456 lines
19 KiB
JavaScript
456 lines
19 KiB
JavaScript
const _io = require('socket.io');
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const express = require('express');
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const {
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extractRoomId,
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extractPeerId,
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extractProjectKeyFromRequest,
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extractSessionIdFromRequest,
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hasFilters,
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isValidSession,
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extractPayloadFromRequest,
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sortPaginate,
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getValidAttributes,
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uniqueAutocomplete,
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getAvailableRooms,
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getCompressionConfig
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} = require('../utils/helper');
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const {
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IDENTITIES,
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EVENTS_DEFINITION,
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extractSessionInfo,
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socketConnexionTimeout,
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errorHandler,
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authorizer
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} = require('../utils/assistHelper');
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const {
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startAssist,
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endAssist,
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handleEvent
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} = require('../utils/stats');
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const wsRouter = express.Router();
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let io;
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const debug = process.env.debug === "1";
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const createSocketIOServer = function (server, prefix) {
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io = _io(server, {
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maxHttpBufferSize: (parseFloat(process.env.maxHttpBufferSize) || 5) * 1e6,
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cors: {
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origin: "*",
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methods: ["GET", "POST", "PUT"]
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},
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path: (prefix ? prefix : '') + '/socket',
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...getCompressionConfig()
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});
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}
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const respond = function (res, data) {
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res.statusCode = 200;
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify({"data": data}));
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}
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const socketsList = async function (req, res) {
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debug && console.log("[WS]looking for all available sessions");
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let filters = await extractPayloadFromRequest(req);
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let withFilters = hasFilters(filters);
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let liveSessionsPerProject = {};
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let rooms = await getAvailableRooms(io);
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for (let roomId of rooms.keys()) {
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let {projectKey, sessionId} = extractPeerId(roomId);
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if (projectKey !== undefined) {
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liveSessionsPerProject[projectKey] = liveSessionsPerProject[projectKey] || new Set();
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if (withFilters) {
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const connected_sockets = await io.in(roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo
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&& isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessionsPerProject[projectKey].add(sessionId);
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}
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}
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} else {
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liveSessionsPerProject[projectKey].add(sessionId);
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}
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}
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}
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let liveSessions = {};
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liveSessionsPerProject.forEach((sessions, projectId) => {
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liveSessions[projectId] = Array.from(sessions);
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});
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respond(res, liveSessions);
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}
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const socketsListByProject = async function (req, res) {
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debug && console.log("[WS]looking for available sessions");
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let _projectKey = extractProjectKeyFromRequest(req);
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let _sessionId = extractSessionIdFromRequest(req);
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let filters = await extractPayloadFromRequest(req);
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let withFilters = hasFilters(filters);
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let liveSessions = new Set();
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let rooms = await getAvailableRooms(io);
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for (let roomId of rooms.keys()) {
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let {projectKey, sessionId} = extractPeerId(roomId);
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if (projectKey === _projectKey && (_sessionId === undefined || _sessionId === sessionId)) {
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if (withFilters) {
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const connected_sockets = await io.in(roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo
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&& isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessions.add(sessionId);
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}
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}
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} else {
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liveSessions.add(sessionId);
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}
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}
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}
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let sessions = Array.from(liveSessions);
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respond(res, _sessionId === undefined ? sortPaginate(sessions, filters)
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: sessions.length > 0 ? sessions[0]
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: null);
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}
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const socketsLive = async function (req, res) {
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debug && console.log("[WS]looking for all available LIVE sessions");
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let filters = await extractPayloadFromRequest(req);
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let withFilters = hasFilters(filters);
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let liveSessionsPerProject = {};
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let rooms = await getAvailableRooms(io);
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for (let peerId of rooms.keys()) {
