Driver::unserialize() - Code Metrics - Inspection of "改进缓存驱动" - top-think/framework - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — 5.1 ( 4f3592...135eee )

by liu

created 2019-04-28 08:57 UTC

Driver::unserialize() A

↳ Parent: Driver

Complexity

Conditions	3
Paths	2

Size

Total Lines	8
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	5
nc	2
nop	1
dl	0
loc	8
rs	10
c	0
b	0
f	0

<?php
// +----------------------------------------------------------------------

// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <[email protected]>
// +----------------------------------------------------------------------

namespace think\cache;

use think\Container;

/**
 * 缓存基础类
 */

abstract class Driver
{
    /**
     * 驱动句柄
     * @var object
     */
    protected $handler = null;

    /**
     * 缓存读取次数
     * @var integer
     */
    protected $readTimes = 0;

    /**
     * 缓存写入次数
     * @var integer
     */
    protected $writeTimes = 0;

    /**
     * 缓存参数
     * @var array
     */
    protected $options = [];

    /**
     * 缓存标签
     * @var string
     */
    protected $tag;

    /**
     * 序列化方法
     * @var array
     */
    protected static $serialize = ['serialize', 'unserialize', 'think_serialize:', 16];

    /**
     * 判断缓存是否存在
     * @access public
     * @param  string $name 缓存变量名
     * @return bool
     */
    abstract public function has($name);

    /**
     * 读取缓存
     * @access public
     * @param  string $name 缓存变量名

     * @param  mixed  $default 默认值
     * @return mixed
     */
    abstract public function get($name, $default = false);

    /**
     * 写入缓存
     * @access public
     * @param  string    $name 缓存变量名

     * @param  mixed     $value  存储数据
     * @param  int       $expire  有效时间 0为永久

     * @return boolean
     */
    abstract public function set($name, $value, $expire = null);

    /**
     * 自增缓存（针对数值缓存）
     * @access public
     * @param  string    $name 缓存变量名
     * @param  int       $step 步长
     * @return false|int
     */
    abstract public function inc($name, $step = 1);

    /**
     * 自减缓存（针对数值缓存）
     * @access public
     * @param  string    $name 缓存变量名
     * @param  int       $step 步长
     * @return false|int
     */
    abstract public function dec($name, $step = 1);

    /**
     * 删除缓存
     * @access public
     * @param  string $name 缓存变量名
     * @return boolean
     */
    abstract public function rm($name);

    /**
     * 清除缓存
     * @access public
     * @param  string $tag 标签名
     * @return boolean
     */
    abstract public function clear($tag = null);

    /**
     * 获取有效期
     * @access protected
     * @param  integer|\DateTime $expire 有效期
     * @return integer
     */
    protected function getExpireTime($expire)
    {
        if ($expire instanceof \DateTime) {
            $expire = $expire->getTimestamp() - time();
        }

        return $expire;
    }

    /**
     * 获取实际的缓存标识
     * @access protected
     * @param  string $name 缓存名
     * @return string
     */
    protected function getCacheKey($name)
    {
        return $this->options['prefix'] . $name;
    }

    /**
     * 读取缓存并删除
     * @access public
     * @param  string $name 缓存变量名
     * @return mixed
     */
    public function pull($name)
    {
        $result = $this->get($name, false);

        if ($result) {
            $this->rm($name);
            return $result;
        } else {
            return;
        }
    }

    /**
     * 如果不存在则写入缓存
     * @access public
     * @param  string    $name 缓存变量名

     * @param  mixed     $value  存储数据
     * @param  int       $expire  有效时间 0为永久

     * @return mixed
     */
    public function remember($name, $value, $expire = null)
    {
        if (!$this->has($name)) {
            $time = time();
            while ($time + 5 > time() && $this->has($name . '_lock')) {
                // 存在锁定则等待
                usleep(200000);
            }

            try {
                // 锁定
                $this->set($name . '_lock', true);

                if ($value instanceof \Closure) {
                    // 获取缓存数据
                    $value = Container::getInstance()->invokeFunction($value);
                }

                // 缓存数据
                $this->set($name, $value, $expire);

                // 解锁
                $this->rm($name . '_lock');
            } catch (\Exception $e) {
                $this->rm($name . '_lock');
                throw $e;
            } catch (\throwable $e) {
                $this->rm($name . '_lock');
                throw $e;
            }
        } else {
            $value = $this->get($name);
        }

        return $value;
    }

    /**
     * 缓存标签
     * @access public
     * @param  string        $name 标签名

     * @param  string|array  $keys 缓存标识

     * @param  bool          $overlay 是否覆盖
     * @return $this
     */
    public function tag($name, $keys = null, $overlay = false)
    {
        if (is_null($name)) {


