FileCache::set() - Code Metrics - Inspection of "Improvement of classes Config, Controller, Log, Fi..." - tnhfw/tnh-fw - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Push — 1.0.0-dev ( 52e7b8...740ad8 )

by nguereza

created 2020-03-17 20:01 UTC

FileCache::set() A

↳ Parent: FileCache

Complexity

Conditions	4
Paths	5

Size

Total Lines	34
Code Lines	28

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	1	Features	0

Metric	Value
cc	4
eloc	28
nc	5
nop	3
dl	0
loc	34
rs	9.472
c	2
b	1
f	0

<?php
    defined('ROOT_PATH') or exit('Access denied');
    /**
     * TNH Framework
     *
     * A simple PHP framework using HMVC architecture
     *
     * This content is released under the MIT License (MIT)
     *
     * Copyright (c) 2017 TNH Framework
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy
     * of this software and associated documentation files (the "Software"), to deal
     * in the Software without restriction, including without limitation the rights
     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     * copies of the Software, and to permit persons to whom the Software is
     * furnished to do so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     */

    class FileCache extends BaseClass implements CacheInterface {
		
        /**
         * Whether to enable compression of the cache data file.
         * Note: extension zlib must be availabe for this to work
         * @var boolean
         */
        private $compressCacheData = true;

        /**
         * The path of saved file cache
         * @var string
         */
        private $cacheFilePath = null;

        /**
         * Class constructor
         * @param string|null $cacheFilePath the path to save cache data
         */
        public function __construct($cacheFilePath = null) {
            parent::__construct();
            $this->setCacheFilePath($cacheFilePath);
            if (!$this->isSupported()) {
                show_error('The cache for file system is not available. Check the cache directory if is exist or is writable.');
            }
			
            //if Zlib extension is not loaded set compressCacheData to false
            if (!extension_loaded('zlib')) {
                $this->logger->warning('The zlib extension is not loaded set cache compress data to false');
                $this->compressCacheData = false;
            }
        }

        /**
         * This is used to get the cache data using the key
         * 
         * @param  string $key the key to identify the cache data
         * 
         * @return mixed      the cache data if exists else return false
         */
        public function get($key) {
            $this->logger->debug('Getting cache data for key [' . $key . ']');
            $filePath = $this->getFilePath($key);
            if (!file_exists($filePath)) {
                $this->logger->info('No cache file found for the key [' . $key . '], return false');
                return false;
            }
            $this->logger->info('The cache file [' . $filePath . '] for the key [' . $key . '] exists, check if the cache data is valid');
            $data = $this->getCacheFileContent($filePath);
            if ($data === false) {
                $this->logger->error('The cache data for the key [' . $key . '] is not valid, return false');
                // If unserializing somehow didn't work out, we'll delete the file
                unlink($filePath);
                return false;
            }
            if (time() > $data['expire']) {
                $this->logger->info('The cache data for the key [' . $key . '] already expired delete the cache file [' . $filePath . ']');
                // Unlinking when the file was expired
                unlink($filePath);
                return false;
            } 
            $this->logger->info('The cache not yet expire, now return the cache data '
                                . 'for key [' . $key . '], the cache will expire ' 
                                . 'at [' . date('Y-m-d H:i:s', $data['expire']) . ']');
            return $data['data'];
        }


        /**
         * Save data to the cache
         * 
         * @param string  $key  the key to identify this cache data
         * @param mixed  $data the cache data
         * @param integer $ttl  the cache life time
         * 
         * @return boolean true if success otherwise will return false
         */
        public function set($key, $data, $ttl = 0) {
            $expire = time() + $ttl;
            $this->logger->debug('Setting cache data for key [' . $key . '], '
                           . 'time to live [' . $ttl . '], '
                           . 'expire at [' . date('Y-m-d H:i:s', $expire) . ']');
            $filePath = $this->getFilePath($key);
            $handle = fopen($filePath, 'w');
            if (!is_resource($handle)) {
                $this->logger->error('Can not open the file cache '
                                     . '[' . $filePath . '] for the key [' . $key . '], return false');
                return false;
            }
            flock($handle, LOCK_EX); // exclusive lock, will get released when the file is closed
            //Serializing along with the TTL
            $cacheData = serialize(array(
                                    'mtime' => time(),
                                    'expire' => $expire,
                                    'data' => $data,
                                    'ttl' => $ttl
                                    ));	
            if ($this->compressCacheData) {
                $cacheData = gzdeflate($cacheData, 9);
            }	   
            $result = fwrite($handle, $cacheData);
            if (!$result) {
                $this->logger->error('Can not write cache data into file [' . $filePath . '] '
                                    . 'for the key [' . $key . '], return false');
                fclose($handle);
                return false;
            } 
            $this->logger->info('Cache data saved into file [' . $filePath . '] for the key [' . $key . ']');
            fclose($handle);
            chmod($filePath, 0640);
            return true;
        }	


