Backup::getOldestFileToDelete() - Code Metrics - imagecms/ImageCMS - Measure and Improve Code Quality continuously with Scrutinizer

Backup::getOldestFileToDelete() B
last analyzed 2019-09-03 12:36 UTC

↳ Parent: Backup

Complexity

Conditions	7
Paths	12

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	7
nc	12
nop	0
dl	0
loc	26
rs	8.5706
c	0
b	0
f	0

<?php

namespace libraries;

/**
 * Creating DB backups
 * getting backup files
 * deleting old backup-files
 *
 * @author kolia
 */
class Backup
{

    /**
     *
     * @var Backup
     */
    protected static $instance;

    /**
     * Backup directory
     * @var string
     */
    protected $directory = BACKUPFOLDER;

    /**
     * Aviable extentions
     * @var array
     */
    protected $ext = [
                      'sql',
                      'zip',
                      'gzip',
                     ];

    /**
     * Patterns for backup file names
     * key - regex pattern, value - boolean (allow delete)
     * @var array
     */
    protected $filePatterns = [
        // для файлів із авт. підбором імені.
                               '/^[a-zA-Z]{1,10}_[0-9]{2}-[0-9]{2}-[0-9]{4}_[0-9]{2}.[0-9]{2}.[0-9]{2}.(zip|gzip|sql|txt)$/' => [
                                                                                                                                 'allowDelete' => TRUE,
                                                                                                                                 'type'        => 'default',
                                                                                                                                ],
                               // для старіших бекапів із обновлення
                               '/^[0-9]{10}.(zip|gzip|sql|txt)$/'                                                            => [
                                                                                                                                 'allowDelete' => TRUE,
                                                                                                                                 'type'        => 'update',
                                                                                                                                ],
                               // для новіших бекапів із обновлення
                               '/^backup.(zip|gzip|sql|txt)$/'                                                               => [
                                                                                                                                 'allowDelete' => FALSE,
                                                                                                                                 'type'        => 'update',
                                                                                                                                ],
                              ];

    /**
     *
     * @var CodeIgniter
     */
    protected $ci;

    /**
     *
     * @var string
     */
    public $error;

    public function __construct() {
        $this->ci = &get_instance();
        $this->ci->load->dbutil();
    }

    /**
     *
     * @return Backup
     */
    public static function create() {
        (null !== self::$instance) OR self::$instance = new self();
        return self::$instance;
    }

    /**
     * Setting the backup value into the DB
     * @param string $key
     * @param string|int $value
     */
    public function setSetting($key, $value) {
        $settings = $this->getSetting();
        if (!is_array($settings)) { //no settings yet
            $settings = [];
        }
        $settings[$key] = $value;
        return $this->ci->db->update('settings', ['backup' => serialize($settings)]);
    }

    /**
     * Getting the backup value from the DB
     * @param string
     * @param string $key
     * @return mixed settings array or specified value
     */
    public function getSetting($key = NULL) {
        $result = $this->ci->db->select('backup')->get('settings');
        if ($result) {
            $row = $result->result_array();
        } else {
            $row = [];
        }

        $backupSettings = unserialize($row[0]['backup']);
        if (!is_array($backupSettings)) { // no settings yet
            return NULL;
        }
        if ($key != null) {
            if (!array_key_exists($key, $backupSettings)) {
                return NULL;
            }
            return $backupSettings[$key];
        }
        return $backupSettings;
    }

    /**
     * Creating the backup file
     * @param string $ext extention (txt|zip|gzip)
     * @param string $prefix
     * @param bool|string $fullName (optional) filename
     * @param array $params
     * @return false|string filename|FALSE
     */
    public function createBackup($ext, $prefix = NULL, $fullName = FALSE, $params = []) {

        if (is_really_writable($this->directory)) {
            if ($prefix == null) {
                $prefix = 'sql';
            }
            if ($fullName === TRUE) {
                $fileName = $prefix;
            } else {
                $fileName = $prefix . '_' . date('d-m-Y_H.i.s');
            }

            $params = [
                       'format' => $ext == 'sql' ? 'txt' : $ext,
                      ];

            $currentDbInstance = $this->ci->db;

            $this->initBackupDB();

            $backup = & $this->ci->dbutil->backup($params);

            $this->ci->db = $currentDbInstance;

            if (write_file($this->directory . '/' . $fileName . '.' . $ext, $backup)) {
                return $this->directory . '/' . $fileName . '.' . $ext;
            }
            $this->error = 'Невозможно создать файл, проверте папку ' . BACKUPFOLDER . ' на возможность записи';
            return FALSE;
        } else {
            $this->error = 'Невозможно создать снимок базы, проверте папку ' . BACKUPFOLDER . ' на возможность записи';
            return FALSE;
        }
    }

