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.sdk.fn.data;
  
  import java.io.InputStream;
  import org.apache.beam.sdk.coders.Coder;
  import org.apache.beam.vendor.grpc.v1p69p0.com.google.protobuf.ByteString;
  
  /** A receiver of encoded data, decoding it and passing it onto a downstream consumer. */
  public class DecodingFnDataReceiver<T> implements FnDataReceiver<ByteString> {
  
    private final Coder<T> coder;
    private final FnDataReceiver<T> consumer;
  
    public DecodingFnDataReceiver(Coder<T> coder, FnDataReceiver<T> consumer) {
      this.coder = coder;
      this.consumer = consumer;
    }
  
    public static <T> DecodingFnDataReceiver<T> create(Coder<T> coder, FnDataReceiver<T> consumer) {
      return new DecodingFnDataReceiver<T>(coder, consumer);
    }
  
    @Override
    public void accept(ByteString input) throws Exception {
      InputStream inputStream = input.newInput();
      while (inputStream.available() > 0) {
        consumer.accept(coder.decode(inputStream));
      }
    }
  }
  