ZYM/BH-Bookstore-2023
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准备完成通讯模块

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This commit is contained in:
ZhuangYumin
2023-12-15 05:36:13 +00:00
parent 7cb2a88195
commit 0643c4372b
5 changed files with 222 additions and 43 deletions
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18
backend/src/builtin-cli.cpp
View File

@ -29,7 +29,10 @@ void BookStoreMain(bool is_server, std::string config_dir) {
// throw FatalError("Server mode has not been implemented yet", 1);
std::unordered_map<std::string, SessionClass> session_map;
std::string cmd;
std::ofstream fout("/tmp/log.txt");
while (std::getline(std::cin, cmd)) {
fout << cmd << std::endl;
fout.flush();
if (cmd[1] == 'O') //`#OpenSession [TempChannelID]`
{
std::string new_session_token = GenerateRandomString(10);
@ -42,6 +45,7 @@ void BookStoreMain(bool is_server, std::string config_dir) {
ss >> temp_channel_id;
std::cout << temp_channel_id << " Init 1\n"
<< new_session_token << ' ' << new_outh_token << std::endl;
std::cout.flush();
} else if (cmd[1] == 'S')
return;
else if (cmd[1] == 'C') {
@ -52,16 +56,19 @@ void BookStoreMain(bool is_server, std::string config_dir) {
if (session_map.find(session_token) == session_map.end()) {
std::cout << session_token << ' ' << operation_token << " -1"
<< std::endl;
std::cout.flush();
continue;
}
if (session_map[session_token].OuthorizationKey != authentic_key) {
std::cout << session_token << ' ' << operation_token << " -1"
<< std::endl;
std::cout.flush();
continue;
}
session_map.erase(session_token);
std::cout << session_token << ' ' << operation_token << " 0"
<< std::endl;
std::cout.flush();
} else if (cmd[1] == 'W') {
std::stringstream ss(cmd);
std::string session_token, operation_token, authentic_key;
@ -70,21 +77,25 @@ void BookStoreMain(bool is_server, std::string config_dir) {
if (session_map.find(session_token) == session_map.end()) {
std::cout << session_token << ' ' << operation_token << " -1"
<< std::endl;
std::cout.flush();
continue;
}
if (session_map[session_token].OuthorizationKey != authentic_key) {
std::cout << session_token << ' ' << operation_token << " -1"
<< std::endl;
std::cout.flush();
continue;
}
if (session_map[session_token].login_stack.size())
if (session_map[session_token].login_stack.size()) {
std::cout << session_token << ' ' << operation_token << " 1\n"
<< engine.QueryUserInfo(
session_map[session_token].login_stack.top().first)
<< std::endl;
else {
std::cout.flush();
} else {
std::cout << session_token << ' ' << operation_token
<< " 1\n[nobody] -1" << std::endl;
std::cout.flush();
}
} else if (cmd[1] == 'R') {
std::stringstream ss(cmd);
@ -94,11 +105,13 @@ void BookStoreMain(bool is_server, std::string config_dir) {
if (session_map.find(session_token) == session_map.end()) {
std::cout << session_token << ' ' << operation_token << " -1"
<< std::endl;
std::cout.flush();
continue;
}
if (session_map[session_token].OuthorizationKey != authentic_key) {
std::cout << session_token << ' ' << operation_token << " -1"
<< std::endl;
std::cout.flush();
continue;
}
std::getline(std::cin, cmd);
@ -107,6 +120,7 @@ void BookStoreMain(bool is_server, std::string config_dir) {
std::cout << session_token << ' ' << operation_token << " "
<< ret.size() << std::endl;
for (auto &line : ret) std::cout << line << std::endl;
std::cout.flush();
}
}
}

