| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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.android.server.storage; |
| |
| import android.annotation.NonNull; |
| import android.app.usage.StorageStats; |
| import android.app.usage.StorageStatsManager; |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.PackageStats; |
| import android.content.pm.UserInfo; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.UserManager; |
| import android.os.storage.VolumeInfo; |
| import android.util.Log; |
| |
| import com.android.internal.os.BackgroundThread; |
| import com.android.internal.util.Preconditions; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * AppCollector asynchronously collects package sizes. |
| */ |
| public class AppCollector { |
| private static String TAG = "AppCollector"; |
| |
| private CompletableFuture<List<PackageStats>> mStats; |
| private final BackgroundHandler mBackgroundHandler; |
| |
| /** |
| * Constrcuts a new AppCollector which runs on the provided volume. |
| * @param context Android context used to get |
| * @param volume Volume to check for apps. |
| */ |
| public AppCollector(Context context, @NonNull VolumeInfo volume) { |
| Preconditions.checkNotNull(volume); |
| |
| mBackgroundHandler = new BackgroundHandler(BackgroundThread.get().getLooper(), |
| volume, |
| context.getPackageManager(), |
| (UserManager) context.getSystemService(Context.USER_SERVICE), |
| (StorageStatsManager) context.getSystemService(Context.STORAGE_STATS_SERVICE)); |
| } |
| |
| /** |
| * Returns a list of package stats for the context and volume. Note that in a multi-user |
| * environment, this may return stats for the same package multiple times. These "duplicate" |
| * entries will have the package stats for the package for a given user, not the package in |
| * aggregate. |
| * @param timeoutMillis Milliseconds before timing out and returning early with null. |
| */ |
| public List<PackageStats> getPackageStats(long timeoutMillis) { |
| synchronized(this) { |
| if (mStats == null) { |
| mStats = new CompletableFuture<>(); |
| mBackgroundHandler.sendEmptyMessage(BackgroundHandler.MSG_START_LOADING_SIZES); |
| } |
| } |
| |
| List<PackageStats> value = null; |
| try { |
| value = mStats.get(timeoutMillis, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException | ExecutionException e) { |
| Log.e(TAG, "An exception occurred while getting app storage", e); |
| } catch (TimeoutException e) { |
| Log.e(TAG, "AppCollector timed out"); |
| } |
| return value; |
| } |
| |
| private class BackgroundHandler extends Handler { |
| static final int MSG_START_LOADING_SIZES = 0; |
| private final VolumeInfo mVolume; |
| private final PackageManager mPm; |
| private final UserManager mUm; |
| private final StorageStatsManager mStorageStatsManager; |
| |
| BackgroundHandler(Looper looper, @NonNull VolumeInfo volume, |
| PackageManager pm, UserManager um, StorageStatsManager storageStatsManager) { |
| super(looper); |
| mVolume = volume; |
| mPm = pm; |
| mUm = um; |
| mStorageStatsManager = storageStatsManager; |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_START_LOADING_SIZES: { |
| List<PackageStats> stats = new ArrayList<>(); |
| List<UserInfo> users = mUm.getUsers(); |
| for (int userCount = 0, userSize = users.size(); |
| userCount < userSize; userCount++) { |
| UserInfo user = users.get(userCount); |
| final List<ApplicationInfo> apps = mPm.getInstalledApplicationsAsUser( |
| PackageManager.MATCH_DISABLED_COMPONENTS, user.id); |
| |
| for (int appCount = 0, size = apps.size(); appCount < size; appCount++) { |
| ApplicationInfo app = apps.get(appCount); |
| if (!Objects.equals(app.volumeUuid, mVolume.getFsUuid())) { |
| continue; |
| } |
| |
| try { |
| StorageStats storageStats = |
| mStorageStatsManager.queryStatsForPackage(app.storageUuid, |
| app.packageName, user.getUserHandle()); |
| PackageStats packageStats = new PackageStats(app.packageName, |
| user.id); |
| packageStats.cacheSize = storageStats.getCacheBytes(); |
| packageStats.codeSize = storageStats.getAppBytes(); |
| packageStats.dataSize = storageStats.getDataBytes(); |
| stats.add(packageStats); |
| } catch (NameNotFoundException | IOException e) { |
| Log.e(TAG, "An exception occurred while fetching app size", e); |
| } |
| } |
| } |
| |
| mStats.complete(stats); |
| } |
| } |
| } |
| } |
| } |