Po-Chien Hsueh | 64aa782 | 2019-01-12 00:40:02 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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.dynandroid; |
| 18 | |
| 19 | import android.os.AsyncTask; |
| 20 | import android.os.DynamicAndroidManager; |
| 21 | import android.util.Log; |
| 22 | import android.webkit.URLUtil; |
| 23 | |
| 24 | import java.io.BufferedInputStream; |
| 25 | import java.io.IOException; |
| 26 | import java.io.InputStream; |
| 27 | import java.net.URL; |
| 28 | import java.util.Arrays; |
| 29 | import java.util.Locale; |
| 30 | import java.util.zip.GZIPInputStream; |
| 31 | |
| 32 | |
| 33 | class InstallationAsyncTask extends AsyncTask<String, Long, Integer> { |
| 34 | |
| 35 | private static final String TAG = "InstallationAsyncTask"; |
| 36 | |
| 37 | private static final int READ_BUFFER_SIZE = 1 << 19; |
| 38 | |
| 39 | private class InvalidImageUrlException extends RuntimeException { |
| 40 | private InvalidImageUrlException(String message) { |
| 41 | super(message); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | |
| 46 | /** Not completed, including being cancelled */ |
| 47 | static final int NO_RESULT = 0; |
| 48 | static final int RESULT_OK = 1; |
| 49 | static final int RESULT_ERROR_IO = 2; |
| 50 | static final int RESULT_ERROR_INVALID_URL = 3; |
| 51 | static final int RESULT_ERROR_EXCEPTION = 6; |
| 52 | |
| 53 | interface InstallStatusListener { |
| 54 | void onProgressUpdate(long installedSize); |
| 55 | void onResult(int resultCode); |
| 56 | void onCancelled(); |
| 57 | } |
| 58 | |
| 59 | private final String mUrl; |
| 60 | private final long mSystemSize; |
| 61 | private final long mUserdataSize; |
| 62 | private final DynamicAndroidManager mDynamicAndroid; |
| 63 | private final InstallStatusListener mListener; |
| 64 | private DynamicAndroidManager.Session mInstallationSession; |
| 65 | |
| 66 | private long mInstalledSize; |
| 67 | private long mReportedInstalledSize; |
| 68 | private int mResult = NO_RESULT; |
| 69 | |
| 70 | private InputStream mStream; |
| 71 | |
| 72 | |
| 73 | InstallationAsyncTask(String url, long systemSize, long userdataSize, |
| 74 | DynamicAndroidManager dynAndroid, InstallStatusListener listener) { |
| 75 | mUrl = url; |
| 76 | mSystemSize = systemSize; |
| 77 | mUserdataSize = userdataSize; |
| 78 | mDynamicAndroid = dynAndroid; |
| 79 | mListener = listener; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | protected void onPreExecute() { |
| 84 | mListener.onProgressUpdate(0); |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | protected Integer doInBackground(String... voids) { |
| 89 | Log.d(TAG, "Start doInBackground(), URL: " + mUrl); |
| 90 | |
| 91 | try { |
| 92 | // call start in background |
| 93 | mInstallationSession = mDynamicAndroid.startInstallation(mSystemSize, mUserdataSize); |
| 94 | |
| 95 | if (mInstallationSession == null) { |
| 96 | Log.e(TAG, "Failed to start installation with requested size: " |
| 97 | + (mSystemSize + mUserdataSize)); |
| 98 | |
| 99 | return RESULT_ERROR_IO; |
| 100 | } |
| 101 | |
| 102 | initInputStream(); |
| 103 | |
| 104 | byte[] bytes = new byte[READ_BUFFER_SIZE]; |
| 105 | |
| 106 | int numBytesRead; |
| 107 | long minStepToReport = mSystemSize / 100; |
| 108 | |
| 109 | Log.d(TAG, "Start installation loop"); |
| 110 | while ((numBytesRead = mStream.read(bytes, 0, READ_BUFFER_SIZE)) != -1) { |
| 111 | if (isCancelled()) { |
| 112 | break; |
| 113 | } |
| 114 | |
| 115 | byte[] writeBuffer = numBytesRead == READ_BUFFER_SIZE |
| 116 | ? bytes : Arrays.copyOf(bytes, numBytesRead); |
| 117 | |
| 118 | if (!mInstallationSession.write(writeBuffer)) { |
| 119 | throw new IOException("Failed write() to DynamicAndroid"); |
| 120 | } |
| 121 | |
| 122 | mInstalledSize += numBytesRead; |
| 123 | |
| 124 | if (mInstalledSize > mReportedInstalledSize + minStepToReport) { |
| 125 | publishProgress(mInstalledSize); |
| 126 | mReportedInstalledSize = mInstalledSize; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | return RESULT_OK; |
| 131 | |
| 132 | } catch (IOException e) { |
| 133 | e.printStackTrace(); |
| 134 | return RESULT_ERROR_IO; |
| 135 | |
| 136 | } catch (InvalidImageUrlException e) { |
| 137 | e.printStackTrace(); |
| 138 | return RESULT_ERROR_INVALID_URL; |
| 139 | |
| 140 | } catch (Exception e) { |
| 141 | e.printStackTrace(); |
| 142 | return RESULT_ERROR_EXCEPTION; |
| 143 | |
| 144 | } finally { |
| 145 | close(); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | @Override |
| 150 | protected void onCancelled() { |
| 151 | Log.d(TAG, "onCancelled(), URL: " + mUrl); |
| 152 | |
| 153 | close(); |
| 154 | |
| 155 | mListener.onCancelled(); |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | protected void onPostExecute(Integer result) { |
| 160 | Log.d(TAG, "onPostExecute(), URL: " + mUrl + ", result: " + result); |
| 161 | |
| 162 | close(); |
| 163 | |
| 164 | mResult = result; |
| 165 | mListener.onResult(mResult); |
| 166 | } |
| 167 | |
| 168 | @Override |
| 169 | protected void onProgressUpdate(Long... values) { |
| 170 | long progress = values[0]; |
| 171 | mListener.onProgressUpdate(progress); |
| 172 | } |
| 173 | |
| 174 | private void initInputStream() throws IOException, InvalidImageUrlException { |
| 175 | if (URLUtil.isNetworkUrl(mUrl) || URLUtil.isFileUrl(mUrl)) { |
| 176 | mStream = new BufferedInputStream(new GZIPInputStream(new URL(mUrl).openStream())); |
| 177 | } else { |
| 178 | throw new InvalidImageUrlException( |
| 179 | String.format(Locale.US, "Unsupported file source: %s", mUrl)); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | private void close() { |
| 184 | try { |
| 185 | if (mStream != null) { |
| 186 | mStream.close(); |
| 187 | mStream = null; |
| 188 | } |
| 189 | } catch (IOException e) { |
| 190 | // ignore |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | int getResult() { |
| 195 | return mResult; |
| 196 | } |
| 197 | |
| 198 | boolean commit() { |
| 199 | if (mInstallationSession == null) { |
| 200 | return false; |
| 201 | } |
| 202 | |
| 203 | return mInstallationSession.commit(); |
| 204 | } |
| 205 | } |