        /**
         * Delete the cache data for given key
         * 
         * @param  string $key the key for cache to be deleted
         * 
         * @return boolean      true if the cache is delete, false if can't delete 
         * the cache or the cache with the given key not exist
         */
        public function delete($key) {
            $this->logger->debug('Deleting of cache data for key [' . $key . ']');
            $filePath = $this->getFilePath($key);
            $this->logger->info('The file path for the key [' . $key . '] is [' . $filePath . ']');
            if (!file_exists($filePath)) {
                $this->logger->info('The cache file does not exists skipping');
                return false;
            } 
            $this->logger->info('Found cache file [' . $filePath . '] remove it');
            return unlink($filePath);
        }
		
        /**
         * Get the cache information for given key
         * 
         * @param  string $key the key for cache to get the information for
         * 
         * @return boolean|array    the cache information. The associative 
         * array and must contains the following information:
         * 'mtime' => creation time of the cache (Unix timestamp),
         * 'expire' => expiration time of the cache (Unix timestamp),
         * 'ttl' => the time to live of the cache in second
         */
        public function getInfo($key) {
            $this->logger->debug('Getting of cache info for key [' . $key . ']');
            $filePath = $this->getFilePath($key);
            $this->logger->info('The file path for the key [' . $key . '] is [' . $filePath . ']');
            if (!file_exists($filePath)) {
                $this->logger->info('This cache file does not exists skipping');
                return false;
            }
            $this->logger->info('Found cache file [' . $filePath . '] check the validity');
            $data = $this->getCacheFileContent($filePath);
            if ($data === false) {
                $this->logger->warning('Can not get the cache data for file [' . $filePath . ']');
                return false;
            }
            $this->logger->info('This cache data is OK check for expire');
            if ($data['expire'] > time()) {
                $this->logger->info('This cache not yet expired return cache informations');
                $info = array(
                    'mtime' => $data['mtime'],
                    'expire' => $data['expire'],
                    'ttl' => $data['ttl']
                    );
                return $info;
            }
            $this->logger->info('This cache already expired return false');
            return false;
        }

        /**
         * Used to delete expired cache data
         * @see  CacheInterface::deleteExpiredCache
         */
        public function deleteExpiredCache() {
            $this->logger->debug('Deleting of expired cache files');
            $list = glob($this->cacheFilePath . '*.cache');
            if (!$list) {
                $this->logger->info('No cache files were found skipping');
                return;
            }
            $this->logger->info('Found [' . count($list) . '] cache files to remove if expired');
            foreach ($list as $file) {
                $this->logger->debug('Processing the cache file [' . $file . ']');
                $data = $this->getCacheFileContent($file);
                if ($data === false) {
                    $this->logger->warning('Can not get cache data for file [' . $file . ']');
                } else if (time() > $data['expire']) {
                    $this->logger->info('The cache data for file [' . $file . '] already expired remove it');
                    unlink($file);
                } else {
                    $this->logger->info('The cache data for file [' . $file . '] not yet expired skip it');
                }
            }
        }	

        /**
         * Remove all file from cache folder
         * @see  CacheInterface::clean
         */
        public function clean() {
            $this->logger->debug('Deleting of all cache files');
            $list = glob($this->cacheFilePath . '*.cache');
            if (!$list) {
                $this->logger->info('No cache files were found skipping');
                return;
            }
            $this->logger->info('Found [' . count($list) . '] cache files to remove');
            foreach ($list as $file) {
                $this->logger->debug('Processing the cache file [' . $file . ']');
                unlink($file);
            }
        }
	
        /**
         * Whether the compression is enabled or not
         * 
         * @return boolean
         */
        public function isCompressCacheData() {
            return $this->compressCacheData;
        }

