FileCache::clear() - Code Metrics - Inspection of "Add method isTraversable" - Compolomus/FileCache - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — php-5.6 (e849f3)

by compolom

created 2018-04-11 21:42 UTC

FileCache::clear() B

↳ Parent: FileCache

Complexity

Conditions	5
Paths	10

Size

Total Lines	11
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	11
rs	8.8571
c	0
b	0
f	0
cc	5
eloc	7
nc	10
nop	0

<?php

namespace Compolomus\Cache;

use DateInterval;
use DateTime;
use FilesystemIterator;
use LogicException;
use Psr\SimpleCache\CacheInterface;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;
use RuntimeException;
use SplFileObject;
use Traversable;

class FileCache implements CacheInterface
{

    private $cachePath;

    /**
     * FileCache constructor.
     * @param null|string $cachePath
     */
    public function __construct($cachePath = null)
    {
        $this->cachePath = null !== $cachePath ? $cachePath : sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'cache';
        is_dir($this->cachePath) ?: mkdir($this->cachePath, 0775, true);
    }

    /**
     * Clear cache directory
     *
     * @return bool
     */
    public function clear()
    {
        $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->cachePath,
            FilesystemIterator::SKIP_DOTS), RecursiveIteratorIterator::CHILD_FIRST);
        $iterator = iterator_count($iterator) ? $iterator : [];
        foreach ($iterator as $item) {
            $item->isDir() && !$item->isLink() ? rmdir($item->getPathname()) : unlink($item->getPathname());
        }

        return rmdir($this->cachePath);
    }

    /**
     * @param iterable $keys
     * @param mixed $default
     * @return array
     * @throws LogicException
     * @throws RuntimeException
     * @throws InvalidArgumentException
     */
    public function getMultiple($keys, $default = null)
    {
        $this->isTraversable($keys);
        $values = [];
        foreach ($keys as $key) {
            $values[$key] = $this->get($key) ?: $default;
        }

        return $values;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * @param string $key
     * @param null $default
     * @return mixed
     * @throws LogicException
     * @throws RuntimeException
     * @throws InvalidArgumentException
     */
    public function get($key, $default = null)
    {
        $keyFile = $this->getFilename($key);
        $file = file_exists($keyFile) && $this->has($key) ? realpath($keyFile) : null;

        return $file ? unserialize((new SplFileObject($file))->fread(filesize($file)),
            ['allowed_classes' => false]) : $default;
    }

    /**
     * @param string $key
     * @return string
     * @throws InvalidArgumentException
     */
    private function getFilename($key)
    {
        $this->validateKey($key);
        $sha1 = sha1($key);

        return $this->cachePath . DIRECTORY_SEPARATOR
            . substr($sha1, 0, 2) . DIRECTORY_SEPARATOR
            . substr($sha1, 2, 2) . DIRECTORY_SEPARATOR
            . $sha1 . '.cache';
    }

    /**
     * @param $key
     * @return bool
     * @throws InvalidArgumentException
     */
    private function validateKey($key)
    {
        if (preg_match('#[{}()/\\\@:]#', $key)) {
            throw new InvalidArgumentException('Can\'t validate the specified key');
        }

        return true;
    }

    /**
     * Isset and life item
     *
     * @param string $key
     * @return bool
     * @throws InvalidArgumentException
     */
    public function has($key)
    {
        $filename = $this->getFilename($key);
        if (!file_exists($filename)) {
            return false;
        }
        if ($this->isLife(filemtime($filename))) {
            $this->delete($key);
            return false;
        }

        return true;
    }

    /**
     * @param $ttl int
     * @return bool
     */
    private function isLife($ttl)
    {
        return $ttl < time();
    }

    /**
     * @param string $key
     * @return bool
     * @throws InvalidArgumentException
     */
    public function delete($key)
    {
        return unlink($this->getFilename($key));
    }

