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.shared.datastore_testing; 18 19 import androidx.datastore.guava.GuavaDataStore; 20 21 import com.android.adservices.shared.common.ApplicationContextSingleton; 22 import com.android.adservices.shared.datastore.ProtoSerializer; 23 import com.android.adservices.shared.datastore_testing.proto.ExampleDatastoreProto; 24 25 import com.google.common.util.concurrent.ListenableFuture; 26 import com.google.protobuf.ExtensionRegistryLite; 27 28 import java.util.function.Function; 29 30 /** 31 * Wrapper class for to read and update the {@link ExampleDatastoreProto} stored in the datastore. 32 */ 33 final class ExampleDataStore { 34 private final GuavaDataStore<ExampleDatastoreProto> mDataStore; 35 ExampleDataStore(String fileName)36 ExampleDataStore(String fileName) { 37 mDataStore = 38 new GuavaDataStore.Builder<ExampleDatastoreProto>( 39 ApplicationContextSingleton.get(), 40 fileName, 41 new ProtoSerializer<ExampleDatastoreProto>( 42 ExampleDatastoreProto.getDefaultInstance(), 43 ExtensionRegistryLite.getEmptyRegistry())) 44 .build(); 45 } 46 getDataAsync()47 ListenableFuture<ExampleDatastoreProto> getDataAsync() { 48 return mDataStore.getDataAsync(); 49 } 50 updateDataAsync( Function<ExampleDatastoreProto, ExampleDatastoreProto> transform)51 ListenableFuture<ExampleDatastoreProto> updateDataAsync( 52 Function<ExampleDatastoreProto, ExampleDatastoreProto> transform) { 53 return mDataStore.updateDataAsync(input -> transform.apply(input)); 54 } 55 } 56