225 lines
5.6 KiB
TypeScript
225 lines
5.6 KiB
TypeScript
import autobind from 'autobind-decorator';
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import * as websocket from 'websocket';
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import * as debug from 'debug';
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import User, { IUser } from '../../../models/user';
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import readNotification from '../common/read-notification';
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import call from '../call';
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import { IApp } from '../../../models/app';
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import readNote from '../../../services/note/read';
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import Channel from './channel';
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import channels from './channels';
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import { EventEmitter } from 'events';
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const log = debug('misskey');
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/**
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* Main stream connection
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*/
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export default class Connection {
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public user?: IUser;
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public app: IApp;
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private wsConnection: websocket.connection;
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public subscriber: EventEmitter;
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private channels: Channel[] = [];
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private subscribingNotes: any = {};
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public sendMessageToWsOverride: any = null; // 後方互換性のため
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constructor(
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wsConnection: websocket.connection,
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subscriber: EventEmitter,
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user: IUser,
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app: IApp
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) {
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this.wsConnection = wsConnection;
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this.user = user;
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this.app = app;
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this.subscriber = subscriber;
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this.wsConnection.on('message', this.onWsConnectionMessage);
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}
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/**
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* クライアントからメッセージ受信時
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*/
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@autobind
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private async onWsConnectionMessage(data: websocket.IMessage) {
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const { type, body } = JSON.parse(data.utf8Data);
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switch (type) {
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case 'api': this.onApiRequest(body); break;
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case 'alive': this.onAlive(); break;
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case 'readNotification': this.onReadNotification(body); break;
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case 'subNote': this.onSubscribeNote(body); break;
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case 'sn': this.onSubscribeNote(body); break; // alias
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case 'unsubNote': this.onUnsubscribeNote(body); break;
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case 'un': this.onUnsubscribeNote(body); break; // alias
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case 'connect': this.onChannelConnectRequested(body); break;
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case 'disconnect': this.onChannelDisconnectRequested(body); break;
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case 'channel': this.onChannelMessageRequested(body); break;
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case 'ch': this.onChannelMessageRequested(body); break; // alias
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}
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}
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/**
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* APIリクエスト要求時
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*/
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@autobind
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private async onApiRequest(payload: any) {
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// 新鮮なデータを利用するためにユーザーをフェッチ
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const user = this.user ? await User.findOne({ _id: this.user._id }) : null;
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const endpoint = payload.endpoint || payload.ep; // alias
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// 呼び出し
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call(endpoint, user, this.app, payload.data).then(res => {
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this.sendMessageToWs(`api:${payload.id}`, { res });
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}).catch(e => {
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this.sendMessageToWs(`api:${payload.id}`, { e });
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});
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}
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@autobind
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private onAlive() {
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// Update lastUsedAt
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User.update({ _id: this.user._id }, {
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$set: {
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'lastUsedAt': new Date()
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}
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});
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}
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@autobind
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private onReadNotification(payload: any) {
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if (!payload.id) return;
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readNotification(this.user._id, payload.id);
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}
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/**
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* 投稿購読要求時
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*/
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@autobind
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private onSubscribeNote(payload: any) {
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if (!payload.id) return;
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if (this.subscribingNotes[payload.id] == null) {
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this.subscribingNotes[payload.id] = 0;
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}
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this.subscribingNotes[payload.id]++;
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if (this.subscribingNotes[payload.id] == 1) {
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this.subscriber.on(`noteStream:${payload.id}`, this.onNoteStreamMessage);
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}
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if (payload.read) {
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readNote(this.user._id, payload.id);
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}
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}
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/**
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* 投稿購読解除要求時
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*/
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@autobind
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private onUnsubscribeNote(payload: any) {
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if (!payload.id) return;
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this.subscribingNotes[payload.id]--;
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if (this.subscribingNotes[payload.id] <= 0) {
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delete this.subscribingNotes[payload.id];
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this.subscriber.off(`noteStream:${payload.id}`, this.onNoteStreamMessage);
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}
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}
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@autobind
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private async onNoteStreamMessage(data: any) {
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this.sendMessageToWs('noteUpdated', {
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id: data.body.id,
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type: data.type,
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body: data.body.body,
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});
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}
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/**
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* チャンネル接続要求時
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*/
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@autobind
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private onChannelConnectRequested(payload: any) {
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const { channel, id, params } = payload;
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log(`CH CONNECT: ${id} ${channel} by @${this.user.username}`);
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this.connectChannel(id, params, (channels as any)[channel]);
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}
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/**
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* チャンネル切断要求時
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*/
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@autobind
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private onChannelDisconnectRequested(payload: any) {
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const { id } = payload;
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log(`CH DISCONNECT: ${id} by @${this.user.username}`);
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this.disconnectChannel(id);
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}
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/**
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* クライアントにメッセージ送信
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*/
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@autobind
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public sendMessageToWs(type: string, payload: any) {
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if (this.sendMessageToWsOverride) return this.sendMessageToWsOverride(type, payload); // 後方互換性のため
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this.wsConnection.send(JSON.stringify({
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type: type,
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body: payload
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}));
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}
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/**
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* チャンネルに接続
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*/
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@autobind
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public connectChannel(id: string, params: any, channelClass: { new(id: string, connection: Connection): Channel }) {
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const channel = new channelClass(id, this);
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this.channels.push(channel);
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channel.init(params);
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this.sendMessageToWs('connected', {
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id: id
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});
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}
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/**
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* チャンネルから切断
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* @param id チャンネルコネクションID
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*/
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@autobind
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public disconnectChannel(id: string) {
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const channel = this.channels.find(c => c.id === id);
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if (channel) {
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if (channel.dispose) channel.dispose();
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this.channels = this.channels.filter(c => c.id !== id);
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}
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}
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/**
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* チャンネルへメッセージ送信要求時
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* @param data メッセージ
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*/
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@autobind
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private onChannelMessageRequested(data: any) {
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const channel = this.channels.find(c => c.id === data.id);
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if (channel != null && channel.onMessage != null) {
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channel.onMessage(data.type, data.body);
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}
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}
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/**
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* ストリームが切れたとき
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*/
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@autobind
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public dispose() {
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this.channels.forEach(c => {
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if (c.dispose) c.dispose();
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});
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}
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}
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