
* @param {function(string, string): void} output
|
||||
* @param {function(string[], function(string): void): void} attachCloseHandler
|
||||
* @param {boolean=} needsFiltering
|
||||
* @param {boolean=} notificationOnly
|
||||
* @return {function(string): void}
|
||||
*/
|
||||
const streamFrom = (ids, req, output, attachCloseHandler, needsFiltering = false, notificationOnly = false) => {
|
||||
const accountId = req.accountId || req.remoteAddress;
|
||||
const streamType = notificationOnly ? ' (notification)' : '';
|
||||
|
||||
if (!Array.isArray(ids)) {
|
||||
ids = [ids];
|
||||
}
|
||||
|
||||
log.verbose(req.requestId, `Starting stream from ${ids.join(', ')} for ${accountId}${streamType}`);
|
||||
|
||||
const listener = message => {
|
||||
|
|
@ -447,10 +595,18 @@ const startWorker = (workerId) => {
|
|||
subscribe(`${redisPrefix}${id}`, listener);
|
||||
});
|
||||
|
||||
attachCloseHandler(ids.map(id => `${redisPrefix}${id}`), listener);
|
||||
if (attachCloseHandler) {
|
||||
attachCloseHandler(ids.map(id => `${redisPrefix}${id}`), listener);
|
||||
}
|
||||
|
||||
return listener;
|
||||
};
|
||||
|
||||
// Setup stream output to HTTP
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {any} res
|
||||
* @return {function(string, string): void}
|
||||
*/
|
||||
const streamToHttp = (req, res) => {
|
||||
const accountId = req.accountId || req.remoteAddress;
|
||||
|
||||
|
|
@ -473,12 +629,12 @@ const startWorker = (workerId) => {
|
|||
};
|
||||
};
|
||||
|
||||
// Setup stream end for HTTP
|
||||
const streamHttpEnd = (req, closeHandler = false) => (ids, listener) => {
|
||||
if (!Array.isArray(ids)) {
|
||||
ids = [ids];
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {function(): void} [closeHandler]
|
||||
* @return {function(string[], function(string): void)}
|
||||
*/
|
||||
const streamHttpEnd = (req, closeHandler = undefined) => (ids, listener) => {
|
||||
req.on('close', () => {
|
||||
ids.forEach(id => {
|
||||
unsubscribe(id, listener);
|
||||
|
|
@ -490,37 +646,24 @@ const startWorker = (workerId) => {
|
|||
});
|
||||
};
|
||||
|
||||
// Setup stream output to WebSockets
|
||||
const streamToWs = (req, ws) => (event, payload) => {
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {any} ws
|
||||
* @param {string[]} streamName
|
||||
* @return {function(string, string): void}
|
||||
*/
|
||||
const streamToWs = (req, ws, streamName) => (event, payload) => {
|
||||
if (ws.readyState !== ws.OPEN) {
|
||||
log.error(req.requestId, 'Tried writing to closed socket');
|
||||
return;
|
||||
}
|
||||
|
||||
ws.send(JSON.stringify({ event, payload }));
|
||||
};
|
||||
|
||||
// Setup stream end for WebSockets
|
||||
const streamWsEnd = (req, ws, closeHandler = false) => (id, listener) => {
|
||||
const accountId = req.accountId || req.remoteAddress;
|
||||
|
||||
ws.on('close', () => {
|
||||
log.verbose(req.requestId, `Ending stream for ${accountId}`);
|
||||
unsubscribe(id, listener);
|
||||
if (closeHandler) {
|
||||
closeHandler();
|
||||
}
|
||||
});
|
||||
|
||||
ws.on('error', () => {
|
||||
log.verbose(req.requestId, `Ending stream for ${accountId}`);
|
||||
unsubscribe(id, listener);
|
||||
if (closeHandler) {
|
||||
closeHandler();
|
||||
}
|
||||
});
|
||||
ws.send(JSON.stringify({ stream: streamName, event, payload }));
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {any} res
|
||||
*/
|
||||
const httpNotFound = res => {
|
||||
res.writeHead(404, { 'Content-Type': 'application/json' });
