CachePathManager::flushCacheState() - Code Metrics - Inspection of "Fixed cache permissions, resolves #275" - goaop/framework - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 1.x ( 784bb7...3079dc )

by Alexander

created 2016-04-26 19:07 UTC

CachePathManager::flushCacheState() B

↳ Parent: CachePathManager

Complexity

Conditions	4
Paths	3

Size

Total Lines	23
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	20

Importance

Changes	2
Bugs	1	Features	0

Metric	Value
c	2
b	1
f	0
dl	0
loc	23
ccs	0
cts	17
cp	0
rs	8.7972
cc	4
eloc	16
nc	3
nop	0
crap	20

<?php
/*
 * Go! AOP framework
 *
 * @copyright Copyright 2014, Lisachenko Alexander <[email protected]>
 *
 * This source file is subject to the license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Go\Instrument\ClassLoading;
use Go\Aop\Features;
use Go\Core\AspectKernel;

/**
 * Class that manages real-code to cached-code paths mapping.
 * Can be extended to get a more sophisticated real-to-cached code mapping
 */
class CachePathManager
{
    /**
     * Name of the file with cache paths
     */
    const CACHE_FILE_NAME = '/_transformation.cache';

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

    /**
     * @var \Go\Core\AspectKernel
     */
    protected $kernel;

    /**
     * @var string|null
     */
    protected $cacheDir;

    /**
     * File mode
     *
     * @var integer
     */
    protected $fileMode;

    /**
     * @var string|null
     */
    protected $appDir;

    /**
     * Cached metadata for transformation state for the concrete file
     *
     * @var array
     */
    protected $cacheState = [];

    /**
     * New metadata items, that was not present in $cacheState
     *
     * @var array
     */
    protected $newCacheState = [];

    public function __construct(AspectKernel $kernel)
    {
        $this->kernel   = $kernel;
        $this->options  = $kernel->getOptions();
        $this->appDir   = $this->options['appDir'];
        $this->cacheDir = $this->options['cacheDir'];
        $this->fileMode = $this->options['cacheFileMode'];

        if ($this->cacheDir) {
            if (!is_dir($this->cacheDir)) {
                $cacheRootDir = dirname($this->cacheDir);
                if (!is_writable($cacheRootDir) || !is_dir($cacheRootDir)) {
                    throw new \InvalidArgumentException(
                        "Can not create a directory {$this->cacheDir} for the cache.
                        Parent directory {$cacheRootDir} is not writable or not exist.");
                }
                mkdir($this->cacheDir, $this->fileMode, true);
            }
            if (!$this->kernel->hasFeature(Features::PREBUILT_CACHE) && !is_writable($this->cacheDir)) {
                throw new \InvalidArgumentException("Cache directory {$this->cacheDir} is not writable");
            }

            if (file_exists($this->cacheDir . self::CACHE_FILE_NAME)) {
                $this->cacheState = include $this->cacheDir . self::CACHE_FILE_NAME;
            }
        }
    }

    /**
     * Returns current cache directory for aspects, can be bull
     *
     * @return null|string
     */
    public function getCacheDir()
    {
        return $this->cacheDir;
    }

    /**
     * Configures a new cache directory for aspects
     *
     * @param string $cacheDir New cache directory
     */
    public function setCacheDir($cacheDir)
    {
        $this->cacheDir = $cacheDir;
    }

    /**
     * @param string $resource
     * @return bool|string
     */
    public function getCachePathForResource($resource)
    {
        if (!$this->cacheDir) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            return false;
        }

        return str_replace($this->appDir, $this->cacheDir, $resource);
    }

    /**
     * Tries to return an information for queried resource
     *
     * @param string|null $resource Name of the file or null to get all information
     *
     * @return array|null Information or null if no record in the cache
     */
    public function queryCacheState($resource = null)
    {
        if (!$resource) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            return $this->cacheState;
        }

        if (isset($this->newCacheState[$resource])) {
            return $this->newCacheState[$resource];
        }

        if (isset($this->cacheState[$resource])) {
            return $this->cacheState[$resource];
        }

        return null;
    }

    /**
     * Put a record about some resource in the cache
     *
     * This data will be persisted during object destruction
     *
     * @param string $resource Name of the file
     * @param array $metadata Miscellaneous information about resource
     */
    public function setCacheState($resource, array $metadata)
    {
        $this->newCacheState[$resource] = $metadata;
    }

