File::clear() - Code Metrics - Inspection of "Further test restructuring" - joomla-framework/cache - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.0-dev ( d70707...e50301 )

by Michael

created 2016-04-01 15:14 UTC

File::clear() A

↳ Parent: File

Complexity

Conditions	3
Paths	3

Size

Total Lines	23
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	3

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
c	3
b	0
f	0
dl	0
loc	23
ccs	15
cts	15
cp	1
rs	9.0856
cc	3
eloc	11
nc	3
nop	0
crap	3

<?php
/**
 * Part of the Joomla Framework Cache Package
 *
 * @copyright  Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Cache;

use Joomla\Cache\Exception\RuntimeException;
use Joomla\Cache\Item\HasExpirationDateInterface;
use Psr\Cache\CacheItemInterface;
use Joomla\Cache\Exception\InvalidArgumentException;
use Joomla\Cache\Item\Item;

/**
 * Filesystem cache driver for the Joomla Framework.
 *
 * Supported options:
 * - file.locking (boolean) :
 * - file.path              : The path for cache files.
 *
 * @since  1.0
 */
class File extends Cache
{
	/**
	 * Constructor.
	 *
	 * @param   mixed  $options  An options array, or an object that implements \ArrayAccess
	 *
	 * @since   1.0
	 * @throws  \RuntimeException
	 */
	public function __construct($options = array())
	{
		if (!isset($options['file.locking']))
		{
			$options['file.locking'] = true;
		}

		if (!isset($options['file.path']))
		{
			throw new InvalidArgumentException('The file.path option must be set.');
		}

		$this->checkFilePath($options['file.path']);

		parent::__construct($options);
	}

	/**
	 * This will wipe out the entire cache's keys....
	 *
	 * @return  boolean  The result of the clear operation.
	 *
	 * @since   1.0
	 */
	public function clear()
	{
		$filePath = $this->options['file.path'];
		$this->checkFilePath($filePath);

		$iterator = new \RegexIterator(
			new \RecursiveIteratorIterator(
				new \RecursiveDirectoryIterator($filePath)
			),
			'/\.data$/i'
		);

		/* @var  \RecursiveDirectoryIterator  $file */
		foreach ($iterator as $file)
		{
			if ($file->isFile())
			{
				@unlink($file->getRealPath());
// For example instead of
@mkdir($dir);

// Better use
if (@mkdir($dir) === false) {
    throw new \RuntimeException('The directory '.$dir.' could not be created.');
}
			}
		}

		return true;
	}

	/**
	 * Method to get a storage entry value from a key.
	 *
	 * @param   string  $key  The storage entry identifier.
	 *
	 * @return  CacheItemInterface
	 *
	 * @since   1.0
	 * @throws  \RuntimeException
	 */
	public function getItem($key)
	{
		if (!$this->hasItem($key))
		{
			return new Item($key);
		}

		$resource = @fopen($this->fetchStreamUri($key), 'rb');

		if (!$resource)
		{
			throw new RuntimeException(sprintf('Unable to fetch cache entry for %s.  Connot open the resource.', $key));
		}

		// If locking is enabled get a shared lock for reading on the resource.
		if ($this->options['file.locking'] && !flock($resource, LOCK_SH))

		{
			throw new RuntimeException(sprintf('Unable to fetch cache entry for %s.  Connot obtain a lock.', $key));
		}

		$data = stream_get_contents($resource);

		// If locking is enabled release the lock on the resource.
		if ($this->options['file.locking'] && !flock($resource, LOCK_UN))

		{
			throw new RuntimeException(sprintf('Unable to fetch cache entry for %s.  Connot release the lock.', $key));
		}

		fclose($resource);

		$item = new Item($key);
		$information = unserialize($data);

		// If the cached data has expired remove it and return.
		if ($information[1] !== null && time() > $information[1])
		{
			if (!$this->deleteItem($key))
			{
				throw new RuntimeException(sprintf('Unable to clean expired cache entry for %s.', $key), null);
			}

			return $item;
		}

		$item->set($information[0]);

		return $item;
	}

	/**
	 * Method to remove a storage entry for a key.
	 *
	 * @param   string  $key  The storage entry identifier.
	 *
	 * @return  boolean  True on success
	 *
	 * @since   1.0
	 */
	public function deleteItem($key)
	{
		if ($this->hasItem($key))
		{
			return (bool) @unlink($this->fetchStreamUri($key));
		}

		// If the item doesn't exist, no error
		return true;
	}

	/**
	 * Persists a cache item immediately.
	 *
	 * @param   CacheItemInterface  $item  The cache item to save.
	 *
	 * @return  bool  True if the item was successfully persisted. False if there was an error.
	 */
	public function save(CacheItemInterface $item)
	{
		$fileName = $this->fetchStreamUri($item->getKey());
		$filePath = pathinfo($fileName, PATHINFO_DIRNAME);

		if (!is_dir($filePath))
		{
			mkdir($filePath, 0770, true);
		}

		if ($item instanceof HasExpirationDateInterface)
		{
			$contents = serialize(array($item->get(), time() + $this->convertItemExpiryToSeconds($item)));
		}
		else
		{
			$contents = serialize(array($item->get(), null));
		}