    /**
     * Init DB for backup with msql driver
     */
    private function initBackupDB() {
        // this is just all config keys
        $configNames = [
                        'hostname',
                        'username',
                        'password',
                        'database',
                        'dbdriver',
                        'dbprefix',
                        'pconnect',
                        'db_debug',
                        'cache_on',
                        'cachedir',
                        'char_set',
                        'dbcollat',
                        'swap_pre',
                        'autoinit',
                        'stricton',
                       ];

        $config = [];
        foreach ($configNames as $key) {
            $config[$key] = $key == 'dbdriver' ? 'mysql' : $this->ci->db->$key;
        }

        $this->ci->db = $this->ci->load->database($config, TRUE);
        $this->ci->load->dbutil();
    }

    /**
     *
     * @return boolean

     */
    public function deleteOldFiles() {
        $term = $this->getSetting('backup_term');
        $maxSize = ($this->getSetting('backup_maxsize') * 1024 * 1024);
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

        $maxSize = 5 * 1024 * 1024;
        // if time of file will be lower then delete
        $time = time() - (60 * 60 * 24 * 30.5 * $term);

        $files = $this->backupFiles();
        // get summary backup size
        $size = 0;
        foreach ($files as $file) {
            $size += $file['size'];
        }

        // start deleting if overload more then max size
        if ($size > $maxSize) {
            $deleteSize = $size - $maxSize;
            $deleteEdOnSize = 0;
            $filesCount = 0;
            do {
                $fileToDelete = $this->getOldestFileToDelete();
                if ($fileToDelete == FALSE) { // if FALSE then no more files to delete
                    break;
                }
                if ($fileToDelete['timeUpdate'] > $time) { // check if not overrun max date
                    break;
                }
                $filesCount++;
                $deleteEdOnSize += $fileToDelete['size'];
                unlink($this->directory . '/' . $fileToDelete['filename']);
            } while ($deleteEdOnSize < $deleteSize);

            return [
                    'count' => $filesCount,
                    'size'  => $deleteEdOnSize,
                   ];
        }
        return FALSE;
    }

    /**
     *
     * @return boolean
     */
    public function getOldestFileToDelete() {
        $files_ = $this->backupFiles();
        // getting only files that allow to delete by pattern
        $files = [];
        foreach ($files_ as $file) {
            if ($this->checkFileName($file['filename'], 'allowDelete') && $file['locked'] != 1) {
                $files[] = $file;
            }
        }

        if (!count($files) > 0) {
            return FALSE;
        }

        $minKey = 0;
        $minTime = $files[0]['timeUpdate'];

        $countFiles = count($files);
        for ($i = 1; $i < $countFiles; $i++) {
            if ($minTime > $files[$i]['timeUpdate']) {
                $minTime = $files[$i]['timeUpdate'];
                $minKey = $i;
            }
        }
        return $files[$minKey];
    }

    /**
     * Getting list of backup files
     * @return array
     */
    public function backupFiles() {
        $lockedFiles = $this->getSetting('lockedFiles');
        if (!is_array($lockedFiles)) {
            $lockedFiles = [];
        }
        $files = [];
        if ($dir = opendir($this->directory)) {
            while (FALSE !== ($fileName = readdir($dir))) {
                if ($fileName != '.' & $fileName !== '..') {
// Returns always int(0).
return 0 === $foo & 4;
return (0 === $foo) & 4;

// More likely intended return: true/false
return 0 === ($foo & 4);
                    if (TRUE === $this->checkFileName($fileName)) {
                        $file = [
                                 'filename'    => $fileName,
                                 'allowDelete' => $this->checkFileName($fileName, 'allowDelete') == TRUE ? 1 : 0,
                                 'type'        => $this->checkFileName($fileName, 'type'),
                                 'ext'         => pathinfo($fileName, PATHINFO_EXTENSION),
                                 'size'        => filesize($this->directory . '/' . $fileName),
                                 'timeUpdate'  => filemtime($this->directory . '/' . $fileName),
                                ];
                        if ($file['type'] == 'default') {
                            $prefIndex = strpos($fileName, '_');
                            $file['prefix'] = substr($fileName, 0, $prefIndex);
                        } else {
                            $file['prefix'] = 'update';
                        }
                        if (in_array($fileName, $lockedFiles)) {
                            $file['locked'] = 1;
                        } else {
                            $file['locked'] = 0;
                        }
                        $files[] = $file;
                    }
                }
            }
            closedir($dir);
        }

