| /* |
| * 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.samza.runtime; |
| |
| import java.time.Duration; |
| import java.util.List; |
| import org.apache.samza.SamzaException; |
| import org.apache.samza.application.descriptors.ApplicationDescriptorUtil; |
| import org.apache.samza.application.SamzaApplication; |
| import org.apache.samza.config.Config; |
| import org.apache.samza.config.JobConfig; |
| import org.apache.samza.context.ExternalContext; |
| import org.apache.samza.execution.JobPlanner; |
| import org.apache.samza.execution.RemoteJobPlanner; |
| import org.apache.samza.job.ApplicationStatus; |
| import org.apache.samza.job.JobRunner; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.samza.job.ApplicationStatus.*; |
| |
| |
| /** |
| * This class implements the {@link ApplicationRunner} that runs the applications in a remote cluster |
| */ |
| public class RemoteApplicationRunner implements ApplicationRunner { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(RemoteApplicationRunner.class); |
| private static final long DEFAULT_SLEEP_DURATION_MS = 2000; |
| |
| private final SamzaApplication app; |
| private final Config config; |
| |
| /** |
| * Constructors a {@link RemoteApplicationRunner} to run the {@code app} with the {@code config}. |
| * |
| * @param app application to run |
| * @param config configuration for the application |
| */ |
| public RemoteApplicationRunner(SamzaApplication app, Config config) { |
| this.app = app; |
| this.config = config; |
| } |
| |
| @Override |
| public void run(ExternalContext externalContext) { |
| if (new JobConfig(config).getConfigLoaderFactory().isPresent()) { |
| JobRunner runner = new JobRunner(JobPlanner.generateSingleJobConfig(config)); |
| runner.submit(); |
| return; |
| } |
| |
| // TODO SAMZA-2432: Clean this up once SAMZA-2405 is completed when legacy flow is removed. |
| try { |
| JobPlanner planner = new RemoteJobPlanner(ApplicationDescriptorUtil.getAppDescriptor(app, config)); |
| List<JobConfig> jobConfigs = planner.prepareJobs(); |
| if (jobConfigs.isEmpty()) { |
| throw new SamzaException("No jobs to run."); |
| } |
| |
| // 3. submit jobs for remote execution |
| jobConfigs.forEach(jobConfig -> { |
| LOG.info("Starting job {} with config {}", jobConfig.getName(), jobConfig); |
| JobRunner runner = new JobRunner(jobConfig); |
| runner.run(true); |
| }); |
| } catch (Throwable t) { |
| throw new SamzaException("Failed to run application", t); |
| } |
| } |
| |
| @Override |
| public void kill() { |
| // since currently we only support single actual remote job, we can get its status without |
| // building the execution plan. |
| try { |
| JobConfig jc = new JobConfig(JobPlanner.generateSingleJobConfig(config)); |
| LOG.info("Killing job {}", jc.getName()); |
| JobRunner runner = new JobRunner(jc); |
| runner.kill(); |
| } catch (Throwable t) { |
| throw new SamzaException("Failed to kill application", t); |
| } |
| } |
| |
| @Override |
| public ApplicationStatus status() { |
| // since currently we only support single actual remote job, we can get its status without |
| // building the execution plan |
| try { |
| JobConfig jc = new JobConfig(JobPlanner.generateSingleJobConfig(config)); |
| return getApplicationStatus(jc); |
| } catch (Throwable t) { |
| throw new SamzaException("Failed to get status for application", t); |
| } |
| } |
| |
| @Override |
| public void waitForFinish() { |
| waitForFinish(Duration.ofMillis(0)); |
| } |
| |
| @Override |
| public boolean waitForFinish(Duration timeout) { |
| JobConfig jobConfig = new JobConfig(JobPlanner.generateSingleJobConfig(config)); |
| boolean finished = true; |
| long timeoutInMs = timeout.toMillis(); |
| long startTimeInMs = System.currentTimeMillis(); |
| long timeElapsed = 0L; |
| |
| long sleepDurationInMs = timeoutInMs < 1 ? |
| DEFAULT_SLEEP_DURATION_MS : Math.min(timeoutInMs, DEFAULT_SLEEP_DURATION_MS); |
| ApplicationStatus status; |
| |
| try { |
| while (timeoutInMs < 1 || timeElapsed <= timeoutInMs) { |
| status = getApplicationStatus(jobConfig); |
| if (status == SuccessfulFinish || status == UnsuccessfulFinish) { |
| LOG.info("Application finished with status {}", status); |
| break; |
| } |
| |
| Thread.sleep(sleepDurationInMs); |
| timeElapsed = System.currentTimeMillis() - startTimeInMs; |
| } |
| |
| if (timeElapsed > timeoutInMs) { |
| LOG.warn("Timed out waiting for application to finish."); |
| finished = false; |
| } |
| } catch (Exception e) { |
| LOG.error("Error waiting for application to finish", e); |
| throw new SamzaException(e); |
| } |
| |
| return finished; |
| } |
| |
| /* package private */ ApplicationStatus getApplicationStatus(JobConfig jobConfig) { |
| JobRunner runner = new JobRunner(jobConfig); |
| ApplicationStatus status = runner.status(); |
| LOG.debug("Status is {} for job {}", new Object[]{status, jobConfig.getName()}); |
| return status; |
| } |
| } |