Event listener on Alamofire - ios

Question

I used to build my app on Firebase before and there was a method which listens for value updates, something like this:
refHandle = postRef.observeEventType(FIRDataEventType.Value, withBlock: { (snapshot) in
let postDict = snapshot.value as! [String : AnyObject]
// ...
})
Now I'm not using firebase anymore, I'm using deployd and I use Alamofire to retrieve data in JSON. I wonder if there is an event listener in Alamofire that can execute code if the value is changing in the database, instead of retrieving the value every 2 minutes.
Thanks.

Answer 1

Okay so I found this thing called TRVSEventSource which is meant for handling SSE events.
So I added the following code after adding the header files and bridging them like this:
let configs = NSURLSessionConfiguration.defaultSessionConfiguration()
configs.HTTPAdditionalHeaders = ["Accept" : "text/event-stream"]
let eventsource = TRVSEventSource(URL: NSURL(string: "https://app.firebaseio.com/about.json?auth=<Your Database Secret>"), sessionConfiguration: configs)
eventsource.delegate = self
eventsource.open()
After that using the TRVSEventSourceDelegate, I added this delegate to get the information:
func eventSource(eventSource: TRVSEventSource!, didReceiveEvent event: TRVSServerSentEvent!) {
do{
let data = try NSJSONSerialization.JSONObjectWithData(event.data, options: .MutableContainers)
print(data)
}
catch let error
{
print(error)
}
}
The following prints something like this {
data = {
desc = "My Data";
};
path = "/";
}
And with that also tells you within what path of the JSOn file has been edited or added, idk how to handle things separately and stuff but I think you can handle the rest XD. Not a good answer but I hope I helped XD (First time properly answering something)