Handler::__clone() - Code Metrics - Inspection of "Update .travis.yml" - barbushin/php-console - Measure and Improve Code Quality continuously with Scrutinizer

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by Sergey

created 2018-02-25 12:43 UTC

Handler::__clone() A

↳ Parent: Handler

Complexity

Conditions	1
Paths	1

Size

Total Lines	2
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	0
dl	0
loc	2
rs	10
c	0
b	0
f	0
ccs	0
cts	0
cp	0
crap	2

<?php

namespace PhpConsole;

/**
 * Overrides PHP errors and exceptions handlers, so all errors, exceptions and debug messages will be sent to PHP Console client
 * By default all handled errors and exceptions will be passed to previously defined handlers
 *
 * You will need to install Google Chrome extension "PHP Console"
 * https://chrome.google.com/webstore/detail/php-console/nfhmhhlpfleoednkpnnnkolmclajemef
 *
 * @package PhpConsole
 * @version 3.1
 * @link http://consle.com
 * @author Sergey Barbushin http://linkedin.com/in/barbushin
 * @copyright © Sergey Barbushin, 2011-2013. All rights reserved.
 * @license http://www.opensource.org/licenses/BSD-3-Clause "The BSD 3-Clause License"
 */
class Handler {

	const ERRORS_RECURSION_LIMIT = 3;

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

	/** @var Connector */
	protected $connector;
	protected $isStarted = false;
	protected $isHandling = false;
	protected $errorsHandlerLevel;
	protected $handleErrors = true;
	protected $handleExceptions = true;
	protected $callOldHandlers = true;
	protected $oldErrorsHandler;
	protected $oldExceptionsHandler;
	protected $recursiveHandlingLevel = 0;

	/**
	 * @return static
	 */
	public static function getInstance() {
		if(!self::$instance) {
			self::$instance = new static();
		}
		return self::$instance;
	}

	protected function __construct() {
		$this->connector = Connector::getInstance();
	}

	/**
	 * @codeCoverageIgnore
	 */
	private final function __clone() {

	}

	/**
	 * Start errors & exceptions handlers
	 * @throws \Exception
	 */
	public function start() {
		if($this->isStarted) {
			throw new \Exception(get_called_class() . ' is already started, use ' . get_called_class() . '::getInstance()->isStarted() to check it.');
		}
		$this->isStarted = true;

		if($this->handleErrors) {
			$this->initErrorsHandler();
		}
		if($this->handleExceptions) {
			$this->initExceptionsHandler();
		}
	}

	/**
	 * Validate that method is called before start. Required for handlers configuration methods.
	 * @throws \Exception
	 */
	protected function checkIsCalledBeforeStart() {
		if($this->isStarted) {
			throw new \Exception('This method can be called only before ' . get_class($this) . '::start()');
		}
	}

	/**
	 * Enable or disable errors handler
	 * @param bool $isEnabled
	 */
	public function setHandleErrors($isEnabled) {
		$this->checkIsCalledBeforeStart();
		$this->handleErrors = $isEnabled; // @codeCoverageIgnore
	}

	/**
	 * Enable or disable exceptions handler
	 * @param bool $isEnabled
	 */
	public function setHandleExceptions($isEnabled) {
		$this->checkIsCalledBeforeStart();
		$this->handleExceptions = $isEnabled; // @codeCoverageIgnore
	}

	/**
	 * Enable or disable calling overridden  errors & exceptions
	 * @param bool $isEnabled
	 */
	public function setCallOldHandlers($isEnabled) {
		$this->callOldHandlers = $isEnabled;
	}

	/**
	 * @return Connector
	 */
	public function getConnector() {
		return $this->connector;
	}

	/**
	 * Check if PHP Console handler is started
	 * @return bool
	 */
	public function isStarted() {
		return $this->isStarted;
	}

	/**
	 * Override PHP exceptions handler to PHP Console handler
	 */
	protected function initExceptionsHandler() {
		$this->oldExceptionsHandler = set_exception_handler(array($this, 'handleException'));
	}

	/**
	 * Set custom errors handler level like E_ALL ^ E_STRICT
	 * But, anyway, it's strongly recommended to configure ignore some errors type in PHP Console extension options
	 * IMPORTANT: previously old error handler will be called only with new errors level
	 * @param int $level see http://us1.php.net/manual/ru/function.error-reporting.php
	 */
	public function setErrorsHandlerLevel($level) {
		$this->checkIsCalledBeforeStart();
		$this->errorsHandlerLevel = $level;
	}

