| /* |
| * 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.sdk.io.gcp.pubsub; |
| |
| import com.google.auto.service.AutoService; |
| import java.util.Collections; |
| import java.util.Map; |
| import org.apache.beam.model.pipeline.v1.RunnerApi; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.FunctionSpec; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.PubSubReadPayload; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.PubSubWritePayload; |
| import org.apache.beam.runners.core.construction.PTransformTranslation; |
| import org.apache.beam.runners.core.construction.PTransformTranslation.TransformPayloadTranslator; |
| import org.apache.beam.runners.core.construction.SdkComponents; |
| import org.apache.beam.runners.core.construction.TransformPayloadTranslatorRegistrar; |
| import org.apache.beam.sdk.io.Read; |
| import org.apache.beam.sdk.io.Read.Unbounded; |
| import org.apache.beam.sdk.io.gcp.pubsub.PubsubClient.SubscriptionPath; |
| import org.apache.beam.sdk.io.gcp.pubsub.PubsubClient.TopicPath; |
| import org.apache.beam.sdk.io.gcp.pubsub.PubsubUnboundedSource.PubsubSource; |
| import org.apache.beam.sdk.options.ValueProvider; |
| import org.apache.beam.sdk.options.ValueProvider.NestedValueProvider; |
| import org.apache.beam.sdk.runners.AppliedPTransform; |
| import org.apache.beam.sdk.transforms.PTransform; |
| |
| @SuppressWarnings({ |
| "rawtypes", // TODO(https://issues.apache.org/jira/browse/BEAM-10556) |
| "nullness" // TODO(https://issues.apache.org/jira/browse/BEAM-10402) |
| }) |
| /** |
| * Utility methods for translating a {@link Unbounded} which reads from {@link |
| * PubsubUnboundedSource} to {@link RunnerApi} representations. |
| */ |
| public class PubSubPayloadTranslation { |
| static class PubSubReadPayloadTranslator |
| implements TransformPayloadTranslator<Read.Unbounded<?>> { |
| |
| @Override |
| public String getUrn(Read.Unbounded<?> transform) { |
| if (!(transform.getSource() instanceof PubsubUnboundedSource.PubsubSource)) { |
| return null; |
| } |
| return PTransformTranslation.PUBSUB_READ; |
| } |
| |
| @Override |
| public RunnerApi.FunctionSpec translate( |
| AppliedPTransform<?, ?, Unbounded<?>> transform, SdkComponents components) { |
| if (!(transform.getTransform().getSource() instanceof PubsubUnboundedSource.PubsubSource)) { |
| return null; |
| } |
| PubSubReadPayload.Builder payloadBuilder = PubSubReadPayload.newBuilder(); |
| PubsubUnboundedSource pubsubUnboundedSource = |
| ((PubsubSource) transform.getTransform().getSource()).outer; |
| ValueProvider<TopicPath> topicProvider = pubsubUnboundedSource.getTopicProvider(); |
| if (topicProvider != null) { |
| if (topicProvider.isAccessible()) { |
| payloadBuilder.setTopic(topicProvider.get().getFullPath()); |
| } else { |
| payloadBuilder.setTopicRuntimeOverridden( |
| ((NestedValueProvider) topicProvider).propertyName()); |
| } |
| } |
| ValueProvider<SubscriptionPath> subscriptionProvider = |
| pubsubUnboundedSource.getSubscriptionProvider(); |
| if (subscriptionProvider != null) { |
| if (subscriptionProvider.isAccessible()) { |
| payloadBuilder.setSubscription(subscriptionProvider.get().getFullPath()); |
| } else { |
| payloadBuilder.setSubscriptionRuntimeOverridden( |
| ((NestedValueProvider) subscriptionProvider).propertyName()); |
| } |
| } |
| |
| if (pubsubUnboundedSource.getTimestampAttribute() != null) { |
| payloadBuilder.setTimestampAttribute(pubsubUnboundedSource.getTimestampAttribute()); |
| } |
| if (pubsubUnboundedSource.getIdAttribute() != null) { |
| payloadBuilder.setIdAttribute(pubsubUnboundedSource.getIdAttribute()); |
| } |
| payloadBuilder.setWithAttributes( |
| pubsubUnboundedSource.getNeedsAttributes() || pubsubUnboundedSource.getNeedsMessageId()); |
| return FunctionSpec.newBuilder() |
| .setUrn(getUrn(transform.getTransform())) |
| .setPayload(payloadBuilder.build().toByteString()) |
| .build(); |
| } |
| } |
| |
| static class PubSubWritePayloadTranslator |
| implements TransformPayloadTranslator<PubsubUnboundedSink.PubsubSink> { |
| |
| @Override |
| public String getUrn(PubsubUnboundedSink.PubsubSink transform) { |
| return PTransformTranslation.PUBSUB_WRITE; |
| } |
| |
| @Override |
| public RunnerApi.FunctionSpec translate( |
| AppliedPTransform<?, ?, PubsubUnboundedSink.PubsubSink> transform, |
| SdkComponents components) { |
| PubSubWritePayload.Builder payloadBuilder = PubSubWritePayload.newBuilder(); |
| ValueProvider<TopicPath> topicProvider = transform.getTransform().outer.getTopicProvider(); |
| if (topicProvider.isAccessible()) { |
| payloadBuilder.setTopic(topicProvider.get().getFullPath()); |
| } else { |
| payloadBuilder.setTopicRuntimeOverridden( |
| ((NestedValueProvider) topicProvider).propertyName()); |
| } |
| if (transform.getTransform().outer.getTimestampAttribute() != null) { |
| payloadBuilder.setTimestampAttribute( |
| transform.getTransform().outer.getTimestampAttribute()); |
| } |
| if (transform.getTransform().outer.getIdAttribute() != null) { |
| payloadBuilder.setIdAttribute(transform.getTransform().outer.getIdAttribute()); |
| } |
| return FunctionSpec.newBuilder() |
| .setUrn(getUrn(transform.getTransform())) |
| .setPayload(payloadBuilder.build().toByteString()) |
| .build(); |
| } |
| } |
| |
| @AutoService(TransformPayloadTranslatorRegistrar.class) |
| public static class WriteRegistrar implements TransformPayloadTranslatorRegistrar { |
| |
| @Override |
| public Map<? extends Class<? extends PTransform>, ? extends TransformPayloadTranslator> |
| getTransformPayloadTranslators() { |
| return Collections.singletonMap( |
| PubsubUnboundedSink.PubsubSink.class, new PubSubWritePayloadTranslator()); |
| } |
| } |
| |
| @AutoService(TransformPayloadTranslatorRegistrar.class) |
| public static class ReadRegistrar implements TransformPayloadTranslatorRegistrar { |
| |
| @Override |
| public Map<? extends Class<? extends PTransform>, ? extends TransformPayloadTranslator> |
| getTransformPayloadTranslators() { |
| return Collections.singletonMap(Read.Unbounded.class, new PubSubReadPayloadTranslator()); |
| } |
| } |
| } |