| /* |
| * 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.twister2; |
| |
| import edu.iu.dsc.tws.api.tset.sets.TSet; |
| import edu.iu.dsc.tws.api.tset.sets.batch.BatchTSet; |
| import edu.iu.dsc.tws.tset.TBaseGraph; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.logging.Logger; |
| import org.apache.beam.runners.twister2.translators.Twister2BatchPipelineTranslator; |
| import org.apache.beam.runners.twister2.translators.Twister2PipelineTranslator; |
| import org.apache.beam.runners.twister2.translators.Twister2StreamPipelineTranslator; |
| import org.apache.beam.sdk.Pipeline; |
| import org.apache.beam.sdk.runners.TransformHierarchy; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PValue; |
| import org.slf4j.LoggerFactory; |
| |
| /** Twister2PipelineExecutionEnvironment. */ |
| public class Twister2PipelineExecutionEnvironment { |
| private static final Logger LOG = |
| Logger.getLogger(Twister2PipelineExecutionEnvironment.class.getName()); |
| |
| private final Twister2PipelineOptions options; |
| private Twister2TranslationContext twister2TranslationContext; |
| |
| public Twister2PipelineExecutionEnvironment(Twister2PipelineOptions options) { |
| this.options = options; |
| options.setTSetEnvironment(new BeamBatchTSetEnvironment()); |
| } |
| |
| /** translate the pipline into Twister2 TSet graph. */ |
| public void translate(Pipeline pipeline) { |
| |
| TranslationModeDetector detector = new TranslationModeDetector(); |
| pipeline.traverseTopologically(detector); |
| |
| if (detector.isStreaming()) { |
| LOG.info("Found unbounded PCollection. Switching to streaming execution."); |
| options.setStreaming(true); |
| throw new UnsupportedOperationException( |
| "Streaming is not supported currently in the Twister2 Runner"); |
| } |
| |
| Twister2PipelineTranslator translator; |
| if (options.isStreaming()) { |
| twister2TranslationContext = new Twister2StreamTranslationContext(options); |
| translator = new Twister2StreamPipelineTranslator(options, twister2TranslationContext); |
| } else { |
| twister2TranslationContext = new Twister2BatchTranslationContext(options); |
| translator = |
| new Twister2BatchPipelineTranslator( |
| options, (Twister2BatchTranslationContext) twister2TranslationContext); |
| } |
| |
| translator.translate(pipeline); |
| } |
| |
| public Map<String, BatchTSet<?>> getSideInputs() { |
| return twister2TranslationContext.getSideInputDataSets(); |
| } |
| |
| public Set<TSet> getLeaves() { |
| return twister2TranslationContext.getLeaves(); |
| } |
| |
| protected TBaseGraph getTSetGraph() { |
| return twister2TranslationContext.getEnvironment().getGraph(); |
| } |
| |
| /** Traverses the Pipeline to determine if this is a streaming pipeline. */ |
| private static class TranslationModeDetector extends Pipeline.PipelineVisitor.Defaults { |
| private static final org.slf4j.Logger LOG = |
| LoggerFactory.getLogger(TranslationModeDetector.class); |
| |
| private boolean isStreaming; |
| |
| TranslationModeDetector() { |
| this.isStreaming = false; |
| } |
| |
| boolean isStreaming() { |
| return isStreaming; |
| } |
| |
| @Override |
| public void visitValue(PValue value, TransformHierarchy.Node producer) { |
| if (!isStreaming) { |
| if (value instanceof PCollection |
| && ((PCollection) value).isBounded() == PCollection.IsBounded.UNBOUNDED) { |
| LOG.info( |
| "Found unbounded PCollection {}. Switching to streaming execution.", value.getName()); |
| isStreaming = true; |
| } |
| } |
| } |
| } |
| } |