    /**
     * @param array $keys
     * @param int $ttl
     * @throws InvalidArgumentException
     * @throws LogicException
     * @throws RuntimeException
     * @return bool
     */
    public function setMultiple($keys, $ttl = null)
    {
        $this->isTraversable($keys);
        $status = [];
        foreach ($keys as $key => $value) {
            $status[$key] = $this->set($key, $value, $ttl);
        }

        return \in_array(true, $status, true) ? false : true;
    }

    /**
     * @param string $key
     * @param mixed $value
     * @param null|int|\DateInterval $ttl
     * @throws InvalidArgumentException
     * @throws LogicException
     * @throws RuntimeException
     * @return bool
     */
    public function set($key, $value, $ttl = null)
    {
        $file = $this->getFilename($key);
        $dir = \dirname($file);
        is_dir($dir) ?: mkdir($dir, 0775, true);

        switch ($ttl) {
            case \is_int($ttl):
                $ttl += time();
                break;
            case ($ttl instanceof DateInterval):
                $ttl = (new DateTime())->add($ttl)->getTimestamp();
                break;
            case (null === $ttl):
            default:
                $ttl = time() + 15;
        }

        $data = new SplFileObject($file, 'wb');
        $data->fwrite(serialize($value));
        return touch($file, $ttl);
    }

    /**
     * @param array $keys
     * @return bool
     * @throws InvalidArgumentException
     */
    public function deleteMultiple($keys)
    {
        $this->isTraversable($keys);
        $status = [];
        foreach ($keys as $key) {
            $status[] = $this->delete($key);
        }

        return \in_array(true, $status, true) ? false : true;
    }

    /**
     * @param $array
     * @throws InvalidArgumentException
     */
    private function isTraversable($array)
    {
        if (!is_array($array) && !$array instanceof Traversable) {
            throw new InvalidArgumentException('Array must be either of type array or Traversable');
        }
    }
}


