| /* |
| * 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; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| |
| /** |
| * Populates MDD with file groups from multiple sources like phenotype or built on the device. |
| * |
| * <p>Clients must overrides the refreshFileGroups method and add groups to {@link |
| * MobileDataDownload#addFileGroup(AddFileGroupRequest)} in the impl. |
| */ |
| public interface FileGroupPopulator { |
| |
| /** |
| * Called periodically by MDD to refresh file groups. |
| * |
| * <p>This group should ideally be reading from a source like phenotype, so that mdd gets the |
| * updates from there on a regular basis. |
| */ |
| ListenableFuture<Void> refreshFileGroups(MobileDataDownload mobileDataDownload); |
| } |