| /* |
| * 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.populator; |
| |
| import com.google.mobiledatadownload.populator.MetadataProto.ManifestFileBookkeeping; |
| import com.google.common.base.Optional; |
| import com.google.common.util.concurrent.ListenableFuture; |
| |
| /** Storage mechanism for ManifestFileBookkeeping. */ |
| interface ManifestFileMetadataStore { |
| /** Returns the metadata associated with {@code manifestId} if it exists. */ |
| ListenableFuture<Optional<ManifestFileBookkeeping>> read(String manifestId); |
| |
| /** Inserts or updates the metadata associated with {@code manifestId}. */ |
| ListenableFuture<Void> upsert(String manifestId, ManifestFileBookkeeping value); |
| } |