        /**
         * Set the compression data status
         * Note: this is set to "true" only if zlib extension is loaded and enabled
         * 
         * @param boolean $compressCacheData
         *
         * @return object
         */
        public function setCompressCacheData($status = true) {
            //if zlib extension is not loaded set compressCacheData to false
            if ($status === true && !extension_loaded('zlib')) {
                $this->logger->warning('The zlib extension is not loaded set cache compress data to false');
                $this->compressCacheData = false;
            } else {
                $this->compressCacheData = $status;
            }
            return $this;
        }
		
        /**
         * Check whether the cache feature for the handle is supported
         *
         * @return bool
         */
        public function isSupported() {
            return $this->cacheFilePath 
                    && is_dir($this->cacheFilePath) 
                    && is_writable($this->cacheFilePath);
        }

        /**
         * Set the cache file path used to save the cache data
         * 
         * @param string|null $path the file path if null will use the constant CACHE_PATH
         *
         * @return object the current instance
         */
        public function setCacheFilePath($path = null) {
            if ($path !== null) {
                if (substr($path, -1) != DS) {
                    $path .= DS;
                }
                $this->cacheFilePath = $path;
                return $this;
            }
            $this->cacheFilePath = CACHE_PATH;
            return $this;
        }

        /**
         * Get the cache file content for the given path
         * @param  string $filePath the file path
         * @return boolean|array           the file cache content
         */
        protected function getCacheFileContent($filePath) {
            $data = file_get_contents($filePath);
            if ($this->compressCacheData) {
                $data = gzinflate($data);
            }
            $data = @unserialize($data);
            if (!$data) {
                $this->logger->warning('Can not unserialize the cache data for file [' . $filePath . ']');
                return false;
            }
            return $data;
        }

	
        /**
         * Get the cache file full path for the given key
         *
         * @param string $key the cache item key
         * 
         * @return string the full cache file path for this key
         */
        private function getFilePath($key) {
            return $this->cacheFilePath . md5($key) . '.cache';
        }
    }