	/**
	 * Override PHP errors handler to PHP Console handler
	 */
	protected function initErrorsHandler() {
		ini_set('display_errors', false);
		error_reporting($this->errorsHandlerLevel ? : E_ALL | E_STRICT);
		$this->oldErrorsHandler = set_error_handler(array($this, 'handleError'));
		register_shutdown_function(array($this, 'checkFatalErrorOnShutDown'));
		$this->connector->registerFlushOnShutDown();
	}

	/**
	 * Method is called by register_shutdown_function(), it's required to handle fatal PHP errors. Never call it manually.
	 * @codeCoverageIgnore
	 */
	public function checkFatalErrorOnShutDown() {
		$error = error_get_last();
		if($error) {

			ini_set('memory_limit', memory_get_usage(true) + 1000000); // if memory limit exceeded
			$this->callOldHandlers = false;
			$this->handleError($error['type'], $error['message'], $error['file'], $error['line'], null, 1);
		}
	}

	/**
	 * Handle error data
	 * @param int|null $code
	 * @param string|null $text
	 * @param string|null $file
	 * @param int|null $line
	 * @param null $context
	 * @param int|array $ignoreTraceCalls Ignore tracing classes by name prefix `array('PhpConsole')` or fixed number of calls to ignore
	 */
	public function handleError($code = null, $text = null, $file = null, $line = null, $context = null, $ignoreTraceCalls = 0) {
		if(!$this->isStarted || error_reporting() === 0 || $this->isHandlingDisabled() || ($this->errorsHandlerLevel && !($code & $this->errorsHandlerLevel))) {
			return;
		}
		$this->onHandlingStart();
		$this->connector->getErrorsDispatcher()->dispatchError($code, $text, $file, $line, is_numeric($ignoreTraceCalls) ? $ignoreTraceCalls + 1 : $ignoreTraceCalls);
		if($this->oldErrorsHandler && $this->callOldHandlers) {
			call_user_func_array($this->oldErrorsHandler, array($code, $text, $file, $line, $context));
		}
		$this->onHandlingComplete();
	}

	/**
	 * Method is called before handling any error or exception
	 */
	protected function onHandlingStart() {
		$this->recursiveHandlingLevel++;
	}

	/**
	 * Method is called after handling any error or exception
	 */
	protected function onHandlingComplete() {
		$this->recursiveHandlingLevel--;
	}

	/**
	 * Check if errors/exception handling is disabled
	 * @return bool
	 */
	protected function isHandlingDisabled() {
		return $this->recursiveHandlingLevel >= static::ERRORS_RECURSION_LIMIT;
	}

	/**
	 * Handle exception object
	 * @param \Exception|\Throwable $exception
	 */
	public function handleException($exception) {
		if(!$this->isStarted || $this->isHandlingDisabled()) {
			return;
		}
		try {
			$this->onHandlingStart();
			$this->connector->getErrorsDispatcher()->dispatchException($exception);
			if($this->oldExceptionsHandler && $this->callOldHandlers) {
				call_user_func($this->oldExceptionsHandler, $exception);
			}
		}
		catch(\Throwable $internalException) {

			$this->handleException($internalException);
		}
		catch(\Exception $internalException) {
			$this->handleException($internalException);
		}
		$this->onHandlingComplete();
	}

	/**
	 * Handle debug data
	 * @param mixed $data
	 * @param string|null $tags Tags separated by dot, e.g. "low.db.billing"
	 * @param int|array $ignoreTraceCalls Ignore tracing classes by name prefix `array('PhpConsole')` or fixed number of calls to ignore
	 */
	public function debug($data, $tags = null, $ignoreTraceCalls = 0) {
		if($this->connector->isActiveClient()) {
			$this->connector->getDebugDispatcher()->dispatchDebug($data, $tags, is_numeric($ignoreTraceCalls) ? $ignoreTraceCalls + 1 : $ignoreTraceCalls);
		}
	}
}


