feat: add socketio support

package.json

@@ -32,6 +32,7 @@
     "dayjs": "^1.11.9",
     "detect-browser": "^5.3.0",
     "dotenv": "^16.3.1",
+    "eventemitter-strict": "^1.0.1",
     "express": "^4.18.2",
     "express-async-errors": "^3.1.1",
     "express-validator": "^7.0.1",

pnpm-lock.yaml

@@ -58,6 +58,9 @@ dependencies:
   dotenv:
     specifier: ^16.3.1
     version: 16.3.1
+  eventemitter-strict:
+    specifier: ^1.0.1
+    version: 1.0.1
   express:
     specifier: ^4.18.2
     version: 4.18.2
@@ -3135,6 +3138,10 @@ packages:
     engines: {node: '>= 0.6'}
     dev: false
 
+  /eventemitter-strict@1.0.1:
+    resolution: {integrity: sha512-zbePIHR/HVKUpbKSKGxtAVhHjpuiLNp/s0ZYElSvxujE2jNb505+Wv+uUWbRi/bmsbgjvvFImS8HhhNMVHgJdg==}
+    dev: false
+
   /eventemitter3@4.0.7:
     resolution: {integrity: sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==}
     dev: false

src/client/api/socketio.ts

@@ -0,0 +1,106 @@
+import { io, Socket } from 'socket.io-client';
+import { getJWT } from './auth';
+import type { SubscribeEventMap, SocketEventMap } from '../../server/ws/shared';
+import { create } from 'zustand';
+import { useEvent } from '../hooks/useEvent';
+import { useEffect } from 'react';
+
+const useSocketStore = create<{
+  socket: Socket | null;
+}>(() => ({
+  socket: null,
+}));
+
+export function createSocketIOClient(workspaceId: string) {
+  const token = getJWT();
+  const socket = io(`/${workspaceId}`, {
+    transports: ['websocket'],
+    reconnectionDelayMax: 10000,
+    auth: {
+      token,
+    },
+    forceNew: true,
+  });
+
+  useSocketStore.setState({
+    socket,
+  });
+}
+
+type SocketEventData<Name extends keyof SocketEventMap> = Parameters<
+  SocketEventMap[Name]
+>[0];
+
+type SocketEventRet<Name extends keyof SocketEventMap> = Parameters<
+  Parameters<SocketEventMap[Name]>[2]
+>[0];
+
+type SubscribeEventData<Name extends keyof SubscribeEventMap> = Parameters<
+  SubscribeEventMap[Name]
+>[1];
+
+export function useSocket() {
+  const socket = useSocketStore((state) => state.socket);
+
+  const emit = useEvent(
+    async <T extends keyof SocketEventMap>(
+      eventName: T,
+      eventData: SocketEventData<T>
+    ): Promise<SocketEventRet<T>> => {
+      if (!socket) {
+        throw new Error('Socketio not init');
+      }
+
+      return await socket.emitWithAck(eventName, eventData);
+    }
+  );
+
+  const subscribe = useEvent(
+    <T extends keyof SubscribeEventMap>(
+      name: T,
+      onData: (data: SubscribeEventData<T>) => void
+    ) => {
+      if (!socket) {
+        throw new Error('Socketio not init');
+      }
+
+      const p = emit('$subscribe', { name });
+
+      const receiveDataUpdate = (data: any) => {
+        onData(data);
+      };
+
+      const unsubscribe = () => {
+        Promise.resolve(p).then((cursor) => {
+          emit('$unsubscribe', { name, cursor });
+          socket.off(`${name}#${cursor}` as string, receiveDataUpdate);
+        });
+      };
+
+      Promise.resolve(p).then((cursor) => {
+        console.log('aaa');
+        socket.on(`${name}#${cursor}` as string, receiveDataUpdate);
+      });
+
+      return unsubscribe;
+    }
+  );
+
+  return { emit, subscribe };
+}
+
+export function useSocketSubscribe<T extends keyof SubscribeEventMap>(
+  name: T,
+  onData: (data: SubscribeEventData<T>) => void
+) {
+  const { subscribe } = useSocket();
+  const cb = useEvent(onData);
+
+  useEffect(() => {
+    const unsubscribe = subscribe(name, cb);
+
+    return () => {
+      unsubscribe();
+    };
+  }, [name]);
+}

src/client/store/user.ts

@@ -1,5 +1,6 @@
 import { create } from 'zustand';
 import { UserLoginInfo } from '../api/model/user';
+import { createSocketIOClient } from '../api/socketio';
 
 interface UserState {
   info: UserLoginInfo | null;
@@ -21,6 +22,9 @@ export function setUserInfo(info: UserLoginInfo) {
   useUserStore.setState({
     info,
   });
+
+  // create socketio after login
+  createSocketIOClient(info.currentWorkspace.id);
 }
 
 export function useCurrentWorkspaceId() {

src/server/main.ts

@@ -10,22 +10,24 @@ import { userRouter } from './router/user';
 import { websiteRouter } from './router/website';
 import { workspaceRouter } from './router/workspace';
 import { telemetryRouter } from './router/telemetry';
-import { initSocketio } from './ws';
 import { trpcExpressMiddleware } from './trpc';
 import { initUdpServer } from './udp/server';
+import { createServer } from 'http';
+import { initSocketio } from './ws';
 
 const port = Number(process.env.PORT || 12345);
 
 const app = express();
+const httpServer = createServer(app);
 
 initUdpServer(port);
 