1			<?php
2			defined('ROOT_PATH') or exit('Access denied');
3			/**
4			* TNH Framework
5			*
6			* A simple PHP framework using HMVC architecture
7			*
8			* This content is released under the MIT License (MIT)
9			*
10			* Copyright (c) 2017 TNH Framework
11			*
12			* Permission is hereby granted, free of charge, to any person obtaining a copy
13			* of this software and associated documentation files (the "Software"), to deal
14			* in the Software without restriction, including without limitation the rights
15			* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
16			* copies of the Software, and to permit persons to whom the Software is
17			* furnished to do so, subject to the following conditions:
18			*
19			* The above copyright notice and this permission notice shall be included in all
20			* copies or substantial portions of the Software.
21			*
22			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
25			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28			* SOFTWARE.
29			*/
30
31			class FileCache extends BaseClass implements CacheInterface {
32
33			/**
34			* Whether to enable compression of the cache data file.
35			* Note: extension zlib must be availabe for this to work
36			* @var boolean
37			*/
38			private $compressCacheData = true;
39
40			/**
41			* The path of saved file cache
42			* @var string
43			*/
44			private $cacheFilePath = null;
45
46			/**
47			* Class constructor
48			* @param string\|null $cacheFilePath the path to save cache data
49			*/
50			public function __construct($cacheFilePath = null) {
51			parent::__construct();
52			$this->setCacheFilePath($cacheFilePath);
53			if (!$this->isSupported()) {
54			show_error('The cache for file system is not available. Check the cache directory if is exist or is writable.');
55			}
56
57			//if Zlib extension is not loaded set compressCacheData to false
58			if (!extension_loaded('zlib')) {
59			$this->logger->warning('The zlib extension is not loaded set cache compress data to false');
60			$this->compressCacheData = false;
61			}
62			}
63
64			/**
65			* This is used to get the cache data using the key
66			*
67			* @param string $key the key to identify the cache data
68			*
69			* @return mixed the cache data if exists else return false
70			*/
71			public function get($key) {
72			$this->logger->debug('Getting cache data for key [' . $key . ']');
73			$filePath = $this->getFilePath($key);
74			if (!file_exists($filePath)) {
75			$this->logger->info('No cache file found for the key [' . $key . '], return false');
76			return false;
77			}
78			$this->logger->info('The cache file [' . $filePath . '] for the key [' . $key . '] exists, check if the cache data is valid');
79			$data = $this->getCacheFileContent($filePath);
80			if ($data === false) {
81			$this->logger->error('The cache data for the key [' . $key . '] is not valid, return false');
82			// If unserializing somehow didn't work out, we'll delete the file
83			unlink($filePath);
84			return false;
85			}
86			if (time() > $data['expire']) {
87			$this->logger->info('The cache data for the key [' . $key . '] already expired delete the cache file [' . $filePath . ']');
88			// Unlinking when the file was expired
89			unlink($filePath);
90			return false;
91			}
92			$this->logger->info('The cache not yet expire, now return the cache data '
93			. 'for key [' . $key . '], the cache will expire '
94			. 'at [' . date('Y-m-d H:i:s', $data['expire']) . ']');
95			return $data['data'];
96			}
97
98
99			/**
100			* Save data to the cache
101			*
102			* @param string $key the key to identify this cache data
103			* @param mixed $data the cache data
104			* @param integer $ttl the cache life time
105			*
106			* @return boolean true if success otherwise will return false
107			*/
108			public function set($key, $data, $ttl = 0) {
109			$expire = time() + $ttl;
110			$this->logger->debug('Setting cache data for key [' . $key . '], '
111			. 'time to live [' . $ttl . '], '
112			. 'expire at [' . date('Y-m-d H:i:s', $expire) . ']');
113			$filePath = $this->getFilePath($key);
114			$handle = fopen($filePath, 'w');
115			if (!is_resource($handle)) {
116			$this->logger->error('Can not open the file cache '
117			. '[' . $filePath . '] for the key [' . $key . '], return false');
118			return false;
119			}
120			flock($handle, LOCK_EX); // exclusive lock, will get released when the file is closed
121			//Serializing along with the TTL
122			$cacheData = serialize(array(
123			'mtime' => time(),
124			'expire' => $expire,
125			'data' => $data,
126			'ttl' => $ttl
127			));
128			if ($this->compressCacheData) {
129			$cacheData = gzdeflate($cacheData, 9);
130			}
131			$result = fwrite($handle, $cacheData);
132			if (!$result) {
133			$this->logger->error('Can not write cache data into file [' . $filePath . '] '
134			. 'for the key [' . $key . '], return false');
135			fclose($handle);
136			return false;
137			}
138			$this->logger->info('Cache data saved into file [' . $filePath . '] for the key [' . $key . ']');
139			fclose($handle);
140			chmod($filePath, 0640);
141			return true;
142			}
143
144
145			/**
146			* Delete the cache data for given key
147			*
148			* @param string $key the key for cache to be deleted
149			*
150			* @return boolean true if the cache is delete, false if can't delete
151			* the cache or the cache with the given key not exist
152			*/
153			public function delete($key) {
154			$this->logger->debug('Deleting of cache data for key [' . $key . ']');
155			$filePath = $this->getFilePath($key);
156			$this->logger->info('The file path for the key [' . $key . '] is [' . $filePath . ']');
157			if (!file_exists($filePath)) {
158			$this->logger->info('The cache file does not exists skipping');
159			return false;
160			}
161			$this->logger->info('Found cache file [' . $filePath . '] remove it');
162			return unlink($filePath);
163			}
164