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let {projectKey} = extractPeerId(peerId);
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if (projectKey !== undefined) {
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let connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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liveSessionsPerProject[projectKey] = liveSessionsPerProject[projectKey] || new Set();
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if (withFilters) {
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if (item.handshake.query.sessionInfo && isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessionsPerProject[projectKey].add(item.handshake.query.sessionInfo);
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}
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} else {
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liveSessionsPerProject[projectKey].add(item.handshake.query.sessionInfo);
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}
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}
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}
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}
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}
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let liveSessions = {};
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liveSessionsPerProject.forEach((sessions, projectId) => {
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liveSessions[projectId] = Array.from(sessions);
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});
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respond(res, sortPaginate(liveSessions, filters));
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}
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const socketsLiveByProject = async function (req, res) {
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debug && console.log("[WS]looking for available LIVE sessions");
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let _projectKey = extractProjectKeyFromRequest(req);
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let _sessionId = extractSessionIdFromRequest(req);
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let filters = await extractPayloadFromRequest(req);
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let withFilters = hasFilters(filters);
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let liveSessions = new Set();
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const sessIDs = new Set();
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let rooms = await getAvailableRooms(io);
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for (let roomId of rooms.keys()) {
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let {projectKey, sessionId} = extractPeerId(roomId);
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if (projectKey === _projectKey && (_sessionId === undefined || _sessionId === sessionId)) {
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let connected_sockets = await io.in(roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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if (withFilters) {
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if (item.handshake.query.sessionInfo &&
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isValidSession(item.handshake.query.sessionInfo, filters.filter) &&
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!sessIDs.has(item.handshake.query.sessionInfo.sessionID)
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) {
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liveSessions.add(item.handshake.query.sessionInfo);
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sessIDs.add(item.handshake.query.sessionInfo.sessionID);
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}
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} else {
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if (!sessIDs.has(item.handshake.query.sessionInfo.sessionID)) {
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liveSessions.add(item.handshake.query.sessionInfo);
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sessIDs.add(item.handshake.query.sessionInfo.sessionID);
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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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let sessions = Array.from(liveSessions);
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respond(res, _sessionId === undefined ? sortPaginate(sessions, filters) : sessions.length > 0 ? sessions[0] : null);
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}
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const autocomplete = async function (req, res) {
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debug && console.log("[WS]autocomplete");
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let _projectKey = extractProjectKeyFromRequest(req);
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let filters = await extractPayloadFromRequest(req);
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let results = [];
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if (filters.query && Object.keys(filters.query).length > 0) {
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let rooms = await getAvailableRooms(io);
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for (let peerId of rooms.keys()) {
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let {projectKey} = extractPeerId(peerId);
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if (projectKey === _projectKey) {
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let connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo) {
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results = [...results, ...getValidAttributes(item.handshake.query.sessionInfo, filters.query)];
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}
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}
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}
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}
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}
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respond(res, uniqueAutocomplete(results));
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}
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const findSessionSocketId = async (io, roomId, tabId) => {
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let pickFirstSession = tabId === undefined;
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const connected_sockets = await io.in(roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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if (pickFirstSession) {
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return item.id;
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} else if (item.tabId === tabId) {
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return item.id;
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}
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}
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}
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return null;
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};
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async function sessions_agents_count(io, socket) {
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let c_sessions = 0, c_agents = 0;
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const rooms = await getAvailableRooms(io);
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if (rooms.get(socket.roomId)) {
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const connected_sockets = await io.in(socket.roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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c_sessions++;
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} else {
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c_agents++;
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}
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}
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} else {
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c_agents = -1;
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c_sessions = -1;
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}
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return {c_sessions, c_agents};
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}
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async function get_all_agents_ids(io, socket) {
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let agents = [];
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const rooms = await getAvailableRooms(io);
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if (rooms.get(socket.roomId)) {
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const connected_sockets = await io.in(socket.roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.agent) {
