| /* |
| * 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.gearpump.cluster.scheduler |
| |
| import akka.actor.{Actor, ActorRef} |
| import org.apache.gearpump.TimeStamp |
| import org.apache.gearpump.cluster.MasterToWorker.{UpdateResourceFailed, UpdateResourceSucceed, WorkerRegistered} |
| import org.apache.gearpump.cluster.WorkerToMaster.ResourceUpdate |
| import org.apache.gearpump.cluster.master.Master.WorkerTerminated |
| import org.apache.gearpump.cluster.scheduler.Scheduler.ApplicationFinished |
| import org.apache.gearpump.cluster.worker.WorkerId |
| import org.apache.gearpump.util.LogUtil |
| import org.slf4j.Logger |
| |
| import scala.collection.mutable |
| |
| /** |
| * Scheduler schedule resource for different applications. |
| */ |
| abstract class Scheduler extends Actor { |
| val LOG: Logger = LogUtil.getLogger(getClass) |
| protected var resources = new mutable.HashMap[WorkerId, (ActorRef, Resource)] |
| |
| def handleScheduleMessage: Receive = { |
| case WorkerRegistered(id, _) => |
| if (!resources.contains(id)) { |
| LOG.info(s"Worker $id added to the scheduler") |
| resources.put(id, (sender, Resource.empty)) |
| } |
| case update@ResourceUpdate(worker, workerId, resource) => |
| LOG.info(s"$update...") |
| if (resources.contains(workerId)) { |
| val resourceReturned = resource > resources.get(workerId).get._2 |
| resources.update(workerId, (worker, resource)) |
| if (resourceReturned) { |
| allocateResource() |
| } |
| sender ! UpdateResourceSucceed |
| } |
| else { |
| sender ! UpdateResourceFailed( |
| s"ResourceUpdate failed! The worker $workerId has not been registered into master") |
| } |
| case WorkerTerminated(workerId) => |
| if (resources.contains(workerId)) { |
| resources -= workerId |
| } |
| case ApplicationFinished(appId) => |
| doneApplication(appId) |
| } |
| |
| def allocateResource(): Unit |
| |
| def doneApplication(appId: Int): Unit |
| } |
| |
| object Scheduler { |
| case class PendingRequest( |
| appId: Int, appMaster: ActorRef, request: ResourceRequest, timeStamp: TimeStamp) |
| |
| case class ApplicationFinished(appId: Int) |
| } |