PsrCacheResolver::__construct() - Code Metrics - Inspection of "Allow installing doctrine/cache 2.0" - liip/LiipImagineBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — 2.x (#1375)

by Andreas

created 2021-05-31 12:15 UTC

PsrCacheResolver::__construct() A

↳ Parent: PsrCacheResolver

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	12
rs	9.8666
c	0
b	0
f	0
cc	2
nc	2
nop	4

<?php

/*
 * This file is part of the `liip/LiipImagineBundle` project.
 *
 * (c) https://github.com/liip/LiipImagineBundle/graphs/contributors
 *
 * For the full copyright and license information, please view the LICENSE.md
 * file that was distributed with this source code.
 */

namespace Liip\ImagineBundle\Imagine\Cache\Resolver;

use Liip\ImagineBundle\Binary\BinaryInterface;
use Psr\Cache\CacheItemInterface;
use Psr\Cache\CacheItemPoolInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use function str_replace;

class PsrCacheResolver implements ResolverInterface
{
    private const RESERVED_CHARACTERS = [
        '{',
        '}',
        '(',
        ')',
        '/',
        '\\',
        '@',
        ':',
        '.',
    ];

    /**
     * @var CacheItemPoolInterface
     */
    protected $cache;

    /**
     * @var array
     */
    protected $options = [];

    /**
     * @var ResolverInterface
     */
    protected $resolver;

    /**
     * Constructor.
     *
     * Available options:
     * * global_prefix
     *   A prefix for all keys within the cache. This is useful to avoid colliding keys when using the same cache for different systems.
     * * prefix
     *   A "local" prefix for this wrapper. This is useful when re-using the same resolver for multiple filters.
     * * index_key
     *   The name of the index key being used to save a list of created cache keys regarding one image and filter pairing.
     *
     * @param OptionsResolver $optionsResolver
     */
    public function __construct(CacheItemPoolInterface $cache, ResolverInterface $cacheResolver, array $options = [], OptionsResolver $optionsResolver = null)
    {
        $this->cache = $cache;
        $this->resolver = $cacheResolver;

        if (null === $optionsResolver) {
            $optionsResolver = new OptionsResolver();
        }

        $this->configureOptions($optionsResolver);
        $this->options = $optionsResolver->resolve($options);
    }

    /**
     * {@inheritdoc}
     */
    public function isStored($path, $filter)
    {
        $cacheKey = $this->generateCacheKey($path, $filter);

        return
            $this->cache->hasItem($cacheKey) ||
            $this->resolver->isStored($path, $filter);
    }

    /**
     * {@inheritdoc}
     */
    public function resolve($path, $filter)
    {
        $key = $this->generateCacheKey($path, $filter);
        $item = $this->cache->getItem($key);
        if ($item->isHit()) {
            return $item->get();
        }

        $resolved = $this->resolver->resolve($path, $filter);

        $item->set($resolved);
        $this->saveToCache($item);

        return $resolved;
    }

    /**
     * {@inheritdoc}
     */
    public function store(BinaryInterface $binary, $path, $filter)
    {
        $this->resolver->store($binary, $path, $filter);
    }

    /**
     * {@inheritdoc}
     */
    public function remove(array $paths, array $filters)
    {
        $this->resolver->remove($paths, $filters);

        foreach ($filters as $filter) {
            if (empty($paths)) {
                $this->removePathAndFilter(null, $filter);
            } else {
                foreach ($paths as $path) {
                    $this->removePathAndFilter($path, $filter);
                }
            }
        }
    }

    /**
     * Generate a unique cache key based on the given parameters.
     *
     * When overriding this method, ensure generateIndexKey is adjusted accordingly.
     *
     * @param string $path   The image path in use
     * @param string $filter The filter in use
     *
     * @return string
     */
    public function generateCacheKey($path, $filter)
    {
        return implode('.', [
            $this->sanitizeCacheKeyPart($this->options['global_prefix']),
            $this->sanitizeCacheKeyPart($this->options['prefix']),
            $this->sanitizeCacheKeyPart($filter),
            $this->sanitizeCacheKeyPart($path),
        ]);
    }

    protected function removePathAndFilter($path, $filter)
    {
        $indexKey = $this->generateIndexKey($this->generateCacheKey($path, $filter));
        $indexItem = $this->cache->getItem($indexKey);
        if (!$indexItem->isHit()) {
            return;
        }

        $index = $indexItem->get();

        if (null === $path) {
            foreach ($index as $eachCacheKey) {
                $this->cache->deleteItem($eachCacheKey);
            }

            $index = [];
        } else {
            $cacheKey = $this->generateCacheKey($path, $filter);
            if (false !== $indexIndex = array_search($cacheKey, $index, true)) {
                unset($index[$indexIndex]);
                $this->cache->deleteItem($cacheKey);
            }
        }

        if (empty($index)) {
            $this->cache->deleteItem($indexKey);
        } else {
            $indexItem->set($index);
            $this->cache->save($indexItem);
        }
    }