        foreach ($files as $key => $row) {
            $backaps[$key] = $row['timeUpdate'];
foreach ($collection as $item) {
    $myArray['foo'] = $item->getFoo();

    if ($item->hasBar()) {
        $myArray['bar'] = $item->getBar();
    }

    // do something with $myArray
}
        }

        array_multisort($backaps, SORT_DESC, $files);

        return $files;
    }

    /**
     * Checking file name by pattern
     * @param string $fileName
     * @param boolean|string $returnValue
     * @return boolean|string
     */
    protected function checkFileName($fileName, $returnValue = FALSE) {
        foreach ($this->filePatterns as $pattern => $params) {
            if (preg_match($pattern, $fileName)) {
                return $returnValue !== FALSE ? $params[$returnValue] : TRUE;
            }
        }
        return FALSE;
    }

    /**
     * Deleting backup file
     * @param string $file
     * @return boolean true on success, false on error
     */
    public function deleteFile($file) {
        if (FALSE === $this->checkFileName($file, 'allowDelete')) {
            return FALSE;
        }
        if (file_exists($this->directory . '/' . $file)) {
            return unlink($this->directory . '/' . $file);
        }
        return FALSE;
    }

}

1			<?php
2
3			namespace libraries;
4
5			/**
6			* Creating DB backups
7			* getting backup files
8			* deleting old backup-files
9			*
10			* @author kolia
11			*/
12			class Backup
13			{
14
15			/**
16			*
17			* @var Backup
18			*/
19			protected static $instance;
20
21			/**
22			* Backup directory
23			* @var string
24			*/
25			protected $directory = BACKUPFOLDER;
26
27			/**
28			* Aviable extentions
29			* @var array
30			*/
31			protected $ext = [
32			'sql',
33			'zip',
34			'gzip',
35			];
36
37			/**
38			* Patterns for backup file names
39			* key - regex pattern, value - boolean (allow delete)
40			* @var array
41			*/
42			protected $filePatterns = [
43			// для файлів із авт. підбором імені.
44			'/^[a-zA-Z]{1,10}_[0-9]{2}-[0-9]{2}-[0-9]{4}_[0-9]{2}.[0-9]{2}.[0-9]{2}.(zip\|gzip\|sql\|txt)$/' => [
45			'allowDelete' => TRUE,
46			'type' => 'default',
47			],
48			// для старіших бекапів із обновлення
49			'/^[0-9]{10}.(zip\|gzip\|sql\|txt)$/' => [
50			'allowDelete' => TRUE,
51			'type' => 'update',
52			],
53			// для новіших бекапів із обновлення
54			'/^backup.(zip\|gzip\|sql\|txt)$/' => [
55			'allowDelete' => FALSE,
56			'type' => 'update',
57			],
58			];
59
60			/**
61			*
62			* @var CodeIgniter
63			*/
64			protected $ci;
65
66			/**
67			*
68			* @var string
69			*/
70			public $error;
71
72			public function __construct() {
73			$this->ci = &get_instance();
74			$this->ci->load->dbutil();
75			}
76
77			/**
78			*
79			* @return Backup
80			*/
81			public static function create() {
82			(null !== self::$instance) OR self::$instance = new self();
83			return self::$instance;
84			}
85
86			/**
87			* Setting the backup value into the DB
88			* @param string $key
89			* @param string\|int $value
90			*/
91			public function setSetting($key, $value) {
92			$settings = $this->getSetting();
93			if (!is_array($settings)) { //no settings yet
94			$settings = [];
95			}
96			$settings[$key] = $value;
97			return $this->ci->db->update('settings', ['backup' => serialize($settings)]);
98			}
99
100			/**
101			* Getting the backup value from the DB
102			* @param string
103			* @param string $key
104			* @return mixed settings array or specified value
105			*/
106			public function getSetting($key = NULL) {
107			$result = $this->ci->db->select('backup')->get('settings');
108			if ($result) {
109			$row = $result->result_array();
110			} else {
111			$row = [];
112			}
113
114			$backupSettings = unserialize($row[0]['backup']);
115			if (!is_array($backupSettings)) { // no settings yet
116			return NULL;
117			}
118			if ($key != null) {
119			if (!array_key_exists($key, $backupSettings)) {
120			return NULL;
121			}
122			return $backupSettings[$key];
123			}
124			return $backupSettings;
125			}
126
127			/**
128			* Creating the backup file
129			* @param string $ext extention (txt\|zip\|gzip)
130			* @param string $prefix
131			* @param bool\|string $fullName (optional) filename
132			* @param array $params
133			* @return false\|string filename\|FALSE
