dm-web-react/build/workers/backgroundSharedWorker.js

The DM web client with React.

import { SocketIOService } from "./socketIoService";
import { PreloadingHeartbeatWorkerMessage } from "../models/workerMessage/preloadingHeartbeatWorkerMessage";
import { WorkerMessageType } from "../models/enum/workerMessageType";
import { plainToClass } from "class-transformer";
console.log("backgroundSharedWorker");
SocketIOService.Instance.connect();
var messagePortMap = new Map();
SocketIOService.Instance.register(handleSocketIoInnodealingMessage);
onconnect = function (e) {
    console.log("connnect success");
    var port = e.ports[0];
    messagePortMap.set(port, new Date());
    port.addEventListener("message", function (evt) {
        console.log("on message");
        var data = evt.data;
        if (data.messageType === WorkerMessageType.PRELOADING_HEARTBEAT) {
            var msg = plainToClass(PreloadingHeartbeatWorkerMessage, data);
            transpondPreloadingHeartbeat(msg);
        }
        else if (data.messageType === WorkerMessageType.MESSAGE_PORT_HEART_BEAT) {
            console.log("messagePortHeartbeat: ", data.messageId);
            if (e.source instanceof MessagePort) {
                var matchedPortValue = messagePortMap.get(e.source);
                console.log("find matched port value: ", matchedPortValue);
                messagePortMap.set(e.source, new Date());
            }
        }
    }, false);
    port.start();
    self.setInterval(function () {
        checkMessagePortValid();
    }, 30000);
};
function handleSocketIoInnodealingMessage(data) {
    messagePortMap.forEach(function (value, key) {
        key.postMessage(data);
    });
}
function transpondPreloadingHeartbeat(heartbeatMessage) {
    console.log("transpondPreloadingHeartbeat: ", heartbeatMessage.messageId);
    messagePortMap.forEach(function (value, key) {
        key.postMessage(heartbeatMessage);
    });
}
// need check messageport disconnect from shared worker.
function checkMessagePortValid() {
    // 用户休眠 逻辑会错误
    // console.log("checkMessagePortValid start");
    // const now = new Date();
    // const needRemoveKeys: MessagePort[] = [];
    // messagePortMap.forEach((value, key) => {
    //   if (now.getTime() - value.getTime() > 60000) {
    //     needRemoveKeys.push(key);
    //   }
    // });
    // console.log("need remove message port length: ", needRemoveKeys.length);
    // for (const key of needRemoveKeys) {
    //   messagePortMap.delete(key);
    //   key.close();
    // }
    // console.log("current messsage port count", messagePortMap.size);
    // console.log("checkMessagePortValid end");
}
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