ApcuCache::__construct() - Code Metrics - paillechat/apcu-simple-cache - Measure and Improve Code Quality continuously with Scrutinizer

ApcuCache::__construct() A
last analyzed 2017-08-24 13:23 UTC

↳ Parent: ApcuCache

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	5
ccs	4
cts	4
cp	1
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	2
crap	1

<?php

namespace Paillechat\ApcuSimpleCache;

use Paillechat\ApcuSimpleCache\Exception\ApcuInvalidCacheKeyException;
use Psr\SimpleCache\CacheInterface;

class ApcuCache implements CacheInterface
{
    /**
     * @var string
     */
    private $namespace;
    /**
     * @var int
     */
    private $defaultLifetime;

    public function __construct($namespace = '', $defaultLifetime = 0)
    {
        $this->namespace = $namespace;
        $this->defaultLifetime = $defaultLifetime;
    }

    /**
     * {@inheritdoc}
     */
    public function get($key, $default = null)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        $value = apcu_fetch($key, $success);
        if ($success === false) {
            return $default;
        }

        return $value;
    }

    /**
     * {@inheritdoc}
     */
    public function set($key, $value, $ttl = null)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        $ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;

        return apcu_store($key, $value, (int) $ttl);

    }

    /**
     * {@inheritdoc}
     */
    public function delete($key)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        return apcu_delete($key);

    }

    /**
     * {@inheritdoc}
     */
    public function clear()
    {
        return apcu_clear_cache();
    }

    /**
     * {@inheritdoc}
     */
    public function getMultiple($keys, $default = null)
    {
        $this->assertKeyNames($keys);
        $keys = $this->buildKeyNames($keys);

        $result = apcu_fetch($keys);

        if (!is_null($default) && is_array($result) && count($keys) > count($result)) {
            $notFoundKeys = array_diff($keys, array_keys($result));
            $result = array_merge($result, array_fill_keys($notFoundKeys, $default));
        }

        $mappedResult = [];

        foreach ($result as $key => $value) {
            $key = preg_replace("/^$this->namespace/", '', $key);

            $mappedResult[$key] = $value;
        }

        return $mappedResult;
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());
}
    }

    /**
     * {@inheritdoc}
     */
    public function setMultiple($values, $ttl = null)
    {
        $this->assertKeyNames(array_keys($values));

        $mappedByNamespaceValues = [];

        foreach ($values as $key => $value) {
            $mappedByNamespaceValues[$this->buildKeyName($key)] = $value;
        }

        $ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;

        $result = apcu_store($mappedByNamespaceValues, (int) $ttl);

        return $result === true ? true : (is_array($result) && count($result) == 0 ? true: false);
    }

    /**
     * {@inheritdoc}
     */
    public function deleteMultiple($keys)
    {
        $this->assertKeyNames($keys);
        $keys = $this->buildKeyNames($keys);

        $result = apcu_delete($keys);

        return count($result) === count($keys) ? false : true;
    }

    /**
     * {@inheritdoc}
     */
    public function has($key)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        return (bool) apcu_exists($key);
    }

    /**
     * @param string $key
     *
     * @return string
     */
    private function buildKeyName($key)
    {
        return $this->namespace . $key;
    }

    /**
     * @param string[] $keys
     *
     * @return string[]
     */
    private function buildKeyNames(array $keys)
    {
        return array_map(function($key) {
            return $this->buildKeyName($key);
        }, $keys);

    }

    /**
     * @param mixed $key
     *
     * @throws ApcuInvalidCacheKeyException
     */
    private function assertKeyName($key)
    {
        if (!is_scalar($key) || is_bool($key)) {
            throw new ApcuInvalidCacheKeyException();
        }
    }

    /**
     * @param string[] $keys
     *
     * @throws ApcuInvalidCacheKeyException
     */
    private function assertKeyNames(array $keys)
    {
        array_map(function ($value) {
            $this->assertKeyName($value);
        }, $keys);
    }
}