        } elseif (is_null($keys)) {
            $this->tag = $name;
        } else {
            $key = $this->getTagkey($name);

            if (is_string($keys)) {
                $keys = explode(',', $keys);
            }

            $keys = array_map([$this, 'getCacheKey'], $keys);

            if ($overlay) {
                $value = $keys;
            } else {
                $value = array_unique(array_merge($this->getTagItem($name), $keys));
            }

            $this->set($key, implode(',', $value), 0);
        }

        return $this;
    }

    /**
     * 更新标签
     * @access protected
     * @param  string $name 缓存标识
     * @return void
     */
    protected function setTagItem($name)
    {
        if ($this->tag) {
            $key       = $this->getTagkey($this->tag);
            $prev      = $this->tag;
            $this->tag = null;

            if ($this->has($key)) {
                $value   = explode(',', $this->get($key));
                $value[] = $name;

                if (count($value) > 1000) {
                    array_shift($value);
                }

                $value = implode(',', array_unique($value));
            } else {
                $value = $name;
            }

            $this->set($key, $value, 0);
            $this->tag = $prev;
        }
    }

    /**
     * 获取标签包含的缓存标识
     * @access protected
     * @param  string $tag 缓存标签
     * @return array
     */
    protected function getTagItem($tag)
    {
        $key   = $this->getTagkey($tag);
        $value = $this->get($key);

        if ($value) {
            return array_filter(explode(',', $value));
        } else {
            return [];
        }
    }

    protected function getTagKey($tag)

    {
        return 'tag_' . md5($tag);
    }

    /**
     * 序列化数据
     * @access protected
     * @param  mixed $data

     * @return string
     */
    protected function serialize($data)
    {
        if (is_scalar($data) || !$this->options['serialize']) {
            return $data;
        }

        $serialize = self::$serialize[0];

        return self::$serialize[2] . $serialize($data);
    }

    /**
     * 反序列化数据
     * @access protected
     * @param  string $data

     * @return mixed
     */
    protected function unserialize($data)
    {
        if ($this->options['serialize'] && 0 === strpos($data, self::$serialize[2])) {
            $unserialize = self::$serialize[1];

            return $unserialize(substr($data, self::$serialize[3]));
        } else {
            return $data;
        }
    }

    /**
     * 注册序列化机制
     * @access public
     * @param  callable $serialize      序列化方法

     * @param  callable $unserialize    反序列化方法

     * @param  string   $prefix         序列化前缀标识

     * @return $this
     */
    public static function registerSerialize($serialize, $unserialize, $prefix = 'think_serialize:')
    {
        self::$serialize = [$serialize, $unserialize, $prefix, strlen($prefix)];
    }

    /**
     * 返回句柄对象，可执行其它高级方法
     *
     * @access public
     * @return object
     */
    public function handler()
    {
        return $this->handler;
    }

    public function getReadTimes()

    {
        return $this->readTimes;
    }

    public function getWriteTimes()

    {
        return $this->writeTimes;
    }

    public function __call($method, $args)

