superset app 源码
superset app 代码
文件路径：/superset-websocket/utils/client-ws-app/public/javascripts/app.js
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
let socketCount = 0;
let messageCount = 0;
let lastMessage;
function ts() {
return new Date().getTime();
}
const cookieName = document.getElementById('cookie').innerHTML;
const tokenData = document.getElementById('tokens').innerHTML;
const tokens = JSON.parse(tokenData);
function connect() {
if (socketCount >= tokens.length) return;
// using https://github.com/js-cookie/js-cookie
// eslint-disable-next-line no-undef
Cookies.set(cookieName, tokens[socketCount], { path: '' });
// Create WebSocket connection.
let url = `ws://127.0.0.1:8080?last_id=${ts()}`;
const socket = new WebSocket(url);
// Connection opened
socket.addEventListener('open', function () {
socketCount++;
document.getElementById('socket-count').innerHTML = socketCount;
connect();
socket.send('Hello Server!');
});
// Listen for messages
socket.addEventListener('message', function (event) {
messageCount++;
lastMessage = event.data;
});
}
connect();
setInterval(() => {
document.getElementById('message-count').innerHTML = messageCount;
document.getElementById('message-debug').innerHTML = lastMessage;
}, 250);
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