defender-security / lib / packages / DI / Definition / Source / SourceCache.php

SourceCache.php in Defender Security – Malware Scanner, Login Security & Firewall 5.4.0, at lib/packages/DI/Definition/Source/SourceCache.php

89 lines 2.7 KB

Raw Download Zip

1	<?php
2
3	namespace WPMU_DEV\Defender\Vendor\DI\Definition\Source;
4
5	use WPMU_DEV\Defender\Vendor\DI\Definition\AutowireDefinition;
6	use WPMU_DEV\Defender\Vendor\DI\Definition\Definition;
7	use WPMU_DEV\Defender\Vendor\DI\Definition\ObjectDefinition;
8
9	/**
10	* Decorator that caches another definition source.
11	*
12	* @author Matthieu Napoli <[email protected]>
13	*/
14	class SourceCache implements DefinitionSource, MutableDefinitionSource
15	{
16	/**
17	* @var string
18	*/
19	const CACHE_KEY = 'php-di.definitions.';
20
21	/**
22	* @var DefinitionSource
23	*/
24	private $cachedSource;
25
26	/**
27	* @var string
28	*/
29	private $cacheNamespace;
30
31	public function __construct(DefinitionSource $cachedSource, string $cacheNamespace = '')
32	{
33	$this->cachedSource = $cachedSource;
34	$this->cacheNamespace = $cacheNamespace;
35	}
36
37	public function getDefinition(string $name)
38	{
39	$definition = apcu_fetch($this->getCacheKey($name));
40
41	if ($definition === false) {
42	$definition = $this->cachedSource->getDefinition($name);
43
44	// Update the cache
45	if ($this->shouldBeCached($definition)) {
46	apcu_store($this->getCacheKey($name), $definition);
47	}
48	}
49
50	return $definition;
51	}
52
53	/**
54	* Used only for the compilation so we can skip the cache safely.
55	*/
56	public function getDefinitions() : array
57	{
58	return $this->cachedSource->getDefinitions();
59	}
60
61	public static function isSupported() : bool
62	{
63	return function_exists('apcu_fetch')
64	&& ini_get('apc.enabled')
65	&& ! ('cli' === \PHP_SAPI && ! ini_get('apc.enable_cli'));
66	}
67
68	public function getCacheKey(string $name) : string
69	{
70	return self::CACHE_KEY . $this->cacheNamespace . $name;
71	}
72
73	public function addDefinition(Definition $definition)
74	{
75	throw new \LogicException('You cannot set a definition at runtime on a container that has caching enabled. Doing so would risk caching the definition for the next execution, where it might be different. You can either put your definitions in a file, remove the cache or ->set() a raw value directly (PHP object, string, int, ...) instead of a PHP-WPMU_DEV\Defender\Vendor\DI definition.');
76	}
77
78	private function shouldBeCached(Definition $definition = null) : bool
79	{
80	return
81	// Cache missing definitions
82	($definition === null)
83	// Object definitions are used with `make()`
84	\|\| ($definition instanceof ObjectDefinition)
85	// Autowired definitions cannot be all compiled and are used with `make()`
86	\|\| ($definition instanceof AutowireDefinition);
87	}
88	}
89