Cache::delete() - Code Metrics - Inspection of "RESOLVED #JJ228: Upgrade to webtrees 1.7.8 - Adapt..." - jon48/webtrees-lib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 604bee...544e34 )

by Jonathan

created 2016-10-01 22:38 UTC

Cache::delete() A

↳ Parent: Cache

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

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

<?php
/**
 * webtrees-lib: MyArtJaub library for webtrees
 *
 * @package MyArtJaub\Webtrees
 * @author Jonathan Jaubart <[email protected]>
 * @copyright Copyright (c) 2012, Jonathan Jaubart
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3
 */

namespace MyArtJaub\Webtrees; 

use Fisharebest\Webtrees\Module\AbstractModule;
use Psr\Cache\CacheItemInterface;
use Psr\Cache\CacheItemPoolInterface;
use Stash\Driver\Apc;
use Stash\Driver\Ephemeral;
use Stash\Driver\FileSystem;

/**
 * Cache component to speed up some potential data retrievals
 */
class Cache{
	
    /**
     * Underlying Cache object
     * @var CacheItemPoolInterface $cache
     */
	protected $cache=null;
	
	/**
	 * Defines whether the cache has been initialised
	 * @var bool $is_init
	 */
	protected $is_init = false;
	
	/**
	 * *Cache* instance for Singleton pattern
	 * @var Cache $instance
	 */
	protected static $instance = null;
	
	/**
	 * Returns the *Cache* instance of this class.
	 *
	 * @return Cache The *Singleton* instance.
	 */
	protected static function getInstance()
	{
	    if (null === static::$instance) {
	        static::$instance = new static();
	    }
	
	    return static::$instance;
	}
	
	/**
	 * Initialise the Cache class
	 *
	 */
	protected function init() {		
	    if(Apc::isAvailable()) {
		    $driver = new Apc();
		} else {
			if (!is_dir(WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache')) {
				// We may not have permission - especially during setup, before we instruct
				// the user to "chmod 777 /data"
				@mkdir(WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache');
// For example instead of
@mkdir($dir);

// Better use
if (@mkdir($dir) === false) {
    throw new \RuntimeException('The directory '.$dir.' could not be created.');
}
			}
			if (is_dir(WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache')) {
			    $driver = new FileSystem(array('path' => WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache'));
			} else {
				// No cache available, let's just use a basic one :-(
				$driver = new Ephemeral();
			}
		}		

		$this->cache = new \Stash\Pool($driver);		
		$this->is_init = true;
	}
	
	/**
	 * Initiliase the Cache if not done.
	 *
	 */
	protected function checkInit(){
		if(!$this->is_init) $this->init();
	}
	
	/**
	 * Returns the name of the cached key, based on the value name and the calling module
	 *
	 * @param string $value Value name
	 * @param AbstractModule $mod Calling module
	 * @return string Cached key name
	 */
	protected function getKeyName($value, AbstractModule $mod = null){
	    $this->checkInit();
		$mod_name = 'myartjaub';
		if($mod !== null) $mod_name = $mod->getName();
		return $mod_name.'_'.$value;
	}
	
	/**
	 * Returns the cached value, if exists
	 * 
	 * @param string $value Value name
	 * @param AbstractModule $mod Calling module
	 * @return \Psr\Cache\CacheItemInterface
	 */
	public function getI($value, AbstractModule $mod = null){
	    $this->checkInit();
		return $this->cache->getItem($this->getKeyName($value, $mod));
	}
	
	/**
	 * Static invocation of the *get* method.
	 *
	 * @param string $value Value name
	 * @param AbstractModule $mod Calling module
	 * @return \Psr\Cache\CacheItemInterface
	 */
	public static function get($value, AbstractModule $mod = null){
	    return self::getInstance()->getI($value, $mod);
	}
	
	/**
	 * Cache a value to the specified key
	 *
	 * @param string|\Psr\Cache\CacheItemInterface $value Value name
	 * @param mixed $data Value
	 * @param AbstractModule $mod Calling module
	 */
	public function saveI($value, $data, AbstractModule $mod = null){
		$this->checkInit();
		