		$success = (bool) file_put_contents(
			$fileName,
			$contents,
			($this->options['file.locking'] ? LOCK_EX : null)
		);

		return $success;
	}

	/**
	 * Method to determine whether a storage entry has been set for a key.
	 *
	 * @param   string  $key  The storage entry identifier.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 */
	public function hasItem($key)
	{
		return is_file($this->fetchStreamUri($key));
	}

	/**
	 * Test to see if the CacheItemPoolInterface is available
	 *
	 * @return  boolean  True on success, false otherwise
	 *
	 * @since   __DEPLOY_VERSION__
	 */
	public static function isSupported()
	{
		return true;
	}

	/**
	 * Check that the file path is a directory and writable.
	 *
	 * @param   string  $filePath  A file path.
	 *
	 * @return  boolean  The method will always return true, if it returns.
	 *
	 * @since   1.0
	 * @throws  \RuntimeException if the file path is invalid.
	 */
	private function checkFilePath($filePath)
	{
		if (!is_dir($filePath))
		{
			throw new RuntimeException(sprintf('The base cache path `%s` does not exist.', $filePath));
		}
		elseif (!is_writable($filePath))
		{
			throw new RuntimeException(sprintf('The base cache path `%s` is not writable.', $filePath));
		}

		return true;
	}

	/**
	 * Get the full stream URI for the cache entry.
	 *
	 * @param   string  $key  The storage entry identifier.
	 *
	 * @return  string  The full stream URI for the cache entry.
	 *
	 * @since   1.0
	 * @throws  \RuntimeException if the cache path is invalid.
	 */
	private function fetchStreamUri($key)
	{
		$filePath = $this->options['file.path'];
		$this->checkFilePath($filePath);

		return sprintf(
			'%s/~%s/%s.data',
			$filePath,
			substr(hash('md5', $key), 0, 4),
			hash('sha1', $key)
		);
	}
}


