Daniel Nishi | c7d9de5 | 2016-12-12 15:16:00 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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.server.storage; |
| 18 | |
Daniel Nishi | d54f3a4 | 2017-02-21 16:04:20 -0800 | [diff] [blame] | 19 | import android.annotation.NonNull; |
Daniel Nishi | c7d9de5 | 2016-12-12 15:16:00 -0800 | [diff] [blame] | 20 | import android.content.Context; |
| 21 | import android.content.pm.ApplicationInfo; |
| 22 | import android.content.pm.IPackageStatsObserver; |
| 23 | import android.content.pm.PackageManager; |
| 24 | import android.content.pm.PackageStats; |
| 25 | import android.content.pm.UserInfo; |
| 26 | import android.os.Handler; |
| 27 | import android.os.HandlerThread; |
| 28 | import android.os.Looper; |
| 29 | import android.os.Message; |
| 30 | import android.os.Process; |
| 31 | import android.os.RemoteException; |
| 32 | import android.os.UserManager; |
| 33 | import android.os.storage.VolumeInfo; |
| 34 | import android.util.Log; |
| 35 | import com.android.internal.os.BackgroundThread; |
Daniel Nishi | d54f3a4 | 2017-02-21 16:04:20 -0800 | [diff] [blame] | 36 | import com.android.internal.util.Preconditions; |
Daniel Nishi | c7d9de5 | 2016-12-12 15:16:00 -0800 | [diff] [blame] | 37 | |
| 38 | import java.util.ArrayList; |
| 39 | import java.util.List; |
| 40 | import java.util.Objects; |
| 41 | import java.util.concurrent.CompletableFuture; |
| 42 | import java.util.concurrent.ExecutionException; |
| 43 | import java.util.concurrent.TimeUnit; |
| 44 | import java.util.concurrent.TimeoutException; |
| 45 | import java.util.concurrent.atomic.AtomicInteger; |
| 46 | |
| 47 | /** |
| 48 | * AppCollector asynchronously collects package sizes. |
| 49 | */ |
| 50 | public class AppCollector { |
| 51 | private static String TAG = "AppCollector"; |
| 52 | |
| 53 | private CompletableFuture<List<PackageStats>> mStats; |
| 54 | private final BackgroundHandler mBackgroundHandler; |
| 55 | |
| 56 | /** |
| 57 | * Constrcuts a new AppCollector which runs on the provided volume. |
| 58 | * @param context Android context used to get |
| 59 | * @param volume Volume to check for apps. |
| 60 | */ |
Daniel Nishi | d54f3a4 | 2017-02-21 16:04:20 -0800 | [diff] [blame] | 61 | public AppCollector(Context context, @NonNull VolumeInfo volume) { |
| 62 | Preconditions.checkNotNull(volume); |
| 63 | |
Daniel Nishi | c7d9de5 | 2016-12-12 15:16:00 -0800 | [diff] [blame] | 64 | mBackgroundHandler = new BackgroundHandler(BackgroundThread.get().getLooper(), |
| 65 | volume, |
| 66 | context.getPackageManager(), |
| 67 | (UserManager) context.getSystemService(Context.USER_SERVICE)); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Returns a list of package stats for the context and volume. Note that in a multi-user |
| 72 | * environment, this may return stats for the same package multiple times. These "duplicate" |
| 73 | * entries will have the package stats for the package for a given user, not the package in |
| 74 | * aggregate. |
| 75 | * @param timeoutMillis Milliseconds before timing out and returning early with null. |
| 76 | */ |
| 77 | public List<PackageStats> getPackageStats(long timeoutMillis) { |
| 78 | synchronized(this) { |
| 79 | if (mStats == null) { |
| 80 | mStats = new CompletableFuture<>(); |
| 81 | mBackgroundHandler.sendEmptyMessage(BackgroundHandler.MSG_START_LOADING_SIZES); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | List<PackageStats> value = null; |
| 86 | try { |
| 87 | value = mStats.get(timeoutMillis, TimeUnit.MILLISECONDS); |
| 88 | } catch (InterruptedException | ExecutionException e) { |
| 89 | Log.e(TAG, "An exception occurred while getting app storage", e); |
| 90 | } catch (TimeoutException e) { |
| 91 | Log.e(TAG, "AppCollector timed out"); |
| 92 | } |
| 93 | return value; |
| 94 | } |
| 95 | |
| 96 | private class StatsObserver extends IPackageStatsObserver.Stub { |
| 97 | private AtomicInteger mCount; |
| 98 | private final ArrayList<PackageStats> mPackageStats; |
| 99 | |
| 100 | public StatsObserver(int count) { |
| 101 | mCount = new AtomicInteger(count); |
| 102 | mPackageStats = new ArrayList<>(count); |
| 103 | } |
| 104 | |
| 105 | @Override |
| 106 | public void onGetStatsCompleted(PackageStats packageStats, boolean succeeded) |
| 107 | throws RemoteException { |
| 108 | if (succeeded) { |
| 109 | mPackageStats.add(packageStats); |
| 110 | } |
| 111 | |
| 112 | if (mCount.decrementAndGet() == 0) { |
| 113 | mStats.complete(mPackageStats); |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | private class BackgroundHandler extends Handler { |
| 119 | static final int MSG_START_LOADING_SIZES = 0; |
| 120 | private final VolumeInfo mVolume; |
| 121 | private final PackageManager mPm; |
| 122 | private final UserManager mUm; |
| 123 | |
Daniel Nishi | d54f3a4 | 2017-02-21 16:04:20 -0800 | [diff] [blame] | 124 | BackgroundHandler(Looper looper, @NonNull VolumeInfo volume, PackageManager pm, UserManager um) { |
Daniel Nishi | c7d9de5 | 2016-12-12 15:16:00 -0800 | [diff] [blame] | 125 | super(looper); |
| 126 | mVolume = volume; |
| 127 | mPm = pm; |
| 128 | mUm = um; |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public void handleMessage(Message msg) { |
| 133 | switch (msg.what) { |
| 134 | case MSG_START_LOADING_SIZES: { |
| 135 | final List<ApplicationInfo> apps = mPm.getInstalledApplications( |
| 136 | PackageManager.GET_UNINSTALLED_PACKAGES |
| 137 | | PackageManager.GET_DISABLED_COMPONENTS); |
| 138 | |
| 139 | final List<ApplicationInfo> volumeApps = new ArrayList<>(); |
| 140 | for (ApplicationInfo app : apps) { |
| 141 | if (Objects.equals(app.volumeUuid, mVolume.getFsUuid())) { |
| 142 | volumeApps.add(app); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | List<UserInfo> users = mUm.getUsers(); |
| 147 | final int count = users.size() * volumeApps.size(); |
| 148 | if (count == 0) { |
| 149 | mStats.complete(new ArrayList<>()); |
| 150 | } |
| 151 | |
| 152 | // Kick off the async package size query for all apps. |
| 153 | final StatsObserver observer = new StatsObserver(count); |
| 154 | for (UserInfo user : users) { |
| 155 | for (ApplicationInfo app : volumeApps) { |
| 156 | mPm.getPackageSizeInfoAsUser(app.packageName, user.id, |
| 157 | observer); |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | } |