初心者がFuelPHPのMySQLバックアップタスクを書いてみた

oil さんでマイグレーション時にデータベースのオプションが足りなくて書き直したりしていたとき、

oil r migrate:down
oil r migrate:down

と戻しすぎてテーブルが吹っ飛んだのでバックアップタスクを書いてみました。
間違いなどありましたら是非是非ご指摘をお願いいたします。

gist letsspeak / mysqlbackup.php

fuel/app/tasks/mysqlbackup.php

<?php
 
namespace Fuel\Tasks;
 
class MySQLBackup 
{
  public static function system_ex($cmd, $stdin = "")
  {
    $descriptorspec = array(
      0 => array("pipe", "r"),
      1 => array("pipe", "w"),
      2 => array("pipe", "w")
    );
 
    $process = proc_open($cmd, $descriptorspec, $pipes);
    $result_message = "";
    $error_message = "";
    $return = null;
 
    if (is_resource($process))
    {
      fputs($pipes[0], $stdin);
      fclose($pipes[0]);
 
      while ($error = fgets($pipes[2])){
        $error_message .= $error;
      }
 
      while ($result = fgets($pipes[1])){
        $result_message .= $result;
      }
      foreach ($pipes as $k=>$_rs){
        if (is_resource($_rs)){
          fclose($_rs);
        }
      }
 
      $return = proc_close($process);
    }
 
    return array(
      'return' => $return,
      'stdout' => $result_message,
      'stderr' => $error_message,
    );
  }
 
  public static function run($args = NULL)
  {
    \Config::load('db', true);
    $name = \Config::get('db.active');
 
    $dsn = \Config::get('db.'.$name.'.connection.dsn');
    $username = \Config::get('db.'.$name.'.connection.username');
    $password = \Config::get('db.'.$name.'.connection.password');
 
    @preg_match('/^(.+):host=(.+);dbname=(.+)$/i', $dsn, $matches);
    
    if (count($matches) !== 4){
      $message = "Config dsn doesn't match.".PHP_EOL;
      $message .= 'check fuel/app/config/development/db.php'.PHP_EOL;
      echo $message;
      \Model_AlertMail::send_error('Fuel MySQLBackup Error', $message);
      return;
    }
 
    $dbtype = $matches[1];
    $dbhost = $matches[2];
    $dbname = $matches[3];
 
    if (strtolower($dbtype) !== 'mysql') {
      $message = 'Config database type is not MySQL.'.PHP_EOL;
      $message .= 'check fuel/app/config/development/db.php'.PHP_EOL;
      echo $message;
//      \Model_AlertMail::send_error('Fuel MySQLBackup Error', $message);
      return;
    }
 
 
    $fileDir = '/var/log/fuel/';
    $fileName = date('ymd').'_'.date('His').'.sql';
 
    if ( ! file_exists($fileDir) ) {
 
      try
      {
        if ( ! @mkdir($fileDir) ){
          $message = 'Cannnot create directory '.$fileDir.PHP_EOL;
          echo $message;
          \Model_AlertMail::send_error('Fuel MySQLBackup Error', $message);
          return;
        }
      }
      catch (\Exception $e)
      {
        echo "Cannnot create directory ",$fileDir.PHP_EOL;
        \Model_AlertMail::send_error('Fuel MySQLBackup Error', $message);
        return;
      }
    }
 
    $command = "mysqldump --default-character-set=binary ".$dbname." --host=".$dbhost." --user=".$username." --password=".$password." > ".$fileDir.$fileName;
    $return = MySQLBackup::system_ex($command);
    
    if ($return["stderr"] !== "") {
      $message = 'mysqldump failed for reasion:'.PHP_EOL.$return["stderr"];
      \Model_AlertMail::send_error('Fuel MySQLBackup Error', $message);
      return;
    }
 
    echo 'MySQLBackup successfully completed.'.PHP_EOL;
  
  }
 
}
/* End of file tasks/MySQLBackup.php */