top-think /
framework
| Total Complexity | 43 |
| Total Lines | 355 |
| Duplicated Lines | 0 % |
| Coverage | 69.39% |
| Changes | 4 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Driver often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Driver, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 29 | abstract class Driver implements CacheHandlerInterface |
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| 30 | { |
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| 31 | /** |
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| 32 | * 驱动句柄 |
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| 33 | * @var object |
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| 34 | */ |
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| 35 | protected $handler = null; |
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| 36 | |||
| 37 | /** |
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| 38 | * 缓存读取次数 |
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| 39 | * @var integer |
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| 40 | */ |
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| 41 | protected $readTimes = 0; |
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| 42 | |||
| 43 | /** |
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| 44 | * 缓存写入次数 |
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| 45 | * @var integer |
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| 46 | */ |
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| 47 | protected $writeTimes = 0; |
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| 48 | |||
| 49 | /** |
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| 50 | * 缓存参数 |
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| 51 | * @var array |
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| 52 | */ |
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| 53 | protected $options = []; |
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| 54 | |||
| 55 | /** |
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| 56 | * 缓存标签 |
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| 57 | * @var array |
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| 58 | */ |
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| 59 | protected $tag = []; |
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| 60 | |||
| 61 | /** |
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| 62 | * 获取有效期 |
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| 63 | * @access protected |
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| 64 | * @param integer|DateInterval|DateTimeInterface $expire 有效期 |
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| 65 | * @return int |
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| 66 | */ |
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| 67 | 3 | protected function getExpireTime(int | DateInterval | DateTimeInterface $expire): int |
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| 68 | { |
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| 69 | 3 | if ($expire instanceof DateTimeInterface) { |
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| 70 | $expire = $expire->getTimestamp() - time(); |
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| 71 | 3 | } elseif ($expire instanceof DateInterval) { |
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| 72 | $expire = DateTime::createFromFormat('U', (string) time()) |
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| 73 | ->add($expire) |
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| 74 | ->format('U') - time(); |
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| 75 | } |
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| 76 | |||
| 77 | 3 | return $expire; |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * 获取实际的缓存标识 |
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| 82 | * @access public |
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| 83 | * @param string $name 缓存名 |
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| 84 | * @return string |
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| 85 | */ |
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| 86 | public function getCacheKey(string $name): string |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * 读取缓存并删除 |
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| 93 | * @access public |
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| 94 | * @param string $name 缓存变量名 |
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| 95 | * @param mixed $default 默认值 |
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| 96 | * @return mixed |
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| 97 | */ |
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| 98 | public function pull($name, $default = null) |
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| 99 | { |
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| 100 | if ($this->has($name)) { |
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| 101 | $result = $this->get($name, $default); |
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| 102 | $this->delete($name); |
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| 103 | return $result; |
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| 104 | } |
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| 105 | return $this->getDefaultValue($name, $default); |
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| 106 | } |
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| 107 | |||
| 108 | /** |
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| 109 | * 追加（数组）缓存 |
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| 110 | * @access public |
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| 111 | * @param string $name 缓存变量名 |
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| 112 | * @param mixed $value 存储数据 |
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| 113 | * @return void |
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| 114 | */ |
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| 115 | 3 | public function push($name, $value): void |
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| 116 | { |
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| 117 | 3 | $item = $this->get($name, []); |
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| 118 | |||
| 119 | 3 | if (!is_array($item)) { |
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| 120 | throw new InvalidArgumentException('only array cache can be push'); |
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| 121 | } |
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| 122 | |||
| 123 | 3 | $item[] = $value; |
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| 124 | |||
| 125 | 3 | if (count($item) > 1000) { |
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| 126 | array_shift($item); |
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| 127 | } |
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| 128 | |||
| 129 | 3 | $item = array_unique($item); |
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| 130 | |||
| 131 | 3 | $this->set($name, $item); |
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| 132 | } |
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| 133 | |||
| 134 | /** |
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| 135 | * 追加TagSet数据 |
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| 136 | * @access public |
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| 137 | * @param string $name 缓存变量名 |
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| 138 | * @param mixed $value 存储数据 |
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| 139 | * @return void |
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| 140 | */ |
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| 141 | 3 | public function append($name, $value): void |
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| 144 | } |
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| 145 | |||
| 146 | /** |
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| 147 | * 如果不存在则写入缓存 |
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| 148 | * @access public |
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| 149 | * @param string $name 缓存变量名 |
