Validate url parameter in the web socket Handshake - Play scala - mysql

Question

I am developing a web socket method using scala language in Play Framework 2.3. I have the below code to validate the user in the web socket.
def speak = WebSocket.tryAcceptWithActor[JsValue, JsValue] { request =>
Future.successful(request.session.get("user") match {
case None => Left(Forbidden)
case Some(_) => Right(SpeakWs.props _)
})
}
But I want to validate "session_id" in the database that is passed from the web socket URL. My web socket call is like below.
ws://localhost:9000/speak?session_id=dsf76asdfasdeqrweqr34
I can get the session_id from the URL in the web socket as below.
def speak = WebSocket.tryAcceptWithActor[JsValue, JsValue] { request =>
var session_id = getSessionIdFromURL(request.uri)
...
}
def getSessionIdFromURL(url: String) = {
var splitedPath: Array[String] = new Array[String](2)
splitedPath = url.split("=")
val session_id: String = splitedPath(1)
}
How do I validate the session_id in the DB and do the handshake if it is valid?
(i.e) Instead of "request.session.get("user") match", how do I validate session_id?
I am new to the development. So I didn't know how to do this...
Anybody help me to do this?

Answer 1

Try
def speak = WebSocket.tryAcceptWithActor[JsValue, JsValue] { request =>
Future.successful(request.session.get("user") match {
case None => Left(Forbidden)
case Some(_) =>
validateSessionId(request.uri) match {
case true => Right(SpeakWs.props _)
case false => Left(Forbidden)
}
})
}
Also add another method to validate the session id in the database.
def validateSessionId(uri: String): Boolean = {
val sessionId = getSessionIdFromUrl(uri)
databaseConnector.findSessionById(sessiondId).map {
case true => true
case false => false
}
}
You haven't specified what driver you are using so you will have to figure out the implementation yourself I'm afraid. If you put these details in your question I can help with that too.
You don't need to initialise the splittedPath variable in your getSessionFromUrl method either, you can do something similar to below and the compiler will infer the type:
def getSessionIdFromURL(url: String) = {
val splitedPath = url.split("=")
splitedPath(1)
}