RotatingFileHandler::__construct() - Code Metrics - appserver-io/logger - Measure and Improve Code Quality continuously with Scrutinizer

RotatingFileHandler::__construct() B
last analyzed 2018-06-19 19:24 UTC

↳ Parent: RotatingFileHandler

Complexity

Conditions	3
Paths	2

Size

Total Lines	27
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	3

Importance

Changes

Metric	Value
dl	0
loc	27
ccs	14
cts	14
cp	1
rs	8.8571
c	0
b	0
f	0
cc	3
eloc	13
nc	2
nop	4
crap	3

<?php

/**
 * AppserverIo\Logger\Handlers\RotatingFileHandler
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 *
 * PHP version 5
 *
 * @author    Tim Wagner <[email protected]>
 * @copyright 2015 TechDivision GmbH <[email protected]>
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
 * @link      http://github.com/appserver-io/logger
 * @link      http://www.appserver.io
 */

namespace AppserverIo\Logger\Handlers;

use Psr\Log\LogLevel;
use AppserverIo\Logger\LogMessageInterface;

/**
 * Handler implementation which allows for proper usage within a pthreads environment, as there
 * is a bug denying a call to a protected method within the same hierarchy if the classes are
 * already known by the parent thread context.
 *
 * The class got also extended to support file rotation based on a maximal file size.
 *
 * @author    Tim Wagner <[email protected]>
 * @copyright 2015 TechDivision GmbH <[email protected]>
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
 * @link      http://github.com/appserver-io/logger
 * @link      http://www.appserver.io
 */
class RotatingFileHandler extends CustomFileHandler
{

    /**
     * Placeholder for the "date" part of the file format
     *
     * @var string DATE_FORMAT_PLACEHOLDER
     */
    const DATE_FORMAT_PLACEHOLDER = '{date}';

    /**
     * Placeholder for the "original filename" part of the file format
     *
     * @var string FILENAME_FORMAT_PLACEHOLDER
     */
    const FILENAME_FORMAT_PLACEHOLDER = '{filename}';

    /**
     * The maximal possible file size (2Gb).
     * Limited as a precaution due to PHP integer type limitation on x86 systems
     *
     * @var integer MAX_FILE_SIZE
     */
    const MAX_FILE_SIZE = 2147483647;

    /**
     * Placeholder for the "size iterator" part of the file format
     *
     * @var string SIZE_FORMAT_PLACEHOLDER
     */
    const SIZE_FORMAT_PLACEHOLDER = '{sizeIterator}';

    /**
     * Format for the date shown within the rotated filename.
     * E.g. 'Y-m-d'
     *
     * @var string
     */
    protected $dateFormat;

    /**
     * Format of the filename after being rotated
     *
     * @var string
     */
    protected $filenameFormat;

    /**
     * Number of maximal files to keep.
     * Older files exceeding this limit will be deleted
     *
     * @var integer
     */
    protected $maxFiles;

    /**
     * Maximal size a log file might have after rotation gets triggered
     *
     * @var integer
     */
    protected $maxSize;

    /**
     * Whether or not a rotation has to take place at the next possible point in time
     *
     * @var boolean
     */
    protected $mustRotate;

    /**
     * Date at which the next rotation has to take place (if there are no size based rotations before)
     *
     * @var \DateTime
     */
    protected $nextRotationDate;

    /**
     * The original name of the file to rotate
     *
     * @var string
     */
    protected $originalLogFile;

    /**
     * Default constructor
     *
     * @param string       $logFile  Log file base name
     * @param integer      $logLevel The minimum logging level at which this handler will be triggered
     * @param integer      $maxFiles The maximal amount of files to keep (0 means unlimited)
     * @param integer|null $maxSize  The maximal size of a log file in byte (limited to a technical max of 2GB)
     */
    public function __construct($logFile, $logLevel = LogLevel::DEBUG, $maxFiles = 0, $maxSize = null)
    {

        // also construct the parent
        parent::__construct($logFile, $logLevel);

        // get the values passed via constructor
        $this->originalLogFile = $logFile;
        $this->maxFiles = (integer) $maxFiles;

        // also set the maximal size, but make sure we do not exceed the boundary
        if ($maxSize > RotatingFileHandler::MAX_FILE_SIZE || is_null($maxSize)) {
            $maxSize = RotatingFileHandler::MAX_FILE_SIZE;
        }
        // set the maximum size of log files
        $this->maxSize = (int) $maxSize;

        // preset the filename format
        $this->filenameFormat = self::FILENAME_FORMAT_PLACEHOLDER . '-' .
            self::DATE_FORMAT_PLACEHOLDER . '_' .
            self::SIZE_FORMAT_PLACEHOLDER;