    /**
     * Automatic destructor saves all new changes into the cache
     *
     * This implementation is not thread-safe, so be care
     */
    public function __destruct()
    {
        $this->flushCacheState();
    }

    /**
     * Flushes the cache state into the file
     */
    public function flushCacheState()
    {
        if (!empty($this->newCacheState) && is_writable($this->cacheDir)) {
            $fullCacheMap = $this->newCacheState + $this->cacheState;
            $cachePath    = substr(var_export($this->cacheDir, true), 1, -1);
            $rootPath     = substr(var_export($this->appDir, true), 1, -1);
            $cacheData    = '<?php return ' . var_export($fullCacheMap, true) . ';';
            $cacheData    = strtr($cacheData, array(
                '\'' . $cachePath => 'AOP_CACHE_DIR . \'',
                '\'' . $rootPath  => 'AOP_ROOT_DIR . \''
            ));
            $fullCacheFileName = $this->cacheDir . self::CACHE_FILE_NAME;
            file_put_contents($fullCacheFileName, $cacheData, LOCK_EX);
            // For cache files we don't want executable bits by default
            chmod($fullCacheFileName, $this->fileMode & (~0111));

            if (function_exists('opcache_invalidate')) {
                opcache_invalidate($fullCacheFileName, true);
            }
            $this->cacheState    = $this->newCacheState + $this->cacheState;
            $this->newCacheState = [];
        }
    }
}


