347 lines
9.9 KiB
TypeScript
347 lines
9.9 KiB
TypeScript
import autobind from 'autobind-decorator';
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import * as websocket from 'websocket';
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import { readNotification } from '../common/read-notification';
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import call from '../call';
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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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import { User } from '../../../models/entities/user';
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import { Channel as ChannelModel } from '../../../models/entities/channel';
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import { Users, Followings, Mutings, UserProfiles, ChannelFollowings } from '../../../models';
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import { ApiError } from '../error';
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import { AccessToken } from '../../../models/entities/access-token';
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import { UserProfile } from '../../../models/entities/user-profile';
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import { publishChannelStream, publishGroupMessagingStream, publishMessagingStream } from '../../../services/stream';
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import { UserGroup } from '../../../models/entities/user-group';
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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?: User;
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public userProfile?: UserProfile;
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public following: Set<User['id']> = new Set();
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public muting: Set<User['id']> = new Set();
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public followingChannels: Set<ChannelModel['id']> = new Set();
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public token?: AccessToken;
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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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private followingClock: ReturnType<typeof setInterval>;
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private mutingClock: ReturnType<typeof setInterval>;
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private followingChannelsClock: ReturnType<typeof setInterval>;
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private userProfileClock: ReturnType<typeof setInterval>;
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constructor(
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wsConnection: websocket.connection,
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subscriber: EventEmitter,
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user: User | null | undefined,
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token: AccessToken | null | undefined
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) {
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this.wsConnection = wsConnection;
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this.subscriber = subscriber;
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if (user) this.user = user;
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if (token) this.token = token;
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this.wsConnection.on('message', this.onWsConnectionMessage);
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this.subscriber.on('broadcast', async ({ type, body }) => {
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this.onBroadcastMessage(type, body);
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});
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if (this.user) {
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this.updateFollowing();
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this.followingClock = setInterval(this.updateFollowing, 5000);
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this.updateMuting();
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this.mutingClock = setInterval(this.updateMuting, 5000);
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this.updateFollowingChannels();
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this.followingChannelsClock = setInterval(this.updateFollowingChannels, 5000);
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this.updateUserProfile();
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this.userProfileClock = setInterval(this.updateUserProfile, 5000);
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}
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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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if (data.utf8Data == null) return;
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let obj: Record<string, any>;
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try {
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obj = JSON.parse(data.utf8Data);
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} catch (e) {
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return;
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}
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const { type, body } = obj;
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switch (type) {
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case 'api': this.onApiRequest(body); break;
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case 'readNotification': this.onReadNotification(body); break;
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case 'subNote': this.onSubscribeNote(body, true); break;
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case 'sn': this.onSubscribeNote(body, true); break; // alias
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case 's': this.onSubscribeNote(body, false); break;
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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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// 個々のチャンネルではなくルートレベルでこれらのメッセージを受け取る理由は、
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// クライアントの事情を考慮したとき、入力フォームはノートチャンネルやメッセージのメインコンポーネントとは別
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// なこともあるため、それらのコンポーネントがそれぞれ各チャンネルに接続するようにするのは面倒なため。
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case 'typingOnChannel': this.typingOnChannel(body.channel); break;
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case 'typingOnMessaging': this.typingOnMessaging(body); break;
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}
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}
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@autobind
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private onBroadcastMessage(type: string, body: any) {
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this.sendMessageToWs(type, body);
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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 Users.findOne(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.token, payload.data).then(res => {
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this.sendMessageToWs(`api:${payload.id}`, { res });
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}).catch((e: ApiError) => {
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this.sendMessageToWs(`api:${payload.id}`, {
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error: {
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message: e.message,
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code: e.code,
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id: e.id,
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kind: e.kind,
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...(e.info ? { info: e.info } : {})
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}
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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, read: boolean) {
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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:${payload.id}`, this.onNoteStreamMessage);
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}
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if (this.user && read) {
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// TODO: クライアントでタイムライン読み込みなどすると、一度に大量のreadNoteが発生しクエリ数がすごいことになるので、ある程度まとめてreadNoteするようにする
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// 具体的には、この箇所ではキュー的な配列にread予定ノートを溜めておくに留めて、別の箇所で定期的にキューにあるノートを配列でreadNoteに渡すような実装にする
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readNote(this.user.id, payload.id);
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}
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}
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/**
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* 投稿購読解除要求時
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*/
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@autobind
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private onUnsubscribeNote(payload: any) {
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if (!payload.id) return;
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this.subscribingNotes[payload.id]--;
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if (this.subscribingNotes[payload.id] <= 0) {
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delete this.subscribingNotes[payload.id];
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this.subscriber.off(`noteStream:${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, pong } = payload;
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this.connectChannel(id, params, channel, pong);
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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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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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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, channel: string, pong = false) {
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if ((channels as any)[channel].requireCredential && this.user == null) {
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return;
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}
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// 共有可能チャンネルに接続しようとしていて、かつそのチャンネルに既に接続していたら無意味なので無視
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if ((channels as any)[channel].shouldShare && this.channels.some(c => c.chName === channel)) {
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return;
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}
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const ch: Channel = new (channels as any)[channel](id, this);
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this.channels.push(ch);
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ch.init(params);
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if (pong) {
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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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/**
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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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@autobind
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private typingOnChannel(channel: ChannelModel['id']) {
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if (this.user) {
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publishChannelStream(channel, 'typing', this.user.id);
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}
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}
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@autobind
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private typingOnMessaging(param: { partner?: User['id']; group?: UserGroup['id']; }) {
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if (this.user) {
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if (param.partner) {
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publishMessagingStream(param.partner, this.user.id, 'typing', this.user.id);
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} else if (param.group) {
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publishGroupMessagingStream(param.group, 'typing', this.user.id);
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}
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}
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}
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@autobind
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private async updateFollowing() {
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const followings = await Followings.find({
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where: {
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followerId: this.user!.id
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},
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select: ['followeeId']
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});
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this.following = new Set<string>(followings.map(x => x.followeeId));
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}
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@autobind
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private async updateMuting() {
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const mutings = await Mutings.find({
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where: {
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muterId: this.user!.id
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},
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select: ['muteeId']
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});
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this.muting = new Set<string>(mutings.map(x => x.muteeId));
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}
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@autobind
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private async updateFollowingChannels() {
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const followings = await ChannelFollowings.find({
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where: {
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followerId: this.user!.id
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},
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select: ['followeeId']
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});
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this.followingChannels = new Set<string>(followings.map(x => x.followeeId));
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}
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@autobind
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private async updateUserProfile() {
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this.userProfile = await UserProfiles.findOne({
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userId: this.user!.id
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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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for (const c of this.channels.filter(c => c.dispose)) {
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if (c.dispose) c.dispose();
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}
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if (this.followingClock) clearInterval(this.followingClock);
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if (this.mutingClock) clearInterval(this.mutingClock);
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if (this.followingChannelsClock) clearInterval(this.followingChannelsClock);
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if (this.userProfileClock) clearInterval(this.userProfileClock);
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}
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}
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