    /**
     * Generate the index key for the given cacheKey.
     *
     * The index contains a list of cache keys related to an image and a filter.
     *
     * @param string $cacheKey
     *
     * @return string
     */
    protected function generateIndexKey($cacheKey)
    {
        $cacheKeyStack = explode('.', $cacheKey);

        return implode('.', [
            $this->sanitizeCacheKeyPart($this->options['global_prefix']),
            $this->sanitizeCacheKeyPart($this->options['prefix']),
            $this->sanitizeCacheKeyPart($this->options['index_key']),
            $this->sanitizeCacheKeyPart($cacheKeyStack[2]), // filter
        ]);
    }

    /**
     * @param string $cacheKeyPart
     *
     * @return string
     */
    protected function sanitizeCacheKeyPart($cacheKeyPart)
    {
        return str_replace(self::RESERVED_CHARACTERS, '_', $cacheKeyPart);
    }

    /**
     * Save the given content to the cache and update the cache index.
     *
     * @return bool
     */
    protected function saveToCache(CacheItemInterface $item)
    {
        $cacheKey = $item->getKey();

        // Create or update the index list containing all cache keys for a given image and filter pairing.
        $indexKey = $this->generateIndexKey($cacheKey);
        $indexItem = $this->cache->getItem($indexKey);
        if ($indexItem->isHit()) {
            $index = (array) $indexItem->get();

            if (!\in_array($cacheKey, $index, true)) {
                $index[] = $cacheKey;
            }
        } else {
            $index = [$cacheKey];
        }

        $indexItem->set($index);
        $this->cache->saveDeferred($indexItem);
        $this->cache->saveDeferred($item);

        return $this->cache->commit();
    }

    protected function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'global_prefix' => 'liip_imagine.resolver_psr_cache',
            'prefix' => \get_class($this->resolver),
            'index_key' => 'index',
        ]);

        $allowedTypesList = [
          'global_prefix' => 'string',
          'prefix' => 'string',
          'index_key' => 'string',
        ];

        foreach ($allowedTypesList as $option => $allowedTypes) {
            $resolver->setAllowedTypes($option, $allowedTypes);
        }
    }

    protected function setDefaultOptions(OptionsResolver $resolver)
    {
        $this->configureOptions($resolver);
    }
}