|
||||
res.end(JSON.stringify({ error: 'Not found' }));
|
||||
|
|
@ -538,157 +681,267 @@ const startWorker = (workerId) => {
|
|||
app.use(authenticationMiddleware);
|
||||
app.use(errorMiddleware);
|
||||
|
||||
app.get('/api/v1/streaming/user', (req, res) => {
|
||||
const channels = [`timeline:${req.accountId}`];
|
||||
app.get('/api/v1/streaming/*', (req, res) => {
|
||||
channelNameToIds(req, channelNameFromPath(req), req.query).then(({ channelIds, options }) => {
|
||||
const onSend = streamToHttp(req, res);
|
||||
const onEnd = streamHttpEnd(req, subscriptionHeartbeat(channelIds));
|
||||
|
||||
if (req.deviceId) {
|
||||
channels.push(`timeline:${req.accountId}:${req.deviceId}`);
|
||||
}
|
||||
|
||||
streamFrom(channels, req, streamToHttp(req, res), streamHttpEnd(req, subscriptionHeartbeat(channels)));
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/user/notification', (req, res) => {
|
||||
streamFrom(`timeline:${req.accountId}`, req, streamToHttp(req, res), streamHttpEnd(req), false, true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/public', (req, res) => {
|
||||
const onlyMedia = req.query.only_media === '1' || req.query.only_media === 'true';
|
||||
const channel = onlyMedia ? 'timeline:public:media' : 'timeline:public';
|
||||
|
||||
streamFrom(channel, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/public/local', (req, res) => {
|
||||
const onlyMedia = req.query.only_media === '1' || req.query.only_media === 'true';
|
||||
const channel = onlyMedia ? 'timeline:public:local:media' : 'timeline:public:local';
|
||||
|
||||
streamFrom(channel, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/public/remote', (req, res) => {
|
||||
const onlyMedia = req.query.only_media === '1' || req.query.only_media === 'true';
|
||||
const channel = onlyMedia ? 'timeline:public:remote:media' : 'timeline:public:remote';
|
||||
|
||||
streamFrom(channel, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/direct', (req, res) => {
|
||||
const channel = `timeline:direct:${req.accountId}`;
|
||||
streamFrom(channel, req, streamToHttp(req, res), streamHttpEnd(req, subscriptionHeartbeat(channel)), true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/hashtag', (req, res) => {
|
||||
const { tag } = req.query;
|
||||
|
||||
if (!tag || tag.length === 0) {
|
||||
streamFrom(channelIds, req, onSend, onEnd, options.needsFiltering, options.notificationOnly);
|
||||
}).catch(err => {
|
||||
log.verbose(req.requestId, 'Subscription error:', err.toString());
|
||||
httpNotFound(res);
|
||||
return;
|
||||
}
|
||||
|
||||
streamFrom(`timeline:hashtag:${tag.toLowerCase()}`, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/hashtag/local', (req, res) => {
|
||||
const { tag } = req.query;
|
||||
|
||||
if (!tag || tag.length === 0) {
|
||||
httpNotFound(res);
|
||||
return;
|
||||
}
|
||||
|
||||
streamFrom(`timeline:hashtag:${tag.toLowerCase()}:local`, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
||||
});
|
||||
|
||||
app.get('/api/v1/streaming/list', (req, res) => {
|
||||
const listId = req.query.list;
|
||||
|
||||
authorizeListAccess(listId, req, authorized => {
|
||||
if (!authorized) {
|
||||
httpNotFound(res);
|
||||
return;
|
||||
}
|
||||
|
||||
const channel = `timeline:list:${listId}`;
|
||||
streamFrom(channel, req, streamToHttp(req, res), streamHttpEnd(req, subscriptionHeartbeat(channel)));
|
||||
});
|
||||
});
|
||||
|
||||
const wss = new WebSocketServer({ server, verifyClient: wsVerifyClient });
