# FileSystemSegmentHandler.class.php

Go to the documentation of this file.

    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2006-2008 by Konstantin V. Arkhipov                     *
    00004  *                                                                         *
    00005  *   This program is free software; you can redistribute it and/or modify  *
    00006  *   it under the terms of the GNU Lesser General Public License as        *
    00007  *   published by the Free Software Foundation; either version 3 of the    *
    00008  *   License, or (at your option) any later version.                       *
    00009  *                                                                         *
    00010  ***************************************************************************/
    00011
    00015     final class FileSystemSegmentHandler implements SegmentHandler
    00016     {
    00017         private $path = null;
    00018
    00019         public function __construct($segmentId)
    00020         {
    00021             $path =
    00022                 ONPHP_TEMP_PATH
    00023                 .'fsdw'.DIRECTORY_SEPARATOR
    00024                 .$segmentId
    00025                 .DIRECTORY_SEPARATOR;
    00026
    00027             try {
    00028                 mkdir($path, 0700, true);
    00029             } catch (BaseException $e) {
    00030                 // already created in race
    00031             }
    00032
    00033             $this->path = $path;
    00034         }
    00035
    00036         public function touch($key)
    00037         {
    00038             try {
    00039                 return touch($this->path.$key);
    00040             } catch (BaseException $e) {
    00041                 return false;
    00042             }
    00043
    00044             Assert::isUnreachable();
    00045         }
    00046
    00047         public function unlink($key)
    00048         {
    00049             try {
    00050                 return unlink($this->path.$key);
    00051             } catch (BaseException $e) {
    00052                 return false;
    00053             }
    00054
    00055             Assert::isUnreachable();
    00056         }
    00057
    00058         public function ping($key)
    00059         {
    00060             return is_readable($this->path.$key);
    00061         }
    00062
    00063         public function drop()
    00064         {
    00065             // removed, but not created yet
    00066             if (!is_writable($this->path))
    00067                 return true;
    00068
    00069             $toRemove =
    00070                 realpath($this->path)
    00071                 .'.'.microtime(true)
    00072                 .getmypid().'.'
    00073                 .'.removing';
    00074
    00075             try {
    00076                 rename($this->path, $toRemove);
    00077             } catch (BaseException $e) {
    00078                 // already removed during race
    00079                 return true;
    00080             }
    00081
    00082             FileUtils::removeDirectory($toRemove, true);
    00083
    00084             return true;
    00085         }
    00086     }
    00087 ?>