示例#1
0
 /**
  * Runs a restoration step and returns an array to be used in the response.
  *
  * @return  array
  *
  * @throws \Exception
  */
 public function stepRestoration()
 {
     $parts = $this->getParam('parts', 1);
     $this->openFile();
     $this->lineNumber = $this->start;
     $this->totalSizeRead = 0;
     $this->queries = 0;
     while ($this->timer->getTimeLeft() > 0) {
         $query = '';
         // Get the next query line
         try {
             $query = $this->readNextLine();
         } catch (\Exception $exc) {
             if ($exc->getCode() == 200) {
                 break;
             } elseif ($exc->getCode() == 201) {
                 continue;
             }
         }
         if (empty($query)) {
             continue;
         }
         // Update variables
         $this->totalSizeRead += strlen($query);
         $this->totalQueries++;
         $this->queries++;
         $this->lineNumber++;
         // Process the query line, running drop/rename queries as necessary
         $this->processQueryLine($query);
     }
     // Get the current file position
     $current_foffset = ftell($this->file);
     if ($current_foffset === false) {
         if (is_resource($this->file)) {
             @fclose($this->file);
         }
         throw new \Exception(Text::_('AWF_RESTORE_ERROR_CANTREADPOINTER'));
     } else {
         if (is_null($this->fileOffset)) {
             $this->fileOffset = 0;
         }
         $bytes_in_step = $current_foffset - $this->fileOffset;
         $this->runSize = (is_null($this->runSize) ? 0 : $this->runSize) + $bytes_in_step;
         $this->fileOffset = $current_foffset;
     }
     // Return statistics
     $bytes_togo = $this->totalSize - $this->runSize;
     // Check for global EOF
     if ($this->currentPart >= $parts - 1 && feof($this->file)) {
         $bytes_togo = 0;
     }
     // Save variables in storage
     $this->setToStorage('start', $this->start);
     $this->setToStorage('foffset', $this->fileOffset);
     $this->setToStorage('totalqueries', $this->totalQueries);
     $this->setToStorage('runsize', $this->runSize);
     if ($bytes_togo == 0) {
         // Clear stored variables if we're finished
         $this->removeInformationFromStorage();
     }
     // Calculate estimated time
     $bytesPerSecond = $bytes_in_step / $this->timer->getRunningTime();
     if ($bytesPerSecond <= 0.01) {
         $remainingSeconds = 120;
     } else {
         $remainingSeconds = round($bytes_togo / $bytesPerSecond, 0);
     }
     // Return meaningful data
     return array('percent' => round(100 * ($this->runSize / $this->totalSize), 1), 'restored' => $this->sizeformat($this->runSize), 'total' => $this->sizeformat($this->totalSize), 'queries_restored' => $this->totalQueries, 'current_line' => $this->lineNumber, 'current_part' => $this->currentPart, 'total_parts' => $parts, 'eta' => $this->etaformat($remainingSeconds), 'error' => '', 'done' => $bytes_togo == 0 ? '1' : '0');
 }
示例#2
0
 /**
  * Performs the staggered download of file.
  *
  * @param   array $params A parameters array, as sent by the user interface
  *
  * @return  array  A return status array
  */
 public function importFromURL($params)
 {
     $this->params = $params;
     // Fetch data
     $filename = $this->getParam('file');
     $frag = $this->getParam('frag', -1);
     $totalSize = $this->getParam('totalSize', -1);
     $doneSize = $this->getParam('doneSize', -1);
     $maxExecTime = $this->getParam('maxExecTime', 5);
     $runTimeBias = $this->getParam('runTimeBias', 75);
     $minExecTime = $this->getParam('minExecTime', 1);
     $localFilename = 'download.zip';
     $tmpDir = Application::getInstance()->getContainer()->temporaryPath;
     $tmpDir = rtrim($tmpDir, '/\\');
     $localFilename = $this->getParam('localFilename', $localFilename);
     // Init retArray
     $retArray = array("status" => true, "error" => '', "frag" => $frag, "totalSize" => $totalSize, "doneSize" => $doneSize, "percent" => 0);
     try {
         $timer = new Timer($minExecTime, $runTimeBias);
         $start = $timer->getRunningTime();
         // Mark the start of this download
         $break = false;
         // Don't break the step
         // Figure out where on Earth to put that file
         $local_file = $tmpDir . '/' . $localFilename;
         //debugMsg("- Importing from $filename");
         while ($timer->getTimeLeft() > 0 && !$break) {
             // Do we have to initialize the file?