|
||||
|
||||
wss.on('connection', (ws, req) => {
|
||||
const location = url.parse(req.url, true);
|
||||
req.requestId = uuid.v4();
|
||||
req.remoteAddress = ws._socket.remoteAddress;
|
||||
/**
|
||||
* @typedef StreamParams
|
||||
* @property {string} [tag]
|
||||
* @property {string} [list]
|
||||
* @property {string} [only_media]
|
||||
*/
|
||||
|
||||
let channel;
|
||||
|
||||
switch(location.query.stream) {
|
||||
/**
|
||||
* @param {any} req
|
||||
* @param {string} name
|
||||
* @param {StreamParams} params
|
||||
* @return {Promise.<{ channelIds: string[], options: { needsFiltering: boolean, notificationOnly: boolean } }>}
|
||||
*/
|
||||
const channelNameToIds = (req, name, params) => new Promise((resolve, reject) => {
|
||||
switch(name) {
|
||||
case 'user':
|
||||
channel = [`timeline:${req.accountId}`];
|
||||
resolve({
|
||||
channelIds: req.deviceId ? [`timeline:${req.accountId}`, `timeline:${req.accountId}:${req.deviceId}`] : [`timeline:${req.accountId}`],
|
||||
options: { needsFiltering: false, notificationOnly: false },
|
||||
});
|
||||
|
||||
if (req.deviceId) {
|
||||
channel.push(`timeline:${req.accountId}:${req.deviceId}`);
|
||||
}
|
||||
|
||||
streamFrom(channel, req, streamToWs(req, ws), streamWsEnd(req, ws, subscriptionHeartbeat(channel)));
|
||||
break;
|
||||
case 'user:notification':
|
||||
streamFrom(`timeline:${req.accountId}`, req, streamToWs(req, ws), streamWsEnd(req, ws), false, true);
|
||||
resolve({
|
||||
channelIds: [`timeline:${req.accountId}`],
|
||||
options: { needsFiltering: false, notificationOnly: true },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'public':
|
||||
streamFrom('timeline:public', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
resolve({
|
||||
channelIds: ['timeline:public'],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'public:local':
|
||||
streamFrom('timeline:public:local', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
resolve({
|
||||
channelIds: ['timeline:public:local'],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'public:remote':
|
||||
streamFrom('timeline:public:remote', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
resolve({
|
||||
channelIds: ['timeline:public:remote'],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'public:media':
|
||||
streamFrom('timeline:public:media', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
resolve({
|
||||
channelIds: ['timeline:public:media'],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'public:local:media':
|
||||
streamFrom('timeline:public:local:media', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
resolve({
|
||||
channelIds: ['timeline:public:local:media'],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'public:remote:media':
|
||||
streamFrom('timeline:public:remote:media', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
resolve({
|
||||
channelIds: ['timeline:public:remote:media'],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'direct':
|
||||
channel = `timeline:direct:${req.accountId}`;
|
||||
streamFrom(channel, req, streamToWs(req, ws), streamWsEnd(req, ws, subscriptionHeartbeat(channel)), true);
|
||||
resolve({
|
||||
channelIds: [`timeline:direct:${req.accountId}`],
|
||||
options: { needsFiltering: false, notificationOnly: false },
|
||||
});
|
||||
|
||||
break;
|
||||
case 'hashtag':
|
||||
if (!location.query.tag || location.query.tag.length === 0) {
|
||||
ws.close();
|
||||
return;
|