165			/**
166			* Get the cache information for given key
167			*
168			* @param string $key the key for cache to get the information for
169			*
170			* @return boolean\|array the cache information. The associative
171			* array and must contains the following information:
172			* 'mtime' => creation time of the cache (Unix timestamp),
173			* 'expire' => expiration time of the cache (Unix timestamp),
174			* 'ttl' => the time to live of the cache in second
175			*/
176			public function getInfo($key) {
177			$this->logger->debug('Getting of cache info for key [' . $key . ']');
178			$filePath = $this->getFilePath($key);
179			$this->logger->info('The file path for the key [' . $key . '] is [' . $filePath . ']');
180			if (!file_exists($filePath)) {
181			$this->logger->info('This cache file does not exists skipping');
182			return false;
183			}
184			$this->logger->info('Found cache file [' . $filePath . '] check the validity');
185			$data = $this->getCacheFileContent($filePath);
186			if ($data === false) {
187			$this->logger->warning('Can not get the cache data for file [' . $filePath . ']');
188			return false;
189			}
190			$this->logger->info('This cache data is OK check for expire');
191			if ($data['expire'] > time()) {
192			$this->logger->info('This cache not yet expired return cache informations');
193			$info = array(
194			'mtime' => $data['mtime'],
195			'expire' => $data['expire'],
196			'ttl' => $data['ttl']
197			);
198			return $info;
199			}
200			$this->logger->info('This cache already expired return false');
201			return false;
202			}
203
204			/**
205			* Used to delete expired cache data
206			* @see CacheInterface::deleteExpiredCache
207			*/
208			public function deleteExpiredCache() {
209			$this->logger->debug('Deleting of expired cache files');
210			$list = glob($this->cacheFilePath . '*.cache');
211			if (!$list) {
212			$this->logger->info('No cache files were found skipping');
213			return;
214			}
215			$this->logger->info('Found [' . count($list) . '] cache files to remove if expired');
216			foreach ($list as $file) {
217			$this->logger->debug('Processing the cache file [' . $file . ']');
218			$data = $this->getCacheFileContent($file);
219			if ($data === false) {
220			$this->logger->warning('Can not get cache data for file [' . $file . ']');
221			} else if (time() > $data['expire']) {
222			$this->logger->info('The cache data for file [' . $file . '] already expired remove it');
223			unlink($file);
224			} else {
225			$this->logger->info('The cache data for file [' . $file . '] not yet expired skip it');
226			}
227			}
228			}
229
230			/**
231			* Remove all file from cache folder
232			* @see CacheInterface::clean
233			*/
234			public function clean() {
235			$this->logger->debug('Deleting of all cache files');
236			$list = glob($this->cacheFilePath . '*.cache');
237			if (!$list) {
238			$this->logger->info('No cache files were found skipping');
239			return;
240			}
241			$this->logger->info('Found [' . count($list) . '] cache files to remove');
242			foreach ($list as $file) {
243			$this->logger->debug('Processing the cache file [' . $file . ']');
244			unlink($file);
245			}
246			}
247
248			/**
249			* Whether the compression is enabled or not
250			*
251			* @return boolean
252			*/
253			public function isCompressCacheData() {
254			return $this->compressCacheData;
255			}
256
257			/**
258			* Set the compression data status
259			* Note: this is set to "true" only if zlib extension is loaded and enabled
260			*
261			* @param boolean $compressCacheData
262			*
263			* @return object
264			*/
265			public function setCompressCacheData($status = true) {
266			//if zlib extension is not loaded set compressCacheData to false
267			if ($status === true && !extension_loaded('zlib')) {
268			$this->logger->warning('The zlib extension is not loaded set cache compress data to false');
269			$this->compressCacheData = false;
270			} else {
271			$this->compressCacheData = $status;
272			}
273			return $this;
274			}
275
276			/**
277			* Check whether the cache feature for the handle is supported
278			*
279			* @return bool
280			*/
281			public function isSupported() {
282			return $this->cacheFilePath
283			&& is_dir($this->cacheFilePath)
284			&& is_writable($this->cacheFilePath);
285			}
286
287			/**
288			* Set the cache file path used to save the cache data
289			*
290			* @param string\|null $path the file path if null will use the constant CACHE_PATH
291			*
292			* @return object the current instance
293			*/
294			public function setCacheFilePath($path = null) {
295			if ($path !== null) {
296			if (substr($path, -1) != DS) {
297			$path .= DS;
298			}
299			$this->cacheFilePath = $path;
300			return $this;
301			}
302			$this->cacheFilePath = CACHE_PATH;
303			return $this;
304			}
305
306			/**
307			* Get the cache file content for the given path
308			* @param string $filePath the file path
309			* @return boolean\|array the file cache content
310			*/
311			protected function getCacheFileContent($filePath) {
312			$data = file_get_contents($filePath);
313			if ($this->compressCacheData) {
314			$data = gzinflate($data);
315			}
316			$data = @unserialize($data);
317			if (!$data) {
318			$this->logger->warning('Can not unserialize the cache data for file [' . $filePath . ']');
319			return false;
320			}
321			return $data;
322			}
323
324
325			/**
326			* Get the cache file full path for the given key
327			*
328			* @param string $key the cache item key
329			*
330			* @return string the full cache file path for this key
331			*/
332			private function getFilePath($key) {
333			return $this->cacheFilePath . md5($key) . '.cache';
334			}
335			}
336

tnhfw / tnh-fw

Push — 1.0.0-dev ( 52e7b8...740ad8 )

FileCache::set() A

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Duplication

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