I am trying to implement websocket using akka actors in play framework.
Actors/FileUploaderActor.scala:
class FileUploaderActor extends Actor{
override def receive: Receive = {
case UploadFile(billerId, filename, subCategory, count, dueDate) =>
val fileOberverActor = ActorSystem().actorOf(Props[FileObserverActor])
val billerData =
BillerFileUploadMetaData(billerId,filename,count,"ACTIVE",
new java.sql.Timestamp(new
java.util.Date().getTime),subCategory,dueDate)
val sparkSession = SparkContextHelper.sparkSession;
import sparkSession.implicits._
val rdd = sparkSession.sparkContext.parallelize(Seq(billerData))
val df = rdd.toDF()
df.write.format("org.apache.spark.sql.cassandra").options(Map("keyspace"
-> "billerplatform_schema", "table" ->
"biller_file_uploads")).mode(SaveMode.Append).save
fileOberverActor ! FileUploaded(filename, count)
}}
Actors/FileObserverActor.scala:
class FileObserverActor(out: ActorRef) extends Actor{
def receive = {
case FileUploaded(fileName, totalRecords) =>
out ! ("Got the file " + fileName)
}
}
object FileObserverActor{
def props(out: ActorRef) = Props(new FileObserverActor(out))}
controller/HomeController.scala:
def socket = WebSocket.accept[String, String] { request =>
ActorFlow.actorRef(out => FileObserverActor.props(out))
}
I have created a companion object for "FileObserverActor" because its
needed to establish a connection between controller and FileObserverActor
through websocket.
Now i also want to send message to "FileObserverActor" from
"FileUploadActor", but i couldnt create a instance from "FileUploadActor"
since the "FileObserverActor" is parameterised with "out:ActorRef" for
websocket connection. Now how can i send a message to "FileObserverActor"
from "FileUploadActor" ?
Stack trace:
java.lang.IllegalArgumentException: no matching constructor found on class
Actors.FileObserverActor for arguments []
at akka.util.Reflect$.error$1(Reflect.scala:81)
at akka.util.Reflect$.findConstructor(Reflect.scala:105)
at
akka.actor.NoArgsReflectConstructor.<init>(IndirectActorProducer.scala:103)
at akka.actor.IndirectActorProducer$.apply(IndirectActorProducer.scala:60)
at akka.actor.Props.producer(Props.scala:131)
at akka.actor.Props.<init>(Props.scala:144)
at akka.actor.Props$.apply(Props.scala:86)
at
Actors.FileUploaderActor$$anonfun$receive$1.applyOrElse(FileUploaderActor.scala:15)
at akka.actor.Actor$class.aroundReceive(Actor.scala:497)
at Actors.FileUploaderActor.aroundReceive(FileUploaderActor.scala:10)
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