1		<?php
2
3		namespace PhpConsole;
4
5		/**
6		* Overrides PHP errors and exceptions handlers, so all errors, exceptions and debug messages will be sent to PHP Console client
7		* By default all handled errors and exceptions will be passed to previously defined handlers
8		*
9		* You will need to install Google Chrome extension "PHP Console"
10		* https://chrome.google.com/webstore/detail/php-console/nfhmhhlpfleoednkpnnnkolmclajemef
11		*
12		* @package PhpConsole
13		* @version 3.1
14		* @link http://consle.com
15		* @author Sergey Barbushin http://linkedin.com/in/barbushin
16		* @copyright © Sergey Barbushin, 2011-2013. All rights reserved.
17		* @license http://www.opensource.org/licenses/BSD-3-Clause "The BSD 3-Clause License"
18		*/
19		class Handler {
20
21		const ERRORS_RECURSION_LIMIT = 3;
22
23		/** @var Handler */
24		protected static $instance;
25
26		/** @var Connector */
27		protected $connector;
28		protected $isStarted = false;
29		protected $isHandling = false;
30		protected $errorsHandlerLevel;
31		protected $handleErrors = true;
32		protected $handleExceptions = true;
33		protected $callOldHandlers = true;
34		protected $oldErrorsHandler;
35		protected $oldExceptionsHandler;
36		protected $recursiveHandlingLevel = 0;
37
38		/**
39		* @return static
40		*/
41	22	public static function getInstance() {
42	22	if(!self::$instance) {
43	1	self::$instance = new static();
44		}
45	22	return self::$instance;
46		}
47
48	1	protected function __construct() {
49	1	$this->connector = Connector::getInstance();
50	1	}
51
52		/**
53		* @codeCoverageIgnore
54		*/
55		private final function __clone() {
		0 ignored issues – show Coding Style introduced 2016-08-23 12:33 UTC by Report Bug Copy Issue Report As per PSR2, `final` should precede the visibility keyword. Loading history...
56		}
57
58		/**
59		* Start errors & exceptions handlers
60		* @throws \Exception
61		*/
62	16	public function start() {
63	16	if($this->isStarted) {
64	1	throw new \Exception(get_called_class() . ' is already started, use ' . get_called_class() . '::getInstance()->isStarted() to check it.');
65		}
66	16	$this->isStarted = true;
67
68	16	if($this->handleErrors) {
69	16	$this->initErrorsHandler();
70		}
71	16	if($this->handleExceptions) {
72	16	$this->initExceptionsHandler();
73		}
74	16	}
75
76		/**
77		* Validate that method is called before start. Required for handlers configuration methods.
78		* @throws \Exception
79		*/
80	4	protected function checkIsCalledBeforeStart() {
81	4	if($this->isStarted) {
82	3	throw new \Exception('This method can be called only before ' . get_class($this) . '::start()');
83		}
84	1	}
85
86		/**
87		* Enable or disable errors handler
88		* @param bool $isEnabled
89		*/
90	1	public function setHandleErrors($isEnabled) {
91	1	$this->checkIsCalledBeforeStart();
92		$this->handleErrors = $isEnabled; // @codeCoverageIgnore
93		}
94
95		/**
96		* Enable or disable exceptions handler
97		* @param bool $isEnabled
98		*/
99	1	public function setHandleExceptions($isEnabled) {
100	1	$this->checkIsCalledBeforeStart();
101		$this->handleExceptions = $isEnabled; // @codeCoverageIgnore
102		}
103
104		/**
105		* Enable or disable calling overridden errors & exceptions
106		* @param bool $isEnabled
107		*/
108	2	public function setCallOldHandlers($isEnabled) {
109	2	$this->callOldHandlers = $isEnabled;
110	2	}
111
112		/**
113		* @return Connector
114		*/
115	2	public function getConnector() {
116	2	return $this->connector;
117		}
118
119		/**
120		* Check if PHP Console handler is started
121		* @return bool
122		*/
123		public function isStarted() {
124		return $this->isStarted;
125		}
126
127		/**
128		* Override PHP exceptions handler to PHP Console handler
129		*/
130	16	protected function initExceptionsHandler() {
131	16	$this->oldExceptionsHandler = set_exception_handler(array($this, 'handleException'));
132	16	}
133
134		/**
135		* Set custom errors handler level like E_ALL ^ E_STRICT
136		* But, anyway, it's strongly recommended to configure ignore some errors type in PHP Console extension options
137		* IMPORTANT: previously old error handler will be called only with new errors level
138		* @param int $level see http://us1.php.net/manual/ru/function.error-reporting.php
139		*/
140	2	public function setErrorsHandlerLevel($level) {
141	2	$this->checkIsCalledBeforeStart();
142	1	$this->errorsHandlerLevel = $level;
143	1	}
144
145		/**
146		* Override PHP errors handler to PHP Console handler
147		*/
148	16	protected function initErrorsHandler() {
149	16	ini_set('display_errors', false);
150	16	error_reporting($this->errorsHandlerLevel ? : E_ALL \| E_STRICT);
