1 /*
2  * Copyright (C) 2024 The Android Open Source Project
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  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.adservices.service.common;
18 
19 import com.android.adservices.concurrency.AdServicesExecutors;
20 import com.android.internal.annotations.VisibleForTesting;
21 
22 import java.util.concurrent.ExecutorService;
23 
24 /** Class to instantiate {@link RetryStrategy} based on feature flag */
25 public class RetryStrategyFactory {
26 
27     private final boolean mIsRetryStrategyEnabled;
28     private final ExecutorService mExecutorService;
29 
RetryStrategyFactory(boolean isRetryStrategyEnabled, ExecutorService executorService)30     private RetryStrategyFactory(boolean isRetryStrategyEnabled, ExecutorService executorService) {
31         mIsRetryStrategyEnabled = isRetryStrategyEnabled;
32         mExecutorService = executorService;
33     }
34 
35     /** provides instance of {@link RetryStrategyFactory}. */
createInstance( boolean isAdServicesRetryStrategyEnabled, ExecutorService executorService)36     public static RetryStrategyFactory createInstance(
37             boolean isAdServicesRetryStrategyEnabled, ExecutorService executorService) {
38         return new RetryStrategyFactory(isAdServicesRetryStrategyEnabled, executorService);
39     }
40 
41     /**
42      * provides instance of {@link RetryStrategyFactory} which will always return {@link
43      * NoOpRetryStrategyImpl }.
44      */
45     @VisibleForTesting
createInstanceForTesting()46     public static RetryStrategyFactory createInstanceForTesting() {
47         return new RetryStrategyFactory(false, AdServicesExecutors.getLightWeightExecutor());
48     }
49 
50     /**
51      * @return the correct instance of {@link RetryStrategy} based on the feature flag.
52      */
createRetryStrategy(int maxRetryAttempts)53     public RetryStrategy createRetryStrategy(int maxRetryAttempts) {
54         return mIsRetryStrategyEnabled
55                 ? new RetryStrategyImpl(maxRetryAttempts, mExecutorService)
56                 : new NoOpRetryStrategyImpl();
57     }
58 }
59