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| 150 | * @param mixed $value 存储数据 |
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| 151 | * @param int|DateInterval|DateTimeInterface $expire 有效时间 0为永久 |
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| 152 | * @return mixed |
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| 153 | */ |
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| 154 | 3 | public function remember($name, $value, $expire = null) |
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| 155 | { |
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| 156 | 3 | if ($this->has($name)) { |
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| 157 | if (($hit = $this->get($name)) !== null) { |
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| 158 | return $hit; |
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| 159 | } |
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| 160 | } |
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| 161 | |||
| 162 | 3 | $time = time(); |
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| 163 | |||
| 164 | 3 | while ($time + 5 > time() && $this->has($name . '_lock')) { |
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| 165 | // 存在锁定则等待 |
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| 166 | usleep(200000); |
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| 167 | } |
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| 168 | |||
| 169 | try { |
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| 170 | // 锁定 |
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| 171 | 3 | $this->set($name . '_lock', true); |
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| 172 | |||
| 173 | 3 | if ($value instanceof Closure) { |
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| 174 | // 获取缓存数据 |
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| 175 | $value = Container::getInstance()->invokeFunction($value); |
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| 176 | } |
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| 177 | |||
| 178 | // 缓存数据 |
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| 179 | 3 | $this->set($name, $value, $expire); |
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Bug
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| 180 | |||
| 181 | // 解锁 |
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| 182 | 3 | $this->delete($name . '_lock'); |
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| 183 | } catch (Exception | Throwable $e) { |
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| 184 | $this->delete($name . '_lock'); |
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| 185 | throw $e; |
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| 186 | } |
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| 187 | |||
| 188 | 3 | return $value; |
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| 189 | } |
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| 190 | |||
| 191 | /** |
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| 192 | * 缓存标签 |
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| 193 | * @access public |
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| 194 | * @param string|array $name 标签名 |
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| 195 | * @return TagSet |
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| 196 | */ |
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| 197 | 3 | public function tag($name) |
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| 198 | { |
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| 199 | 3 | $name = (array) $name; |
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| 200 | 3 | $key = implode('-', $name); |
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| 201 | |||
| 202 | 3 | if (!isset($this->tag[$key])) { |
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| 203 | 3 | $this->tag[$key] = new TagSet($name, $this); |
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| 204 | } |
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| 205 | |||
| 206 | 3 | return $this->tag[$key]; |
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| 207 | } |
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| 208 | |||
| 209 | /** |
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| 210 | * 获取标签包含的缓存标识 |
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| 211 | * @access public |
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| 212 | * @param string $tag 标签标识 |
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| 213 | * @return array |
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| 214 | */ |
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| 215 | 3 | public function getTagItems(string $tag): array |
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| 216 | { |
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| 217 | 3 | $name = $this->getTagKey($tag); |
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| 218 | 3 | return $this->get($name, []); |
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| 219 | } |
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| 220 | |||
| 221 | /** |
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| 222 | * 获取实际标签名 |
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| 223 | * @access public |
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| 224 | * @param string $tag 标签名 |
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| 225 | * @return string |
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| 226 | */ |
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| 227 | 3 | public function getTagKey(string $tag): string |
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| 228 | { |
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| 229 | 3 | return $this->options['tag_prefix'] . md5($tag); |
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| 230 | } |
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| 231 | |||
| 232 | /** |
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| 233 | * 序列化数据 |
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| 234 | * @access protected |
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| 235 | * @param mixed $data 缓存数据 |
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| 236 | * @return string |
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| 237 | */ |
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| 238 | 3 | protected function serialize($data): string |
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| 239 | { |
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| 240 | 3 | if (is_numeric($data)) { |
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| 241 | 3 | return (string) $data; |
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| 242 | } |
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| 243 | |||
| 244 | 3 | $serialize = $this->options['serialize'][0] ?? "serialize"; |
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| 245 | |||
| 246 | 3 | return $serialize($data); |
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| 247 | } |
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| 248 | |||
| 249 | /** |
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| 250 | * 反序列化数据 |
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| 251 | * @access protected |
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| 252 | * @param string $data 缓存数据 |
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| 253 | * @return mixed |
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| 254 | */ |
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| 255 | 3 | protected function unserialize(string $data) |
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| 256 | { |
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| 257 | 3 | if (is_numeric($data)) { |
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| 258 | 3 | return $data; |
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| 259 | } |
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| 260 | try { |
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| 261 | 3 | $unserialize = $this->options['serialize'][1] ?? "unserialize"; |
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| 262 | 3 | $content = $unserialize($data); |
