View Javadoc
1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.hc.core5.http.nio.support;
29  
30  import java.io.IOException;
31  
32  import org.apache.hc.core5.http.EntityDetails;
33  import org.apache.hc.core5.http.HttpException;
34  import org.apache.hc.core5.http.HttpRequest;
35  import org.apache.hc.core5.http.nio.AsyncDataConsumer;
36  import org.apache.hc.core5.http.nio.AsyncFilterChain;
37  import org.apache.hc.core5.http.nio.AsyncFilterHandler;
38  import org.apache.hc.core5.http.protocol.HttpContext;
39  
40  /**
41   * An element in an asynchronous request processing chain.
42   *
43   * @since 5.0
44   */
45  public final class AsyncServerFilterChainElement {
46  
47      private final AsyncFilterHandler handler;
48      private final AsyncServerFilterChainElement next;
49      private final AsyncFilterChain filterChain;
50  
51      public AsyncServerFilterChainElement(final AsyncFilterHandler handler, final AsyncServerFilterChainElement next) {
52          this.handler = handler;
53          this.next = next;
54          this.filterChain = new AsyncFilterChain() {
55  
56              @Override
57              public AsyncDataConsumer proceed(
58                      final HttpRequest request,
59                      final EntityDetails entityDetails,
60                      final HttpContext context,
61                      final ResponseTrigger responseTrigger) throws HttpException, IOException {
62                  return next.handle(request, entityDetails, context, responseTrigger);
63              }
64  
65          };
66      }
67  
68      public AsyncDataConsumer handle(
69              final HttpRequest request,
70              final EntityDetails entityDetails,
71              final HttpContext context,
72              final AsyncFilterChain.ResponseTrigger responseTrigger) throws HttpException, IOException {
73          return handler.handle(request, entityDetails, context, responseTrigger, filterChain);
74      }
75  
76      @Override
77      public String toString() {
78          return "{" +
79                  "handler=" + handler.getClass() +
80                  ", next=" + (next != null ? next.handler.getClass() : "null") +
81                  '}';
82      }
83  
84  }