Sharkey/src/server/api/streaming.ts

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import * as http from 'http';
import * as websocket from 'websocket';
import MainStreamConnection from './stream';
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import { ParsedUrlQuery } from 'querystring';
import authenticate from './authenticate';
import { EventEmitter } from 'events';
import { subsdcriber as redisClient } from '../../db/redis';
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module.exports = (server: http.Server) => {
// Init websocket server
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const ws = new websocket.server({
httpServer: server
});
ws.on('request', async (request) => {
const q = request.resourceURL.query as ParsedUrlQuery;
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// TODO: トークンが間違ってるなどしてauthenticateに失敗したら
// コネクション切断するなりエラーメッセージ返すなりする
// (現状はエラーがキャッチされておらずサーバーのログに流れて邪魔なので)
const [user, app] = await authenticate(q.i as string);
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const connection = request.accept();
const ev = new EventEmitter();
async function onRedisMessage(_: string, data: string) {
const parsed = JSON.parse(data);
ev.emit(parsed.channel, parsed.message);
}
redisClient.on('message', onRedisMessage);
const main = new MainStreamConnection(connection, ev, user, app);
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connection.once('close', () => {
ev.removeAllListeners();
main.dispose();
redisClient.off('message', onRedisMessage);
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});
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connection.on('message', async (data) => {
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if (data.utf8Data === 'ping') {
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connection.send('pong');
}
});
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});
};