| /* |
| * 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.flink.streaming.connectors.kafka.testutils; |
| |
| import org.apache.flink.api.common.JobID; |
| import org.apache.flink.runtime.client.JobStatusMessage; |
| import org.apache.flink.runtime.instance.ActorGateway; |
| import org.apache.flink.runtime.messages.JobManagerMessages; |
| |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| |
| import scala.concurrent.Await; |
| import scala.concurrent.Future; |
| import scala.concurrent.duration.FiniteDuration; |
| |
| /** |
| * Utilities for communicating with a jobmanager through a {@link ActorGateway}. |
| */ |
| public class JobManagerCommunicationUtils { |
| |
| private static final FiniteDuration askTimeout = new FiniteDuration(30, TimeUnit.SECONDS); |
| |
| public static void waitUntilNoJobIsRunning(ActorGateway jobManager) throws Exception { |
| while (true) { |
| // find the jobID |
| Future<Object> listResponse = jobManager.ask( |
| JobManagerMessages.getRequestRunningJobsStatus(), askTimeout); |
| |
| Object result = Await.result(listResponse, askTimeout); |
| List<JobStatusMessage> jobs = ((JobManagerMessages.RunningJobsStatus) result).getStatusMessages(); |
| |
| if (jobs.isEmpty()) { |
| return; |
| } |
| |
| Thread.sleep(50); |
| } |
| } |
| |
| public static void waitUntilJobIsRunning(ActorGateway jobManager, String name) throws Exception { |
| while (true) { |
| Future<Object> listResponse = jobManager.ask( |
| JobManagerMessages.getRequestRunningJobsStatus(), |
| askTimeout); |
| |
| List<JobStatusMessage> jobs; |
| try { |
| Object result = Await.result(listResponse, askTimeout); |
| jobs = ((JobManagerMessages.RunningJobsStatus) result).getStatusMessages(); |
| } |
| catch (Exception e) { |
| throw new Exception("Could not wait for job to start - failed to retrieve running jobs from the JobManager.", e); |
| } |
| |
| // see if the running jobs contain the requested job |
| for (JobStatusMessage job : jobs) { |
| if (job.getJobName().equals(name)) { |
| return; |
| } |
| } |
| |
| Thread.sleep(50); |
| } |
| } |
| |
| public static void cancelCurrentJob(ActorGateway jobManager) throws Exception { |
| cancelCurrentJob(jobManager, null); |
| } |
| |
| public static void cancelCurrentJob(ActorGateway jobManager, String name) throws Exception { |
| JobStatusMessage status = null; |
| |
| for (int i = 0; i < 200; i++) { |
| // find the jobID |
| Future<Object> listResponse = jobManager.ask( |
| JobManagerMessages.getRequestRunningJobsStatus(), |
| askTimeout); |
| |
| List<JobStatusMessage> jobs; |
| try { |
| Object result = Await.result(listResponse, askTimeout); |
| jobs = ((JobManagerMessages.RunningJobsStatus) result).getStatusMessages(); |
| } |
| catch (Exception e) { |
| throw new Exception("Could not cancel job - failed to retrieve running jobs from the JobManager.", e); |
| } |
| |
| if (jobs.isEmpty()) { |
| // try again, fall through the loop |
| Thread.sleep(50); |
| } |
| else if (jobs.size() == 1) { |
| status = jobs.get(0); |
| } |
| else if (name != null) { |
| for (JobStatusMessage msg: jobs) { |
| if (msg.getJobName().equals(name)) { |
| status = msg; |
| } |
| } |
| if (status == null) { |
| throw new Exception("Could not cancel job - no job matched expected name = '" + name + "' in " + jobs); |
| } |
| } else { |
| String jobNames = ""; |
| for (JobStatusMessage jsm: jobs) { |
| jobNames += jsm.getJobName() + ", "; |
| } |
| throw new Exception("Could not cancel job - more than one running job: " + jobNames); |
| } |
| } |
| |
| if (status == null) { |
| throw new Exception("Could not cancel job - no running jobs"); |
| } |
| else if (status.getJobState().isGloballyTerminalState()) { |
| throw new Exception("Could not cancel job - job is not running any more"); |
| } |
| |
| JobID jobId = status.getJobId(); |
| |
| Future<Object> response = jobManager.ask(new JobManagerMessages.CancelJob(jobId), askTimeout); |
| try { |
| Await.result(response, askTimeout); |
| } |
| catch (Exception e) { |
| throw new Exception("Sending the 'cancel' message failed.", e); |
| } |
| } |
| } |