1		<?php
2
3		namespace Paillechat\ApcuSimpleCache;
4
5		use Paillechat\ApcuSimpleCache\Exception\ApcuInvalidCacheKeyException;
6		use Psr\SimpleCache\CacheInterface;
7
8		class ApcuCache implements CacheInterface
9		{
10		/**
11		* @var string
12		*/
13		private $namespace;
14		/**
15		* @var int
16		*/
17		private $defaultLifetime;
18
19	22	public function __construct($namespace = '', $defaultLifetime = 0)
20		{
21	22	$this->namespace = $namespace;
22	22	$this->defaultLifetime = $defaultLifetime;
23	22	}
24
25		/**
26		* {@inheritdoc}
27		*/
28	18	public function get($key, $default = null)
29		{
30	18	$this->assertKeyName($key);
31	8	$key = $this->buildKeyName($key);
32
33	8	$value = apcu_fetch($key, $success);
34	8	if ($success === false) {
35	2	return $default;
36		}
37
38	8	return $value;
39		}
40
41		/**
42		* {@inheritdoc}
43		*/
44	8	public function set($key, $value, $ttl = null)
45		{
46	8	$this->assertKeyName($key);
47	8	$key = $this->buildKeyName($key);
48
49	8	$ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;
50
51	8	return apcu_store($key, $value, (int) $ttl);
		0 ignored issues – show Bug Compatibility introduced 2017-05-30 16:48 UTC by Report Bug Copy Issue Report The expression `apcu_store($key, $value, (int) $ttl);` of type `boolean\|array` adds the type `array` to the return on line 51 which is incompatible with the return type declared by the interface `Psr\SimpleCache\CacheInterface::set` of type `boolean`. Loading history...
52		}
53
54		/**
55		* {@inheritdoc}
56		*/
57	2	public function delete($key)
58		{
59	2	$this->assertKeyName($key);
60	2	$key = $this->buildKeyName($key);
61
62	2	return apcu_delete($key);
		0 ignored issues – show Bug Compatibility introduced 2017-05-30 16:48 UTC by Report Bug Copy Issue Report The expression `apcu_delete($key);` of type `boolean\|string[]` adds the type `string[]` to the return on line 62 which is incompatible with the return type declared by the interface `Psr\SimpleCache\CacheInterface::delete` of type `boolean`. Loading history...
63		}
64
65		/**
66		* {@inheritdoc}
67		*/
68	4	public function clear()
69		{
70	4	return apcu_clear_cache();
71		}
72
73		/**
74		* {@inheritdoc}
75		*/
76	2	public function getMultiple($keys, $default = null)
77		{
78	2	$this->assertKeyNames($keys);
79	2	$keys = $this->buildKeyNames($keys);
80
81	2	$result = apcu_fetch($keys);
82
83	2	if (!is_null($default) && is_array($result) && count($keys) > count($result)) {
84	2	$notFoundKeys = array_diff($keys, array_keys($result));
85	2	$result = array_merge($result, array_fill_keys($notFoundKeys, $default));
86	1	}
87
88	2	$mappedResult = [];
89
90	2	foreach ($result as $key => $value) {
91	2	$key = preg_replace("/^$this->namespace/", '', $key);
92
93	2	$mappedResult[$key] = $value;
94	1	}
95
96	2	return $mappedResult;
		0 ignored issues – show Bug Best Practice introduced 2017-05-31 09:46 UTC by Report Bug Copy Issue Report The return type of `return $mappedResult;` (`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...
97		}
98
99		/**
100		* {@inheritdoc}
101		*/
102	2	public function setMultiple($values, $ttl = null)
103		{
104	2	$this->assertKeyNames(array_keys($values));
105
106	2	$mappedByNamespaceValues = [];
107
108	2	foreach ($values as $key => $value) {
109	2	$mappedByNamespaceValues[$this->buildKeyName($key)] = $value;
110	1	}
111
112	2	$ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;
113
114	2	$result = apcu_store($mappedByNamespaceValues, (int) $ttl);
115
116	2	return $result === true ? true : (is_array($result) && count($result) == 0 ? true: false);
117		}
118
119		/**
120		* {@inheritdoc}
121		*/
122	2	public function deleteMultiple($keys)
123		{
124	2	$this->assertKeyNames($keys);
125	2	$keys = $this->buildKeyNames($keys);
126
127	2	$result = apcu_delete($keys);
128
129	2	return count($result) === count($keys) ? false : true;
130		}
131
132		/**
133		* {@inheritdoc}
134		*/
135	4	public function has($key)
136		{
137	4	$this->assertKeyName($key);
138	4	$key = $this->buildKeyName($key);
139
140	4	return (bool) apcu_exists($key);
141		}
142
143		/**
144		* @param string $key
145		*
146		* @return string
147		*/
148	10	private function buildKeyName($key)
149		{
150	10	return $this->namespace . $key;
151		}
152
153		/**
154		* @param string[] $keys
155		*
156		* @return string[]
157		*/
158	2	private function buildKeyNames(array $keys)
159		{
160		return array_map(function($key) {
161	2	return $this->buildKeyName($key);
162	2	}, $keys);
163
164		}
165
166		/**
167		* @param mixed $key
168		*
169		* @throws ApcuInvalidCacheKeyException
170		*/
171	20	private function assertKeyName($key)
172		{
173	20	if (!is_scalar($key) \|\| is_bool($key)) {
174	10	throw new ApcuInvalidCacheKeyException();
175		}
176	10	}
177
178		/**
179		* @param string[] $keys
180		*
181		* @throws ApcuInvalidCacheKeyException
182		*/
183		private function assertKeyNames(array $keys)
184		{
185	2	array_map(function ($value) {
186	2	$this->assertKeyName($value);
187	2	}, $keys);
188	2	}
189		}
190

paillechat / apcu-simple-cache

ApcuCache::__construct() A last analyzed 2017-08-24 13:23 UTC

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ApcuCache::__construct() A
last analyzed 2017-08-24 13:23 UTC