1			<?php
2			/**
3			* Part of the Joomla Framework Cache Package
4			*
5			* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
6			* @license GNU General Public License version 2 or later; see LICENSE
7			*/
8
9			namespace Joomla\Cache;
10
11			use Joomla\Cache\Exception\RuntimeException;
12			use Joomla\Cache\Item\HasExpirationDateInterface;
13			use Psr\Cache\CacheItemInterface;
14			use Joomla\Cache\Exception\InvalidArgumentException;
15			use Joomla\Cache\Item\Item;
16
17			/**
18			* Filesystem cache driver for the Joomla Framework.
19			*
20			* Supported options:
21			* - file.locking (boolean) :
22			* - file.path : The path for cache files.
23			*
24			* @since 1.0
25			*/
26			class File extends Cache
27			{
28			/**
29			* Constructor.
30			*
31			* @param mixed $options An options array, or an object that implements \ArrayAccess
32			*
33			* @since 1.0
34			* @throws \RuntimeException
35			*/
36	10		public function __construct($options = array())
37			{
38	10		if (!isset($options['file.locking']))
39	10		{
40	10		$options['file.locking'] = true;
41	10		}
42
43	10		if (!isset($options['file.path']))
44	10		{
45			throw new InvalidArgumentException('The file.path option must be set.');
46			}
47
48	10		$this->checkFilePath($options['file.path']);
49
50	10		parent::__construct($options);
51	10		}
52
53			/**
54			* This will wipe out the entire cache's keys....
55			*
56			* @return boolean The result of the clear operation.
57			*
58			* @since 1.0
59			*/
60	10		public function clear()
61			{
62	10		$filePath = $this->options['file.path'];
63	10		$this->checkFilePath($filePath);
64
65	10		$iterator = new \RegexIterator(
66	10		new \RecursiveIteratorIterator(
67	10		new \RecursiveDirectoryIterator($filePath)
68	10		),
69			'/\.data$/i'
70	10		);
71
72			/* @var \RecursiveDirectoryIterator $file */
73	10		foreach ($iterator as $file)
74			{
75	6		if ($file->isFile())
76	6		{
77	6		@unlink($file->getRealPath());
			0 ignored issues – show Security Best Practice introduced 2016-03-31 20:13 UTC by Report Bug Copy Issue Report It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended. If you suppress an error, we recommend checking for the error condition explicitly: // For example instead of @mkdir($dir); // Better use if (@mkdir($dir) === false) { throw new \RuntimeException('The directory '.$dir.' could not be created.'); } Loading history...
78	6		}
79	10		}
80
81	10		return true;
82			}
83
84			/**
85			* Method to get a storage entry value from a key.
86			*
87			* @param string $key The storage entry identifier.
88			*
89			* @return CacheItemInterface
90			*
91			* @since 1.0
92			* @throws \RuntimeException
93			*/
94	5		public function getItem($key)
95			{
96	5		if (!$this->hasItem($key))
97	5		{
98	3		return new Item($key);
99			}
100
101	5		$resource = @fopen($this->fetchStreamUri($key), 'rb');
102
103	5		if (!$resource)
104	5		{
105			throw new RuntimeException(sprintf('Unable to fetch cache entry for %s. Connot open the resource.', $key));
106			}
107
108			// If locking is enabled get a shared lock for reading on the resource.
109	5	View Code Duplication	if ($this->options['file.locking'] && !flock($resource, LOCK_SH))
			0 ignored issues – show Duplication introduced 2016-03-31 20:13 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
110	5		{
111			throw new RuntimeException(sprintf('Unable to fetch cache entry for %s. Connot obtain a lock.', $key));
112			}
113
114	5		$data = stream_get_contents($resource);
115
116			// If locking is enabled release the lock on the resource.
117	5	View Code Duplication	if ($this->options['file.locking'] && !flock($resource, LOCK_UN))
			0 ignored issues – show Duplication introduced 2016-03-31 20:13 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
118	5		{
119			throw new RuntimeException(sprintf('Unable to fetch cache entry for %s. Connot release the lock.', $key));
120			}
121
122	5		fclose($resource);
123
124	5		$item = new Item($key);
125	5		$information = unserialize($data);
126
127			// If the cached data has expired remove it and return.
128	5		if ($information[1] !== null && time() > $information[1])
129	5		{
130	1		if (!$this->deleteItem($key))
131	1		{
132			throw new RuntimeException(sprintf('Unable to clean expired cache entry for %s.', $key), null);
133			}
134
135	1		return $item;
136			}
137
138	4		$item->set($information[0]);
139
140	4		return $item;
141			}
142
143			/**
144			* Method to remove a storage entry for a key.
145			*
146			* @param string $key The storage entry identifier.
147			*
148			* @return boolean True on success
149			*
150			* @since 1.0
151			*/
152	3		public function deleteItem($key)
153			{
154	3		if ($this->hasItem($key))
155	3		{
156	3		return (bool) @unlink($this->fetchStreamUri($key));
157			}
158
159			// If the item doesn't exist, no error
160	2		return true;
161			}
162
163			/**
164			* Persists a cache item immediately.
165			*
166			* @param CacheItemInterface $item The cache item to save.
167			*
168			* @return bool True if the item was successfully persisted. False if there was an error.
169			*/
170	8		public function save(CacheItemInterface $item)
171			{
172	8		$fileName = $this->fetchStreamUri($item->getKey());
173	8		$filePath = pathinfo($fileName, PATHINFO_DIRNAME);
174
175	8		if (!is_dir($filePath))
176	8		{
177	6		mkdir($filePath, 0770, true);
178	6		}
179
180	8		if ($item instanceof HasExpirationDateInterface)
181	8		{
182	1		$contents = serialize(array($item->get(), time() + $this->convertItemExpiryToSeconds($item)));
183	1		}
184			else
185			{
186	7		$contents = serialize(array($item->get(), null));
187			}
188
189	8		$success = (bool) file_put_contents(
190	8		$fileName,
191	8		$contents,
192	8		($this->options['file.locking'] ? LOCK_EX : null)
193	8		);
194
195	8		return $success;
196			}
197
198			/**
199			* Method to determine whether a storage entry has been set for a key.
200			*
201			* @param string $key The storage entry identifier.
202			*
203			* @return boolean
204			*
205			* @since 1.0
206			*/
207	8		public function hasItem($key)
208			{
209	8		return is_file($this->fetchStreamUri($key));
210			}
211
212			/**
213			* Test to see if the CacheItemPoolInterface is available
214			*
215			* @return boolean True on success, false otherwise
216			*
217			* @since __DEPLOY_VERSION__
218			*/
219			public static function isSupported()
220			{
221			return true;
222			}
223
224			/**
225			* Check that the file path is a directory and writable.
226			*
227			* @param string $filePath A file path.
228			*
229			* @return boolean The method will always return true, if it returns.
230			*
231			* @since 1.0
232			* @throws \RuntimeException if the file path is invalid.
233			*/
234	10		private function checkFilePath($filePath)
235			{
236	10		if (!is_dir($filePath))
237	10		{
238			throw new RuntimeException(sprintf('The base cache path `%s` does not exist.', $filePath));
239			}
240	10		elseif (!is_writable($filePath))
241			{
242			throw new RuntimeException(sprintf('The base cache path `%s` is not writable.', $filePath));
243			}
244
245	10		return true;
246			}
247
248			/**
249			* Get the full stream URI for the cache entry.
250			*
251			* @param string $key The storage entry identifier.
252			*
253			* @return string The full stream URI for the cache entry.
254			*
255			* @since 1.0
256			* @throws \RuntimeException if the cache path is invalid.
257			*/
258	8		private function fetchStreamUri($key)
259			{
260	8		$filePath = $this->options['file.path'];
261	8		$this->checkFilePath($filePath);
262
263	8		return sprintf(
264	8		'%s/~%s/%s.data',
265	8		$filePath,
266	8		substr(hash('md5', $key), 0, 4),
267	8		hash('sha1', $key)
268	8		);
269			}
270			}
271

joomla-framework / cache

Push — 2.0-dev ( d70707...e50301 )

File::clear() A

Complexity

Size

Duplication

Code Coverage

Importance

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