CacheResolver::remove() - Code Metrics - Inspection of "Merge pull request #732 from Haehnchen/patch/event..." - liip/LiipImagineBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 0a7932...aee286 )

by Maksim

created 2016-05-05 11:15 UTC

CacheResolver::remove() A

↳ Parent: CacheResolver

Complexity

Conditions	4
Paths	3

Size

Total Lines	14
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Metric	Value
dl	0
loc	14
rs	9.2
cc	4
eloc	8
nc	3
nop	2

<?php

namespace Liip\ImagineBundle\Imagine\Cache\Resolver;

use Doctrine\Common\Cache\Cache;
use Liip\ImagineBundle\Binary\BinaryInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\HttpKernel\Kernel;

class CacheResolver implements ResolverInterface
{
    /**
     * @var Cache
     */
    protected $cache;

    protected $options = array();

    /**
     * @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 Cache                    $cache
     * @param ResolverInterface        $cacheResolver
     * @param array                    $options
     * @param OptionsResolverInterface $optionsResolver
     */
    public function __construct(Cache $cache, ResolverInterface $cacheResolver, array $options = array(), OptionsResolverInterface $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
            $this->cache->contains($cacheKey) ||
            $this->resolver->isStored($path, $filter)
        ;
    }

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

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

        $this->saveToCache($key, $resolved);

        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);
                }
            }
        }
    }

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

        $index = $this->cache->fetch($indexKey);

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

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

        if (empty($index)) {
            $this->cache->delete($indexKey);
        } else {
            $this->cache->save($indexKey, $index);
        }
    }

    /**
     * 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('.', array(
            $this->sanitizeCacheKeyPart($this->options['global_prefix']),
            $this->sanitizeCacheKeyPart($this->options['prefix']),
            $this->sanitizeCacheKeyPart($filter),
            $this->sanitizeCacheKeyPart($path),
        ));
    }

    /**
     * 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('.', array(
            $this->sanitizeCacheKeyPart($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('.', '_', $cacheKeyPart);
    }

    /**
     * Save the given content to the cache and update the cache index.
     *
     * @param string $cacheKey
     * @param mixed  $content
     *
     * @return bool
     */
    protected function saveToCache($cacheKey, $content)
    {
        // Create or update the index list containing all cache keys for a given image and filter pairing.
        $indexKey = $this->generateIndexKey($cacheKey);
        if ($this->cache->contains($indexKey)) {
            $index = (array) $this->cache->fetch($indexKey);

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

        /*
         * Only save the content, if the index has been updated successfully.
         * This is required to have a (hopefully) synchron state between cache and backend.
         *
         * "Hopefully" because there are caches (like Memcache) which will remove keys by themselves.
         */
        if ($this->cache->save($indexKey, $index)) {
            return $this->cache->save($cacheKey, $content);
        }

        return false;
    }

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

        $allowedTypesList = array(
          'global_prefix' => 'string',
          'prefix' => 'string',
          'index_key' => 'string',
        );

        if (version_compare(Kernel::VERSION_ID, '20600') >= 0) {
            foreach ($allowedTypesList as $option => $allowedTypes) {
                $resolver->setAllowedTypes($option, $allowedTypes);
            }
        } else {
            $resolver->setAllowedTypes($allowedTypesList);
function acceptsInteger($int) { }

