83 lines
2.9 KiB
JavaScript
83 lines
2.9 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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class DataSubscriber {
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ns;
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contextBuilder;
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filterMap;
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constructor(ns, contextBuilder) {
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this.ns = ns;
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this.contextBuilder = contextBuilder;
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this.startup();
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this.filterMap = {};
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}
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/**
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* 来自外部的socket连接，监听数据变化
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*/
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startup() {
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this.ns.on('connection', async (socket) => {
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console.log('connection', socket.id);
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const { 'oak-cxt': cxtStr } = socket.handshake.headers;
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const context = await this.contextBuilder(cxtStr);
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socket.userId = context.getCurrentUserId();
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socket.context = context;
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socket.idMap = {};
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socket.on('sub', async (data, callback) => {
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console.log(data);
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try {
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await Promise.all(data.map(async (ele) => {
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const { id, entity, filter } = ele;
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console.log('sub', id, entity, filter);
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// 尝试select此filter，如果失败说明权限越界
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await context.select(entity, {
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data: {
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id: 1,
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},
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filter,
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}, {});
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}));
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}
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catch (err) {
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callback(err.toString());
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return;
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}
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const { rooms } = this.ns.adapter;
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data.forEach((ele) => {
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const { id, entity, filter } = ele;
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if (!rooms.get(id)) {
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// 本房间不存在，说明这个filter是新出现的
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if (this.filterMap[entity]) {
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// id的唯一性由前台保证，重复则无视
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Object.assign(this.filterMap[entity], {
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[id]: filter,
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});
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}
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else {
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Object.assign(this.filterMap, {
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[entity]: {
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id: filter,
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}
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});
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}
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}
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socket.join(id);
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});
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});
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socket.on('unsub', (ids) => {
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console.log('unsub', ids);
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ids.forEach((id) => {
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socket.leave(id);
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});
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});
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socket.on('disconnect', (reason) => {
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console.log('disconnect', reason);
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});
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});
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this.ns.on('delete-room', (room, id) => {
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console.log(room, id);
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});
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}
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onDataCommited(records, userId) {
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}
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}
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exports.default = DataSubscriber;
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