ErrorHandler::__clone() - Code Metrics - Inspection of "Major refactoring" - softberg/quantum-php-core - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#182)

by Arman

created 2024-12-23 16:51 UTC

ErrorHandler::__clone() A

↳ Parent: ErrorHandler

Complexity

Conditions	1
Paths	1

Size

Total Lines	2
Code Lines	0

Duplication

Lines	0
Ratio	0 %

Importance

Changes

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

<?php

/**
 * Quantum PHP Framework
 *
 * An open source software development framework for PHP
 *
 * @package Quantum
 * @author Arman Ag. <[email protected]>
 * @copyright Copyright (c) 2018 Softberg LLC (https://softberg.org)
 * @link http://quantum.softberg.org/
 * @since 2.9.5
 */

namespace Quantum\Tracer;

use Quantum\Exceptions\StopExecutionException;
use Quantum\Libraries\Storage\FileSystem;
use Quantum\Exceptions\ViewException;
use Quantum\Exceptions\DiException;
use Quantum\Factory\ViewFactory;
use Twig\Error\RuntimeError;
use Twig\Error\SyntaxError;
use Twig\Error\LoaderError;
use Quantum\Http\Response;
use Quantum\Logger\Logger;
use ReflectionException;
use Psr\Log\LogLevel;
use ErrorException;
use Quantum\Di\Di;
use ParseError;
use Throwable;

/**
 * Class ErrorHandler
 * @package Quantum\Tracer
 */
class ErrorHandler
{
    /**
     * Number of lines to be returned
     */
    const NUM_LINES = 10;

    /**
     * @var string[][]
     */
    const ERROR_TYPES = [
        E_ERROR => 'error',
        E_WARNING => 'warning',
        E_PARSE => 'error',
        E_NOTICE => 'notice',
        E_CORE_ERROR => 'error',
        E_CORE_WARNING => 'warning',
        E_COMPILE_ERROR => 'error',
        E_COMPILE_WARNING => 'warning',
        E_USER_ERROR => 'error',
        E_USER_WARNING => 'warning',
        E_USER_NOTICE => 'notice',
        E_STRICT => 'notice',
        E_RECOVERABLE_ERROR => 'error',
    ];

    /**
     * @var Logger
     */
    private $logger;

    /**
     * @var array
     */
    private $trace = [];

    private static $instance;

    private function __construct()
    {
        // Prevent direct instantiation
    }

    private function __clone()
    {
        // Prevent cloning
    }

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

        return self::$instance;
    }

    /**
     * @return void
     */
    public function setup(Logger $logger)
    {
        $this->logger = $logger;

        set_error_handler([$this, 'handleError']);
        set_exception_handler([$this, 'handleException']);
    }

    /**
     * @param $severity
     * @param $message
     * @param $file
     * @param $line
     * @throws ErrorException
     */
    public function handleError($severity, $message, $file, $line)
    {
        if (!(error_reporting() & $severity)) {
            return;
        }

        throw new ErrorException($message, 0, $severity, $file, $line);
    }

    /**
     * @param Throwable $e
     * @return void
     * @throws DiException
     * @throws LoaderError
     * @throws ReflectionException
     * @throws RuntimeError
     * @throws SyntaxError
     * @throws ViewException
     * @throws StopExecutionException
     */
    public function handleException(Throwable $e): void
    {
        $this->composeStackTrace($e);

        $view = ViewFactory::getInstance();

        $errorType = $this->getErrorType($e);

        if (is_debug_mode()) {
            Response::html($view->renderPartial('errors' . DS . 'trace', [
                'stackTrace' => $this->trace,
                'errorMessage' => $e->getMessage(),
                'severity' => ucfirst($errorType),
            ]));
        } else {
            $this->logError($e, $errorType);
            Response::html($view->renderPartial('errors' . DS . '500'));
        }

        Response::send();
    }

    /**
     * @param Throwable $e
     * @param string $errorType
     * @return void
     */
    private function logError(Throwable $e, string $errorType): void
    {
        if (method_exists($this->logger, $errorType)) {
            $this->logger->$errorType($e->getMessage(), ['trace' => $e->getTraceAsString()]);
        } else {
            $this->logger->error($e->getMessage(), ['trace' => $e->getTraceAsString()]);
        }
    }

