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@ -9,14 +9,20 @@ import os from 'os';
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import anonymize from 'ip-anonymize';
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import { importTrigger, importStatus } from './import.mjs'
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/** Preloaded games. The keys refer to the docker tags of the virtual machines.
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* The number `queueLength` determines how many instances of the docker container
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* get started before any user shows up to have them up and running immediately.
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* The values `name`, `module`, and `dir` are just used for development where we
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* use a project directory instead of a docker container.
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*/
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const games = {
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adam: {
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"github-hhu-adam:Robo": {
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name: "Adam",
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module: "Adam",
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dir: "../../../../Robo",
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queueLength: 5
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},
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nng: {
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"github-hhu-adam:NNG4": {
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name: "NNG",
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module: "NNG",
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dir: "../../../../NNG4",
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@ -50,17 +56,18 @@ const isDevelopment = environment === 'development'
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/** We keep queues of started Lean Server processes to be ready when a user arrives */
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const queue = {}
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const queueLength = 5
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function startServerProcess(gameId) {
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const serverProcess = isDevelopment
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? cp.spawn("./gameserver",
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["--server", games[gameId].dir, games[gameId].module, games[gameId].name],
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function startServerProcess(tag) {
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let serverProcess
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if (isDevelopment && games[tag]?.dir) {
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serverProcess = cp.spawn("./gameserver",
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["--server", games[tag].dir, games[tag].module, games[tag].name],
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{ cwd: "./build/bin/" })
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: cp.spawn("docker",
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["run", "--runtime=runsc", "--network=none", "--rm", "-i", `${gameId}:latest`,
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"./gameserver", "--server", "/game/", games[gameId].module, games[gameId].name],
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} else {
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serverProcess = cp.spawn("docker",
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["run", "--runtime=runsc", "--network=none", "--rm", "-i", `${tag}`],
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{ cwd: "." })
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}
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serverProcess.on('error', error =>
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console.error(`Launching Lean Server failed: ${error}`)
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);
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@ -73,32 +80,35 @@ function startServerProcess(gameId) {
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}
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/** start Lean Server processes to refill the queue */
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function fillQueue(gameId) {
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while (queue[gameId].length < games[gameId].queueLength) {
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const serverProcess = startServerProcess(gameId)
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queue[gameId].push(serverProcess)
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function fillQueue(tag) {
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while (queue[tag].length < games[tag].queueLength) {
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const serverProcess = startServerProcess(tag)
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queue[tag].push(serverProcess)
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}
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}
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for (let gameId in games) {
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queue[gameId] = []
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fillQueue(gameId)
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if (!isDevelopment) { // Don't use queue in development
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for (let tag in games) {
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queue[tag] = []
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fillQueue(tag)
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}
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}
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const urlRegEx = new RegExp("^/websocket/(.*)$")
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const urlRegEx = /^\/websocket\/g\/([\w.-]+)\/([\w.-]+)$/
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wss.addListener("connection", function(ws, req) {
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const reRes = urlRegEx.exec(req.url)
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if (!reRes) { console.error(`Connection refused because of invalid URL: ${req.url}`); return; }
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const gameId = reRes[1]
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if (!games[gameId]) { console.error(`Unknown game: ${gameId}`); return; }
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const owner = reRes[1]
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const repo = reRes[2]
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const tag = `github-${owner}:${repo}`
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let ps;
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if (isDevelopment) { // Don't use queue in development
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ps = startServerProcess(gameId)
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if (!queue[tag] || queue[tag].length == 0) {
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ps = startServerProcess(tag)
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} else {
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ps = queue[gameId].shift() // Pick the first Lean process; it's likely to be ready immediately
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fillQueue(gameId)
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ps = queue[tag].shift() // Pick the first Lean process; it's likely to be ready immediately
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fillQueue(tag)
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}
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socketCounter += 1;
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Alexander Bentkamp
3 years ago