ErrorHandler::setUserErrorClass() - Code Metrics - Inspection of "Documentation type inheritance" - overblog/GraphQLBundle - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#275)

by Hugo

created 2018-01-14 08:58 UTC

ErrorHandler::setUserErrorClass() A

↳ Parent: ErrorHandler::createErrorFormatter()

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	6
ccs	3
cts	3
cp	1
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	1
crap	1

<?php

namespace Overblog\GraphQLBundle\Error;

use GraphQL\Error\ClientAware;
use GraphQL\Error\Debug;
use GraphQL\Error\Error as GraphQLError;
use GraphQL\Error\FormattedError;
use GraphQL\Error\UserError as GraphQLUserError;
use GraphQL\Executor\ExecutionResult;
use Overblog\GraphQLBundle\Event\ErrorFormattingEvent;
use Overblog\GraphQLBundle\Event\Events;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;

class ErrorHandler
{
    const DEFAULT_ERROR_MESSAGE = 'Internal server Error';

    /** @var EventDispatcherInterface */
    private $dispatcher;

    /** @var string */
    private $internalErrorMessage;

    /** @var array */
    private $exceptionMap;

    /** @var bool */
    private $mapExceptionsToParent;

    public function __construct(
        EventDispatcherInterface $dispatcher,
        $internalErrorMessage = null,
        array $exceptionMap = [],
        $mapExceptionsToParent = false
    ) {
        $this->dispatcher = $dispatcher;
        if (empty($internalErrorMessage)) {
            $internalErrorMessage = self::DEFAULT_ERROR_MESSAGE;
        }
        $this->internalErrorMessage = $internalErrorMessage;
        $this->exceptionMap = $exceptionMap;
        $this->mapExceptionsToParent = $mapExceptionsToParent;
    }

    public function handleErrors(ExecutionResult $executionResult, $throwRawException = false, $debug = false)
    {
        $errorFormatter = $this->createErrorFormatter($debug);
        $executionResult->setErrorFormatter($errorFormatter);
        $exceptions = $this->treatExceptions($executionResult->errors, $throwRawException);
        $executionResult->errors = $exceptions['errors'];
        if (!empty($exceptions['extensions']['warnings'])) {
            $executionResult->extensions['warnings'] = array_map($errorFormatter, $exceptions['extensions']['warnings']);
        }
    }

    private function createErrorFormatter($debug = false)
    {
        $debugMode = false;
        if ($debug) {
            $debugMode = Debug::INCLUDE_TRACE | Debug::INCLUDE_DEBUG_MESSAGE;
        }

        return function (GraphQLError $error) use ($debugMode) {
            $event = new ErrorFormattingEvent($error, FormattedError::createFromException($error, $debugMode, $this->internalErrorMessage));
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
            $this->dispatcher->dispatch(Events::ERROR_FORMATTING, $event);

            return $event->getFormattedError()->getArrayCopy();
        };
    }

    /**
     * @param GraphQLError[] $errors
     * @param bool           $throwRawException
     *
     * @return array
     *
     * @throws \Error|\Exception
     */
    private function treatExceptions(array $errors, $throwRawException)
    {
        $treatedExceptions = [
            'errors' => [],
            'extensions' => [
                'warnings' => [],
            ],
        ];

        /** @var GraphQLError $error */
        foreach ($this->flattenErrors($errors) as $error) {
            $rawException = $this->convertException($error->getPrevious());

            // raw GraphQL Error or InvariantViolation exception
            if (null === $rawException) {
                $treatedExceptions['errors'][] = $error;
                continue;
            }

            // recreate a error with converted exception
            $errorWithConvertedException = new GraphQLError(
                $error->getMessage(),
                $error->nodes,
                $error->getSource(),
                $error->getPositions(),
                $error->path,
                $rawException
            );

            // user error
            if ($rawException instanceof GraphQLUserError) {
                $treatedExceptions['errors'][] = $errorWithConvertedException;
                continue;
            }

            // user warning
            if ($rawException instanceof UserWarning) {
                $treatedExceptions['extensions']['warnings'][] = $errorWithConvertedException;
                continue;
            }

            // if is a catch exception wrapped in Error
            if ($throwRawException) {
                throw $rawException;
            }

            $treatedExceptions['errors'][] = $errorWithConvertedException;
        }

        return $treatedExceptions;
    }

    /**
     * @param GraphQLError[] $errors
     *
     * @return GraphQLError[]
     */
    private function flattenErrors(array $errors)
    {
        $flattenErrors = [];

        foreach ($errors as $error) {
            $rawException = $error->getPrevious();
            // multiple errors
            if ($rawException instanceof UserErrors) {
                $rawExceptions = $rawException;
                foreach ($rawExceptions->getErrors() as $rawException) {
                    $flattenErrors[] = GraphQLError::createLocatedError($rawException, $error->nodes, $error->path);
                }
            } else {
                $flattenErrors[] = $error;
            }
        }

        return $flattenErrors;
    }

    /**
     * Tries to convert a raw exception into a user warning or error
     * that is displayed to the user.
     *
     * @param \Exception|\Error $rawException
     *
     * @return \Exception|\Error
     */
    private function convertException($rawException = null)
    {
        if (null === $rawException || $rawException instanceof ClientAware) {
            return $rawException;
        }