        // set some default values
        $this->dateFormat = 'Y-m-d';
        $this->mustRotate = false;
        $this->nextRotationDate = new \DateTime('tomorrow');
    }

    /**
     * Will cleanup log files based on the value set for their maximal number
     *
     * @return void
     */
    protected function cleanupFiles()
    {
        // skip GC of old logs if files are unlimited
        if (0 === $this->maxFiles) {
            return;
        }

        $logFiles = glob($this->getGlobPattern());
        if ($this->maxFiles >= count($logFiles)) {
            // no files to remove
            return;
        }

        // Sorting the files by name to remove the older ones
        usort(
            $logFiles,
            function ($a, $b) {
                return strcmp($b, $a);
            }
        );

        // collect the files we have to archive and clean and prepare the archive's internal mapping
        $oldFiles = array();
        foreach (array_slice($logFiles, $this->maxFiles) as $oldFile) {
            $oldFiles[basename($oldFile)] = $oldFile;
        }

        // create an archive from the old files
        $dateTime = new \DateTime();
        $currentTime = $dateTime->format($this->getDateFormat());
        $phar = new \PharData($this->originalLogFile . $currentTime .  '.tar');
        $phar->buildFromIterator(new \ArrayIterator($oldFiles));

        // finally delete them as we got them in the archive
        foreach ($oldFiles as $oldFile) {
            if (is_writable($oldFile)) {
                unlink($oldFile);
            }
        }
    }

    /**
     * Will close the handler
     *
     * @return void
     */
    public function close()
    {
        // might do a rotation before closing
        if (true === $this->mustRotate) {
            $this->rotate();
        }
    }

    /**
     * Sets the next rotation date.
     *
     * @param \DateTime $nextRotationDate The next rotation date
     *
     * @return void
     */
    public function setNextRotationDate(\DateTime $nextRotationDate)
    {
        $this->nextRotationDate = $nextRotationDate;
    }

    /**
     * Will return the name of the file the next rotation will produce
     *
     * @return string
     */
    public function getRotatedFilename()
    {
        $fileInfo = pathinfo($this->logFile);
        $currentFilename = str_replace(
            array(
                self::FILENAME_FORMAT_PLACEHOLDER,
                self::DATE_FORMAT_PLACEHOLDER,
                self::SIZE_FORMAT_PLACEHOLDER
            ),
            array(
                $fileInfo['filename'],
                date($this->dateFormat),
                $this->getCurrentSizeIteration() // $this->currentSizeIteration
            ),
            $fileInfo['dirname'] . '/' . $this->filenameFormat
        );
        if (!empty($fileInfo['extension'])) {
            $currentFilename .= '.' . $fileInfo['extension'];
        }
        return $currentFilename;
    }

    /**
     * Will return the currently used iteration based on a file's size.
     *
     * @return integer The number of logfiles already exists
     */
    protected function getCurrentSizeIteration()
    {

        // load an iterator the current log files
        $logFiles = glob($this->getGlobPattern(date($this->dateFormat)));

        $fileCount = count($logFiles); // count the files
        if ($fileCount === 0) {
            return 1;
        } else {
            return count($logFiles) + 1;
        }
    }

    /**
     * Getter for the date format to store the logfiles under.
     *
     * @return string The date format to store the logfiles under
     */
    public function getDateFormat()
    {
        return $this->dateFormat;
    }

    /**
     * Getter for the file format to store the logfiles under.
     *
     * @return string The file format to store the logfiles under
     */
    public function getFilenameFormat()
    {
        return $this->filenameFormat;
    }

    /**
     * Will return a glob pattern with which log files belonging to the currently rotated file can be found
     *
     * @param string|\DateTime $dateSpecifier Might specify a specific date to search files for
     *
     * @return string
     */
    public function getGlobPattern($dateSpecifier = '*')
    {

        // load the file information
        $fileInfo = pathinfo($this->logFile);

        // create a glob expression to find all log files
        $glob = str_replace(
            array(
                self::FILENAME_FORMAT_PLACEHOLDER,
                self::DATE_FORMAT_PLACEHOLDER,
                self::SIZE_FORMAT_PLACEHOLDER
            ),
            array(
                $fileInfo['filename'],
                $dateSpecifier,
                '*'
            ),
            $fileInfo['dirname'] . '/' . $this->filenameFormat
        );

        // append the file extension if available
        if (empty($fileInfo['extension']) === false) {
            $glob .= '.' . $fileInfo['extension'];
        }

