sailsjs - what's the best way to track rooms at app level - websocket

Question

sails.sockets.rooms() and sails.sockets.socketRooms() are both deprecated
In the doc:
This method is deprecated. Please keep track of your rooms in app-level code.
I am new to SailsJS.
Question 1: How could I get started with that? Where should I declare my room array or hash?
Question 2: How do I get the list of the clients connected?

Answer 1

Here the way I did it. Hope this helps a little, although I am not confident it's perfect, BUT it worked for me. Feel free to suggest corrections, enhancements.
I declared a sails.rooms = {}; in the controller (Question 1) where I needed it most. (You can name it whatever you want.)
sails. gives it access across the application.
In the controller
/**
* Socket connection
*/
connect: function(req, res) {
// Check if it's socket connection
if (!req.isSocket) { return res.badRequest(); }
// label the room to ROOM_NAME
sails.sockets.join(req, ROOM_NAME);
/**
* Manage my `sails.rooms` HERE
* e.g.
*/
if (!sails.rooms[ROOM_NAME]) {
sails.rooms[ROOM_NAME] = {};
}
sails.rooms[ROOM_NAME][req.socket.id] = HUMAN_FRIENDLY_LABEL;
}
I end up with a JSON that looks like this:
{
{ "room1" :
{
"ksadj1234clkjnelckjna" : "john",
"eroiucnw934cneo3vra09" : "marie"
}
},
{ "room2" :
{
"kslaksdjfnasjdkfa9jna" : "antoine",
"qweuiqcnw934cne3vra09" : "michelle"
}
}
}
In config/sockets.js, I manage disconnections
afterDisconnect: function(session, socket, cb) {
console.log(socket.id + " disconnected");
/**
* Manage sails.rooms HERE
* e.g.
*/
for (r in sails.rooms) {
delete sails.rooms[r][socket.id];
//
// YOUR CODE
//
}
return cb();
},
NOTE: that you can list the WebSockets in a certain room using sails.io.sockets.in(ROOM_NAME). This should also help to purge the sails.rooms from disconnected sockets.