/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.http.nio.entity;
  
  import java.io.IOException;
  import java.util.Set;
  
  import org.apache.hc.core5.annotation.Contract;
  import org.apache.hc.core5.annotation.ThreadingBehavior;
  import org.apache.hc.core5.http.nio.AsyncEntityProducer;
  import org.apache.hc.core5.http.nio.DataStreamChannel;
  import org.apache.hc.core5.util.Args;
  
  /**
   * Base class for wrapping entity producers that delegates all calls to the wrapped producer.
   * Implementations can derive from this class and override only those methods that
   * should not be delegated to the wrapped producer.
   *
   * @since 5.0
   */
  @Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
  public class AsyncEntityProducerWrapper implements AsyncEntityProducer {
  
      private final AsyncEntityProducer wrappedEntityProducer;
  
      public AsyncEntityProducerWrapper(final AsyncEntityProducer wrappedEntityProducer) {
          super();
          this.wrappedEntityProducer = Args.notNull(wrappedEntityProducer, "Wrapped entity producer");
      }
  
      @Override
      public boolean isRepeatable() {
          return wrappedEntityProducer.isRepeatable();
      }
  
      @Override
      public boolean isChunked() {
          return wrappedEntityProducer.isChunked();
      }
  
      @Override
      public long getContentLength() {
          return wrappedEntityProducer.getContentLength();
      }
  
      @Override
      public String getContentType() {
          return wrappedEntityProducer.getContentType();
      }
  
      @Override
      public String getContentEncoding() {
          return wrappedEntityProducer.getContentEncoding();
      }
  
      @Override
      public Set<String> getTrailerNames() {
          return wrappedEntityProducer.getTrailerNames();
      }
  
      @Override
      public int available() {
          return wrappedEntityProducer.available();
      }
  
      @Override
      public void produce(final DataStreamChannel channel) throws IOException {
          wrappedEntityProducer.produce(channel);
      }
  
      @Override
      public void failed(final Exception cause) {
          wrappedEntityProducer.failed(cause);
      }
 
     @Override
     public void releaseResources() {
         wrappedEntityProducer.releaseResources();
     }
 
     @Override
     public String toString() {
         return "Wrapper [" + wrappedEntityProducer + "]";
     }
 
 }