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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  package org.apache.hc.client5.http.auth;
28  
29  import org.apache.hc.core5.http.protocol.HttpContext;
30  
31  /**
32   * Provider of authentication credentials.
33   * <p>
34   * Implementations of this interface must be thread-safe. Access to shared
35   * data must be synchronized as methods of this interface may be executed
36   * from multiple threads.
37   * </p>
38   *
39   * @since 4.0
40   */
41  public interface CredentialsProvider {
42  
43      /**
44       * Returns {@link Credentials credentials} for the given authentication scope,
45       * if available.
46       *
47       * @param authScope the {@link AuthScope authentication scope}
48       * @param context the {@link HttpContext http context}
49       * @return the credentials
50       * @since 5.0
51       */
52      Credentials getCredentials(AuthScope authScope, HttpContext context);
53  
54  }