||||
if (!params.tag || params.tag.length === 0) {
|
||||
reject('No tag for stream provided');
|
||||
} else {
|
||||
resolve({
|
||||
channelIds: [`timeline:hashtag:${params.tag.toLowerCase()}`],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
}
|
||||
|
||||
streamFrom(`timeline:hashtag:${location.query.tag.toLowerCase()}`, req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
break;
|
||||
case 'hashtag:local':
|
||||
if (!location.query.tag || location.query.tag.length === 0) {
|
||||
ws.close();
|
||||
if (!params.tag || params.tag.length === 0) {
|
||||
reject('No tag for stream provided');
|
||||
} else {
|
||||
resolve({
|
||||
channelIds: [`timeline:hashtag:${params.tag.toLowerCase()}:local`],
|
||||
options: { needsFiltering: true, notificationOnly: false },
|
||||
});
|
||||
}
|
||||
|
||||
break;
|
||||
case 'list':
|
||||
authorizeListAccess(params.list, req).then(() => {
|
||||
resolve({
|
||||
channelIds: [`timeline:list:${params.list}`],
|
||||
options: { needsFiltering: false, notificationOnly: false },
|
||||
});
|
||||
}).catch(() => {
|
||||
reject('Not authorized to stream this list');
|
||||
});
|
||||
|
||||
break;
|
||||
default:
|
||||
reject('Unknown stream type');
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* @param {string} channelName
|
||||
* @param {StreamParams} params
|
||||
* @return {string[]}
|
||||
*/
|
||||
const streamNameFromChannelName = (channelName, params) => {
|
||||
if (channelName === 'list') {
|
||||
return [channelName, params.list];
|
||||
} else if (['hashtag', 'hashtag:local'].includes(channelName)) {
|
||||
return [channelName, params.tag];
|
||||
} else {
|
||||
return [channelName];
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* @typedef WebSocketSession
|
||||
* @property {any} socket
|
||||
* @property {any} request
|
||||
* @property {Object.<string, { listener: function(string): void, stopHeartbeat: function(): void }>} subscriptions
|
||||
*/
|
||||
|
||||
/**
|
||||
* @param {WebSocketSession} session
|
||||
* @param {string} channelName
|
||||
* @param {StreamParams} params
|
||||
*/
|
||||
const subscribeWebsocketToChannel = ({ socket, request, subscriptions }, channelName, params) =>
|
||||
checkScopes(request, channelName).then(() => channelNameToIds(request, channelName, params)).then(({ channelIds, options }) => {
|
||||
if (subscriptions[channelIds.join(';')]) {
|
||||
return;
|
||||
}
|
||||
|
||||
streamFrom(`timeline:hashtag:${location.query.tag.toLowerCase()}:local`, req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
||||
break;
|
||||
case 'list':
|
||||
const listId = location.query.list;
|
||||
const onSend = streamToWs(request, socket, streamNameFromChannelName(channelName, params));
|
||||
const stopHeartbeat = subscriptionHeartbeat(channelIds);
|
||||
const listener = streamFrom(channelIds, request, onSend, undefined, options.needsFiltering, options.notificationOnly);
|
||||
|
||||
authorizeListAccess(listId, req, authorized => {
|
||||
if (!authorized) {
|
||||
ws.close();
|
||||
return;
|
||||
}
|
||||
subscriptions[channelIds.join(';')] = {
|
||||
listener,
|
||||
stopHeartbeat,
|
||||
};
|
||||
}).catch(err => {
|
||||
log.verbose(request.requestId, 'Subscription error:', err.toString());
|
||||
socket.send(JSON.stringify({ error: err.toString() }));
|
||||
});
|
||||
|
||||
channel = `timeline:list:${listId}`;
|
||||
streamFrom(channel, req, streamToWs(req, ws), streamWsEnd(req, ws, subscriptionHeartbeat(channel)));