80
frontend/Web/index.html
View File

@ -4,50 +4,56 @@
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>Socket.IO chat</title>
<style>
body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
#form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); }
#input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; }
#input:focus { outline: none; }
#form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; }
#messages { list-style-type: none; margin: 0; padding: 0; }
#messages > li { padding: 0.5rem 1rem; }
#messages > li:nth-child(odd) { background: #efefef; }
</style>
</head>
<body>
<ul id="messages"></ul>
<!-- <ul id="messages"></ul>
<form id="form" action="">
<input id="input" autocomplete="off" /><button>Send</button>
</form>
<textarea id="input" autocomplete="off" ></textarea><button id="submit_button" type="button">Send</button>
</form> -->
<script src="/socket.io/socket.io.js"></script>
<script>
const socket = io();
const form = document.getElementById('form');
const input = document.getElementById('input');
const messages = document.getElementById('messages');
form.addEventListener("keydown", function(event){
if (event.key === "Enter" && event.ctrlKey) {
event.preventDefault();
if (input.value) {
socket.emit('chat message', input.value);
input.value = '';
}
}
});
form.addEventListener('submit', (e) => {
e.preventDefault();
if (input.value) {
socket.emit('chat message', input.value);
input.value = '';
}
});
socket.on('chat message', (msg) => {
const item = document.createElement('li');
item.textContent = msg;
messages.appendChild(item);
window.scrollTo(0, document.body.scrollHeight);
// const form = document.getElementById('form');
// const input = document.getElementById('input');
// const messages = document.getElementById('messages');
// form.addEventListener("keydown", function(event) {
// if (event.key === "Enter") {
// event.stopPropagation();
// console.log('enter triggered');
// if (event.ctrlKey) {
// console.log('ctrl triggered');
// event.preventDefault();
// if (input.value) {
// socket.emit('request', input.value);
// input.value = '';
// }
// } else {
// console.log('ctrl not triggered');
// event.preventDefault();
// input.value=input.value;
// }
// }
// });
// form.addEventListener('submit', (e) => {
// console.log('submit triggered');
// e.preventDefault();
// });
// var button = document.getElementById("submit_button");
// button.addEventListener('click', function(e) {
// e.preventDefault();
// console.log('button triggered');
// if (input.value) {
// socket.emit('request', input.value);
// input.value = '';
// }
// });
socket.on('response', (msg) => {
console.log("Get response from sever: "+msg);
// const item = document.createElement('div');
// item.textContent = msg;
// messages.appendChild(item);
// window.scrollTo(0, document.body.scrollHeight);
});
</script>
</body>

138
frontend/Web/index.js
View File

@ -6,20 +6,150 @@ const { Server } = require('socket.io');
const app = express();
const server = createServer(app);
const io = new Server(server);
class Queue {
constructor() {
this.items = [];
}
// 添加元素到队列的尾部
enqueue(element) {
this.items.push(element);
}
// 从队列的头部移除元素并返回移除的元素
dequeue() {
if (this.isEmpty()) {
return null;
}
return this.items.shift();
}
// 返回队列的头部元素
front() {
if (this.isEmpty()) {
return null;
}
return this.items[0];
}
// 检查队列是否为空
isEmpty() {
return this.items.length === 0;
}
// 返回队列的大小
size() {
return this.items.length;
}
// 清空队列
clear() {
this.items = [];
}
}
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
const message_map=new Map();
const { spawn } = require('child_process');
const backend=spawn('/workspaces/BH-Bookstore-2023/build/code',['-s','-c','/tmp/conf/']);
const AsyncLock = require('async-lock');
const lock = new AsyncLock();
function SendRequest(data) {
console.log("SendRequest called");
return new Promise((resolve, reject) => {
lock.acquire('myLock', (done) => {
console.log("SendRequest acquired lock");
console.log("sending data to backend: "+data)
backend.stdin.write(data+'\n', (error) => {
done();
if (error) {
reject(error);
} else {
resolve();
}
});
});
});
}
function GetResult(session_token,operation_token) {
console.log("GetResult called");
while(true)
{
if(message_map.has(session_token))
{
if(message_map.get(session_token).has(operation_token))
{
const ret=message_map.get(session_token).get(operation_token);
message_map.get(session_token).delete(operation_token);
return ret;
}
}
sleep(100);
}
}
let buffer = '';
const response_queue=new Queue();
backend.stdout.on('data', (data) => {
console.log(`stdout: ${data}`);
buffer += data.toString();
while (buffer.includes('\n')) {
const lineEnd = buffer.indexOf('\n');
const line = buffer.slice(0, lineEnd);
buffer = buffer.slice(lineEnd + 1);
console.log(`C++ Program Output: ${line}`);
response_queue.enqueue(line);
}
});
// SendRequest("#OpenSession InnerTest")
app.get('/', (req, res) => {
res.sendFile(join(__dirname, 'index.html'));
});
io.on('connection', (socket) => {
io.on('connection', async (socket) => {
console.log('a user connected');
socket.on('disconnect', () => {
console.log('user disconnected');
});
socket.on('chat message', (msg) => {
socket.on('request', async (msg) => {
console.log('message: ' + msg);
socket.emit('chat message', '[self]'+msg);
socket.broadcast.emit('chat message', '[other]'+msg);
const substrings = msg.trim().split('\n')[0].split(' ');
const head=substrings[0];
if(head[1]=='S')
{
backend.stdin.write("#ShutDownSystem\n");
sleep(1000);
process.exit(0);
}
const session_token=substrings[1];
if(head[1]=='O')
{
SendRequest(msg);
ret=await GetResult(session_token,"Init");
console.log("ret: "+ret);
socket.emit('response', ret);
}
else{
const operation_token=substrings[2];
const outhentication_key=substrings[3];
const command=msg.trim().split('\n')[1];
console.log('head: ' + head);
console.log('session_token: ' + session_token);
console.log('operation_token: ' + operation_token);
console.log('outhentication_key: ' + outhentication_key);
console.log('command: ' + command);
console.log("sending request to backend")
SendRequest(msg);
if(!message_map.has(session_token)) message_map.set(session_token, new Map());
ret=await GetResult(session_token,operation_token);
console.log("ret: "+ret);
socket.emit('response', ret);
}
});
});

