Cache::has() - Code Metrics - kokororin/Kotori.php - Measure and Improve Code Quality continuously with Scrutinizer

Cache::has() A
last analyzed 2018-05-04 03:56 UTC

↳ Parent: Cache

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	2
c	0
b	0
f	0
nc	1
nop	1
dl	0
loc	4
ccs	2
cts	2
cp	1
crap	1
rs	10

<?php
/**
 * Kotori.php
 *
 * A Tiny Model-View-Controller PHP Framework
 *
 * This content is released under the Apache 2 License
 *
 * Copyright (c) 2015-2017 Kotori Technology. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Caching Class
 *
 * @package     Kotori
 * @subpackage  Core
 * @author      Kokororin
 * @link        https://kotori.love
 */
namespace Kotori\Core;

use Kotori\Core\Container;
use Kotori\Debug\Hook;
use Psr\SimpleCache\CacheInterface;

class Cache implements CacheInterface
{
    /**
     * Valid cache drivers
     *
     * @var array
     */
    protected $validDrivers = [
        'dummy',
        'memcached',
        'redis',
    ];

    /**
     * Reference to the driver
     *
     * @var mixed
     */
    protected $adapter = 'dummy';

    /**
     * Cache key prefix
     *
     * @var string
     */
    public $keyPrefix = '';

    /**
     * Constructor
     *
     * Initialize class properties based on the configuration array.
     */
    public function __construct()
    {
        $config = Container::get('config')->get('cache');
        if (isset($config['adapter'])) {
            $this->adapter = $config['adapter'];
        }

        if (isset($config['prefix'])) {
            $this->keyPrefix = $config['prefix'];
        }

        $className = '\\Kotori\\Core\\Cache\\' . ucfirst($this->adapter);
        $this->{$this->adapter} = new $className();

        if (!$this->isSupported($this->adapter)) {
            Container::get('logger')->error('Cache adapter "{adapter}" is unavailable. Cache is now using "Dummy" adapter.', ['adapter' => $this->adapter]);
            $this->adapter = 'dummy';
        }

        Hook::listen(__CLASS__);
    }

    /**
     * Fetches a value from the cache.
     *
     * @param  string $key
     * @param  mixed  $default
     * @return mixed
     */
    public function get($key, $default = null)
    {
        $value = $this->{$this->adapter}->get($this->keyPrefix . $key);
        return $value ? $value : $default;
    }

    /**
     * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
     *
     * @param  string   $key
     * @param  mixed    $value
     * @param  int      $ttl
     * @return boolean
     */
    public function set($key, $value, $ttl = null)
    {
        return $this->{$this->adapter}->set($this->keyPrefix . $key, $value, $ttl);
    }

    /**
     * Delete an item from the cache by its unique key.
     *
     * @param  string  $key
     * @return boolean
     */
    public function delete($key)
    {
        return $this->{$this->adapter}->delete($this->keyPrefix . $key);
    }

    /**
     * Wipes clean the entire cache's keys.
     *
     * @return boolean
     */
    public function clear()
    {
        return $this->{$this->adapter}->clear();
    }

    /**
     * Obtains multiple cache items by their unique keys.
     *
     * @param  iterable $keys
     * @param  mixed    $default
     * @return iterable
     */
    public function getMultiple($keys, $default = null)
    {
        $values = [];
        foreach ($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());
}
    }

    /**
     * Persists a set of key => value pairs in the cache, with an optional TTL.
     *
     * @param  iterable $values
     * @param  int      $ttl
     * @return boolean
     */
    public function setMultiple($values, $ttl = null)
    {
        $failTimes = 0;
        foreach ($values as $key => $value) {
            if (!$this->set($key, $value, $ttl)) {
                $failTimes++;
            }
        }

        return $failTimes == 0;
    }

    /**
     * Deletes multiple cache items in a single operation.
     *
     * @param  iterable $keys
     * @return boolean
     */
    public function deleteMultiple($keys)
    {
        $failTimes = 0;
        foreach ($keys as $key) {
            if (!$this->delete($key)) {
                $failTimes++;
            }
        }

        return $failTimes == 0;
    }

    /**
     * Determines whether an item is present in the cache.
     *
     * @param  string $key
     * @return boolean
     */
    public function has($key)
    {
        return (bool) $this->get($key);
    }

    /**
     * Is the requested driver supported in this environment?
     *
     * @param  string $driver
     * @return array
     */
    public function isSupported($driver)
    {
        static $support;

        if (!isset($support, $support[$driver])) {
            $support[$driver] = $this->{$driver}->isSupported();
        }

