1 // Copyright 2021 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 package com.google.android.downloader;
16 
17 import com.google.common.util.concurrent.ListenableFuture;
18 import java.net.URI;
19 
20 /**
21  * Provider interface for supplying OAuth tokens for a request. The tokens generated by this method
22  * are added to requests as http headers. For more details, see the official spec for this
23  * authorization mechanism: https://tools.ietf.org/html/rfc6750#page-5
24  */
25 public interface OAuthTokenProvider {
26   /** Provides an OAuth bearer token for the given URI. */
provideOAuthToken(URI uri)27   ListenableFuture<String> provideOAuthToken(URI uri);
28 }
29