    /**
     * Composes the stack trace
     * @param Throwable $e
     * @throws DiException
     * @throws ReflectionException
     */
    private function composeStackTrace(Throwable $e)
    {
        $this->trace[] = [
            'file' => $e->getFile(),
            'code' => $this->getSourceCode($e->getFile(), $e->getLine(), 'error-line'),
        ];

        foreach ($e->getTrace() as $item) {
            if (($item['class'] ?? null) === __CLASS__) {
                continue;
            }

            if (isset($item['file'])) {
                $this->trace[] = [
                    'file' => $item['file'],
                    'code' => $this->getSourceCode($item['file'], $item['line'] ?? 1, 'switch-line'),
                ];
            }
        }
    }

    /**
     * Gets the source code where the error happens
     * @param string $filename
     * @param int $lineNumber
     * @param string $className
     * @return string
     * @throws DiException
     * @throws ReflectionException
     */
    private function getSourceCode(string $filename, int $lineNumber, string $className): string
    {
        $fs = Di::get(FileSystem::class);

        $start = max($lineNumber - floor(self::NUM_LINES / 2), 1);

        $lines = $fs->getLines($filename, $start, self::NUM_LINES);

        $code = '<ol start="' . key($lines) . '">';
        foreach ($lines as $currentLineNumber => $line) {
            $highlight = $currentLineNumber === $lineNumber ? ' class="' . $className . '"' : '';
            $code .= '<li' . $highlight . '><pre>' . htmlspecialchars($line, ENT_QUOTES) . '</pre></li>';
        }
        $code .= '</ol>';

        return $code;
    }

    /**
     * Gets the error type based on the exception class
     * @param Throwable $e
     * @return string
     */
    private function getErrorType(Throwable $e): string
    {
        if ($e instanceof ErrorException) {
            return self::ERROR_TYPES[$e->getSeverity()] ?? LogLevel::ERROR;
        }

        if ($e instanceof ParseError) {
            return LogLevel::CRITICAL;
        }

        if ($e instanceof ReflectionException) {
            return LogLevel::WARNING;
        }

