| /* |
| * Copyright 2022 Google LLC |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.google.android.libraries.mobiledatadownload.file.integration.downloader; |
| |
| import android.net.Uri; |
| import com.google.android.downloader.DownloadMetadata; |
| import com.google.common.base.Optional; |
| import com.google.common.util.concurrent.ListenableFuture; |
| |
| /** Storage mechanism for DownloadMetadata. */ |
| public interface DownloadMetadataStore { |
| /** Returns the DownloadMetadata associated with {@code uri} if it exists. */ |
| ListenableFuture<Optional<DownloadMetadata>> read(Uri uri); |
| |
| /** Inserts or updates the {@code metadata} associated with {@code uri}. */ |
| ListenableFuture<Void> upsert(Uri uri, DownloadMetadata metadata); |
| |
| /** Deletes the DownloadMetadata associated with {@code uri} if it exists. */ |
| ListenableFuture<Void> delete(Uri uri); |
| } |