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agents.push(item.id);
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}
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}
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}
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return agents;
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}
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wsRouter.get(`/sockets-list`, socketsList);
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wsRouter.post(`/sockets-list`, socketsList);
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wsRouter.get(`/sockets-list/:projectKey/autocomplete`, autocomplete);
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wsRouter.get(`/sockets-list/:projectKey`, socketsListByProject);
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wsRouter.post(`/sockets-list/:projectKey`, socketsListByProject);
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wsRouter.get(`/sockets-list/:projectKey/:sessionId`, socketsListByProject);
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wsRouter.get(`/sockets-live`, socketsLive);
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wsRouter.post(`/sockets-live`, socketsLive);
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wsRouter.get(`/sockets-live/:projectKey/autocomplete`, autocomplete);
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wsRouter.get(`/sockets-live/:projectKey`, socketsLiveByProject);
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wsRouter.post(`/sockets-live/:projectKey`, socketsLiveByProject);
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wsRouter.get(`/sockets-live/:projectKey/:sessionId`, socketsLiveByProject);
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async function onConnect(socket) {
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socket.on(EVENTS_DEFINITION.listen.ERROR, err => errorHandler(EVENTS_DEFINITION.listen.ERROR, err));
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debug && console.log(`WS started:${socket.id}, Query:${JSON.stringify(socket.handshake.query)}`);
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socket._connectedAt = new Date();
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let {projectKey: connProjectKey, sessionId: connSessionId, tabId:connTabId} = extractPeerId(socket.handshake.query.peerId);
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socket.peerId = socket.handshake.query.peerId;
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socket.roomId = extractRoomId(socket.peerId);
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connTabId = connTabId ?? (Math.random() + 1).toString(36).substring(2);
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socket.tabId = connTabId;
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socket.sessId = connSessionId;
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socket.projectId = socket.handshake.query.projectId;
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socket.identity = socket.handshake.query.identity;
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debug && console.log(`connProjectKey:${connProjectKey}, connSessionId:${connSessionId}, connTabId:${connTabId}, roomId:${socket.roomId}`);
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let {c_sessions, c_agents} = await sessions_agents_count(io, socket);
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if (socket.identity === IDENTITIES.session) {
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if (c_sessions > 0) {
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const rooms = await getAvailableRooms(io);
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for (let roomId of rooms.keys()) {
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let {projectKey} = extractPeerId(roomId);
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if (projectKey === connProjectKey) {
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const connected_sockets = await io.in(roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.tabId === connTabId) {
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debug && console.log(`session already connected, refusing new connexion`);
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io.to(socket.id).emit(EVENTS_DEFINITION.emit.SESSION_ALREADY_CONNECTED);
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return socket.disconnect();
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}
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}
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}
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}
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}
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extractSessionInfo(socket);
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if (c_agents > 0) {
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debug && console.log(`notifying new session about agent-existence`);
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let agents_ids = await get_all_agents_ids(io, socket);
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io.to(socket.id).emit(EVENTS_DEFINITION.emit.AGENTS_CONNECTED, agents_ids);
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socket.to(socket.roomId).emit(EVENTS_DEFINITION.emit.SESSION_RECONNECTED, socket.id);
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}
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} else if (c_sessions <= 0) {
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debug && console.log(`notifying new agent about no SESSIONS with peerId:${socket.peerId}`);
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io.to(socket.id).emit(EVENTS_DEFINITION.emit.NO_SESSIONS);
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}
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await socket.join(socket.roomId);
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const rooms = await getAvailableRooms(io);
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if (rooms.get(socket.roomId)) {
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debug && console.log(`${socket.id} joined room:${socket.roomId}, as:${socket.identity}, members:${rooms.get(socket.roomId).size}`);
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}
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if (socket.identity === IDENTITIES.agent) {
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if (socket.handshake.query.agentInfo !== undefined) {
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socket.handshake.query.agentInfo = JSON.parse(socket.handshake.query.agentInfo);
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socket.agentID = socket.handshake.query.agentInfo.id;
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// Stats
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startAssist(socket, socket.agentID);
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}
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socket.to(socket.roomId).emit(EVENTS_DEFINITION.emit.NEW_AGENT, socket.id, socket.handshake.query.agentInfo);
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}
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// Set disconnect handler
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socket.on('disconnect', () => onDisconnect(socket));
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//
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socket.on(EVENTS_DEFINITION.listen.UPDATE_EVENT, (...args) => onUpdateEvent(socket, ...args));
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//
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socket.on(EVENTS_DEFINITION.listen.CONNECT_ERROR, err => errorHandler(EVENTS_DEFINITION.listen.CONNECT_ERROR, err));
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socket.on(EVENTS_DEFINITION.listen.CONNECT_FAILED, err => errorHandler(EVENTS_DEFINITION.listen.CONNECT_FAILED, err));
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//
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socket.onAny((eventName, ...args) => onAny(socket, eventName, ...args));
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}
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async function onDisconnect(socket) {
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debug && console.log(`${socket.id} disconnected from ${socket.roomId}`);
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if (socket.identity === IDENTITIES.agent) {
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socket.to(socket.roomId).emit(EVENTS_DEFINITION.emit.AGENT_DISCONNECT, socket.id);
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// Stats
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endAssist(socket, socket.agentID);