134			*/
135			public function createBackup($ext, $prefix = NULL, $fullName = FALSE, $params = []) {
			0 ignored issues – show Unused Code introduced 2017-11-16 08:51 UTC by Report Bug Copy Issue Report The parameter `$params` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
136			if (is_really_writable($this->directory)) {
137			if ($prefix == null) {
138			$prefix = 'sql';
139			}
140			if ($fullName === TRUE) {
141			$fileName = $prefix;
142			} else {
143			$fileName = $prefix . '_' . date('d-m-Y_H.i.s');
144			}
145
146			$params = [
147			'format' => $ext == 'sql' ? 'txt' : $ext,
148			];
149
150			$currentDbInstance = $this->ci->db;
151
152			$this->initBackupDB();
153
154			$backup = & $this->ci->dbutil->backup($params);
155
156			$this->ci->db = $currentDbInstance;
157
158			if (write_file($this->directory . '/' . $fileName . '.' . $ext, $backup)) {
159			return $this->directory . '/' . $fileName . '.' . $ext;
160			}
161			$this->error = 'Невозможно создать файл, проверте папку ' . BACKUPFOLDER . ' на возможность записи';
162			return FALSE;
163			} else {
164			$this->error = 'Невозможно создать снимок базы, проверте папку ' . BACKUPFOLDER . ' на возможность записи';
165			return FALSE;
166			}
167			}
168
169			/**
170			* Init DB for backup with msql driver
171			*/
172			private function initBackupDB() {
173			// this is just all config keys
174			$configNames = [
175			'hostname',
176			'username',
177			'password',
178			'database',
179			'dbdriver',
180			'dbprefix',
181			'pconnect',
182			'db_debug',
183			'cache_on',
184			'cachedir',
185			'char_set',
186			'dbcollat',
187			'swap_pre',
188			'autoinit',
189			'stricton',
190			];
191
192			$config = [];
193			foreach ($configNames as $key) {
194			$config[$key] = $key == 'dbdriver' ? 'mysql' : $this->ci->db->$key;
195			}
196
197			$this->ci->db = $this->ci->load->database($config, TRUE);
198			$this->ci->load->dbutil();
199			}
200
201			/**
202			*
203			* @return boolean
			0 ignored issues – show Documentation introduced 2015-11-28 17:39 UTC by Report Bug Copy Issue Report Should the return type not be `array<string,integer>\|false`? This check compares the return type specified in the `@return` annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch. Loading history...
204			*/
205			public function deleteOldFiles() {
206			$term = $this->getSetting('backup_term');
207			$maxSize = ($this->getSetting('backup_maxsize') * 1024 * 1024);
			0 ignored issues – show Unused Code introduced 2015-11-28 17:39 UTC by Report Bug Copy Issue Report `$maxSize` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
208
209			$maxSize = 5 * 1024 * 1024;
210			// if time of file will be lower then delete
211			$time = time() - (60 * 60 * 24 * 30.5 * $term);
212
213			$files = $this->backupFiles();
214			// get summary backup size
215			$size = 0;
216			foreach ($files as $file) {
217			$size += $file['size'];
218			}
219
220			// start deleting if overload more then max size
221			if ($size > $maxSize) {
222			$deleteSize = $size - $maxSize;
223			$deleteEdOnSize = 0;
224			$filesCount = 0;
225			do {
226			$fileToDelete = $this->getOldestFileToDelete();
227			if ($fileToDelete == FALSE) { // if FALSE then no more files to delete
228			break;
229			}
230			if ($fileToDelete['timeUpdate'] > $time) { // check if not overrun max date
231			break;
232			}
233			$filesCount++;
234			$deleteEdOnSize += $fileToDelete['size'];
235			unlink($this->directory . '/' . $fileToDelete['filename']);
236			} while ($deleteEdOnSize < $deleteSize);
237
238			return [
239			'count' => $filesCount,
240			'size' => $deleteEdOnSize,
241			];
242			}
243			return FALSE;
244			}
245
246			/**
247			*
248			* @return boolean
249			*/
250			public function getOldestFileToDelete() {
251			$files_ = $this->backupFiles();
252			// getting only files that allow to delete by pattern
253			$files = [];
254			foreach ($files_ as $file) {
255			if ($this->checkFileName($file['filename'], 'allowDelete') && $file['locked'] != 1) {
256			$files[] = $file;
257			}
258			}
259
260			if (!count($files) > 0) {
261			return FALSE;
262			}
263
264			$minKey = 0;
265			$minTime = $files[0]['timeUpdate'];
266
267			$countFiles = count($files);
268			for ($i = 1; $i < $countFiles; $i++) {
269			if ($minTime > $files[$i]['timeUpdate']) {