|
||||
/**
|
||||
* @param {WebSocketSession} session
|
||||
* @param {string} channelName
|
||||
* @param {StreamParams} params
|
||||
*/
|
||||
const unsubscribeWebsocketFromChannel = ({ socket, request, subscriptions }, channelName, params) =>
|
||||
channelNameToIds(request, channelName, params).then(({ channelIds }) => {
|
||||
log.verbose(request.requestId, `Ending stream from ${channelIds.join(', ')} for ${request.accountId}`);
|
||||
|
||||
const { listener, stopHeartbeat } = subscriptions[channelIds.join(';')];
|
||||
|
||||
if (!listener) {
|
||||
return;
|
||||
}
|
||||
|
||||
channelIds.forEach(channelId => {
|
||||
unsubscribe(`${redisPrefix}${channelId}`, listener);
|
||||
});
|
||||
break;
|
||||
default:
|
||||
ws.close();
|
||||
|
||||
stopHeartbeat();
|
||||
|
||||
subscriptions[channelIds.join(';')] = undefined;
|
||||
}).catch(err => {
|
||||
log.verbose(request.requestId, 'Unsubscription error:', err);
|
||||
socket.send(JSON.stringify({ error: err.toString() }));
|
||||
});
|
||||
|
||||
/**
|
||||
* @param {string|string[]} arrayOrString
|
||||
* @return {string}
|
||||
*/
|
||||
const firstParam = arrayOrString => {
|
||||
if (Array.isArray(arrayOrString)) {
|
||||
return arrayOrString[0];
|
||||
} else {
|
||||
return arrayOrString;
|
||||
}
|
||||
};
|
||||
|
||||
wss.on('connection', (ws, req) => {
|
||||
const location = url.parse(req.url, true);
|
||||
|
||||
req.requestId = uuid.v4();
|
||||
req.remoteAddress = ws._socket.remoteAddress;
|
||||
|
||||
/**
|
||||
* @type {WebSocketSession}
|
||||
*/
|
||||
const session = {
|
||||
socket: ws,
|
||||
request: req,
|
||||
subscriptions: {},
|
||||
};
|
||||
|
||||
const onEnd = () => {
|
||||
const keys = Object.keys(session.subscriptions);
|
||||
|
||||
keys.forEach(channelIds => {
|
||||
const { listener, stopHeartbeat } = session.subscriptions[channelIds];
|
||||
|
||||
channelIds.split(';').forEach(channelId => {
|
||||
unsubscribe(`${redisPrefix}${channelId}`, listener);
|
||||
});
|
||||
|
||||
stopHeartbeat();
|
||||
});
|
||||
};
|
||||
|
||||
ws.on('close', onEnd);
|
||||
ws.on('error', onEnd);
|
||||
|
||||
ws.on('message', data => {
|
||||
const { type, stream, ...params } = JSON.parse(data);
|
||||
|
||||
if (type === 'subscribe') {
|
||||
subscribeWebsocketToChannel(session, firstParam(stream), params);
|
||||
} else if (type === 'unsubscribe') {
|
||||
unsubscribeWebsocketFromChannel(session, firstParam(stream), params)
|
||||
} else {
|
||||
// Unknown action type
|
||||
}
|
||||
});
|
||||
|
||||
if (location.query.stream) {
|
||||
subscribeWebsocketToChannel(session, firstParam(location.query.stream), location.query);
|
||||
}
|
||||
});
|
||||
|
||||
|
|
@ -716,6 +969,10 @@ const startWorker = (workerId) => {
|
|||
process.on('uncaughtException', onError);
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {any} server
|
||||
* @param {function(string): void} [onSuccess]
|
||||
*/
|
||||
const attachServerWithConfig = (server, onSuccess) => {
|
||||
if (process.env.SOCKET || process.env.PORT && isNaN(+process.env.PORT)) {
|
||||
server.listen(process.env.SOCKET || process.env.PORT, () => {
|
||||
|
|
@ -733,6 +990,9 @@ const attachServerWithConfig = (server, onSuccess) => {
|
|||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {function(Error=): void} onSuccess
|
||||
*/
|
||||
const onPortAvailable = onSuccess => {
|
||||
const testServer = http.createServer();
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue