1 | <?php |
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2 | /** |
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3 | * Class FileCache |
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4 | * |
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5 | * @filesource FileCache.php |
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6 | * @created 25.05.2017 |
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7 | * @package chillerlan\SimpleCache |
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8 | * @author Smiley <[email protected]> |
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9 | * @copyright 2017 Smiley |
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10 | * @license MIT |
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11 | */ |
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12 | |||
13 | namespace chillerlan\SimpleCache; |
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14 | |||
15 | use chillerlan\Settings\SettingsContainerInterface; |
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16 | use FilesystemIterator, RecursiveDirectoryIterator, RecursiveIteratorIterator, stdClass; |
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17 | use Psr\Log\LoggerInterface; |
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18 | |||
19 | use function dirname, file_get_contents, file_put_contents, hash, is_dir, is_file, is_writable, |
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20 | mkdir, rtrim, serialize, strpos, str_replace, time, unlink, unserialize; |
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21 | |||
22 | use const DIRECTORY_SEPARATOR; |
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23 | |||
24 | class FileCache extends CacheDriverAbstract{ |
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25 | |||
26 | protected string $cachedir; |
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27 | |||
28 | /** |
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29 | * FileCache constructor. |
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30 | * |
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31 | * @param \chillerlan\Settings\SettingsContainerInterface|null $options |
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32 | * @param \Psr\Log\LoggerInterface|null $logger |
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33 | * |
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34 | * @throws \chillerlan\SimpleCache\CacheException |
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35 | */ |
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36 | public function __construct(SettingsContainerInterface $options = null, LoggerInterface $logger = null){ |
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37 | parent::__construct($options, $logger); |
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38 | |||
39 | $this->cachedir = rtrim($this->options->cacheFilestorage, '/\\').DIRECTORY_SEPARATOR; |
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40 | |||
41 | if(!is_dir($this->cachedir)){ |
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42 | throw new CacheException('invalid cachedir "'.$this->cachedir.'"'); |
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43 | } |
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44 | |||
45 | if(!is_writable($this->cachedir)){ |
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46 | throw new CacheException('cachedir is read-only. permissions?'); |
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47 | } |
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48 | |||
49 | } |
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50 | |||
51 | /** @inheritdoc */ |
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52 | public function get($key, $default = null){ |
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53 | $filename = $this->getFilepath($this->checkKey($key)); |
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54 | |||
55 | if(is_file($filename)){ |
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56 | $content = file_get_contents($filename); |
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57 | |||
58 | if(!empty($content)){ |
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59 | $data = unserialize($content); |
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60 | |||
61 | if($data->ttl === null || $data->ttl > time()){ |
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62 | return $data->content; |
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63 | } |
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64 | |||
65 | unlink($filename); |
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66 | } |
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67 | |||
68 | } |
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69 | |||
70 | return $default; |
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71 | } |
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72 | |||
73 | /** @inheritdoc */ |
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74 | public function set($key, $value, $ttl = null):bool{ |
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75 | $ttl = $this->getTTL($ttl); |
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76 | |||
77 | $file = $this->getFilepath($this->checkKey($key)); |
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78 | $dir = dirname($file); |
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79 | |||
80 | if(!is_dir($dir)){ |
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81 | mkdir($dir, 0755, true); |
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82 | } |
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83 | |||
84 | $data = new stdClass; |
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85 | $data->ttl = null; |
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86 | $data->content = $value; |
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87 | |||
88 | if($ttl !== null){ |
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89 | $data->ttl = time() + $ttl; |
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90 | } |
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91 | |||
92 | file_put_contents($file, serialize($data)); |
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93 | |||
94 | if(is_file($file)){ |
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95 | return true; |
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96 | } |
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97 | |||
98 | return false; // @codeCoverageIgnore |
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99 | } |
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100 | |||
101 | /** @inheritdoc */ |
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102 | public function delete($key):bool{ |
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103 | $filename = $this->getFilepath($this->checkKey($key)); |
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104 | |||
105 | if(is_file($filename)){ |
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106 | return unlink($filename); |
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107 | } |
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108 | |||
109 | return false; |
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110 | } |
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111 | |||
112 | /** @inheritdoc */ |
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113 | public function clear():bool{ |
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114 | $iterator = new RecursiveDirectoryIterator($this->cachedir, FilesystemIterator::CURRENT_AS_PATHNAME|FilesystemIterator::SKIP_DOTS); |
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115 | $return = []; |
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116 | |||
117 | foreach(new RecursiveIteratorIterator($iterator) as $path){ |
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118 | |||
119 | // skip files in the parent directory - cache files are only under /a/ab/[hash] |
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120 | if(strpos(str_replace($this->cachedir, '', $path), DIRECTORY_SEPARATOR) === false){ |
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121 | continue; |
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122 | } |
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123 | |||
124 | $return[] = unlink($path); |
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125 | } |
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126 | |||
127 | return $this->checkReturn($return); // @codeCoverageIgnore |
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128 | } |
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129 | |||
130 | /** |
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131 | * @param string $key |
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132 | * |
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133 | * @return string |
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134 | */ |
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135 | protected function getFilepath(string $key):string{ |
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136 | $h = hash('sha256', $key); |
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137 | |||
138 | return $this->cachedir.$h[0].DIRECTORY_SEPARATOR.$h[0].$h[1].DIRECTORY_SEPARATOR.$h; |
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139 | } |
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140 | |||
141 | } |
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142 |