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.examples.webapis;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import org.apache.beam.sdk.coders.CoderException;
  import org.apache.beam.sdk.coders.CustomCoder;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  
  /** A {@link CustomCoder} of an {@link ImageRequest}. */
  class ImageRequestCoder extends CustomCoder<ImageRequest> {
    private static final StringUtf8Coder STRING_UTF_8_CODER = StringUtf8Coder.of();
  
    static ImageRequestCoder of() {
      return new ImageRequestCoder();
    }
  
    @Override
    public void encode(ImageRequest value, OutputStream outStream)
        throws CoderException, IOException {
      STRING_UTF_8_CODER.encode(value.getImageUrl(), outStream);
      STRING_UTF_8_CODER.encode(value.getMimeType(), outStream);
    }
  
    @Override
    public ImageRequest decode(InputStream inStream) throws CoderException, IOException {
      String imageUrl = STRING_UTF_8_CODER.decode(inStream);
      String mimeType = STRING_UTF_8_CODER.decode(inStream);
      return ImageRequest.builder().setImageUrl(imageUrl).setMimeType(mimeType).build();
    }
  }
  