1 package org.eclipse.aether.transport.http;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.LinkedList;
23
24 import org.apache.http.auth.AuthScheme;
25 import org.apache.http.client.config.AuthSchemes;
26 import org.apache.http.impl.auth.BasicScheme;
27
28 /**
29 * Pool of (equivalent) auth schemes for a single host.
30 */
31 final class AuthSchemePool
32 {
33
34 private final LinkedList<AuthScheme> authSchemes;
35
36 private String schemeName;
37
38 AuthSchemePool()
39 {
40 authSchemes = new LinkedList<>();
41 }
42
43 public synchronized AuthScheme get()
44 {
45 AuthScheme authScheme = null;
46 if ( !authSchemes.isEmpty() )
47 {
48 authScheme = authSchemes.removeLast();
49 }
50 else if ( AuthSchemes.BASIC.equalsIgnoreCase( schemeName ) )
51 {
52 authScheme = new BasicScheme();
53 }
54 return authScheme;
55 }
56
57 public synchronized void put( AuthScheme authScheme )
58 {
59 if ( authScheme == null )
60 {
61 return;
62 }
63 if ( !authScheme.getSchemeName().equals( schemeName ) )
64 {
65 schemeName = authScheme.getSchemeName();
66 authSchemes.clear();
67 }
68 authSchemes.add( authScheme );
69 }
70
71 }