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318
src/client/app/common/scripts/stream.ts
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318
src/client/app/common/scripts/stream.ts
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import autobind from 'autobind-decorator';
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import { EventEmitter } from 'eventemitter3';
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import * as ReconnectingWebsocket from 'reconnecting-websocket';
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import { wsUrl } from '../../config';
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import MiOS from '../../mios';
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/**
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* Misskey stream connection
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*/
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export default class Stream extends EventEmitter {
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private stream: ReconnectingWebsocket;
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private state: string;
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private buffer: any[];
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private sharedConnections: SharedConnection[] = [];
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private nonSharedConnections: NonSharedConnection[] = [];
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constructor(os: MiOS) {
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super();
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this.state = 'initializing';
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this.buffer = [];
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const user = os.store.state.i;
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this.stream = new ReconnectingWebsocket(wsUrl + (user ? `?i=${user.token}` : ''));
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this.stream.addEventListener('open', this.onOpen);
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this.stream.addEventListener('close', this.onClose);
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this.stream.addEventListener('message', this.onMessage);
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if (user) {
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const main = this.useSharedConnection('main');
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// 自分の情報が更新されたとき
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main.on('meUpdated', i => {
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os.store.dispatch('mergeMe', i);
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});
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main.on('readAllNotifications', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadNotification: false
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});
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});
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main.on('unreadNotification', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadNotification: true
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});
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});
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main.on('readAllMessagingMessages', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadMessagingMessage: false
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});
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});
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main.on('unreadMessagingMessage', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadMessagingMessage: true
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});
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});
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main.on('unreadMention', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadMentions: true
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});
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});
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main.on('readAllUnreadMentions', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadMentions: false
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});
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});
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main.on('unreadSpecifiedNote', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadSpecifiedNotes: true
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});
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});
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main.on('readAllUnreadSpecifiedNotes', () => {
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os.store.dispatch('mergeMe', {
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hasUnreadSpecifiedNotes: false
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});
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});
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main.on('clientSettingUpdated', x => {
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os.store.commit('settings/set', {
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key: x.key,
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value: x.value
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});
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});
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main.on('homeUpdated', x => {
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os.store.commit('settings/setHome', x);
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});
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main.on('mobileHomeUpdated', x => {
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os.store.commit('settings/setMobileHome', x);
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});
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main.on('widgetUpdated', x => {
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os.store.commit('settings/setWidget', {
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id: x.id,
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data: x.data
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});
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});
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// トークンが再生成されたとき
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// このままではMisskeyが利用できないので強制的にサインアウトさせる
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main.on('myTokenRegenerated', () => {
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alert('%i18n:common.my-token-regenerated%');
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os.signout();
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});
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}
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}
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public useSharedConnection = (channel: string): SharedConnection => {
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const existConnection = this.sharedConnections.find(c => c.channel === channel);
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if (existConnection) {
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existConnection.use();
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return existConnection;
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} else {
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const connection = new SharedConnection(this, channel);
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connection.use();
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this.sharedConnections.push(connection);
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return connection;
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}
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}
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@autobind
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public removeSharedConnection(connection: SharedConnection) {
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this.sharedConnections = this.sharedConnections.filter(c => c.id !== connection.id);
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}
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public connectToChannel = (channel: string, params?: any): NonSharedConnection => {
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const connection = new NonSharedConnection(this, channel, params);
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this.nonSharedConnections.push(connection);
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return connection;
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}
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@autobind
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public disconnectToChannel(connection: NonSharedConnection) {
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this.nonSharedConnections = this.nonSharedConnections.filter(c => c.id !== connection.id);
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}
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/**
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* Callback of when open connection
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*/
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@autobind
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private onOpen() {
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const isReconnect = this.state == 'reconnecting';
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this.state = 'connected';
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this.emit('_connected_');
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// バッファーを処理
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const _buffer = [].concat(this.buffer); // Shallow copy
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this.buffer = []; // Clear buffer
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_buffer.forEach(data => {
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this.send(data); // Resend each buffered messages
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});
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// チャンネル再接続
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if (isReconnect) {
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this.sharedConnections.forEach(c => {
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c.connect();
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});
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this.nonSharedConnections.forEach(c => {
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c.connect();
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});
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}
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}
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/**
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* Callback of when close connection
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*/
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@autobind
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private onClose() {
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this.state = 'reconnecting';
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this.emit('_disconnected_');
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}
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/**
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* Callback of when received a message from connection
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*/
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@autobind
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private onMessage(message) {
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const { type, body } = JSON.parse(message.data);
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if (type == 'channel') {
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const id = body.id;
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const connection = this.sharedConnections.find(c => c.id === id) || this.nonSharedConnections.find(c => c.id === id);
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connection.emit(body.type, body.body);
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} else {
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this.emit(type, body);
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}
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}
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/**
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* Send a message to connection
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*/
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@autobind
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public send(typeOrPayload, payload?) {
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const data = payload === undefined ? typeOrPayload : {
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type: typeOrPayload,
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body: payload
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};
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// まだ接続が確立されていなかったらバッファリングして次に接続した時に送信する
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if (this.state != 'connected') {
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this.buffer.push(data);
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return;
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}
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this.stream.send(JSON.stringify(data));
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}
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/**
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* Close this connection
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*/
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@autobind
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public close() {
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this.stream.removeEventListener('open', this.onOpen);
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this.stream.removeEventListener('message', this.onMessage);
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}
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}
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abstract class Connection extends EventEmitter {
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public channel: string;
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public id: string;
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protected params: any;
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protected stream: Stream;
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constructor(stream: Stream, channel: string, params?: any) {
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super();
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this.stream = stream;
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this.channel = channel;
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this.params = params;
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this.id = Math.random().toString();
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this.connect();
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}
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@autobind
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public connect() {
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this.stream.send('connect', {
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channel: this.channel,
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id: this.id,
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params: this.params
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});
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}
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@autobind
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public send(typeOrPayload, payload?) {
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const data = payload === undefined ? typeOrPayload : {
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type: typeOrPayload,
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body: payload
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};
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this.stream.send('channel', {
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id: this.id,
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body: data
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});
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}
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public abstract dispose: () => void;
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}
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class SharedConnection extends Connection {
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private users = 0;
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private disposeTimerId: any;
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constructor(stream: Stream, channel: string) {
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super(stream, channel);
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}
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@autobind
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public use() {
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this.users++;
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// タイマー解除
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if (this.disposeTimerId) {
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clearTimeout(this.disposeTimerId);
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this.disposeTimerId = null;
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}
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}
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@autobind
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public dispose() {
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this.users--;
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// そのコネクションの利用者が誰もいなくなったら
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if (this.users === 0) {
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// また直ぐに再利用される可能性があるので、一定時間待ち、
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// 新たな利用者が現れなければコネクションを切断する
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this.disposeTimerId = setTimeout(() => {
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this.disposeTimerId = null;
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this.removeAllListeners();
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this.stream.send('disconnect', { id: this.id });
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this.stream.removeSharedConnection(this);
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}, 3000);
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}
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}
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}
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class NonSharedConnection extends Connection {
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constructor(stream: Stream, channel: string, params?: any) {
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super(stream, channel, params);
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}
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@autobind
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public dispose() {
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this.removeAllListeners();
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this.stream.send('disconnect', { id: this.id });
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this.stream.disconnectToChannel(this);
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}
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}
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