        // return the glob expression
        return $glob;
    }

    /**
     * Does the rotation of the log file which includes updating the currently used filename as well as cleaning up
     * the log directory
     *
     * @return void
     */
    protected function rotate()
    {
        // update filename
        rename($this->logFile, $this->getRotatedFilename());

        $this->nextRotationDate = new \DateTime('tomorrow');
        $this->mustRotate = false;
    }

    /**
     * Setter for the date format
     *
     * @param string $dateFormat Form that date will be shown in
     *
     * @return void
     */
    public function setDateFormat($dateFormat)
    {
        $this->dateFormat = $dateFormat;
        $this->close();
    }

    /**
     * Setter for the file format
     * If setting this please make use of the defined format placeholder constants
     *
     * @param string $filenameFormat New format to be used
     *
     * @return void
     */
    public function setFilenameFormat($filenameFormat)
    {
        $this->filenameFormat = $filenameFormat;
        $this->close();
    }

    /**
     * Handles the log message.
     *
     * @param \AppserverIo\Logger\LogMessageInterface $logMessage The message to be handled
     *
     * @return void
     */
    public function handle(LogMessageInterface $logMessage)
    {

        // do we have to rotate based on the current date or the file's size?
        if ($this->nextRotationDate < new \DateTime()) {
            $this->mustRotate = true;
            $this->close();
        } elseif (file_exists($this->logFile) && filesize($this->logFile) >= $this->maxSize) {
            $this->mustRotate = true;
            $this->close();
        }

        // let the parent class handle the log message
        parent::handle($logMessage);