1			<?php
2
3			namespace Compolomus\Cache;
4
5			use DateInterval;
6			use DateTime;
7			use FilesystemIterator;
8			use LogicException;
9			use Psr\SimpleCache\CacheInterface;
10			use RecursiveDirectoryIterator;
11			use RecursiveIteratorIterator;
12			use RuntimeException;
13			use SplFileObject;
14			use Traversable;
15
16			class FileCache implements CacheInterface
17			{
18
19			private $cachePath;
20
21			/**
22			* FileCache constructor.
23			* @param null\|string $cachePath
24			*/
25			public function __construct($cachePath = null)
26			{
27			$this->cachePath = null !== $cachePath ? $cachePath : sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'cache';
28			is_dir($this->cachePath) ?: mkdir($this->cachePath, 0775, true);
29			}
30
31			/**
32			* Clear cache directory
33			*
34			* @return bool
35			*/
36			public function clear()
37			{
38			$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->cachePath,
39			FilesystemIterator::SKIP_DOTS), RecursiveIteratorIterator::CHILD_FIRST);
40			$iterator = iterator_count($iterator) ? $iterator : [];
41			foreach ($iterator as $item) {
42			$item->isDir() && !$item->isLink() ? rmdir($item->getPathname()) : unlink($item->getPathname());
43			}
44
45			return rmdir($this->cachePath);
46			}
47
48			/**
49			* @param iterable $keys
50			* @param mixed $default
51			* @return array
52			* @throws LogicException
53			* @throws RuntimeException
54			* @throws InvalidArgumentException
55			*/
56			public function getMultiple($keys, $default = null)
57			{
58			$this->isTraversable($keys);
59			$values = [];
60			foreach ($keys as $key) {
61			$values[$key] = $this->get($key) ?: $default;
62			}
63
64			return $values;
			0 ignored issues – show Bug Best Practice introduced 2018-04-11 21:00 UTC by Report Bug Copy Issue Report The return type of `return $values;` (`array`) is incompatible with the return type declared by the interface `Psr\SimpleCache\CacheInterface::getMultiple` of type `Psr\SimpleCache\iterable`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
65			}
66
67			/**
68			* @param string $key
69			* @param null $default
70			* @return mixed
71			* @throws LogicException
72			* @throws RuntimeException
73			* @throws InvalidArgumentException
74			*/
75			public function get($key, $default = null)
76			{
77			$keyFile = $this->getFilename($key);
78			$file = file_exists($keyFile) && $this->has($key) ? realpath($keyFile) : null;
79
80			return $file ? unserialize((new SplFileObject($file))->fread(filesize($file)),
81			['allowed_classes' => false]) : $default;
82			}
83
84			/**
85			* @param string $key
86			* @return string
87			* @throws InvalidArgumentException
88			*/
89			private function getFilename($key)
90			{
91			$this->validateKey($key);
92			$sha1 = sha1($key);
93
94			return $this->cachePath . DIRECTORY_SEPARATOR
95			. substr($sha1, 0, 2) . DIRECTORY_SEPARATOR
96			. substr($sha1, 2, 2) . DIRECTORY_SEPARATOR
97			. $sha1 . '.cache';
98			}
99
100			/**
101			* @param $key
102			* @return bool
103			* @throws InvalidArgumentException
104			*/
105			private function validateKey($key)
106			{
107			if (preg_match('#[{}()/\\\@:]#', $key)) {
108			throw new InvalidArgumentException('Can\'t validate the specified key');
109			}
110
111			return true;
112			}
113
114			/**
115			* Isset and life item
116			*
117			* @param string $key
118			* @return bool
119			* @throws InvalidArgumentException
120			*/
121			public function has($key)
122			{
123			$filename = $this->getFilename($key);
124			if (!file_exists($filename)) {
125			return false;
126			}
127			if ($this->isLife(filemtime($filename))) {
128			$this->delete($key);
129			return false;
130			}
131
132			return true;
133			}
134
135			/**
136			* @param $ttl int
137			* @return bool
138			*/
139			private function isLife($ttl)
140			{
141			return $ttl < time();
142			}
143
144			/**
145			* @param string $key
146			* @return bool
147			* @throws InvalidArgumentException
148			*/
149			public function delete($key)
150			{
151			return unlink($this->getFilename($key));
152			}
153
154			/**
155			* @param array $keys
156			* @param int $ttl
157			* @throws InvalidArgumentException
158			* @throws LogicException
159			* @throws RuntimeException
160			* @return bool
161			*/
162			public function setMultiple($keys, $ttl = null)
163			{
164			$this->isTraversable($keys);
165			$status = [];
166			foreach ($keys as $key => $value) {
167			$status[$key] = $this->set($key, $value, $ttl);
168			}
169
170			return \in_array(true, $status, true) ? false : true;
171			}
172
173			/**
174			* @param string $key
175			* @param mixed $value
176			* @param null\|int\|\DateInterval $ttl
177			* @throws InvalidArgumentException
178			* @throws LogicException
179			* @throws RuntimeException
180			* @return bool
181			*/
182			public function set($key, $value, $ttl = null)
183			{
184			$file = $this->getFilename($key);
185			$dir = \dirname($file);
186			is_dir($dir) ?: mkdir($dir, 0775, true);
187
188			switch ($ttl) {
189			case \is_int($ttl):
190			$ttl += time();
191			break;
192			case ($ttl instanceof DateInterval):
193			$ttl = (new DateTime())->add($ttl)->getTimestamp();
194			break;
195			case (null === $ttl):
196			default:
197			$ttl = time() + 15;
198			}
199
200			$data = new SplFileObject($file, 'wb');
201			$data->fwrite(serialize($value));
202			return touch($file, $ttl);
203			}
204
205			/**
206			* @param array $keys
207			* @return bool
208			* @throws InvalidArgumentException
209			*/
210			public function deleteMultiple($keys)
211			{
212			$this->isTraversable($keys);
213			$status = [];
214			foreach ($keys as $key) {
215			$status[] = $this->delete($key);
216			}
217
218			return \in_array(true, $status, true) ? false : true;
219			}
220
221			/**
222			* @param $array
223			* @throws InvalidArgumentException
224			*/
225			private function isTraversable($array)
226			{
227			if (!is_array($array) && !$array instanceof Traversable) {
228			throw new InvalidArgumentException('Array must be either of type array or Traversable');
229			}
230			}
231			}
232

Compolomus / FileCache

Branch — php-5.6 (e849f3)

FileCache::clear() B

Complexity

Size

Duplication

Importance

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