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| 263 | 3 | if (is_null($content)) { |
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| 264 | 3 | throw new InvalidCacheException; |
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| 265 | } else { |
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| 266 | 3 | return $content; |
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| 267 | } |
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| 268 | 3 | } catch (Exception | Throwable $e) { |
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| 269 | 3 | throw new InvalidCacheException; |
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| 270 | } |
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| 271 | } |
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| 272 | |||
| 273 | /** |
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| 274 | * 获取默认值 |
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| 275 | * @access protected |
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| 276 | * @param string $name 缓存标识 |
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| 277 | * @param mixed $default 默认值 |
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| 278 | * @param bool $fail 是否有异常 |
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| 279 | * @return mixed |
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| 280 | */ |
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| 281 | 3 | protected function getDefaultValue($name, $default, $fail = false) |
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| 282 | { |
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| 283 | 3 | if ($fail && $this->options['fail_delete']) { |
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| 284 | $this->delete($name); |
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| 285 | } |
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| 286 | 3 | return $default instanceof Closure ? $default() : $default; |
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| 287 | } |
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| 288 | |||
| 289 | /** |
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| 290 | * 返回句柄对象，可执行其它高级方法 |
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| 291 | * |
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| 292 | * @access public |
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| 293 | * @return object |
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| 294 | */ |
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| 295 | public function handler() |
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| 296 | { |
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| 297 | return $this->handler; |
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| 298 | } |
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| 299 | |||
| 300 | /** |
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| 301 | * 返回缓存读取次数 |
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| 302 | * @return int |
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| 303 | * @deprecated |
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| 304 | * @access public |
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| 305 | */ |
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| 306 | public function getReadTimes(): int |
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| 307 | { |
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| 308 | return $this->readTimes; |
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| 309 | } |
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| 310 | |||
| 311 | /** |
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| 312 | * 返回缓存写入次数 |
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| 313 | * @return int |
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| 314 | * @deprecated |
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| 315 | * @access public |
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| 316 | */ |
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| 317 | 3 | public function getWriteTimes(): int |
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| 318 | { |
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| 319 | 3 | return $this->writeTimes; |
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| 320 | } |
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| 321 | |||
| 322 | /** |
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| 323 | * 读取缓存 |
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| 324 | * @access public |
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| 325 | * @param iterable $keys 缓存变量名 |
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| 326 | * @param mixed $default 默认值 |
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| 327 | * @return iterable |
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| 328 | * @throws InvalidArgumentException |
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| 329 | */ |
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| 330 | 3 | public function getMultiple($keys, $default = null): iterable |
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| 331 | { |
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| 332 | 3 | $result = []; |
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| 333 | |||
| 334 | 3 | foreach ($keys as $key) { |
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| 335 | 3 | $result[$key] = $this->get($key, $default); |
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| 336 | } |
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| 337 | |||
| 338 | 3 | return $result; |
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| 339 | } |
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| 340 | |||
| 341 | /** |
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| 342 | * 写入缓存 |
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| 343 | * @access public |
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| 344 | * @param iterable $values 缓存数据 |
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| 345 | * @param null|int|\DateInterval|DateTimeInterface $ttl 有效时间 0为永久 |
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| 346 | * @return bool |
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| 347 | */ |
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| 348 | 3 | public function setMultiple($values, $ttl = null): bool |
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| 359 | } |
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| 360 | |||
| 361 | /** |
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| 362 | * 删除缓存 |
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| 363 | * @access public |
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| 364 | * @param iterable $keys 缓存变量名 |
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| 365 | * @return bool |
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| 366 | * @throws InvalidArgumentException |
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| 367 | */ |
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| 368 | 3 | public function deleteMultiple($keys): bool |
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| 369 | { |
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| 370 | 3 | foreach ($keys as $key) { |
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| 371 | 3 | $result = $this->delete($key); |
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| 372 | |||
| 373 | 3 | if (false === $result) { |
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| 374 | return false; |
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| 375 | } |
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| 376 | } |
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| 377 | |||
| 378 | 3 | return true; |
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| 379 | } |
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| 380 | |||
| 381 | public function __call($method, $args) |
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| 384 | } |
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| 385 | } |
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| 386 |
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