broadcast-operator.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.RemoteSocket = exports.BroadcastOperator = void 0;
const socket_1 = require("./socket");
const socket_io_parser_1 = require("socket.io-parser");
class BroadcastOperator {
constructor(adapter, rooms = new Set(), exceptRooms = new Set(), flags = {}) {
this.adapter = adapter;
this.rooms = rooms;
this.exceptRooms = exceptRooms;
this.flags = flags;
}
/**
* Targets a room when emitting.
*
* @param room
* @return a new BroadcastOperator instance
* @public
*/
to(room) {
const rooms = new Set(this.rooms);
if (Array.isArray(room)) {
room.forEach((r) => rooms.add(r));
}
else {
rooms.add(room);
}
return new BroadcastOperator(this.adapter, rooms, this.exceptRooms, this.flags);
}
/**
* Targets a room when emitting.
*
* @param room
* @return a new BroadcastOperator instance
* @public
*/
in(room) {
return this.to(room);
}
/**
* Excludes a room when emitting.
*
* @param room
* @return a new BroadcastOperator instance
* @public
*/
except(room) {
const exceptRooms = new Set(this.exceptRooms);
if (Array.isArray(room)) {
room.forEach((r) => exceptRooms.add(r));
}
else {
exceptRooms.add(room);
}
return new BroadcastOperator(this.adapter, this.rooms, exceptRooms, this.flags);
}
/**
* Sets the compress flag.
*
* @param compress - if `true`, compresses the sending data
* @return a new BroadcastOperator instance
* @public
*/
compress(compress) {
const flags = Object.assign({}, this.flags, { compress });
return new BroadcastOperator(this.adapter, this.rooms, this.exceptRooms, flags);
}
/**
* Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
* receive messages (because of network slowness or other issues, or because they’re connected through long polling
* and is in the middle of a request-response cycle).
*
* @return a new BroadcastOperator instance
* @public
*/
get volatile() {
const flags = Object.assign({}, this.flags, { volatile: true });
return new BroadcastOperator(this.adapter, this.rooms, this.exceptRooms, flags);
}
/**
* Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
*
* @return a new BroadcastOperator instance
* @public
*/
get local() {
const flags = Object.assign({}, this.flags, { local: true });
return new BroadcastOperator(this.adapter, this.rooms, this.exceptRooms, flags);
}
/**
* Emits to all clients.
*
* @return Always true
* @public
*/
emit(ev, ...args) {
if (socket_1.RESERVED_EVENTS.has(ev)) {
throw new Error(`"${ev}" is a reserved event name`);
}
// set up packet object
const data = [ev, ...args];
const packet = {
type: socket_io_parser_1.PacketType.EVENT,
data: data,
};
if ("function" == typeof data[data.length - 1]) {
throw new Error("Callbacks are not supported when broadcasting");
}
this.adapter.broadcast(packet, {
rooms: this.rooms,
except: this.exceptRooms,
flags: this.flags,
});
return true;
}
/**
* Gets a list of clients.
*
* @public
*/
allSockets() {
if (!this.adapter) {
throw new Error("No adapter for this namespace, are you trying to get the list of clients of a dynamic namespace?");
}
return this.adapter.sockets(this.rooms);
}
/**
* Returns the matching socket instances
*
* @public
*/
fetchSockets() {
return this.adapter
.fetchSockets({
rooms: this.rooms,
except: this.exceptRooms,
})
.then((sockets) => {
return sockets.map((socket) => {
if (socket instanceof socket_1.Socket) {
// FIXME the TypeScript compiler complains about missing private properties
return socket;
}
else {
return new RemoteSocket(this.adapter, socket);
}
});
});
}
/**
* Makes the matching socket instances join the specified rooms
*
* @param room
* @public
*/
socketsJoin(room) {
this.adapter.addSockets({
rooms: this.rooms,
except: this.exceptRooms,
}, Array.isArray(room) ? room : [room]);
}
/**
* Makes the matching socket instances leave the specified rooms
*
* @param room
* @public
*/
socketsLeave(room) {
this.adapter.delSockets({
rooms: this.rooms,
except: this.exceptRooms,
}, Array.isArray(room) ? room : [room]);
}
/**
* Makes the matching socket instances disconnect
*
* @param close - whether to close the underlying connection
* @public
*/
disconnectSockets(close = false) {
this.adapter.disconnectSockets({
rooms: this.rooms,
except: this.exceptRooms,
}, close);
}
}
exports.BroadcastOperator = BroadcastOperator;
/**
* Expose of subset of the attributes and methods of the Socket class
*/
class RemoteSocket {
constructor(adapter, details) {
this.id = details.id;
this.handshake = details.handshake;
this.rooms = new Set(details.rooms);
this.data = details.data;
this.operator = new BroadcastOperator(adapter, new Set([this.id]));
}
emit(ev, ...args) {
return this.operator.emit(ev, ...args);
}
/**
* Joins a room.
*
* @param {String|Array} room - room or array of rooms
* @public
*/
join(room) {
return this.operator.socketsJoin(room);
}
/**
* Leaves a room.
*
* @param {String} room
* @public
*/
leave(room) {
return this.operator.socketsLeave(room);
}
/**
* Disconnects this client.
*
* @param {Boolean} close - if `true`, closes the underlying connection
* @return {Socket} self
*
* @public
*/
disconnect(close = false) {
this.operator.disconnectSockets(close);
return this;
}
}
exports.RemoteSocket = RemoteSocket;