Subscribe to channel on a server about clusterws HOT 4 CLOSED

The channels are designed to have more then just 1 subscriber (you can have only one subscriber as well). It does not matter on which worker will the channel end up as pub sub system is designed to be able to send message from any server to the right channel.

One way to listen on the publish event on the server is onPublish event documentation is in here. However i am not sure it will work out well as publish system will not process with message if no client on that worker subscribed to that channel. (i need more information about the app and how you plan it to work)

Second way is to use onMessageFromWorker from the same documentation in here and standard 1on1 communication with client. For example:

function Worker() { 
    const wss = this.wss
    const server = this.server 
     
    // listen on messages from workers
     wss.setMiddleware('onMessageFromWorker', (message) => {
          // execute any code on message form workers
     })

    // Listen on connections to websocket server
    wss.on('connection', (socket) => {
        socket.on('matchmaking', (message) => {
          // send message to all workers  NOTE: including itself
           wss.publishToWorkers(message)
         })
    })
}

That is actually a good point you have provided, i will add functionality to subscribe workers to the channels (only with ability to listen on messages which are send through the channels)

from clusterws.

Yeah, I found the publishToWorkers while toying around with the problem. It works, but it feels like a dirty hack and its not very readable. I am glad this functionality is coming though 👍

from clusterws.

I have released new version 3.1.0 the functionality to listen on channels is added there. Check this for more info about it.

from clusterws.

Close issue as completed.

from clusterws.