-initSocketio(app);
+initSocketio(httpServer);
 
 app.use(compression());
 app.use(express.json());
 app.use(passport.initialize());
-app.use(morgan('tiny'));
+// app.use(morgan('tiny'));
 
 // http://expressjs.com/en/advanced/best-practice-security.html#at-a-minimum-disable-x-powered-by-header
 app.disable('x-powered-by');
@@ -42,7 +44,9 @@ app.use((err: any, req: any, res: any, next: any) => {
   res.status(500).json({ message: err.message });
 });
 
-ViteExpress.listen(app, port, () => {
-  console.log(`Server is listening on port ${port}...`);
-  console.log(`Website: http://127.0.0.1:${port}`);
+httpServer.listen(port, () => {
+  ViteExpress.bind(app, httpServer, () => {
+    console.log(`Server is listening on port ${port}...`);
+    console.log(`Website: http://127.0.0.1:${port}`);
+  });
 });

src/server/ws/index.ts

@@ -1,11 +1,60 @@
-import { Server } from 'socket.io';
-import { Express } from 'express';
-import { createServer } from 'http';
+import { Server as SocketIOServer } from 'socket.io';
+import { Server as HTTPServer } from 'http';
+import { jwtVerify } from '../middleware/auth';
+import { socketEventBus } from './shared';
+import { isUuid } from '../utils/common';
 
-export function initSocketio(app: Express) {
-  const httpServer = createServer(app);
-
-  const io = new Server(httpServer, {
-    // transports: ['websocket'],
+export function initSocketio(httpServer: HTTPServer) {
+  const io = new SocketIOServer(httpServer, {
+    transports: ['websocket'],
+    serveClient: false,
+    cors: {
+      origin: '*',
+      methods: ['GET', 'POST'],
+    },
   });
+
+  io.of((name, auth, next) => {
+    const workspaceId = name.replace(/^\//, '');
+
+    next(null, isUuid(workspaceId)); // or false, when the creation is denied
+  })
+    .use(async (socket, next) => {
+      // Auth
+      try {
+        const token = socket.handshake.auth['token'];
+        if (typeof token !== 'string') {
+          throw new Error('Token cannot be empty');
+        }
+
+        try {
+          const user = jwtVerify(token);
+
+          console.log('[Socket] Authenticated via JWT:', user.username);
+
+          socket.data.user = user;
+          socket.data.token = token;
+
+          const workspaceId = socket.nsp.name.replace(/^\//, '');
+          socket.data.workspaceId = workspaceId;
+
+          next();
+        } catch (err) {
+          console.error(err);
+          next(new Error('TokenInvalid'));
+        }
+      } catch (err: any) {
+        next(err);
+      }
+    })
+    .on('connection', (socket) => {
+      if (!socket.data.user) {
+        return;
+      }
+
+      socket.onAny((eventName, eventData, callback) => {
+        console.log('[Socket] receive:', { eventName, eventData });
+        socketEventBus.emit(eventName, eventData, socket, callback);
+      });
+    });
 }

src/server/ws/shared.ts

@@ -0,0 +1,55 @@
+import { EventEmitter } from 'eventemitter-strict';
+import { Socket } from 'socket.io';
+
+type SubscribeEventFn<T> = (workspaceId: string, eventData: T) => void;
+
+export interface SubscribeEventMap {
+  __test: SubscribeEventFn<number>;
+}
+
+type SocketEventFn<T, U = unknown> = (
+  eventData: T,
+  socket: Socket,
+  callback: (payload: U) => void
+) => void;
+
+export interface SocketEventMap {
+  // test: SocketEventFn<number, number>
+  $subscribe: SocketEventFn<{ name: keyof SubscribeEventMap }, number>;
+  $unsubscribe: SocketEventFn<
+    { name: keyof SubscribeEventMap; cursor: number },
+    void
+  >;
+}
+
+export const socketEventBus = new EventEmitter<SocketEventMap>();
+export const subscribeEventBus = new EventEmitter<SubscribeEventMap>();
+
+let i = 0;
+const subscribeFnMap: Record<string, SubscribeEventFn<any>> = {};
+socketEventBus.on('$subscribe', (eventData, socket, callback) => {
+  const _workspaceId = socket.data.workspaceId;
+  const { name } = eventData;
+
+  const cursor = i++;
+  const fn: SubscribeEventMap[typeof name] = (workspaceId, data) => {
+    if (workspaceId === '*' || _workspaceId === workspaceId) {
+      socket.emit(`${name}#${cursor}`, data);
+    }
+  };
+
+  subscribeEventBus.on(name, fn);
+
+  subscribeFnMap[`${name}#${cursor}`] = fn;
+
+  callback(cursor);
+});
+socketEventBus.on('$unsubscribe', (eventData, socket, callback) => {
+  const { name, cursor } = eventData;
+
+  const fn = subscribeFnMap[`${name}#${cursor}`];
+  if (fn) {
+    delete subscribeFnMap[`${name}#${cursor}`];
+    subscribeEventBus.off(name, fn);
+  }
+});