/*
    * ====================================================================
    * 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.support;
  
  import java.io.IOException;
  
  import org.apache.hc.core5.http.EntityDetails;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpRequest;
  import org.apache.hc.core5.http.nio.AsyncDataConsumer;
  import org.apache.hc.core5.http.nio.AsyncFilterChain;
  import org.apache.hc.core5.http.nio.AsyncFilterHandler;
  import org.apache.hc.core5.http.protocol.HttpContext;
  
  /**
   * An element in an asynchronous request processing chain.
   *
   * @since 5.0
   */
  public final class AsyncServerFilterChainElement {
  
      private final AsyncFilterHandler handler;
      private final AsyncServerFilterChainElement next;
      private final AsyncFilterChain filterChain;
  
      public AsyncServerFilterChainElementncServerFilterChainElement(final AsyncFilterHandler handler, final AsyncServerFilterChainElement next) {
          this.handler = handler;
          this.next = next;
          this.filterChain = new AsyncFilterChain() {
  
              @Override
              public AsyncDataConsumer proceed(
                      final HttpRequest request,
                      final EntityDetails entityDetails,
                      final HttpContext context,
                      final ResponseTrigger responseTrigger) throws HttpException, IOException {
                  return next.handle(request, entityDetails, context, responseTrigger);
              }
  
          };
      }
  
      public AsyncDataConsumer handle(
              final HttpRequest request,
              final EntityDetails entityDetails,
              final HttpContext context,
              final AsyncFilterChain.ResponseTrigger responseTrigger) throws HttpException, IOException {
          return handler.handle(request, entityDetails, context, responseTrigger, filterChain);
      }
  
      @Override
      public String toString() {
          return "{" +
                  "handler=" + handler.getClass() +
                  ", next=" + (next != null ? next.handler.getClass() : "null") +
                  '}';
      }
  
  }