270			$minTime = $files[$i]['timeUpdate'];
271			$minKey = $i;
272			}
273			}
274			return $files[$minKey];
275			}
276
277			/**
278			* Getting list of backup files
279			* @return array
280			*/
281			public function backupFiles() {
282			$lockedFiles = $this->getSetting('lockedFiles');
283			if (!is_array($lockedFiles)) {
284			$lockedFiles = [];
285			}
286			$files = [];
287			if ($dir = opendir($this->directory)) {
288			while (FALSE !== ($fileName = readdir($dir))) {
289			if ($fileName != '.' & $fileName !== '..') {
			0 ignored issues – show Comprehensibility introduced 2015-11-28 17:39 UTC by Report Bug Copy Issue Report Consider adding parentheses for clarity. Current Interpretation: `($fileName != '.') & $fileName !== '..'`, Probably Intended Meaning: `$fileName != ('.' & $fileName !== '..')` When comparing the result of a bit operation, we suggest to add explicit parenthesis and not to rely on PHP’s built-in operator precedence to ensure the code behaves as intended and to make it more readable. Let’s take a look at these examples: // Returns always int(0). return 0 === $foo & 4; return (0 === $foo) & 4; // More likely intended return: true/false return 0 === ($foo & 4); Loading history...
290			if (TRUE === $this->checkFileName($fileName)) {
291			$file = [
292			'filename' => $fileName,
293			'allowDelete' => $this->checkFileName($fileName, 'allowDelete') == TRUE ? 1 : 0,
294			'type' => $this->checkFileName($fileName, 'type'),
295			'ext' => pathinfo($fileName, PATHINFO_EXTENSION),
296			'size' => filesize($this->directory . '/' . $fileName),
297			'timeUpdate' => filemtime($this->directory . '/' . $fileName),
298			];
299			if ($file['type'] == 'default') {
300			$prefIndex = strpos($fileName, '_');
301			$file['prefix'] = substr($fileName, 0, $prefIndex);
302			} else {
303			$file['prefix'] = 'update';
304			}
305			if (in_array($fileName, $lockedFiles)) {
306			$file['locked'] = 1;
307			} else {
308			$file['locked'] = 0;
309			}
310			$files[] = $file;
311			}
312			}
313			}
314			closedir($dir);
315			}
316
317			foreach ($files as $key => $row) {
318			$backaps[$key] = $row['timeUpdate'];
			0 ignored issues – show Coding Style Comprehensibility introduced 2015-11-28 17:39 UTC by Report Bug Copy Issue Report `$backaps` was never initialized. Although not strictly required by PHP, it is generally a good practice to add `$backaps = array();` before regardless. Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code. Let’s take a look at an example: foreach ($collection as $item) { $myArray['foo'] = $item->getFoo(); if ($item->hasBar()) { $myArray['bar'] = $item->getBar(); } // do something with $myArray } As you can see in this example, the array `$myArray` is initialized the first time when the foreach loop is entered. You can also see that the value of the `bar` key is only written conditionally; thus, its value might result from a previous iteration. This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization `$myArray = array()` either outside or inside the foreach loop. Loading history...
319			}
320
321			array_multisort($backaps, SORT_DESC, $files);
322
323			return $files;
324			}
325
326			/**
327			* Checking file name by pattern
328			* @param string $fileName
329			* @param boolean\|string $returnValue
330			* @return boolean\|string
331			*/
332			protected function checkFileName($fileName, $returnValue = FALSE) {
333			foreach ($this->filePatterns as $pattern => $params) {
334			if (preg_match($pattern, $fileName)) {
335			return $returnValue !== FALSE ? $params[$returnValue] : TRUE;
336			}
337			}
338			return FALSE;
339			}
340
341			/**
342			* Deleting backup file
343			* @param string $file
344			* @return boolean true on success, false on error
345			*/
346			public function deleteFile($file) {
347			if (FALSE === $this->checkFileName($file, 'allowDelete')) {
348			return FALSE;
349			}
350			if (file_exists($this->directory . '/' . $file)) {
351			return unlink($this->directory . '/' . $file);
352			}
353			return FALSE;
354			}
355
356			}

imagecms / ImageCMS

Backup::getOldestFileToDelete() B last analyzed 2019-09-03 12:36 UTC

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like

Backup::getOldestFileToDelete() B
last analyzed 2019-09-03 12:36 UTC