             if ($frag == -1) {
                 //debugMsg("-- First frag, killing local file");
                 // Currently downloaded size
                 $doneSize = 0;
                 if (@file_exists($local_file)) {
                     @unlink($local_file);
                 }
                 // Delete and touch the output file
                 $fp = @fopen($local_file, 'wb');
                 if ($fp !== false) {
                     @fclose($fp);
                 }
                 // Init
                 $frag = 0;
                 //debugMsg("-- First frag, getting the file size");
                 $retArray['totalSize'] = $this->adapter->getFileSize($filename);
                 $totalSize = $retArray['totalSize'];
             }
             // Calculate from and length
             $length = 1048576;
             $from = $frag * $length;
             $to = $length + $from - 1;
             // Try to download the first frag
             $required_time = 1.0;
             //debugMsg("-- Importing frag $frag, byte position from/to: $from / $to");
             try {
                 $result = $this->adapter->downloadAndReturn($filename, $from, $to);
                 if ($result === false) {
                     throw new \Exception(Text::sprintf('AWF_DOWNLOAD_ERR_LIB_COULDNOTDOWNLOADFROMURL', $filename), 500);
                 }
             } catch (\Exception $e) {
                 $result = false;
                 $error = $e->getMessage();
             }
             if ($result === false) {
                 // Failed download
                 if ($frag == 0) {
                     // Failure to download first frag = failure to download. Period.
                     $retArray['status'] = false;
                     $retArray['error'] = $error;
                     //debugMsg("-- Download FAILED");
                     return $retArray;
                 } else {
                     // Since this is a staggered download, consider this normal and finish
                     $frag = -1;
                     //debugMsg("-- Import complete");
                     $totalSize = $doneSize;
                     $break = true;
                 }
             }
             // Add the currently downloaded frag to the total size of downloaded files
             if ($result) {
                 $filesize = strlen($result);
                 //debugMsg("-- Successful download of $filesize bytes");
                 $doneSize += $filesize;
                 // Append the file
                 $fp = @fopen($local_file, 'ab');
                 if ($fp === false) {
                     //debugMsg("-- Can't open local file $local_file for writing");
                     // Can't open the file for writing
                     $retArray['status'] = false;
                     $retArray['error'] = Text::sprintf('AWF_DOWNLOAD_ERR_LIB_COULDNOTWRITELOCALFILE', $local_file);
                     return $retArray;
                 }
                 fwrite($fp, $result);
                 fclose($fp);
                 //debugMsg("-- Appended data to local file $local_file");
                 $frag++;
                 //debugMsg("-- Proceeding to next fragment, frag $frag");
                 if ($filesize < $length || $filesize > $length) {
                     // A partial download or a download larger than the frag size means we are done
                     $frag = -1;
                     //debugMsg("-- Import complete (partial download of last frag)");
                     $totalSize = $doneSize;
                     $break = true;
                 }
             }
             // Advance the frag pointer and mark the end
             $end = $timer->getRunningTime();
             // Do we predict that we have enough time?
             $required_time = max(1.1 * ($end - $start), $required_time);
             if ($required_time > 10 - $end + $start) {
                 $break = true;
             }
             $start = $end;
         }
         if ($frag == -1) {
             $percent = 100;
         } elseif ($doneSize <= 0) {
             $percent = 0;
         } else {
             if ($totalSize > 0) {
                 $percent = 100 * ($doneSize / $totalSize);
             } else {
                 $percent = 0;
             }
         }
         // Update $retArray
         $retArray = array("status" => true, "error" => '', "frag" => $frag, "totalSize" => $totalSize, "doneSize" => $doneSize, "percent" => $percent);
     } catch (\Exception $e) {
         //debugMsg("EXCEPTION RAISED:");
         //debugMsg($e->getMessage());
         $retArray['status'] = false;
         $retArray['error'] = $e->getMessage();
     }
     return $retArray;
 }