How to pass socket client connection from nestjs service - websocket

Question

I want to pass the connected socket client to nest js service. I referred to this question
https://stackoverflow.com/question.....but I can't understand how to pass the client:Socket from my service.
I have a bull queue which handles some file processing tasks. once the file processing is completed. I want to notify that to the user who sent that file. below is my WebSocket gateway. In here notifyJobStatus is getting called once the job is done. but I want to send it to a particular client. for that, I need to access the client from my service. then I can modify the method to something like this notifyJobStatus(status: string, client: Socket).please correct me if this approach is wrong.
export class NotificationsService
implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect
{
#WebSocketServer() server: Server;
private readonly logger = new Logger(NotificationsService.name);
notifyJobStatus(status: string) {
//client.broadcast.to(client.id).emit('JobStatus', status);
this.server.emit('JobStatus', status);
}
afterInit() {
this.logger.log('Websocket Server Started,Listening on Port:3006');
}
handleDisconnect(client: Socket) {
console.log(`Client disconnected: ${client.id}`);
}
handleConnection(client: Socket, ...args: any[]) {
console.log(`Client connected: ${client.id}`);
}
}

Answer 1

If this is your gateway, I guess it is not setup properly. Gateway in nestjs takes the form below:
#WebSocketGateway()
export class NotificationsService
implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect
{
#WebSocketServer() server: Server;
private readonly logger = new Logger(NotificationsService.name);
#SubscribeMessage('event to listen to')
notifyJobStatus(status: string) {
//client.broadcast.to(client.id).emit('JobStatus', status);
this.server.emit('JobStatus', status);
}
afterInit() {
this.logger.log('Websocket Server Started,Listening on Port:3006');
}
handleDisconnect(client: Socket) {
console.log(`Client disconnected: ${client.id}`);
}
handleConnection(client: Socket, ...args: any[]) {
console.log(`Client connected: ${client.id}`);
}
}
Meanwhile, since you are using a bull queue to process the job, you can emit the job status from the bull queue consumer that processes the job, which #SubscribeMessage('event to listen to') will listen on, and the notifyJobStatus method will be called to send the status to the user.