151	16	$this->oldErrorsHandler = set_error_handler(array($this, 'handleError'));
152	16	register_shutdown_function(array($this, 'checkFatalErrorOnShutDown'));
153	16	$this->connector->registerFlushOnShutDown();
154	16	}
155
156		/**
157		* Method is called by register_shutdown_function(), it's required to handle fatal PHP errors. Never call it manually.
158		* @codeCoverageIgnore
159		*/
160		public function checkFatalErrorOnShutDown() {
161		$error = error_get_last();
162		if($error) {
		0 ignored issues – show Bug Best Practice introduced 2016-08-23 12:33 UTC by Report Bug Copy Issue Report The expression `$error` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
163		ini_set('memory_limit', memory_get_usage(true) + 1000000); // if memory limit exceeded
164		$this->callOldHandlers = false;
165		$this->handleError($error['type'], $error['message'], $error['file'], $error['line'], null, 1);
166		}
167		}
168
169		/**
170		* Handle error data
171		* @param int\|null $code
172		* @param string\|null $text
173		* @param string\|null $file
174		* @param int\|null $line
175		* @param null $context
176		* @param int\|array $ignoreTraceCalls Ignore tracing classes by name prefix `array('PhpConsole')` or fixed number of calls to ignore
177		*/
178	7	public function handleError($code = null, $text = null, $file = null, $line = null, $context = null, $ignoreTraceCalls = 0) {
179	7	if(!$this->isStarted \|\| error_reporting() === 0 \|\| $this->isHandlingDisabled() \|\| ($this->errorsHandlerLevel && !($code & $this->errorsHandlerLevel))) {
180	4	return;
181		}
182	5	$this->onHandlingStart();
183	5	$this->connector->getErrorsDispatcher()->dispatchError($code, $text, $file, $line, is_numeric($ignoreTraceCalls) ? $ignoreTraceCalls + 1 : $ignoreTraceCalls);
184	5	if($this->oldErrorsHandler && $this->callOldHandlers) {
185	4	call_user_func_array($this->oldErrorsHandler, array($code, $text, $file, $line, $context));
186		}
187	5	$this->onHandlingComplete();
188	5	}
189
190		/**
191		* Method is called before handling any error or exception
192		*/
193	9	protected function onHandlingStart() {
194	9	$this->recursiveHandlingLevel++;
195	9	}
196
197		/**
198		* Method is called after handling any error or exception
199		*/
200	9	protected function onHandlingComplete() {
201	9	$this->recursiveHandlingLevel--;
202	9	}
203
204		/**
205		* Check if errors/exception handling is disabled
206		* @return bool
207		*/
208	10	protected function isHandlingDisabled() {
209	10	return $this->recursiveHandlingLevel >= static::ERRORS_RECURSION_LIMIT;
210		}
211
212		/**
213		* Handle exception object
214		* @param \Exception\|\Throwable $exception
215		*/
216	5	public function handleException($exception) {
217	5	if(!$this->isStarted \|\| $this->isHandlingDisabled()) {
218	2	return;
219		}
220		try {
221	4	$this->onHandlingStart();
222	4	$this->connector->getErrorsDispatcher()->dispatchException($exception);
223	4	if($this->oldExceptionsHandler && $this->callOldHandlers) {
224	4	call_user_func($this->oldExceptionsHandler, $exception);
225		}
226		}
227		catch(\Throwable $internalException) {
		0 ignored issues – show Bug introduced 2016-08-23 12:33 UTC by Report Bug Copy Issue Report The class `Throwable` does not exist. Did you forget a USE statement, or did you not list all dependencies? Scrutinizer analyzes your `composer.json`/`composer.lock` file if available to determine the classes, and functions that are defined by your dependencies. It seems like the listed class was neither found in your dependencies, nor was it found in the analyzed files in your repository. If you are using some other form of dependency management, you might want to disable this analysis. Loading history...
228		$this->handleException($internalException);
229		}
230		catch(\Exception $internalException) {
231		$this->handleException($internalException);
232		}
233	4	$this->onHandlingComplete();
234	4	}
235
236		/**
237		* Handle debug data
238		* @param mixed $data
239		* @param string\|null $tags Tags separated by dot, e.g. "low.db.billing"
240		* @param int\|array $ignoreTraceCalls Ignore tracing classes by name prefix `array('PhpConsole')` or fixed number of calls to ignore
241		*/
242	1	public function debug($data, $tags = null, $ignoreTraceCalls = 0) {
243	1	if($this->connector->isActiveClient()) {
244	1	$this->connector->getDebugDispatcher()->dispatchDebug($data, $tags, is_numeric($ignoreTraceCalls) ? $ignoreTraceCalls + 1 : $ignoreTraceCalls);
245		}
246	1	}
247		}
248

barbushin / php-console

Push — master ( b0f5d7...c171ec )

Handler::__clone() A

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