1		<?php
2		/*
3		* Go! AOP framework
4		*
5		* @copyright Copyright 2014, Lisachenko Alexander <[email protected]>
6		*
7		* This source file is subject to the license that is bundled
8		* with this source code in the file LICENSE.
9		*/
10
11		namespace Go\Instrument\ClassLoading;
12		use Go\Aop\Features;
13		use Go\Core\AspectKernel;
14
15		/**
16		* Class that manages real-code to cached-code paths mapping.
17		* Can be extended to get a more sophisticated real-to-cached code mapping
18		*/
19		class CachePathManager
20		{
21		/**
22		* Name of the file with cache paths
23		*/
24		const CACHE_FILE_NAME = '/_transformation.cache';
25
26		/**
27		* @var array
28		*/
29		protected $options = [];
30
31		/**
32		* @var \Go\Core\AspectKernel
33		*/
34		protected $kernel;
35
36		/**
37		* @var string\|null
38		*/
39		protected $cacheDir;
40
41		/**
42		* File mode
43		*
44		* @var integer
45		*/
46		protected $fileMode;
47
48		/**
49		* @var string\|null
50		*/
51		protected $appDir;
52
53		/**
54		* Cached metadata for transformation state for the concrete file
55		*
56		* @var array
57		*/
58		protected $cacheState = [];
59
60		/**
61		* New metadata items, that was not present in $cacheState
62		*
63		* @var array
64		*/
65		protected $newCacheState = [];
66
67	9	public function __construct(AspectKernel $kernel)
68		{
69	9	$this->kernel = $kernel;
70	9	$this->options = $kernel->getOptions();
71	9	$this->appDir = $this->options['appDir'];
72	9	$this->cacheDir = $this->options['cacheDir'];
73	9	$this->fileMode = $this->options['cacheFileMode'];
74
75	9	if ($this->cacheDir) {
76		if (!is_dir($this->cacheDir)) {
77		$cacheRootDir = dirname($this->cacheDir);
78		if (!is_writable($cacheRootDir) \|\| !is_dir($cacheRootDir)) {
79		throw new \InvalidArgumentException(
80		"Can not create a directory {$this->cacheDir} for the cache.
81		Parent directory {$cacheRootDir} is not writable or not exist.");
82		}
83		mkdir($this->cacheDir, $this->fileMode, true);
84		}
85		if (!$this->kernel->hasFeature(Features::PREBUILT_CACHE) && !is_writable($this->cacheDir)) {
86		throw new \InvalidArgumentException("Cache directory {$this->cacheDir} is not writable");
87		}
88
89		if (file_exists($this->cacheDir . self::CACHE_FILE_NAME)) {
90		$this->cacheState = include $this->cacheDir . self::CACHE_FILE_NAME;
91		}
92		}
93	9	}
94
95		/**
96		* Returns current cache directory for aspects, can be bull
97		*
98		* @return null\|string
99		*/
100		public function getCacheDir()
101		{
102		return $this->cacheDir;
103		}
104
105		/**
106		* Configures a new cache directory for aspects
107		*
108		* @param string $cacheDir New cache directory
109		*/
110		public function setCacheDir($cacheDir)
111		{
112		$this->cacheDir = $cacheDir;
113		}
114
115		/**
116		* @param string $resource
117		* @return bool\|string
118		*/
119		public function getCachePathForResource($resource)
120		{
121		if (!$this->cacheDir) {
		0 ignored issues – show Bug Best Practice introduced 2015-11-22 20:20 UTC by Report Bug Copy Issue Report The expression `$this->cacheDir` of type `string\|null` is loosely compared to `false`; this is ambiguous if the string can be empty. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
122		return false;
123		}
124
125		return str_replace($this->appDir, $this->cacheDir, $resource);
126		}
127
128		/**
129		* Tries to return an information for queried resource
130		*
131		* @param string\|null $resource Name of the file or null to get all information
132		*
133		* @return array\|null Information or null if no record in the cache
134		*/
135		public function queryCacheState($resource = null)
136		{
137		if (!$resource) {
		0 ignored issues – show Bug Best Practice introduced 2015-11-22 20:20 UTC by Report Bug Copy Issue Report The expression `$resource` of type `string\|null` is loosely compared to `false`; this is ambiguous if the string can be empty. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
138		return $this->cacheState;
139		}
140
141		if (isset($this->newCacheState[$resource])) {
142		return $this->newCacheState[$resource];
143		}
144
145		if (isset($this->cacheState[$resource])) {
146		return $this->cacheState[$resource];
147		}
148
149		return null;
150		}
151
152		/**
153		* Put a record about some resource in the cache
154		*
155		* This data will be persisted during object destruction
156		*
157		* @param string $resource Name of the file
158		* @param array $metadata Miscellaneous information about resource
159		*/
160		public function setCacheState($resource, array $metadata)
161		{
162		$this->newCacheState[$resource] = $metadata;
163		}
164
165		/**
166		* Automatic destructor saves all new changes into the cache
167		*
168		* This implementation is not thread-safe, so be care
169		*/
170		public function __destruct()
171		{
172		$this->flushCacheState();
173		}
174
175		/**
176		* Flushes the cache state into the file
177		*/
178		public function flushCacheState()
179		{
180		if (!empty($this->newCacheState) && is_writable($this->cacheDir)) {
181		$fullCacheMap = $this->newCacheState + $this->cacheState;
182		$cachePath = substr(var_export($this->cacheDir, true), 1, -1);
183		$rootPath = substr(var_export($this->appDir, true), 1, -1);
184		$cacheData = '<?php return ' . var_export($fullCacheMap, true) . ';';
185		$cacheData = strtr($cacheData, array(
186		'\'' . $cachePath => 'AOP_CACHE_DIR . \'',
187		'\'' . $rootPath => 'AOP_ROOT_DIR . \''
188		));
189		$fullCacheFileName = $this->cacheDir . self::CACHE_FILE_NAME;
190		file_put_contents($fullCacheFileName, $cacheData, LOCK_EX);
191		// For cache files we don't want executable bits by default
192		chmod($fullCacheFileName, $this->fileMode & (~0111));
193
194		if (function_exists('opcache_invalidate')) {
195		opcache_invalidate($fullCacheFileName, true);
196		}
197		$this->cacheState = $this->newCacheState + $this->cacheState;
198		$this->newCacheState = [];
199		}
200		}
201		}
202

goaop / framework

Push — 1.x ( 784bb7...3079dc )

CachePathManager::flushCacheState() B

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