    {
        return call_user_func_array([$this->handler, $method], $args);
    }
}


1			<?php
2			// +----------------------------------------------------------------------
			1 ignored issue – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report You must use "/**" style comments for a file comment Loading history...
3			// \| ThinkPHP [ WE CAN DO IT JUST THINK ]
4			// +----------------------------------------------------------------------
5			// \| Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
6			// +----------------------------------------------------------------------
7			// \| Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
8			// +----------------------------------------------------------------------
9			// \| Author: liu21st <[email protected]>
10			// +----------------------------------------------------------------------
11
12			namespace think\cache;
13
14			use think\Container;
15
16			/**
17			* 缓存基础类
18			*/
			5 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Missing @category tag in class comment Loading history... Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Missing @package tag in class comment Loading history... Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Missing @author tag in class comment Loading history... Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Missing @license tag in class comment Loading history... Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Missing @link tag in class comment Loading history...
19			abstract class Driver
20			{
21			/**
22			* 驱动句柄
23			* @var object
24			*/
25			protected $handler = null;
26
27			/**
28			* 缓存读取次数
29			* @var integer
30			*/
31			protected $readTimes = 0;
32
33			/**
34			* 缓存写入次数
35			* @var integer
36			*/
37			protected $writeTimes = 0;
38
39			/**
40			* 缓存参数
41			* @var array
42			*/
43			protected $options = [];
44
45			/**
46			* 缓存标签
47			* @var string
48			*/
49			protected $tag;
50
51			/**
52			* 序列化方法
53			* @var array
54			*/
55			protected static $serialize = ['serialize', 'unserialize', 'think_serialize:', 16];
56
57			/**
58			* 判断缓存是否存在
59			* @access public
60			* @param string $name 缓存变量名
61			* @return bool
62			*/
63			abstract public function has($name);
64
65			/**
66			* 读取缓存
67			* @access public
68			* @param string $name 缓存变量名
			0 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Expected 4 spaces after parameter name; 1 found Loading history...
69			* @param mixed $default 默认值
70			* @return mixed
71			*/
72			abstract public function get($name, $default = false);
73
74			/**
75			* 写入缓存
76			* @access public
77			* @param string $name 缓存变量名
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Expected 3 spaces after parameter name; 1 found Loading history...
78			* @param mixed $value 存储数据
79			* @param int $expire 有效时间 0为永久
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Expected 1 spaces after parameter name; 2 found Loading history...
80			* @return boolean
81			*/
82			abstract public function set($name, $value, $expire = null);
83
84			/**
85			* 自增缓存（针对数值缓存）
86			* @access public
87			* @param string $name 缓存变量名
88			* @param int $step 步长
89			* @return false\|int
90			*/
91			abstract public function inc($name, $step = 1);
92
93			/**
94			* 自减缓存（针对数值缓存）
95			* @access public
96			* @param string $name 缓存变量名
97			* @param int $step 步长
98			* @return false\|int
99			*/
100			abstract public function dec($name, $step = 1);
101
102			/**
103			* 删除缓存
104			* @access public
105			* @param string $name 缓存变量名
106			* @return boolean
107			*/
108			abstract public function rm($name);
109
110			/**
111			* 清除缓存
112			* @access public
113			* @param string $tag 标签名
114			* @return boolean
115			*/
116			abstract public function clear($tag = null);
117
118			/**
119			* 获取有效期
120			* @access protected
121			* @param integer\|\DateTime $expire 有效期
122			* @return integer
123			*/
124			protected function getExpireTime($expire)
125			{
126			if ($expire instanceof \DateTime) {
127			$expire = $expire->getTimestamp() - time();
128			}
129
130			return $expire;
131			}
132
133			/**
134			* 获取实际的缓存标识
135			* @access protected
136			* @param string $name 缓存名
137			* @return string
138			*/
139			protected function getCacheKey($name)
140			{
141			return $this->options['prefix'] . $name;
142			}
143
144			/**
145			* 读取缓存并删除
146			* @access public
147			* @param string $name 缓存变量名
148			* @return mixed
149			*/
150			public function pull($name)
151			{
152			$result = $this->get($name, false);
153
154			if ($result) {
155			$this->rm($name);
156			return $result;
157			} else {
158			return;
159			}
160			}
161
162			/**
163			* 如果不存在则写入缓存
164			* @access public
165			* @param string $name 缓存变量名
			0 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Expected 3 spaces after parameter name; 1 found Loading history...
166			* @param mixed $value 存储数据
167			* @param int $expire 有效时间 0为永久
			0 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Expected 1 spaces after parameter name; 2 found Loading history...
168			* @return mixed
169			*/
170			public function remember($name, $value, $expire = null)
171			{
172			if (!$this->has($name)) {
173			$time = time();
174			while ($time + 5 > time() && $this->has($name . '_lock')) {
175			// 存在锁定则等待
176			usleep(200000);
177			}
178
179			try {
180			// 锁定
181			$this->set($name . '_lock', true);
182
183			if ($value instanceof \Closure) {
184			// 获取缓存数据
185			$value = Container::getInstance()->invokeFunction($value);
186			}
187
188			// 缓存数据
