logic-helper/server/koa/index.js

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const actions = require('./actions.js')
const getConfig = require('../getConfig.js')
const fs = require('fs');
const path = require('path')
const EventServer = require('ws-event-bus/dist/server.js').default
const WsEventBus = require('ws-event-bus').default;
const indexHtml = path.resolve(__dirname, '../../dist/index.html')
const chalk = require('chalk')
const error = chalk.bold.red;
const warning = chalk.keyword('orange');
const success = chalk.green
function copyFile(from,to){
    fs.copyFile(from, to, (err) => {
        if (err) throw err;
    });
}

class Server {
    start(port) {
        const config = getConfig()
        const server = config.server;

        return new Promise((resolve, reject) => {
            this.start = Promise.resolve()
            try {
                const app = new EventServer({
                    port:server.port
                })
                app.static(path.resolve(__dirname, '../../dist'));
                app.start().then(() => {
                    const eventBus = new WsEventBus({ //动态服务
                        id: 'topo-server',
                        url: `ws://${server.host}:${server.port}`
                    })
                    eventBus.on('error', (e) => {
                        error('Topo Server Event Error: ' + e)
                        startPort[server.port] = null;
                        reject()
                    })
                    eventBus.on('wait', (data, request) => {
                        if (data.action) {
                            if (data.data&&typeof data.data.file === 'string' && !/\.[a-zA-Z]+$/.test(data.data.file)) {
                                data.data.file += '.json';
                            }
                            actions[data.action](data.data)
                                .then((res) => {
                                    eventBus.reply(request, res)
                                    eventBus.send({event:'dispatch',id:'topo-server',data})
                                })
                                .catch((err) => {
                                    eventBus.reply(request, err)
                                });
                        } else {
                            eventBus.reply(request, 'action is needed')
                        }
                    })
                    eventBus.on('open', (e) => {
                        console.log('>>>',success('topo server running at:'))
                        console.log('>>> Topo Editor : ',chalk.blue(`http://${server.host}:${server.port}`))
                        resolve()
                    })
                })
            } catch (e) {}
        })
    }
}
const ProxyServer = new Server();
if(`${process.cwd()}/server/koa`===__dirname){
    ProxyServer.start();
}

module.exports = ProxyServer;