1			<?php
2
3			/*
4			* This file is part of the `liip/LiipImagineBundle` project.
5			*
6			* (c) https://github.com/liip/LiipImagineBundle/graphs/contributors
7			*
8			* For the full copyright and license information, please view the LICENSE.md
9			* file that was distributed with this source code.
10			*/
11
12			namespace Liip\ImagineBundle\Imagine\Cache\Resolver;
13
14			use Liip\ImagineBundle\Binary\BinaryInterface;
15			use Psr\Cache\CacheItemInterface;
16			use Psr\Cache\CacheItemPoolInterface;
17			use Symfony\Component\OptionsResolver\OptionsResolver;
18			use function str_replace;
19
20			class PsrCacheResolver implements ResolverInterface
21			{
22			private const RESERVED_CHARACTERS = [
23			'{',
24			'}',
25			'(',
26			')',
27			'/',
28			'\\',
29			'@',
30			':',
31			'.',
32			];
33
34			/**
35			* @var CacheItemPoolInterface
36			*/
37			protected $cache;
38
39			/**
40			* @var array
41			*/
42			protected $options = [];
43
44			/**
45			* @var ResolverInterface
46			*/
47			protected $resolver;
48
49			/**
50			* Constructor.
51			*
52			* Available options:
53			* * global_prefix
54			* A prefix for all keys within the cache. This is useful to avoid colliding keys when using the same cache for different systems.
55			* * prefix
56			* A "local" prefix for this wrapper. This is useful when re-using the same resolver for multiple filters.
57			* * index_key
58			* The name of the index key being used to save a list of created cache keys regarding one image and filter pairing.
59			*
60			* @param OptionsResolver $optionsResolver
61			*/
62			public function __construct(CacheItemPoolInterface $cache, ResolverInterface $cacheResolver, array $options = [], OptionsResolver $optionsResolver = null)
63			{
64			$this->cache = $cache;
65			$this->resolver = $cacheResolver;
66
67			if (null === $optionsResolver) {
68			$optionsResolver = new OptionsResolver();
69			}
70
71			$this->configureOptions($optionsResolver);
72			$this->options = $optionsResolver->resolve($options);
73			}
74
75			/**
76			* {@inheritdoc}
77			*/
78			public function isStored($path, $filter)
79			{
80			$cacheKey = $this->generateCacheKey($path, $filter);
81
82			return
83			$this->cache->hasItem($cacheKey) \|\|
84			$this->resolver->isStored($path, $filter);
85			}
86
87			/**
88			* {@inheritdoc}
89			*/
90			public function resolve($path, $filter)
91			{
92			$key = $this->generateCacheKey($path, $filter);
93			$item = $this->cache->getItem($key);
94			if ($item->isHit()) {
95			return $item->get();
96			}
97
98			$resolved = $this->resolver->resolve($path, $filter);
99
100			$item->set($resolved);
101			$this->saveToCache($item);
102
103			return $resolved;
104			}
105
106			/**
107			* {@inheritdoc}
108			*/
109			public function store(BinaryInterface $binary, $path, $filter)
110			{
111			$this->resolver->store($binary, $path, $filter);
112			}
113
114			/**
115			* {@inheritdoc}
116			*/
117			public function remove(array $paths, array $filters)
118			{
119			$this->resolver->remove($paths, $filters);
120
121			foreach ($filters as $filter) {
122			if (empty($paths)) {
123			$this->removePathAndFilter(null, $filter);
124			} else {
125			foreach ($paths as $path) {
126			$this->removePathAndFilter($path, $filter);
127			}
128			}
129			}
130			}
131
132			/**
133			* Generate a unique cache key based on the given parameters.
134			*
135			* When overriding this method, ensure generateIndexKey is adjusted accordingly.
136			*
137			* @param string $path The image path in use
138			* @param string $filter The filter in use
139			*
140			* @return string
141			*/
142			public function generateCacheKey($path, $filter)
143			{
144			return implode('.', [
145			$this->sanitizeCacheKeyPart($this->options['global_prefix']),
146			$this->sanitizeCacheKeyPart($this->options['prefix']),
147			$this->sanitizeCacheKeyPart($filter),
148			$this->sanitizeCacheKeyPart($path),
149			]);
150			}
151
152			protected function removePathAndFilter($path, $filter)
153			{
154			$indexKey = $this->generateIndexKey($this->generateCacheKey($path, $filter));
155			$indexItem = $this->cache->getItem($indexKey);
156			if (!$indexItem->isHit()) {
157			return;
158			}
159
160			$index = $indexItem->get();
161
162			if (null === $path) {
163			foreach ($index as $eachCacheKey) {
164			$this->cache->deleteItem($eachCacheKey);
165			}
166
167			$index = [];
168			} else {
169			$cacheKey = $this->generateCacheKey($path, $filter);
170			if (false !== $indexIndex = array_search($cacheKey, $index, true)) {
171			unset($index[$indexIndex]);
172			$this->cache->deleteItem($cacheKey);
173			}
174			}
175
176			if (empty($index)) {
177			$this->cache->deleteItem($indexKey);
178			} else {
179			$indexItem->set($index);
180			$this->cache->save($indexItem);
181			}
182			}
183
184			/**
185			* Generate the index key for the given cacheKey.
186			*
187			* The index contains a list of cache keys related to an image and a filter.
188			*
189			* @param string $cacheKey
190			*
191			* @return string
192			*/
193			protected function generateIndexKey($cacheKey)
194			{
195			$cacheKeyStack = explode('.', $cacheKey);
196
197			return implode('.', [
198			$this->sanitizeCacheKeyPart($this->options['global_prefix']),
199			$this->sanitizeCacheKeyPart($this->options['prefix']),
200			$this->sanitizeCacheKeyPart($this->options['index_key']),
201			$this->sanitizeCacheKeyPart($cacheKeyStack[2]), // filter
202			]);
203			}
204
205			/**
206			* @param string $cacheKeyPart
207			*
208			* @return string
209			*/
210			protected function sanitizeCacheKeyPart($cacheKeyPart)
211			{
212			return str_replace(self::RESERVED_CHARACTERS, '_', $cacheKeyPart);
213			}
214
215			/**
216			* Save the given content to the cache and update the cache index.
217			*
218			* @return bool
219			*/
220			protected function saveToCache(CacheItemInterface $item)
221			{
222			$cacheKey = $item->getKey();
223
224			// Create or update the index list containing all cache keys for a given image and filter pairing.
225			$indexKey = $this->generateIndexKey($cacheKey);
226			$indexItem = $this->cache->getItem($indexKey);
227			if ($indexItem->isHit()) {
228			$index = (array) $indexItem->get();
229
230			if (!\in_array($cacheKey, $index, true)) {
231			$index[] = $cacheKey;
232			}
233			} else {
234			$index = [$cacheKey];
235			}
236
237			$indexItem->set($index);
238			$this->cache->saveDeferred($indexItem);
239			$this->cache->saveDeferred($item);
240
241			return $this->cache->commit();
242			}
243
244			protected function configureOptions(OptionsResolver $resolver)
245			{
246			$resolver->setDefaults([
247			'global_prefix' => 'liip_imagine.resolver_psr_cache',
248			'prefix' => \get_class($this->resolver),
249			'index_key' => 'index',
250			]);
251
252			$allowedTypesList = [
253			'global_prefix' => 'string',
254			'prefix' => 'string',
255			'index_key' => 'string',
256			];
257
258			foreach ($allowedTypesList as $option => $allowedTypes) {
259			$resolver->setAllowedTypes($option, $allowedTypes);
260			}
261			}
262
263			protected function setDefaultOptions(OptionsResolver $resolver)
264			{
265			$this->configureOptions($resolver);
266			}
267			}
268

liip / LiipImagineBundle

Pull Request — 2.x (#1375)

PsrCacheResolver::__construct() A

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Duplication

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