        return $support[$driver];
    }
}


1		<?php
2		/**
3		* Kotori.php
4		*
5		* A Tiny Model-View-Controller PHP Framework
6		*
7		* This content is released under the Apache 2 License
8		*
9		* Copyright (c) 2015-2017 Kotori Technology. All rights reserved.
10		*
11		* Licensed under the Apache License, Version 2.0 (the "License");
12		* you may not use this file except in compliance with the License.
13		* You may obtain a copy of the License at
14		*
15		* http://www.apache.org/licenses/LICENSE-2.0
16		*
17		* Unless required by applicable law or agreed to in writing, software
18		* distributed under the License is distributed on an "AS IS" BASIS,
19		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20		* See the License for the specific language governing permissions and
21		* limitations under the License.
22		*/
23
24		/**
25		* Caching Class
26		*
27		* @package Kotori
28		* @subpackage Core
29		* @author Kokororin
30		* @link https://kotori.love
31		*/
32		namespace Kotori\Core;
33
34		use Kotori\Core\Container;
35		use Kotori\Debug\Hook;
36		use Psr\SimpleCache\CacheInterface;
37
38		class Cache implements CacheInterface
39		{
40		/**
41		* Valid cache drivers
42		*
43		* @var array
44		*/
45		protected $validDrivers = [
46		'dummy',
47		'memcached',
48		'redis',
49		];
50
51		/**
52		* Reference to the driver
53		*
54		* @var mixed
55		*/
56		protected $adapter = 'dummy';
57
58		/**
59		* Cache key prefix
60		*
61		* @var string
62		*/
63		public $keyPrefix = '';
64
65		/**
66		* Constructor
67		*
68		* Initialize class properties based on the configuration array.
69		*/
70	1	public function __construct()
71		{
72	1	$config = Container::get('config')->get('cache');
73	1	if (isset($config['adapter'])) {
74	1	$this->adapter = $config['adapter'];
75		}
76
77	1	if (isset($config['prefix'])) {
78	1	$this->keyPrefix = $config['prefix'];
79		}
80
81	1	$className = '\\Kotori\\Core\\Cache\\' . ucfirst($this->adapter);
82	1	$this->{$this->adapter} = new $className();
83
84	1	if (!$this->isSupported($this->adapter)) {
85		Container::get('logger')->error('Cache adapter "{adapter}" is unavailable. Cache is now using "Dummy" adapter.', ['adapter' => $this->adapter]);
86		$this->adapter = 'dummy';
87		}
88
89	1	Hook::listen(__CLASS__);
90	1	}
91
92		/**
93		* Fetches a value from the cache.
94		*
95		* @param string $key
96		* @param mixed $default
97		* @return mixed
98		*/
99	6	public function get($key, $default = null)
100		{
101	6	$value = $this->{$this->adapter}->get($this->keyPrefix . $key);
102	6	return $value ? $value : $default;
103		}
104
105		/**
106		* Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
107		*
108		* @param string $key
109		* @param mixed $value
110		* @param int $ttl
111		* @return boolean
112		*/
113	6	public function set($key, $value, $ttl = null)
114		{
115	6	return $this->{$this->adapter}->set($this->keyPrefix . $key, $value, $ttl);
116		}
117
118		/**
119		* Delete an item from the cache by its unique key.
120		*
121		* @param string $key
122		* @return boolean
123		*/
124	3	public function delete($key)
125		{
126	3	return $this->{$this->adapter}->delete($this->keyPrefix . $key);
127		}
128
129		/**
130		* Wipes clean the entire cache's keys.
131		*
132		* @return boolean
133		*/
134	1	public function clear()
135		{
136	1	return $this->{$this->adapter}->clear();
137		}
138
139		/**
140		* Obtains multiple cache items by their unique keys.
141		*
142		* @param iterable $keys
143		* @param mixed $default
144		* @return iterable
145		*/
146	2	public function getMultiple($keys, $default = null)
147		{
148	2	$values = [];
149	2	foreach ($keys as $key) {
150	2	$values[$key] = $this->get($key, $default);
151		}
152
153	2	return $values;
		0 ignored issues – show Bug Best Practice introduced 2017-11-06 07:22 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...
154		}
155
156		/**
157		* Persists a set of key => value pairs in the cache, with an optional TTL.
158		*
159		* @param iterable $values
160		* @param int $ttl
161		* @return boolean
162		*/
163	2	public function setMultiple($values, $ttl = null)
164		{
165	2	$failTimes = 0;
166	2	foreach ($values as $key => $value) {
167	2	if (!$this->set($key, $value, $ttl)) {
168	2	$failTimes++;
169		}
170		}
171
172	2	return $failTimes == 0;
173		}
174
175		/**
176		* Deletes multiple cache items in a single operation.
177		*
178		* @param iterable $keys
179		* @return boolean
180		*/
181	1	public function deleteMultiple($keys)
182		{
183	1	$failTimes = 0;
184	1	foreach ($keys as $key) {
185	1	if (!$this->delete($key)) {
186	1	$failTimes++;
187		}
188		}
189
190	1	return $failTimes == 0;
191		}
192
193		/**
194		* Determines whether an item is present in the cache.
195		*
196		* @param string $key
197		* @return boolean
198		*/
199	1	public function has($key)
200		{
201	1	return (bool) $this->get($key);
202		}
203
204		/**
205		* Is the requested driver supported in this environment?
206		*
207		* @param string $driver
208		* @return array
209		*/
210	1	public function isSupported($driver)
211		{
212	1	static $support;
213
214	1	if (!isset($support, $support[$driver])) {
215	1	$support[$driver] = $this->{$driver}->isSupported();
216		}
217
218	1	return $support[$driver];
219		}
220		}
221

kokororin / Kotori.php

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Cache::has() A last analyzed 2018-05-04 03:56 UTC

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Cache::has() A
last analyzed 2018-05-04 03:56 UTC