189			$this->set($name, $value, $expire);
190
191			// 解锁
192			$this->rm($name . '_lock');
193			} catch (\Exception $e) {
194			$this->rm($name . '_lock');
195			throw $e;
196			} catch (\throwable $e) {
197			$this->rm($name . '_lock');
198			throw $e;
199			}
200			} else {
201			$value = $this->get($name);
202			}
203
204			return $value;
205			}
206
207			/**
208			* 缓存标签
209			* @access public
210			* @param string $name 标签名
			0 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Expected 4 spaces after parameter name; 1 found Loading history...
211			* @param string\|array $keys 缓存标识
			0 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Expected 4 spaces after parameter name; 1 found Loading history...
212			* @param bool $overlay 是否覆盖
213			* @return $this
214			*/
215			public function tag($name, $keys = null, $overlay = false)
216			{
217			if (is_null($name)) {
			0 ignored issues – show introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report The condition `is_null($name)` is always `false`. Loading history...
218
219			} elseif (is_null($keys)) {
220			$this->tag = $name;
221			} else {
222			$key = $this->getTagkey($name);
223
224			if (is_string($keys)) {
225			$keys = explode(',', $keys);
226			}
227
228			$keys = array_map([$this, 'getCacheKey'], $keys);
229
230			if ($overlay) {
231			$value = $keys;
232			} else {
233			$value = array_unique(array_merge($this->getTagItem($name), $keys));
234			}
235
236			$this->set($key, implode(',', $value), 0);
237			}
238
239			return $this;
240			}
241
242			/**
243			* 更新标签
244			* @access protected
245			* @param string $name 缓存标识
246			* @return void
247			*/
248			protected function setTagItem($name)
249			{
250			if ($this->tag) {
251			$key = $this->getTagkey($this->tag);
252			$prev = $this->tag;
253			$this->tag = null;
254
255			if ($this->has($key)) {
256			$value = explode(',', $this->get($key));
257			$value[] = $name;
258
259			if (count($value) > 1000) {
260			array_shift($value);
261			}
262
263			$value = implode(',', array_unique($value));
264			} else {
265			$value = $name;
266			}
267
268			$this->set($key, $value, 0);
269			$this->tag = $prev;
270			}
271			}
272
273			/**
274			* 获取标签包含的缓存标识
275			* @access protected
276			* @param string $tag 缓存标签
277			* @return array
278			*/
279			protected function getTagItem($tag)
280			{
281			$key = $this->getTagkey($tag);
282			$value = $this->get($key);
283
284			if ($value) {
285			return array_filter(explode(',', $value));
286			} else {
287			return [];
288			}
289			}
290
291			protected function getTagKey($tag)
			0 ignored issues – show Coding Style introduced 2019-04-05 02:29 UTC by Report Bug Copy Issue Report Missing function doc comment Loading history...
292			{
293			return 'tag_' . md5($tag);
294			}
295
296			/**
297			* 序列化数据
298			* @access protected
299			* @param mixed $data
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Missing parameter comment Loading history...
300			* @return string
301			*/
302			protected function serialize($data)
303			{
304			if (is_scalar($data) \|\| !$this->options['serialize']) {
305			return $data;
306			}
307
308			$serialize = self::$serialize[0];
309
310			return self::$serialize[2] . $serialize($data);
311			}
312
313			/**
314			* 反序列化数据
315			* @access protected
316			* @param string $data
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Missing parameter comment Loading history...
317			* @return mixed
318			*/
319			protected function unserialize($data)
320			{
321			if ($this->options['serialize'] && 0 === strpos($data, self::$serialize[2])) {
322			$unserialize = self::$serialize[1];
323
324			return $unserialize(substr($data, self::$serialize[3]));
325			} else {
326			return $data;
327			}
328			}
329
330			/**
331			* 注册序列化机制
332			* @access public
333			* @param callable $serialize 序列化方法
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Expected 3 spaces after parameter name; 6 found Loading history...
334			* @param callable $unserialize 反序列化方法
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Expected 1 spaces after parameter name; 4 found Loading history...
335			* @param string $prefix 序列化前缀标识
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Expected 6 spaces after parameter name; 9 found Loading history...
336			* @return $this
337			*/
338			public static function registerSerialize($serialize, $unserialize, $prefix = 'think_serialize:')
339			{
340			self::$serialize = [$serialize, $unserialize, $prefix, strlen($prefix)];
341			}
342
343			/**
344			* 返回句柄对象，可执行其它高级方法
345			*
346			* @access public
347			* @return object
348			*/
349			public function handler()
350			{
351			return $this->handler;
352			}
353
354			public function getReadTimes()
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Missing function doc comment Loading history...
355			{
356			return $this->readTimes;
357			}
358
359			public function getWriteTimes()
			0 ignored issues – show Coding Style introduced 2019-02-27 06:16 UTC by Report Bug Copy Issue Report Missing function doc comment Loading history...
360			{
361			return $this->writeTimes;
362			}
363
364			public function __call($method, $args)
			0 ignored issues – show Coding Style introduced 2019-04-28 09:04 UTC by Report Bug Copy Issue Report Missing function doc comment Loading history...
365			{
366			return call_user_func_array([$this->handler, $method], $args);
367			}
368			}
369

top-think / framework

Push — 5.1 ( 4f3592...135eee )

Driver::unserialize() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like