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      1 /*
      2  * Copyright (C) 2015 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.messaging.datamodel.action;
     18 
     19 import android.content.Context;
     20 import android.os.Parcel;
     21 import android.os.Parcelable;
     22 
     23 import com.android.messaging.Factory;
     24 import com.android.messaging.datamodel.DatabaseHelper;
     25 import com.android.messaging.util.DebugUtils;
     26 import com.android.messaging.util.LogUtil;
     27 
     28 import java.io.BufferedInputStream;
     29 import java.io.BufferedOutputStream;
     30 import java.io.File;
     31 import java.io.FileInputStream;
     32 import java.io.FileOutputStream;
     33 import java.io.IOException;
     34 
     35 public class DumpDatabaseAction extends Action implements Parcelable {
     36     private static final String TAG = LogUtil.BUGLE_DATAMODEL_TAG;
     37     public static final String DUMP_NAME = "db_copy.db";
     38     private static final int BUFFER_SIZE = 16384;
     39 
     40     /**
     41      * Copy the database to external storage
     42      */
     43     public static void dumpDatabase() {
     44         final DumpDatabaseAction action = new DumpDatabaseAction();
     45         action.start();
     46     }
     47 
     48     private DumpDatabaseAction() {
     49     }
     50 
     51     @Override
     52     protected Object executeAction() {
     53         final Context context = Factory.get().getApplicationContext();
     54         final String dbName = DatabaseHelper.DATABASE_NAME;
     55         BufferedOutputStream bos = null;
     56         BufferedInputStream bis = null;
     57 
     58         long originalSize = 0;
     59         final File inFile = context.getDatabasePath(dbName);
     60         if (inFile.exists() && inFile.isFile()) {
     61             originalSize = inFile.length();
     62         }
     63         final File outFile = DebugUtils.getDebugFile(DUMP_NAME, true);
     64         if (outFile != null) {
     65             int totalBytes = 0;
     66             try {
     67                 bos = new BufferedOutputStream(new FileOutputStream(outFile));
     68                 bis = new BufferedInputStream(new FileInputStream(inFile));
     69 
     70                 final byte[] buffer = new byte[BUFFER_SIZE];
     71                 int bytesRead;
     72                 while ((bytesRead = bis.read(buffer)) > 0) {
     73                     bos.write(buffer, 0, bytesRead);
     74                     totalBytes += bytesRead;
     75                 }
     76             } catch (final IOException e) {
     77                 LogUtil.w(TAG, "Exception copying the database;"
     78                         + " destination may not be complete.", e);
     79             } finally {
     80                 if (bos != null) {
     81                     try {
     82                         bos.close();
     83                     } catch (final IOException e) {
     84                         // Nothing to do
     85                     }
     86                 }
     87 
     88                 if (bis != null) {
     89                     try {
     90                         bis.close();
     91                     } catch (final IOException e) {
     92                         // Nothing to do
     93                     }
     94                 }
     95                 DebugUtils.ensureReadable(outFile);
     96                 LogUtil.i(TAG, "Dump complete; orig size: " + originalSize +
     97                         ", copy size: " + totalBytes);
     98             }
     99         }
    100         return null;
    101     }
    102 
    103     private DumpDatabaseAction(final Parcel in) {
    104         super(in);
    105     }
    106 
    107     public static final Parcelable.Creator<DumpDatabaseAction> CREATOR
    108             = new Parcelable.Creator<DumpDatabaseAction>() {
    109         @Override
    110         public DumpDatabaseAction createFromParcel(final Parcel in) {
    111             return new DumpDatabaseAction(in);
    112         }
    113 
    114         @Override
    115         public DumpDatabaseAction[] newArray(final int size) {
    116             return new DumpDatabaseAction[size];
    117         }
    118     };
    119 
    120     @Override
    121     public void writeToParcel(final Parcel parcel, final int flags) {
    122         writeActionToParcel(parcel, flags);
    123     }
    124 }
    125