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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | 1x 22x 22x 22x 22x 22x 9x 9x 9x 9x 9x 1x 1x 9x 2x 1x 1x 1x 1x 1x 2x 18x 18x 18x 11x 11x 11x 6x 6x 11x 11x 5x 4x 4x 9x 1x 3x 5x 1x 1x 1x 1x 1x 1x 18x 13x 13x 13x 11x 1x 10x 18x 1x | 'use strict'; const RTWrapper = require('./abstract/realtime'); class SocketIO extends RTWrapper { constructor(host, options = {}) { super(host, options); Iif (typeof host !== 'string' || host === '') { throw new Error('host is required'); } this.socket = null; this.forceDisconnect = false; this.eventsWrapper = {}; } /** * * @returns {Promise<any>} */ connect () { return new Promise((resolve, reject) => { super.connect(); this.socket = window.io((this.ssl ? 'https://' : 'http://') + this.host + ':' + this.port, { reconnection: this.autoReconnect, reconnectionDelay: this.reconnectionDelay, forceNew: true }); this.socket.on('connect', () => resolve(this.clientConnected())); this.socket.on('connect_error', error => { this.clientNetworkError(error); reject(error); }); this.socket.on('disconnect', () => { if (this.forceDisconnect) { this.clientDisconnected(); } else { const error = new Error('An error occurred, kuzzle may not be ready yet'); error.status = 500; this.clientNetworkError(error); reject(error); } this.forceDisconnect = false; }); }); } /** * Registers a callback on an event. * * @param {string} event * @param {function} callback * @param {boolean} once */ addListener (event, callback, once = false) { this._addEventWrapper(event, callback, once); super.addListener(event, callback, once); return this; } prependListener (event, callback, once = false) { this._addEventWrapper(event, callback, once); return super.prependListener(event, callback, once); } /** * Unregisters a callback from an event. * * @param {string} event * @param {function} callback */ removeListener (event, callback) { Eif (this.eventsWrapper[event]) { this.eventsWrapper[event].listeners.delete(callback); if (this.eventsWrapper[event].listeners.size === 0) { this.socket.off(event, this.eventsWrapper[event].wrapper); delete this.eventsWrapper[event]; } super.removeListener(event, callback); } return this; } /** * Unregisters all listeners either from an event, or from all events * * @param {string} [event] */ removeAllListeners (event) { if (event !== undefined) { Eif (this.eventsWrapper[event] !== undefined) { for (const listener of this.eventsWrapper[event].listeners) { this.removeListener(event, listener); } } } else { for (const _event of Object.keys(this.eventsWrapper)) { this.removeAllListeners(_event); } } return this; } /** * Sends a payload to the connected server * * @param {Object} payload */ send(payload) { this.socket.emit('kuzzle', payload); } /** * Closes the connection */ close () { this.forceDisconnect = true; this.state = 'offline'; this.socket.close(); this.socket = null; super.close(); } _addEventWrapper (event, callback, once = false) { if (!this.eventsWrapper[event]) { const wrapper = (...args) => this.emit(event, ...args); this.eventsWrapper[event] = { wrapper, listeners: new Set() }; if (['connect', 'connect_error', 'disconnect'].indexOf(event) === -1) { if (once) { this.socket.once(event, wrapper); } else { this.socket.on(event, wrapper); } } } this.eventsWrapper[event].listeners.add(callback); } } module.exports = SocketIO; |