        // cleanup the files we might not want
        $this->cleanupFiles();
    }
}


1		<?php
2
3		/**
4		* AppserverIo\Logger\Handlers\RotatingFileHandler
5		*
6		* NOTICE OF LICENSE
7		*
8		* This source file is subject to the Open Software License (OSL 3.0)
9		* that is available through the world-wide-web at this URL:
10		* http://opensource.org/licenses/osl-3.0.php
11		*
12		* PHP version 5
13		*
14		* @author Tim Wagner <[email protected]>
15		* @copyright 2015 TechDivision GmbH <[email protected]>
16		* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
17		* @link http://github.com/appserver-io/logger
18		* @link http://www.appserver.io
19		*/
20
21		namespace AppserverIo\Logger\Handlers;
22
23		use Psr\Log\LogLevel;
24		use AppserverIo\Logger\LogMessageInterface;
25
26		/**
27		* Handler implementation which allows for proper usage within a pthreads environment, as there
28		* is a bug denying a call to a protected method within the same hierarchy if the classes are
29		* already known by the parent thread context.
30		*
31		* The class got also extended to support file rotation based on a maximal file size.
32		*
33		* @author Tim Wagner <[email protected]>
34		* @copyright 2015 TechDivision GmbH <[email protected]>
35		* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
36		* @link http://github.com/appserver-io/logger
37		* @link http://www.appserver.io
38		*/
39		class RotatingFileHandler extends CustomFileHandler
40		{
41
42		/**
43		* Placeholder for the "date" part of the file format
44		*
45		* @var string DATE_FORMAT_PLACEHOLDER
46		*/
47		const DATE_FORMAT_PLACEHOLDER = '{date}';
48
49		/**
50		* Placeholder for the "original filename" part of the file format
51		*
52		* @var string FILENAME_FORMAT_PLACEHOLDER
53		*/
54		const FILENAME_FORMAT_PLACEHOLDER = '{filename}';
55
56		/**
57		* The maximal possible file size (2Gb).
58		* Limited as a precaution due to PHP integer type limitation on x86 systems
59		*
60		* @var integer MAX_FILE_SIZE
61		*/
62		const MAX_FILE_SIZE = 2147483647;
63
64		/**
65		* Placeholder for the "size iterator" part of the file format
66		*
67		* @var string SIZE_FORMAT_PLACEHOLDER
68		*/
69		const SIZE_FORMAT_PLACEHOLDER = '{sizeIterator}';
70
71		/**
72		* Format for the date shown within the rotated filename.
73		* E.g. 'Y-m-d'
74		*
75		* @var string
76		*/
77		protected $dateFormat;
78
79		/**
80		* Format of the filename after being rotated
81		*
82		* @var string
83		*/
84		protected $filenameFormat;
85
86		/**
87		* Number of maximal files to keep.
88		* Older files exceeding this limit will be deleted
89		*
90		* @var integer
91		*/
92		protected $maxFiles;
93
94		/**
95		* Maximal size a log file might have after rotation gets triggered
96		*
97		* @var integer
98		*/
99		protected $maxSize;
100
101		/**
102		* Whether or not a rotation has to take place at the next possible point in time
103		*
104		* @var boolean
105		*/
106		protected $mustRotate;
107
108		/**
109		* Date at which the next rotation has to take place (if there are no size based rotations before)
110		*
111		* @var \DateTime
112		*/
113		protected $nextRotationDate;
114
115		/**
116		* The original name of the file to rotate
117		*
118		* @var string
119		*/
120		protected $originalLogFile;
121
122		/**
123		* Default constructor
124		*
125		* @param string $logFile Log file base name
126		* @param integer $logLevel The minimum logging level at which this handler will be triggered
127		* @param integer $maxFiles The maximal amount of files to keep (0 means unlimited)
128		* @param integer\|null $maxSize The maximal size of a log file in byte (limited to a technical max of 2GB)
129		*/
130	8	public function __construct($logFile, $logLevel = LogLevel::DEBUG, $maxFiles = 0, $maxSize = null)
131		{
132
133		// also construct the parent
134	8	parent::__construct($logFile, $logLevel);
135
136		// get the values passed via constructor
137	8	$this->originalLogFile = $logFile;
138	8	$this->maxFiles = (integer) $maxFiles;
139
140		// also set the maximal size, but make sure we do not exceed the boundary
141	8	if ($maxSize > RotatingFileHandler::MAX_FILE_SIZE \|\| is_null($maxSize)) {
142	8	$maxSize = RotatingFileHandler::MAX_FILE_SIZE;
143		}
144		// set the maximum size of log files
145	8	$this->maxSize = (int) $maxSize;
146
147		// preset the filename format
148	8	$this->filenameFormat = self::FILENAME_FORMAT_PLACEHOLDER . '-' .
149	8	self::DATE_FORMAT_PLACEHOLDER . '_' .
150	8	self::SIZE_FORMAT_PLACEHOLDER;
151
152		// set some default values
153	8	$this->dateFormat = 'Y-m-d';
154	8	$this->mustRotate = false;
155	8	$this->nextRotationDate = new \DateTime('tomorrow');
156	8	}
157
158		/**
159		* Will cleanup log files based on the value set for their maximal number
160		*
161		* @return void
162		*/
163	6	protected function cleanupFiles()
164		{
165		// skip GC of old logs if files are unlimited
166	6	if (0 === $this->maxFiles) {
167	5	return;
168		}
169
170	1	$logFiles = glob($this->getGlobPattern());
171	1	if ($this->maxFiles >= count($logFiles)) {
172		// no files to remove
173	1	return;
174		}
175
176		// Sorting the files by name to remove the older ones
177	1	usort(
178	1	$logFiles,
179	1	function ($a, $b) {
180	1	return strcmp($b, $a);
181	1	}
182		);
183
184		// collect the files we have to archive and clean and prepare the archive's internal mapping
185	1	$oldFiles = array();
186	1	foreach (array_slice($logFiles, $this->maxFiles) as $oldFile) {
187	1	$oldFiles[basename($oldFile)] = $oldFile;
188		}
189
190		// create an archive from the old files
191	1	$dateTime = new \DateTime();
192	1	$currentTime = $dateTime->format($this->getDateFormat());
