| /* |
| * 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.flink; |
| |
| import org.apache.beam.sdk.Pipeline; |
| import org.apache.beam.sdk.runners.AppliedPTransform; |
| import org.apache.beam.sdk.runners.TransformHierarchy; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PCollection.IsBounded; |
| import org.apache.beam.sdk.values.PValue; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Traverses the Pipeline to determine the translation mode (i.e. streaming or batch) for this |
| * pipeline. |
| */ |
| class PipelineTranslationModeOptimizer extends FlinkPipelineTranslator { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(PipelineTranslationModeOptimizer.class); |
| |
| private boolean hasUnboundedCollections; |
| |
| static boolean hasUnboundedOutput(Pipeline p) { |
| PipelineTranslationModeOptimizer optimizer = new PipelineTranslationModeOptimizer(); |
| optimizer.translate(p); |
| return optimizer.hasUnboundedCollections; |
| } |
| |
| private PipelineTranslationModeOptimizer() {} |
| |
| @Override |
| public void translate(Pipeline pipeline) { |
| super.translate(pipeline); |
| } |
| |
| @Override |
| public CompositeBehavior enterCompositeTransform(TransformHierarchy.Node node) { |
| return CompositeBehavior.ENTER_TRANSFORM; |
| } |
| |
| @Override |
| public void leaveCompositeTransform(TransformHierarchy.Node node) {} |
| |
| @Override |
| public void visitPrimitiveTransform(TransformHierarchy.Node node) { |
| AppliedPTransform<?, ?, ?> appliedPTransform = node.toAppliedPTransform(getPipeline()); |
| if (hasUnboundedOutput(appliedPTransform)) { |
| Class<? extends PTransform> transformClass = node.getTransform().getClass(); |
| LOG.debug("Found unbounded PCollection for transform %s", transformClass); |
| hasUnboundedCollections = true; |
| } |
| } |
| |
| private boolean hasUnboundedOutput(AppliedPTransform<?, ?, ?> transform) { |
| return transform.getOutputs().values().stream() |
| .filter(value -> value instanceof PCollection) |
| .map(value -> (PCollection<?>) value) |
| .anyMatch(collection -> collection.isBounded() == IsBounded.UNBOUNDED); |
| } |
| |
| @Override |
| public void visitValue(PValue value, TransformHierarchy.Node producer) {} |
| } |