| /* |
| * 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.core.construction.graph; |
| |
| import com.google.auto.value.AutoValue; |
| import org.apache.beam.model.pipeline.v1.RunnerApi; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.ExecutableStagePayload.SideInputId; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.PCollection; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.PTransform; |
| import org.apache.beam.runners.core.construction.graph.PipelineNode.PCollectionNode; |
| import org.apache.beam.runners.core.construction.graph.PipelineNode.PTransformNode; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.MoreObjects; |
| |
| /** |
| * A reference to a side input. This includes the PTransform that references the side input as well |
| * as the PCollection referenced. Both are necessary in order to fully resolve a view. |
| */ |
| @AutoValue |
| public abstract class SideInputReference { |
| |
| /** Create a side input reference. */ |
| public static SideInputReference of( |
| PTransformNode transform, String localName, PCollectionNode collection) { |
| return new AutoValue_SideInputReference(transform, localName, collection); |
| } |
| |
| /** Create a side input reference from a SideInputId proto and components. */ |
| public static SideInputReference fromSideInputId( |
| SideInputId sideInputId, RunnerApi.Components components) { |
| String transformId = sideInputId.getTransformId(); |
| String localName = sideInputId.getLocalName(); |
| String collectionId = components.getTransformsOrThrow(transformId).getInputsOrThrow(localName); |
| PTransform transform = components.getTransformsOrThrow(transformId); |
| PCollection collection = components.getPcollectionsOrThrow(collectionId); |
| return SideInputReference.of( |
| PipelineNode.pTransform(transformId, transform), |
| localName, |
| PipelineNode.pCollection(collectionId, collection)); |
| } |
| |
| /** The PTransform that uses this side input. */ |
| public abstract PTransformNode transform(); |
| /** The local name the referencing PTransform uses to refer to this side input. */ |
| public abstract String localName(); |
| /** The PCollection that backs this side input. */ |
| public abstract PCollectionNode collection(); |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this) |
| .add("Transform", transform().toString()) |
| .add("PCollection", collection().toString()) |
| .toString(); |
| } |
| } |