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}
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debug && console.log("checking for number of connected agents and sessions");
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let {c_sessions, c_agents} = await sessions_agents_count(io, socket);
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if (c_sessions === -1 && c_agents === -1) {
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debug && console.log(`room not found: ${socket.roomId}`);
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}
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if (c_sessions === 0) {
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debug && console.log(`notifying everyone in ${socket.roomId} about no SESSIONS`);
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socket.to(socket.roomId).emit(EVENTS_DEFINITION.emit.NO_SESSIONS);
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}
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if (c_agents === 0) {
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debug && console.log(`notifying everyone in ${socket.roomId} about no AGENTS`);
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socket.to(socket.roomId).emit(EVENTS_DEFINITION.emit.NO_AGENTS);
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}
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}
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async function onUpdateEvent(socket, ...args) {
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debug && console.log(`${socket.id} sent update event.`);
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if (socket.identity !== IDENTITIES.session) {
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debug && console.log('Ignoring update event.');
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return
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}
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// Back compatibility (add top layer with meta information)
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if (args[0]?.meta === undefined && socket.identity === IDENTITIES.session) {
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args[0] = {meta: {tabId: socket.tabId, version: 1}, data: args[0]};
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}
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Object.assign(socket.handshake.query.sessionInfo, args[0].data, {tabId: args[0]?.meta?.tabId});
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socket.to(socket.roomId).emit(EVENTS_DEFINITION.emit.UPDATE_EVENT, args[0]);
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// Update sessionInfo for all sessions in room
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const rooms = await getAvailableRooms(io);
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for (let roomId of rooms.keys()) {
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if (roomId === socket.roomId) {
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const connected_sockets = await io.in(roomId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo) {
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Object.assign(item.handshake.query.sessionInfo, args[0]?.data, {tabId: args[0]?.meta?.tabId});
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}
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}
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}
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}
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}
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async function onAny(socket, eventName, ...args) {
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if (Object.values(EVENTS_DEFINITION.listen).indexOf(eventName) >= 0) {
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debug && console.log(`received event:${eventName}, should be handled by another listener, stopping onAny.`);
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return
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}
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// Back compatibility (add top layer with meta information)
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if (args[0]?.meta === undefined && socket.identity === IDENTITIES.session) {
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args[0] = {meta: {tabId: socket.tabId, version: 1}, data: args[0]};
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}
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if (socket.identity === IDENTITIES.session) {
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debug && console.log(`received event:${eventName}, from:${socket.identity}, sending message to room:${socket.roomId}`);
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// TODO: emit message to all agents in the room (except tabs)
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socket.to(socket.roomId).emit(eventName, args[0]);
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} else {
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handleEvent(eventName, socket, args[0]);
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debug && console.log(`received event:${eventName}, from:${socket.identity}, sending message to session of room:${socket.roomId}`);
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let socketId = await findSessionSocketId(io, socket.roomId, args[0]?.meta?.tabId);
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if (socketId === null) {
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debug && console.log(`session not found for:${socket.roomId}`);
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io.to(socket.id).emit(EVENTS_DEFINITION.emit.NO_SESSIONS);
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} else {
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debug && console.log("message sent");
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io.to(socketId).emit(eventName, socket.id, args[0]);
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}
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}
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}
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module.exports = {
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wsRouter,
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start: (server, prefix) => {
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createSocketIOServer(server, prefix);
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io.use(async (socket, next) => await authorizer.check(socket, next));
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io.on('connection', (socket) => onConnect(socket));
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console.log("WS server started");
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setInterval(async (io) => {
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try {
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let count = 0;
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const rooms = await getAvailableRooms(io);
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console.log(` ====== Rooms: ${rooms.size} ====== `);
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const arr = Array.from(rooms);
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const filtered = arr.filter(room => !room[1].has(room[0]));
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for (let i of filtered) {
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let {projectKey, sessionId, tabId} = extractPeerId(i[0]);
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if (projectKey !== null && sessionId !== null) {
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count++;
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}
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}
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console.log(` ====== Valid Rooms: ${count} ====== `);
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if (debug) {
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for (let item of filtered) {
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console.log(`Room: ${item[0]} connected: ${item[1].size}`);
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}
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}
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} catch (e) {
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console.error(e);
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}
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}, 30000, io);
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socketConnexionTimeout(io);
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},
|
|
handlers: {
|
|
socketsList,
|
|
socketsListByProject,
|
|
socketsLive,
|
|
socketsLiveByProject
|
|
}
|
|
};
|