| /* |
| * 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.beam.runners.jet; |
| |
| import com.hazelcast.jet.IMapJet; |
| import com.hazelcast.jet.Job; |
| import com.hazelcast.jet.core.JobStatus; |
| import java.io.IOException; |
| import java.util.Objects; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.CompletionException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| import javax.annotation.Nonnull; |
| import org.apache.beam.runners.core.metrics.MetricUpdates; |
| import org.apache.beam.runners.jet.metrics.JetMetricResults; |
| import org.apache.beam.sdk.PipelineResult; |
| import org.apache.beam.sdk.metrics.MetricResults; |
| import org.joda.time.Duration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** Jet specific implementation of {@link PipelineResult}. */ |
| public class JetPipelineResult implements PipelineResult { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(JetRunner.class); |
| |
| private final Job job; |
| private final JetMetricResults metricResults; |
| private volatile State terminalState; |
| |
| private CompletableFuture<Void> completionFuture; |
| |
| JetPipelineResult(@Nonnull Job job, @Nonnull IMapJet<String, MetricUpdates> metricsAccumulator) { |
| this.job = Objects.requireNonNull(job); |
| // save the terminal state when the job completes because the `job` instance will become invalid |
| // afterwards |
| metricResults = new JetMetricResults(metricsAccumulator); |
| } |
| |
| void setCompletionFuture(CompletableFuture<Void> completionFuture) { |
| this.completionFuture = completionFuture; |
| } |
| |
| void freeze(Throwable throwable) { |
| metricResults.freeze(); |
| terminalState = throwable != null ? State.FAILED : State.DONE; |
| } |
| |
| @Override |
| public State getState() { |
| if (terminalState != null) { |
| return terminalState; |
| } |
| JobStatus status = job.getStatus(); |
| switch (status) { |
| case COMPLETED: |
| return State.DONE; |
| case COMPLETING: |
| case RUNNING: |
| case STARTING: |
| return State.RUNNING; |
| case FAILED: |
| return State.FAILED; |
| case NOT_RUNNING: |
| case SUSPENDED: |
| case SUSPENDED_EXPORTING_SNAPSHOT: |
| return State.STOPPED; |
| default: |
| LOG.warn("Unhandled " + JobStatus.class.getSimpleName() + ": " + status.name() + "!"); |
| return State.UNKNOWN; |
| } |
| } |
| |
| @Override |
| public State cancel() throws IOException { |
| if (terminalState != null) { |
| throw new IllegalStateException("Job already completed"); |
| } |
| try { |
| job.cancel(); |
| job.join(); |
| } catch (CancellationException ignored) { |
| } catch (Exception e) { |
| throw new IOException("Failed to cancel the job: " + e, e); |
| } |
| return State.FAILED; |
| } |
| |
| @Override |
| public State waitUntilFinish(Duration duration) { |
| if (terminalState != null) { |
| return terminalState; |
| } |
| |
| try { |
| completionFuture.get(duration.getMillis(), TimeUnit.MILLISECONDS); |
| return State.DONE; |
| } catch (InterruptedException | TimeoutException e) { |
| return getState(); // job should be RUNNING or STOPPED |
| } catch (ExecutionException e) { |
| throw new CompletionException(e.getCause()); |
| } |
| } |
| |
| @Override |
| public State waitUntilFinish() { |
| return waitUntilFinish(new Duration(Long.MAX_VALUE)); |
| } |
| |
| @Override |
| public MetricResults metrics() { |
| return metricResults; |
| } |
| } |