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      1 /*
      2  * Copyright (C) 2017 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.settings.applications;
     18 
     19 import android.annotation.NonNull;
     20 import android.content.Context;
     21 import android.content.pm.ApplicationInfo;
     22 import android.content.pm.PackageManager.NameNotFoundException;
     23 import android.os.UserHandle;
     24 import android.util.Log;
     25 
     26 import com.android.internal.util.Preconditions;
     27 import com.android.settingslib.applications.StorageStatsSource;
     28 import com.android.settingslib.applications.StorageStatsSource.AppStorageStats;
     29 import com.android.settingslib.utils.AsyncLoader;
     30 
     31 import java.io.IOException;
     32 
     33 /**
     34  * Fetches the storage stats using the StorageStatsManager for a given package and user tuple.
     35  */
     36 public class FetchPackageStorageAsyncLoader extends AsyncLoader<AppStorageStats> {
     37     private static final String TAG = "FetchPackageStorage";
     38     private final StorageStatsSource mSource;
     39     private final ApplicationInfo mInfo;
     40     private final UserHandle mUser;
     41 
     42     public FetchPackageStorageAsyncLoader(Context context, @NonNull StorageStatsSource source,
     43             @NonNull ApplicationInfo info, @NonNull UserHandle user) {
     44         super(context);
     45         mSource = Preconditions.checkNotNull(source);
     46         mInfo = info;
     47         mUser = user;
     48     }
     49 
     50     @Override
     51     public AppStorageStats loadInBackground() {
     52         AppStorageStats result = null;
     53         try {
     54             result = mSource.getStatsForPackage(mInfo.volumeUuid, mInfo.packageName, mUser);
     55         } catch (NameNotFoundException | IOException e) {
     56             Log.w(TAG, "Package may have been removed during query, failing gracefully", e);
     57         }
     58         return result;
     59     }
     60 
     61     @Override
     62     protected void onDiscardResult(AppStorageStats result) {
     63     }
     64 }
     65