		$item = $value;
		if(!($value instanceof CacheItemInterface)) {
		    $item = new \Stash\Item();
    		$item->setKey($this->getKeyName($value, $mod));
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
		}		
		$item->set($data);
		$this->cache->save($item);
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
	}
	
	/**
	 * Static invocation of the *save* method.
	 *
	 * @param string|\Psr\Cache\CacheItemInterface $value Value name
	 * @param mixed $data Value
	 * @param AbstractModule $mod Calling module
	 */
	public static function save($value, $data, AbstractModule $mod = null){
	    self::getInstance()->saveI($value, $data, $mod);
	}
	
	/**
	 * Delete the value associated to the specified key
	 *
	 * @param string $value Value name
	 * @param AbstractModule $mod Calling module
	 * @return bool Deletion successful?
	 */
	public function deleteI($value, AbstractModule $mod = null){
	    $this->checkInit();	
	    return $this->cache->deleteItem($this->getKeyName($value, $mod));
	}
	
	/**
	 * Static invocation of the *delete* method.
	 *
	 * @param string $value Value name
	 * @param AbstractModule $mod Calling module
	 * @return bool Deletion successful?
	 */
	public static function delete($value, AbstractModule $mod = null){
	    return self::getInstance()->deleteI($value, $mod);
	}
	
	/**
	 * Clean the cache
	 *
	 */
	public function cleanI(){
	    $this->checkInit();
		$this->cache->clear();
	}
	
	/**
	 * Static invocation of the *clean* method.
	 */
	public static function clean() {
	    self::getInstance()->cleanI();
	}
	
