| /* |
| * 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; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkState; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.Function; |
| import org.apache.beam.model.pipeline.v1.RunnerApi; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.StandardDisplayData; |
| import org.apache.beam.sdk.transforms.display.DisplayData; |
| import org.apache.beam.vendor.grpc.v1p26p0.com.google.protobuf.ByteString; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap; |
| |
| /** Utilities for going to/from DisplayData protos. */ |
| @SuppressWarnings({ |
| "nullness" // TODO(https://issues.apache.org/jira/browse/BEAM-10402) |
| }) |
| public class DisplayDataTranslation { |
| public static final String LABELLED_STRING = "beam:display_data:labelled_string:v1"; |
| |
| static { |
| checkState( |
| LABELLED_STRING.equals(BeamUrns.getUrn(StandardDisplayData.DisplayData.LABELLED_STRING))); |
| } |
| |
| private static final Map<String, Function<DisplayData.Item, ByteString>> |
| WELL_KNOWN_URN_TRANSLATORS = |
| ImmutableMap.of(LABELLED_STRING, DisplayDataTranslation::translateStringUtf8); |
| |
| public static List<RunnerApi.DisplayData> toProto(DisplayData displayData) { |
| ImmutableList.Builder<RunnerApi.DisplayData> builder = ImmutableList.builder(); |
| for (DisplayData.Item item : displayData.items()) { |
| Function<DisplayData.Item, ByteString> translator = |
| WELL_KNOWN_URN_TRANSLATORS.get(item.getKey()); |
| String urn; |
| if (translator != null) { |
| urn = item.getKey(); |
| } else { |
| urn = LABELLED_STRING; |
| translator = DisplayDataTranslation::translateStringUtf8; |
| } |
| builder.add( |
| RunnerApi.DisplayData.newBuilder() |
| .setUrn(urn) |
| .setPayload(translator.apply(item)) |
| .build()); |
| } |
| return builder.build(); |
| } |
| |
| private static ByteString translateStringUtf8(DisplayData.Item item) { |
| String value = String.valueOf(item.getValue() == null ? item.getShortValue() : item.getValue()); |
| String label = item.getLabel() == null ? item.getKey() : item.getLabel(); |
| return RunnerApi.LabelledStringPayload.newBuilder() |
| .setLabel(label) |
| .setValue(value) |
| .build() |
| .toByteString(); |
| } |
| } |