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 = next != null ? next::handle : null;
55 }
56
57 public AsyncDataConsumer handle(
58 final HttpRequest request,
59 final EntityDetails entityDetails,
60 final HttpContext context,
61 final AsyncFilterChain.ResponseTrigger responseTrigger) throws HttpException, IOException {
62 return handler.handle(request, entityDetails, context, responseTrigger, filterChain);
63 }
64
65 @Override
66 public String toString() {
67 return "{" +
68 "handler=" + handler.getClass() +
69 ", next=" + (next != null ? next.handler.getClass() : "null") +
70 '}';
71 }
72
73 }