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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.eclipse.aether.transport.apache;
20  
21  import org.apache.http.client.protocol.HttpClientContext;
22  
23  /**
24   * HTTP context that shares certain attributes among requests to optimize the communication with the server.
25   *
26   * @see <a href="http://hc.apache.org/httpcomponents-client-ga/tutorial/html/advanced.html#stateful_conn">Stateful HTTP
27   *      connections</a>
28   */
29  final class SharingHttpContext extends HttpClientContext {
30  
31      private final LocalState state;
32  
33      SharingHttpContext(LocalState state) {
34          this.state = state;
35      }
36  
37      @Override
38      public Object getAttribute(String id) {
39          if (HttpClientContext.USER_TOKEN.equals(id)) {
40              return state.getUserToken();
41          }
42          return super.getAttribute(id);
43      }
44  
45      @Override
46      public void setAttribute(String id, Object obj) {
47          if (HttpClientContext.USER_TOKEN.equals(id)) {
48              state.setUserToken(obj);
49          } else {
50              super.setAttribute(id, obj);
51          }
52      }
53  
54      @Override
55      public Object removeAttribute(String id) {
56          if (HttpClientContext.USER_TOKEN.equals(id)) {
57              state.setUserToken(null);
58              return null;
59          }
60          return super.removeAttribute(id);
61      }
62  }