| /* |
| * 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.client |
| |
| import akka.actor.ActorRef |
| import akka.pattern.ask |
| import akka.util.Timeout |
| import org.apache.gearpump.cluster.ClientToMaster.{RegisterAppResultListener, ResolveAppId, ShutdownApplication} |
| import org.apache.gearpump.cluster.MasterToClient._ |
| import org.apache.gearpump.cluster.client.RunningApplication._ |
| import org.apache.gearpump.util.{ActorUtil, LogUtil} |
| import org.slf4j.Logger |
| import java.time.Duration |
| import java.util.concurrent.TimeUnit |
| |
| import scala.concurrent.ExecutionContext.Implicits.global |
| import scala.concurrent.Future |
| import scala.concurrent.duration._ |
| import scala.util.{Failure, Success} |
| |
| class RunningApplication(val appId: Int, master: ActorRef, timeout: Timeout) { |
| lazy val appMaster: Future[ActorRef] = resolveAppMaster(appId) |
| |
| def shutDown(): Unit = { |
| val result = ActorUtil.askActor[ShutdownApplicationResult](master, |
| ShutdownApplication(appId), timeout) |
| result.appId match { |
| case Success(_) => |
| case Failure(ex) => throw ex |
| } |
| } |
| |
| /** |
| * This function will block until the application finished or failed. |
| * If failed, an exception will be thrown out |
| */ |
| def waitUntilFinish(): Unit = { |
| this.waitUntilFinish(INF_DURATION) |
| } |
| |
| def waitUntilFinish(duration: Duration): Unit = { |
| val result = ActorUtil.askActor[ApplicationResult](master, |
| RegisterAppResultListener(appId), new Timeout(duration.getSeconds, TimeUnit.SECONDS)) |
| result match { |
| case failed: ApplicationFailed => |
| throw failed.error |
| case _ => |
| LOG.info(s"Application $appId succeeded") |
| } |
| } |
| |
| def askAppMaster[T](msg: Any): Future[T] = { |
| appMaster.flatMap(_.ask(msg)(timeout).asInstanceOf[Future[T]]) |
| } |
| |
| private def resolveAppMaster(appId: Int): Future[ActorRef] = { |
| master.ask(ResolveAppId(appId))(timeout). |
| asInstanceOf[Future[ResolveAppIdResult]].map(_.appMaster.get) |
| } |
| } |
| |
| object RunningApplication { |
| private val LOG: Logger = LogUtil.getLogger(getClass) |
| // This magic number is derived from Akka's configuration, which is the maximum delay |
| private val INF_DURATION = Duration.ofSeconds(2147482) |
| } |
| |