content: /*
   * 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.dataflow.util;
  
  import java.io.IOException;
  import org.apache.beam.model.pipeline.v1.SchemaApi;
  import org.apache.beam.sdk.coders.RowCoder;
  import org.apache.beam.sdk.schemas.Schema;
  import org.apache.beam.sdk.schemas.SchemaTranslation;
  import org.apache.beam.sdk.util.construction.SdkComponents;
  import org.apache.beam.vendor.grpc.v1p69p0.com.google.protobuf.util.JsonFormat;
  
  /** Translator for row coders. */
  public class RowCoderCloudObjectTranslator implements CloudObjectTranslator<RowCoder> {
    private static final String SCHEMA = "schema";
  
    @Override
    public Class<? extends RowCoder> getSupportedClass() {
      return RowCoder.class;
    }
  
    /** Convert to a cloud object. */
    @Override
    public CloudObject toCloudObject(RowCoder target, SdkComponents sdkComponents) {
      CloudObject base = CloudObject.forClass(RowCoder.class);
      try {
        Structs.addString(
            base,
            SCHEMA,
            JsonFormat.printer().print(SchemaTranslation.schemaToProto(target.getSchema(), true)));
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
      return base;
    }
  
    /** Convert from a cloud object. */
    @Override
    public RowCoder fromCloudObject(CloudObject cloudObject) {
      try {
        SchemaApi.Schema.Builder schemaBuilder = SchemaApi.Schema.newBuilder();
        JsonFormat.parser().merge(Structs.getString(cloudObject, SCHEMA), schemaBuilder);
        Schema schema = SchemaTranslation.schemaFromProto(schemaBuilder.build());
        return RowCoder.of(schema);
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public String cloudObjectClassName() {
      return CloudObject.forClass(RowCoder.class).getClassName();
    }
  }
  