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

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
        }
    }

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


1			<?php
2
3			namespace Liip\ImagineBundle\Imagine\Cache\Resolver;
4
5			use Doctrine\Common\Cache\Cache;
6			use Liip\ImagineBundle\Binary\BinaryInterface;
7			use Symfony\Component\OptionsResolver\OptionsResolver;
8			use Symfony\Component\OptionsResolver\OptionsResolverInterface;
9			use Symfony\Component\HttpKernel\Kernel;
10
11			class CacheResolver implements ResolverInterface
12			{
13			/**
14			* @var Cache
15			*/
16			protected $cache;
17
18			protected $options = array();
19
20			/**
21			* @var ResolverInterface
22			*/
23			protected $resolver;
24
25			/**
26			* Constructor.
27			*
28			* Available options:
29			* * global_prefix
30			* A prefix for all keys within the cache. This is useful to avoid colliding keys when using the same cache for different systems.
31			* * prefix
32			* A "local" prefix for this wrapper. This is useful when re-using the same resolver for multiple filters.
33			* * index_key
34			* The name of the index key being used to save a list of created cache keys regarding one image and filter pairing.
35			*
36			* @param Cache $cache
37			* @param ResolverInterface $cacheResolver
38			* @param array $options
39			* @param OptionsResolverInterface $optionsResolver
40			*/
41			public function __construct(Cache $cache, ResolverInterface $cacheResolver, array $options = array(), OptionsResolverInterface $optionsResolver = null)
42			{
43			$this->cache = $cache;
44			$this->resolver = $cacheResolver;
45
46			if (null === $optionsResolver) {
47			$optionsResolver = new OptionsResolver();
48			}
49
50			$this->configureOptions($optionsResolver);
51			$this->options = $optionsResolver->resolve($options);
52			}
53
54			/**
55			* {@inheritdoc}
56			*/
57			public function isStored($path, $filter)
58			{
59			$cacheKey = $this->generateCacheKey($path, $filter);
60
61			return
62			$this->cache->contains($cacheKey) \|\|
63			$this->resolver->isStored($path, $filter)
64			;
65			}
66
67			/**
68			* {@inheritdoc}
69			*/
70			public function resolve($path, $filter)
71			{
72			$key = $this->generateCacheKey($path, $filter);
73			if ($this->cache->contains($key)) {
74			return $this->cache->fetch($key);
75			}
76
77			$resolved = $this->resolver->resolve($path, $filter);
78
79			$this->saveToCache($key, $resolved);
80
81			return $resolved;
82			}
83
84			/**
85			* {@inheritdoc}
86			*/
87			public function store(BinaryInterface $binary, $path, $filter)
88			{
89			$this->resolver->store($binary, $path, $filter);
90			}
91
92			/**
93			* {@inheritdoc}
94			*/
95			public function remove(array $paths, array $filters)
96			{
97			$this->resolver->remove($paths, $filters);
98
99			foreach ($filters as $filter) {
100			if (empty($paths)) {
101			$this->removePathAndFilter(null, $filter);
102			} else {
103			foreach ($paths as $path) {
104			$this->removePathAndFilter($path, $filter);
105			}
106			}
107			}
108			}
109
110			protected function removePathAndFilter($path, $filter)
111			{
112			$indexKey = $this->generateIndexKey($this->generateCacheKey($path, $filter));
113			if (!$this->cache->contains($indexKey)) {
114			return;
115			}
116
117			$index = $this->cache->fetch($indexKey);
118
119			if (null === $path) {
120			foreach ($index as $eachCacheKey) {
121			$this->cache->delete($eachCacheKey);
122			}
123
124			$index = array();
125			} else {
126			$cacheKey = $this->generateCacheKey($path, $filter);
127			if (false !== $indexIndex = array_search($cacheKey, $index)) {
128			unset($index[$indexIndex]);
129			$this->cache->delete($cacheKey);
130			}
131			}
132
133			if (empty($index)) {
134			$this->cache->delete($indexKey);
135			} else {
136			$this->cache->save($indexKey, $index);
137			}
138			}
139
140			/**
141			* Generate a unique cache key based on the given parameters.
142			*
143			* When overriding this method, ensure generateIndexKey is adjusted accordingly.
144			*
145			* @param string $path The image path in use.
146			* @param string $filter The filter in use.
147			*
148			* @return string
149			*/
150			public function generateCacheKey($path, $filter)
151			{
152			return implode('.', array(
153			$this->sanitizeCacheKeyPart($this->options['global_prefix']),
154			$this->sanitizeCacheKeyPart($this->options['prefix']),
155			$this->sanitizeCacheKeyPart($filter),
156			$this->sanitizeCacheKeyPart($path),
157			));
158			}
159
160			/**
161			* Generate the index key for the given cacheKey.
162			*
163			* The index contains a list of cache keys related to an image and a filter.
164			*
165			* @param string $cacheKey
166			*
167			* @return string
168			*/
169			protected function generateIndexKey($cacheKey)
170			{
171			$cacheKeyStack = explode('.', $cacheKey);
172
173			return implode('.', array(
174			$this->sanitizeCacheKeyPart($this->options['global_prefix']),
175			$this->sanitizeCacheKeyPart($this->options['prefix']),
176			$this->sanitizeCacheKeyPart($this->options['index_key']),
177			$this->sanitizeCacheKeyPart($cacheKeyStack[2]), // filter
178			));
179			}
180
181			/**
182			* @param string $cacheKeyPart
183			*
184			* @return string
185			*/
186			protected function sanitizeCacheKeyPart($cacheKeyPart)
187			{
188			return str_replace('.', '_', $cacheKeyPart);
189			}
190
191			/**
192			* Save the given content to the cache and update the cache index.
193			*
194			* @param string $cacheKey
195			* @param mixed $content
196			*
197			* @return bool
198			*/
199			protected function saveToCache($cacheKey, $content)
200			{
201			// Create or update the index list containing all cache keys for a given image and filter pairing.
202			$indexKey = $this->generateIndexKey($cacheKey);
203			if ($this->cache->contains($indexKey)) {
204			$index = (array) $this->cache->fetch($indexKey);
205
206			if (!in_array($cacheKey, $index)) {
207			$index[] = $cacheKey;
208			}
209			} else {
210			$index = array($cacheKey);
211			}
212
213			/*
214			* Only save the content, if the index has been updated successfully.
215			* This is required to have a (hopefully) synchron state between cache and backend.
216			*
217			* "Hopefully" because there are caches (like Memcache) which will remove keys by themselves.
218			*/
219			if ($this->cache->save($indexKey, $index)) {
220			return $this->cache->save($cacheKey, $content);
221			}
222
223			return false;
224			}
225
226			protected function configureOptions(OptionsResolver $resolver)
227			{
228			$resolver->setDefaults(array(
229			'global_prefix' => 'liip_imagine.resolver_cache',
230			'prefix' => get_class($this->resolver),
231			'index_key' => 'index',
232			));
233
234			$allowedTypesList = array(
235			'global_prefix' => 'string',
236			'prefix' => 'string',
237			'index_key' => 'string',
238			);
239
240			if (version_compare(Kernel::VERSION_ID, '20600') >= 0) {
241			foreach ($allowedTypesList as $option => $allowedTypes) {
242			$resolver->setAllowedTypes($option, $allowedTypes);
243			}
244			} else {
245			$resolver->setAllowedTypes($allowedTypesList);
			0 ignored issues – show Bug introduced 2015-11-24 10:50 UTC by Report Bug Copy Issue Report The call to `setAllowedTypes()` misses a required argument `$allowedTypes`. This check looks for function calls that miss required arguments. Loading history... Documentation introduced 2015-11-24 10:50 UTC by Report Bug Copy Issue Report `$allowedTypesList` is of type `array<string,string,{"gl...,"index_key":"string"}>`, but the function expects a `string`. 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...
246			}
247			}
248
249			protected function setDefaultOptions(OptionsResolverInterface $resolver)
250			{
251			$this->configureOptions($resolver);
252			}
253			}
254

liip / LiipImagineBundle

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CacheResolver::remove() A

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