| /* |
| * 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.direct.portable; |
| |
| import static org.apache.beam.vendor.guava.v20_0.com.google.common.base.Preconditions.checkNotNull; |
| import static org.apache.beam.vendor.guava.v20_0.com.google.common.base.Preconditions.checkState; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.Components; |
| import org.apache.beam.runners.core.construction.PTransformTranslation; |
| import org.apache.beam.runners.core.construction.graph.ExecutableStage; |
| import org.apache.beam.runners.core.construction.graph.PipelineNode.PCollectionNode; |
| import org.apache.beam.runners.core.construction.graph.PipelineNode.PTransformNode; |
| import org.apache.beam.runners.direct.ExecutableGraph; |
| import org.apache.beam.runners.fnexecution.control.JobBundleFactory; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableMap; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A {@link TransformEvaluatorFactory} that delegates to primitive {@link TransformEvaluatorFactory} |
| * implementations based on the type of {@link PTransform} of the application. |
| */ |
| class TransformEvaluatorRegistry { |
| private static final Logger LOG = LoggerFactory.getLogger(TransformEvaluatorRegistry.class); |
| |
| static TransformEvaluatorRegistry portableRegistry( |
| ExecutableGraph<PTransformNode, PCollectionNode> graph, |
| Components components, |
| BundleFactory bundleFactory, |
| JobBundleFactory jobBundleFactory, |
| StepStateAndTimers.Provider stepStateAndTimers) { |
| return new TransformEvaluatorRegistry( |
| ImmutableMap.<String, TransformEvaluatorFactory>builder() |
| .put( |
| PTransformTranslation.IMPULSE_TRANSFORM_URN, |
| new ImpulseEvaluatorFactory(graph, bundleFactory)) |
| .put( |
| PTransformTranslation.FLATTEN_TRANSFORM_URN, |
| new FlattenEvaluatorFactory(graph, bundleFactory)) |
| .put( |
| DirectGroupByKey.DIRECT_GBKO_URN, |
| new GroupByKeyOnlyEvaluatorFactory(graph, components, bundleFactory)) |
| .put( |
| DirectGroupByKey.DIRECT_GABW_URN, |
| new GroupAlsoByWindowEvaluatorFactory( |
| graph, components, bundleFactory, stepStateAndTimers)) |
| .put( |
| ExecutableStage.URN, |
| new RemoteStageEvaluatorFactory(bundleFactory, jobBundleFactory)) |
| .put( |
| SplittableRemoteStageEvaluatorFactory.URN, |
| new SplittableRemoteStageEvaluatorFactory( |
| bundleFactory, jobBundleFactory, stepStateAndTimers)) |
| .build()); |
| } |
| |
| // the TransformEvaluatorFactories can construct instances of all generic types of transform, |
| // so all instances of a primitive can be handled with the same evaluator factory. |
| private final Map<String, TransformEvaluatorFactory> factories; |
| |
| private final AtomicBoolean finished = new AtomicBoolean(false); |
| |
| private TransformEvaluatorRegistry( |
| @SuppressWarnings("rawtypes") Map<String, TransformEvaluatorFactory> factories) { |
| this.factories = factories; |
| } |
| |
| public <InputT> TransformEvaluator<InputT> forApplication( |
| PTransformNode application, CommittedBundle<?> inputBundle) throws Exception { |
| checkState( |
| !finished.get(), "Tried to get an evaluator for a finished TransformEvaluatorRegistry"); |
| |
| String urn = PTransformTranslation.urnForTransformOrNull(application.getTransform()); |
| |
| TransformEvaluatorFactory factory = |
| checkNotNull(factories.get(urn), "No evaluator for PTransform \"%s\"", urn); |
| return factory.forApplication(application, inputBundle); |
| } |
| |
| public void cleanup() throws Exception { |
| Collection<Exception> thrownInCleanup = new ArrayList<>(); |
| for (TransformEvaluatorFactory factory : factories.values()) { |
| try { |
| factory.cleanup(); |
| } catch (Exception e) { |
| if (e instanceof InterruptedException) { |
| Thread.currentThread().interrupt(); |
| } |
| thrownInCleanup.add(e); |
| } |
| } |
| finished.set(true); |
| if (!thrownInCleanup.isEmpty()) { |
| LOG.error("Exceptions {} thrown while cleaning up evaluators", thrownInCleanup); |
| Exception toThrow = null; |
| for (Exception e : thrownInCleanup) { |
| if (toThrow == null) { |
| toThrow = e; |
| } else { |
| toThrow.addSuppressed(e); |
| } |
| } |
| throw toThrow; |
| } |
| } |
| } |