}

1			<?php
2			/**
3			* webtrees-lib: MyArtJaub library for webtrees
4			*
5			* @package MyArtJaub\Webtrees
6			* @author Jonathan Jaubart <[email protected]>
7			* @copyright Copyright (c) 2012, Jonathan Jaubart
8			* @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3
9			*/
10
11			namespace MyArtJaub\Webtrees;
12
13			use Fisharebest\Webtrees\Module\AbstractModule;
14			use Psr\Cache\CacheItemInterface;
15			use Psr\Cache\CacheItemPoolInterface;
16			use Stash\Driver\Apc;
17			use Stash\Driver\Ephemeral;
18			use Stash\Driver\FileSystem;
19
20			/**
21			* Cache component to speed up some potential data retrievals
22			*/
23			class Cache{
24
25			/**
26			* Underlying Cache object
27			* @var CacheItemPoolInterface $cache
28			*/
29			protected $cache=null;
30
31			/**
32			* Defines whether the cache has been initialised
33			* @var bool $is_init
34			*/
35			protected $is_init = false;
36
37			/**
38			* Cache instance for Singleton pattern
39			* @var Cache $instance
40			*/
41			protected static $instance = null;
42
43			/**
44			* Returns the Cache instance of this class.
45			*
46			* @return Cache The Singleton instance.
47			*/
48			protected static function getInstance()
49			{
50			if (null === static::$instance) {
51			static::$instance = new static();
52			}
53
54			return static::$instance;
55			}
56
57			/**
58			* Initialise the Cache class
59			*
60			*/
61			protected function init() {
62			if(Apc::isAvailable()) {
63			$driver = new Apc();
64			} else {
65			if (!is_dir(WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache')) {
66			// We may not have permission - especially during setup, before we instruct
67			// the user to "chmod 777 /data"
68			@mkdir(WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache');
			0 ignored issues – show Security Best Practice introduced 2016-06-27 12:58 UTC by Report Bug Copy Issue Report It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended. If you suppress an error, we recommend checking for the error condition explicitly: // For example instead of @mkdir($dir); // Better use if (@mkdir($dir) === false) { throw new \RuntimeException('The directory '.$dir.' could not be created.'); } Loading history...
69			}
70			if (is_dir(WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache')) {
71			$driver = new FileSystem(array('path' => WT_DATA_DIR.DIRECTORY_SEPARATOR.'cache'));
72			} else {
73			// No cache available, let's just use a basic one :-(
74			$driver = new Ephemeral();
75			}
76			}
77
78			$this->cache = new \Stash\Pool($driver);
79			$this->is_init = true;
80			}
81
82			/**
83			* Initiliase the Cache if not done.
84			*
85			*/
86			protected function checkInit(){
87			if(!$this->is_init) $this->init();
88			}
89
90			/**
91			* Returns the name of the cached key, based on the value name and the calling module
92			*
93			* @param string $value Value name
94			* @param AbstractModule $mod Calling module
95			* @return string Cached key name
96			*/
97			protected function getKeyName($value, AbstractModule $mod = null){
98			$this->checkInit();
99			$mod_name = 'myartjaub';
100			if($mod !== null) $mod_name = $mod->getName();
101			return $mod_name.'_'.$value;
102			}
103
104			/**
105			* Returns the cached value, if exists
106			*
107			* @param string $value Value name
108			* @param AbstractModule $mod Calling module
109			* @return \Psr\Cache\CacheItemInterface
110			*/
111			public function getI($value, AbstractModule $mod = null){
112			$this->checkInit();
113			return $this->cache->getItem($this->getKeyName($value, $mod));
114			}
115
116			/**
117			* Static invocation of the get method.
118			*
119			* @param string $value Value name
120			* @param AbstractModule $mod Calling module
121			* @return \Psr\Cache\CacheItemInterface
122			*/
123			public static function get($value, AbstractModule $mod = null){
124			return self::getInstance()->getI($value, $mod);
125			}
126
127			/**
128			* Cache a value to the specified key
129			*
130			* @param string\|\Psr\Cache\CacheItemInterface $value Value name
131			* @param mixed $data Value
132			* @param AbstractModule $mod Calling module
133			*/
134			public function saveI($value, $data, AbstractModule $mod = null){
135			$this->checkInit();
136
137			$item = $value;
138			if(!($value instanceof CacheItemInterface)) {
139			$item = new \Stash\Item();
140			$item->setKey($this->getKeyName($value, $mod));
			0 ignored issues – show Documentation introduced 2016-10-01 22:43 UTC by Report Bug Copy Issue Report `$this->getKeyName($value, $mod)` is of type `string`, but the function expects a `array`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
141			}
142			$item->set($data);
143			$this->cache->save($item);
			0 ignored issues – show Bug introduced 2016-10-01 22:43 UTC by Report Bug Copy Issue Report It seems like `$item` defined by `$value` on line `137` can also be of type `string`; however, `Psr\Cache\CacheItemPoolInterface::save()` does only seem to accept `object<Psr\Cache\CacheItemInterface>`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
144			}
145
146			/**
147			* Static invocation of the save method.
148			*
149			* @param string\|\Psr\Cache\CacheItemInterface $value Value name
150			* @param mixed $data Value
151			* @param AbstractModule $mod Calling module
152			*/
153			public static function save($value, $data, AbstractModule $mod = null){
154			self::getInstance()->saveI($value, $data, $mod);
155			}
156
157			/**
158			* Delete the value associated to the specified key
159			*
160			* @param string $value Value name
161			* @param AbstractModule $mod Calling module
162			* @return bool Deletion successful?
163			*/
164			public function deleteI($value, AbstractModule $mod = null){
165			$this->checkInit();
166			return $this->cache->deleteItem($this->getKeyName($value, $mod));
167			}
168
169			/**
170			* Static invocation of the delete method.
171			*
172			* @param string $value Value name
173			* @param AbstractModule $mod Calling module
174			* @return bool Deletion successful?
175			*/
176			public static function delete($value, AbstractModule $mod = null){
177			return self::getInstance()->deleteI($value, $mod);
178			}
179
180			/**
181			* Clean the cache
182			*
183			*/
184			public function cleanI(){
185			$this->checkInit();
186			$this->cache->clear();
187			}
188
189			/**
190			* Static invocation of the clean method.
191			*/
192			public static function clean() {
193			self::getInstance()->cleanI();
194			}
195
196			}

jon48 / webtrees-lib

Push — master ( 604bee...544e34 )

Cache::delete() A

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