/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License */ package org.apache.toree.kernel.protocol.v5.handler import akka.actor.ActorRef import org.apache.toree.comm.{CommRegistrar, CommStorage} import org.apache.toree.communication.utils.OrderedSupport import org.apache.toree.kernel.protocol.v5.{SystemActorType, KernelMessage} import org.apache.toree.kernel.protocol.v5.content.{InputReply, CommOpen} import org.apache.toree.kernel.protocol.v5.kernel.{Utilities, ActorLoader} import org.apache.toree.kernel.protocol.v5 import org.apache.toree.utils.MessageLogSupport import play.api.libs.json.Json import scala.concurrent.{Promise, Future} /** * Represents the handler for both input request and input reply messages. Does * not extend BaseHandler because it does not send busy/idle status messages. * * @param actorLoader The actor loader to use for actor communication * @param responseMap The map used to maintain the links to responses */ class InputRequestReplyHandler( actorLoader: ActorLoader, responseMap: collection.mutable.Map[String, ActorRef] ) extends OrderedSupport with MessageLogSupport { // TODO: Is there a better way than storing actor refs? def receive = { case kernelMessage: KernelMessage => startProcessing() val kernelMessageType = kernelMessage.header.msg_type val inputRequestType = v5.MessageType.Outgoing.InputRequest.toString val inputReplyType = v5.MessageType.Incoming.InputReply.toString // Is this an outgoing message to request data? if (kernelMessageType == inputRequestType) { val session = kernelMessage.parentHeader.session responseMap(session) = sender logger.debug("Associating input request with session " + session) actorLoader.load(SystemActorType.KernelMessageRelay) ! kernelMessage // Is this an incoming response to a previous request for data? } else if (kernelMessageType == inputReplyType) { val session = kernelMessage.header.session val inputReply = Json.parse(kernelMessage.contentString).as[InputReply] logger.debug(s"Received input reply for session $session with value " + s"'${inputReply.value}'") responseMap(session) ! inputReply.value responseMap.remove(session) } finishedProcessing() } override def orderedTypes() : Seq[Class[_]] = {Seq(classOf[KernelMessage])} }