193	1	$phar = new \PharData($this->originalLogFile . $currentTime . '.tar');
194	1	$phar->buildFromIterator(new \ArrayIterator($oldFiles));
195
196		// finally delete them as we got them in the archive
197	1	foreach ($oldFiles as $oldFile) {
198	1	if (is_writable($oldFile)) {
199	1	unlink($oldFile);
200		}
201		}
202	1	}
203
204		/**
205		* Will close the handler
206		*
207		* @return void
208		*/
209	6	public function close()
210		{
211		// might do a rotation before closing
212	6	if (true === $this->mustRotate) {
213	4	$this->rotate();
214		}
215	6	}
216
217		/**
218		* Sets the next rotation date.
219		*
220		* @param \DateTime $nextRotationDate The next rotation date
221		*
222		* @return void
223		*/
224	1	public function setNextRotationDate(\DateTime $nextRotationDate)
225		{
226	1	$this->nextRotationDate = $nextRotationDate;
227	1	}
228
229		/**
230		* Will return the name of the file the next rotation will produce
231		*
232		* @return string
233		*/
234	4	public function getRotatedFilename()
235		{
236	4	$fileInfo = pathinfo($this->logFile);
237	4	$currentFilename = str_replace(
238		array(
239	4	self::FILENAME_FORMAT_PLACEHOLDER,
240	4	self::DATE_FORMAT_PLACEHOLDER,
241	4	self::SIZE_FORMAT_PLACEHOLDER
242		),
243		array(
244	4	$fileInfo['filename'],
245	4	date($this->dateFormat),
246	4	$this->getCurrentSizeIteration() // $this->currentSizeIteration
247		),
248	4	$fileInfo['dirname'] . '/' . $this->filenameFormat
249		);
250	4	if (!empty($fileInfo['extension'])) {
251	4	$currentFilename .= '.' . $fileInfo['extension'];
252		}
253	4	return $currentFilename;
254		}
255
256		/**
257		* Will return the currently used iteration based on a file's size.
258		*
259		* @return integer The number of logfiles already exists
260		*/
261	4	protected function getCurrentSizeIteration()
262		{
263
264		// load an iterator the current log files
265	4	$logFiles = glob($this->getGlobPattern(date($this->dateFormat)));
266
267	4	$fileCount = count($logFiles); // count the files
268	4	if ($fileCount === 0) {
269	4	return 1;
270		} else {
271	3	return count($logFiles) + 1;
272		}
273		}
274
275		/**
276		* Getter for the date format to store the logfiles under.
277		*
278		* @return string The date format to store the logfiles under
279		*/
280	5	public function getDateFormat()
281		{
282	5	return $this->dateFormat;
283		}
284
285		/**
286		* Getter for the file format to store the logfiles under.
287		*
288		* @return string The file format to store the logfiles under
289		*/
290	1	public function getFilenameFormat()
291		{
292	1	return $this->filenameFormat;
293		}
294
295		/**
296		* Will return a glob pattern with which log files belonging to the currently rotated file can be found
297		*
298		* @param string\|\DateTime $dateSpecifier Might specify a specific date to search files for
299		*
300		* @return string
301		*/
302	5	public function getGlobPattern($dateSpecifier = '*')
303		{
304
305		// load the file information
306	5	$fileInfo = pathinfo($this->logFile);
307
308		// create a glob expression to find all log files
309	5	$glob = str_replace(
310		array(
311	5	self::FILENAME_FORMAT_PLACEHOLDER,
312	5	self::DATE_FORMAT_PLACEHOLDER,
313	5	self::SIZE_FORMAT_PLACEHOLDER
314		),
315		array(
316	5	$fileInfo['filename'],
317	5	$dateSpecifier,
318	5	'*'
319		),
320	5	$fileInfo['dirname'] . '/' . $this->filenameFormat
321		);
322
323		// append the file extension if available
324	5	if (empty($fileInfo['extension']) === false) {
325	5	$glob .= '.' . $fileInfo['extension'];
326		}
327
328		// return the glob expression
329	5	return $glob;
330		}
331
332		/**
333		* Does the rotation of the log file which includes updating the currently used filename as well as cleaning up
334		* the log directory
335		*
336		* @return void
337		*/
338	4	protected function rotate()
339		{
340		// update filename
341	4	rename($this->logFile, $this->getRotatedFilename());
342
343	4	$this->nextRotationDate = new \DateTime('tomorrow');
344	4	$this->mustRotate = false;
345	4	}
346
347		/**
348		* Setter for the date format
349		*
350		* @param string $dateFormat Form that date will be shown in
351		*
352		* @return void
353		*/
354	1	public function setDateFormat($dateFormat)
355		{
356	1	$this->dateFormat = $dateFormat;
357	1	$this->close();
358	1	}
359
360		/**
361		* Setter for the file format
362		* If setting this please make use of the defined format placeholder constants
363		*
364		* @param string $filenameFormat New format to be used
365		*
366		* @return void
367		*/
368	1	public function setFilenameFormat($filenameFormat)
369		{
370	1	$this->filenameFormat = $filenameFormat;
371	1	$this->close();
372	1	}
373
374		/**
375		* Handles the log message.
376		*
377		* @param \AppserverIo\Logger\LogMessageInterface $logMessage The message to be handled
378		*
379		* @return void
380		*/
381	6	public function handle(LogMessageInterface $logMessage)
382		{
383
384		// do we have to rotate based on the current date or the file's size?
385	6	if ($this->nextRotationDate < new \DateTime()) {
386	1	$this->mustRotate = true;
387	1	$this->close();
388	6	} elseif (file_exists($this->logFile) && filesize($this->logFile) >= $this->maxSize) {
389	3	$this->mustRotate = true;
390	3	$this->close();
391		}
392
393		// let the parent class handle the log message
394	6	parent::handle($logMessage);
395
396		// cleanup the files we might not want
397	6	$this->cleanupFiles();
398	6	}
399		}
400

appserver-io / logger

RotatingFileHandler::__construct() B last analyzed 2018-06-19 19:24 UTC

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RotatingFileHandler::__construct() B
last analyzed 2018-06-19 19:24 UTC