1 /*
2 * Copyright 2011-2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License").
5 * You may not use this file except in compliance with the License.
6 * A copy of the License is located at
7 *
8 * http://aws.amazon.com/apache2.0
9 *
10 * or in the "license" file accompanying this file. This file is distributed
11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
12 * express or implied. See the License for the specific language governing
13 * permissions and limitations under the License.
14 */
15 package com.amazonaws.profile.path;
16
17 import com.amazonaws.annotation.SdkInternalApi;
18 import com.amazonaws.profile.path.AwsProfileFileLocationProvider;
19
20 import java.io.File;
21 import java.util.ArrayList;
22 import java.util.Collections;
23 import java.util.List;
24
25 /**
26 * Delegates to a chain of {@link AwsProfileFileLocationProvider}. Returns null if no provider in
27 * the chain can come up with a location to the shared credentials file.
28 */
29 @SdkInternalApi
30 public class AwsProfileFileLocationProviderChain implements AwsProfileFileLocationProvider {
31
32 private final List<AwsProfileFileLocationProvider> providers = new ArrayList<AwsProfileFileLocationProvider>();
33
34 public AwsProfileFileLocationProviderChain(AwsProfileFileLocationProvider... providers) {
35 Collections.addAll(this.providers, providers);
36 }
37
38 @Override
39 public File getLocation() {
40 for (AwsProfileFileLocationProvider provider : providers) {
41 File path = provider.getLocation();
42 if (path != null) {
43 return path;
44 }
45 }
46 return null;
47 }
48 }
49