26
frontend/Web/package-lock.json generated
View File

@ -9,7 +9,10 @@
"version": "0.0.0.1",
"license": "ISC",
"dependencies": {
"async-lock": "^1.4.0",
"async-mutex": "^0.4.0",
"express": "^4.18.2",
"mutex-js": "^1.1.5",
"socket.io": "^4.7.2"
}
},
@ -56,6 +59,19 @@
"resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
"integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
},
"node_modules/async-lock": {
"version": "1.4.0",
"resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.4.0.tgz",
"integrity": "sha512-coglx5yIWuetakm3/1dsX9hxCNox22h7+V80RQOu2XUUMidtArxKoZoOtHUPuR84SycKTXzgGzAUR5hJxujyJQ=="
},
"node_modules/async-mutex": {
"version": "0.4.0",
"resolved": "https://registry.npmjs.org/async-mutex/-/async-mutex-0.4.0.tgz",
"integrity": "sha512-eJFZ1YhRR8UN8eBLoNzcDPcy/jqjsg6I1AP+KvWQX80BqOSW1oJPJXDylPUEeMr2ZQvHgnQ//Lp6f3RQ1zI7HA==",
"dependencies": {
"tslib": "^2.4.0"
}
},
"node_modules/base64id": {
"version": "2.0.0",
"resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
@ -519,6 +535,11 @@
"resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
"integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A=="
},
"node_modules/mutex-js": {
"version": "1.1.5",
"resolved": "https://registry.npmjs.org/mutex-js/-/mutex-js-1.1.5.tgz",
"integrity": "sha512-e0PCNr2q4Er5SNrRwE/1yDFe8ILOk0yS4xFuDbO0KOfr3/5VmUcWB6SaTFaxRPqC/MWiGkfBuTRgIGz5EJtlcA=="
},
"node_modules/negotiator": {
"version": "0.6.3",
"resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
@ -808,6 +829,11 @@
"node": ">=0.6"
}
},
"node_modules/tslib": {
"version": "2.6.2",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-2.6.2.tgz",
"integrity": "sha512-AEYxH93jGFPn/a2iVAwW87VuUIkR1FVUKB77NwMF7nBTDkDrrT/Hpt/IrCJ0QXhW27jTBDcf5ZY7w6RiqTMw2Q=="
},
"node_modules/type-is": {
"version": "1.6.18",
"resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",

3
frontend/Web/package.json
View File

@ -11,7 +11,10 @@
"license": "ISC",
"type": "commonjs",
"dependencies": {
"async-lock": "^1.4.0",
"async-mutex": "^0.4.0",
"express": "^4.18.2",
"mutex-js": "^1.1.5",
"socket.io": "^4.7.2"
}
}