        return LogLevel::ERROR;
    }
}

1			<?php
2
3			/**
4			* Quantum PHP Framework
5			*
6			* An open source software development framework for PHP
7			*
8			* @package Quantum
9			* @author Arman Ag. <[email protected]>
10			* @copyright Copyright (c) 2018 Softberg LLC (https://softberg.org)
11			* @link http://quantum.softberg.org/
12			* @since 2.9.5
13			*/
14
15			namespace Quantum\Tracer;
16
17			use Quantum\Exceptions\StopExecutionException;
18			use Quantum\Libraries\Storage\FileSystem;
19			use Quantum\Exceptions\ViewException;
20			use Quantum\Exceptions\DiException;
21			use Quantum\Factory\ViewFactory;
22			use Twig\Error\RuntimeError;
23			use Twig\Error\SyntaxError;
24			use Twig\Error\LoaderError;
25			use Quantum\Http\Response;
26			use Quantum\Logger\Logger;
27			use ReflectionException;
28			use Psr\Log\LogLevel;
29			use ErrorException;
30			use Quantum\Di\Di;
31			use ParseError;
32			use Throwable;
33
34			/**
35			* Class ErrorHandler
36			* @package Quantum\Tracer
37			*/
38			class ErrorHandler
39			{
40			/**
41			* Number of lines to be returned
42			*/
43			const NUM_LINES = 10;
44
45			/**
46			* @var string[][]
47			*/
48			const ERROR_TYPES = [
49			E_ERROR => 'error',
50			E_WARNING => 'warning',
51			E_PARSE => 'error',
52			E_NOTICE => 'notice',
53			E_CORE_ERROR => 'error',
54			E_CORE_WARNING => 'warning',
55			E_COMPILE_ERROR => 'error',
56			E_COMPILE_WARNING => 'warning',
57			E_USER_ERROR => 'error',
58			E_USER_WARNING => 'warning',
59			E_USER_NOTICE => 'notice',
60			E_STRICT => 'notice',
61			E_RECOVERABLE_ERROR => 'error',
62			];
63
64			/**
65			* @var Logger
66			*/
67			private $logger;
68
69			/**
70			* @var array
71			*/
72			private $trace = [];
73
74			private static $instance;
75
76			private function __construct()
77			{
78			// Prevent direct instantiation
79			}
80
81			private function __clone()
82			{
83			// Prevent cloning
84			}
85
86			/**
87			* @return ErrorHandler
88			*/
89			public static function getInstance(): ErrorHandler
90			{
91			if (self::$instance === null) {
92			self::$instance = new self();
93			}
94
95			return self::$instance;
96			}
97
98			/**
99			* @return void
100			*/
101			public function setup(Logger $logger)
102			{
103			$this->logger = $logger;
104
105			set_error_handler([$this, 'handleError']);
106			set_exception_handler([$this, 'handleException']);
107			}
108
109			/**
110			* @param $severity
111			* @param $message
112			* @param $file
113			* @param $line
114			* @throws ErrorException
115			*/
116			public function handleError($severity, $message, $file, $line)
117			{
118			if (!(error_reporting() & $severity)) {
119			return;
120			}
121
122			throw new ErrorException($message, 0, $severity, $file, $line);
123			}
124
125			/**
126			* @param Throwable $e
127			* @return void
128			* @throws DiException
129			* @throws LoaderError
130			* @throws ReflectionException
131			* @throws RuntimeError
132			* @throws SyntaxError
133			* @throws ViewException
134			* @throws StopExecutionException
135			*/
136			public function handleException(Throwable $e): void
137			{
138			$this->composeStackTrace($e);
139
140			$view = ViewFactory::getInstance();
141
142			$errorType = $this->getErrorType($e);
143
144			if (is_debug_mode()) {
145			Response::html($view->renderPartial('errors' . DS . 'trace', [
146			'stackTrace' => $this->trace,
147			'errorMessage' => $e->getMessage(),
148			'severity' => ucfirst($errorType),
149			]));
150			} else {
151			$this->logError($e, $errorType);
152			Response::html($view->renderPartial('errors' . DS . '500'));
153			}
154
155			Response::send();
156			}
157
158			/**
159			* @param Throwable $e
160			* @param string $errorType
161			* @return void
162			*/
163			private function logError(Throwable $e, string $errorType): void
164			{
165			if (method_exists($this->logger, $errorType)) {
166			$this->logger->$errorType($e->getMessage(), ['trace' => $e->getTraceAsString()]);
167			} else {
168			$this->logger->error($e->getMessage(), ['trace' => $e->getTraceAsString()]);
169			}
170			}
171
172			/**
173			* Composes the stack trace
174			* @param Throwable $e
175			* @throws DiException
176			* @throws ReflectionException
177			*/
178			private function composeStackTrace(Throwable $e)
179			{
180			$this->trace[] = [
181			'file' => $e->getFile(),
182			'code' => $this->getSourceCode($e->getFile(), $e->getLine(), 'error-line'),
183			];
184
185			foreach ($e->getTrace() as $item) {
186			if (($item['class'] ?? null) === __CLASS__) {
187			continue;
188			}
189
190			if (isset($item['file'])) {
191			$this->trace[] = [
192			'file' => $item['file'],
193			'code' => $this->getSourceCode($item['file'], $item['line'] ?? 1, 'switch-line'),
194			];
195			}
196			}
197			}
198
199			/**
200			* Gets the source code where the error happens
201			* @param string $filename
202			* @param int $lineNumber
203			* @param string $className
204			* @return string
205			* @throws DiException
206			* @throws ReflectionException
207			*/
208			private function getSourceCode(string $filename, int $lineNumber, string $className): string
209			{
210			$fs = Di::get(FileSystem::class);
211
212			$start = max($lineNumber - floor(self::NUM_LINES / 2), 1);
213
214			$lines = $fs->getLines($filename, $start, self::NUM_LINES);
215
216			$code = '<ol start="' . key($lines) . '">';
217			foreach ($lines as $currentLineNumber => $line) {
218			$highlight = $currentLineNumber === $lineNumber ? ' class="' . $className . '"' : '';
219			$code .= '<li' . $highlight . '><pre>' . htmlspecialchars($line, ENT_QUOTES) . '</pre></li>';
220			}
221			$code .= '</ol>';
222
223			return $code;
224			}
225
226			/**
227			* Gets the error type based on the exception class
228			* @param Throwable $e
229			* @return string
230			*/
231			private function getErrorType(Throwable $e): string
232			{
233			if ($e instanceof ErrorException) {
234			return self::ERROR_TYPES[$e->getSeverity()] ?? LogLevel::ERROR;
235			}
236
237			if ($e instanceof ParseError) {
238			return LogLevel::CRITICAL;
239			}
240
241			if ($e instanceof ReflectionException) {
242			return LogLevel::WARNING;
243			}
244
245			return LogLevel::ERROR;
246			}
247			}

softberg / quantum-php-core

Pull Request — master (#182)

ErrorHandler::__clone() A

Complexity

Size

Duplication

Importance

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