1 /*
2 * Copyright 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
16 package software.amazon.awssdk.core.internal.http.loader;
17
18 import java.util.Optional;
19 import software.amazon.awssdk.annotations.SdkInternalApi;
20
21 /**
22 * Interface to load an HTTP service binding from the environment/classpath.
23 *
24 * @param <T> Type of service binding being loaded.
25 */
26 @SdkInternalApi
27 interface SdkHttpServiceProvider<T> {
28
29 /**
30 * @return Empty {@link Optional} if service can't be loaded, otherwise fulfilled {@link Optional} containing service
31 * instance.
32 */
33 Optional<T> loadService();
34 }
35