        $errorClass = $this->findErrorClass($rawException);
        if (null !== $errorClass) {
            return new $errorClass($rawException->getMessage(), $rawException->getCode(), $rawException);
        }

        return $rawException;
    }

    /**
     * @param \Exception|\Error $rawException
     *
     * @return string|null
     */
    private function findErrorClass($rawException)
    {
        $rawExceptionClass = get_class($rawException);
        if (isset($this->exceptionMap[$rawExceptionClass])) {
            return $this->exceptionMap[$rawExceptionClass];
        }

        if ($this->mapExceptionsToParent) {
            return $this->findErrorClassUsingParentException($rawException);
        }

        return null;
    }

    /**
     * @param \Exception|\Error $rawException
     *
     * @return string|null
     */
    private function findErrorClassUsingParentException($rawException)
    {
        foreach ($this->exceptionMap as $rawExceptionClass => $errorClass) {
            if ($rawException instanceof $rawExceptionClass) {
                return $errorClass;
            }
        }

        return null;
    }
}


1		<?php
2
3		namespace Overblog\GraphQLBundle\Error;
4
5		use GraphQL\Error\ClientAware;
6		use GraphQL\Error\Debug;
7		use GraphQL\Error\Error as GraphQLError;
8		use GraphQL\Error\FormattedError;
9		use GraphQL\Error\UserError as GraphQLUserError;
10		use GraphQL\Executor\ExecutionResult;
11		use Overblog\GraphQLBundle\Event\ErrorFormattingEvent;
12		use Overblog\GraphQLBundle\Event\Events;
13		use Symfony\Component\EventDispatcher\EventDispatcherInterface;
14
15		class ErrorHandler
16		{
17		const DEFAULT_ERROR_MESSAGE = 'Internal server Error';
18
19		/** @var EventDispatcherInterface */
20		private $dispatcher;
21
22		/** @var string */
23		private $internalErrorMessage;
24
25		/** @var array */
26		private $exceptionMap;
27
28		/** @var bool */
29		private $mapExceptionsToParent;
30
31	74	public function __construct(
32		EventDispatcherInterface $dispatcher,
33		$internalErrorMessage = null,
34		array $exceptionMap = [],
35		$mapExceptionsToParent = false
36		) {
37	74	$this->dispatcher = $dispatcher;
38	74	if (empty($internalErrorMessage)) {
39	15	$internalErrorMessage = self::DEFAULT_ERROR_MESSAGE;
40		}
41	74	$this->internalErrorMessage = $internalErrorMessage;
42	74	$this->exceptionMap = $exceptionMap;
43	74	$this->mapExceptionsToParent = $mapExceptionsToParent;
44	74	}
45
46	73	public function handleErrors(ExecutionResult $executionResult, $throwRawException = false, $debug = false)
47		{
48	73	$errorFormatter = $this->createErrorFormatter($debug);
49	73	$executionResult->setErrorFormatter($errorFormatter);
50	73	$exceptions = $this->treatExceptions($executionResult->errors, $throwRawException);
51	70	$executionResult->errors = $exceptions['errors'];
52	70	if (!empty($exceptions['extensions']['warnings'])) {
53	7	$executionResult->extensions['warnings'] = array_map($errorFormatter, $exceptions['extensions']['warnings']);
54		}
55	70	}
56
57	73	private function createErrorFormatter($debug = false)
58		{
59	73	$debugMode = false;
60	73	if ($debug) {
61	1	$debugMode = Debug::INCLUDE_TRACE \| Debug::INCLUDE_DEBUG_MESSAGE;
62		}
63
64	73	return function (GraphQLError $error) use ($debugMode) {
65	23	$event = new ErrorFormattingEvent($error, FormattedError::createFromException($error, $debugMode, $this->internalErrorMessage));
		0 ignored issues – show Documentation introduced 2017-12-24 19:41 UTC by Report Bug Copy Issue Report `$error` is of type `object<GraphQL\Error\Error>`, but the function expects a `object<Throwable>`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
66	23	$this->dispatcher->dispatch(Events::ERROR_FORMATTING, $event);
67
68	23	return $event->getFormattedError()->getArrayCopy();
69	73	};
70		}
71
72		/**
73		* @param GraphQLError[] $errors
74		* @param bool $throwRawException
75		*
76		* @return array
77		*
78		* @throws \Error\|\Exception
79		*/
80	73	private function treatExceptions(array $errors, $throwRawException)
81		{
82		$treatedExceptions = [
83	73	'errors' => [],
84		'extensions' => [
85		'warnings' => [],
86		],
87		];
88
89		/** @var GraphQLError $error */
90	73	foreach ($this->flattenErrors($errors) as $error) {
91	26	$rawException = $this->convertException($error->getPrevious());
92
93		// raw GraphQL Error or InvariantViolation exception
94	26	if (null === $rawException) {
95	9	$treatedExceptions['errors'][] = $error;
96	9	continue;
97		}
98
99		// recreate a error with converted exception
100	18	$errorWithConvertedException = new GraphQLError(
101	18	$error->getMessage(),
102	18	$error->nodes,
103	18	$error->getSource(),
104	18	$error->getPositions(),
105	18	$error->path,
106	18	$rawException
107		);
108
109		// user error
110	18	if ($rawException instanceof GraphQLUserError) {
111	8	$treatedExceptions['errors'][] = $errorWithConvertedException;
112	8	continue;
113		}
114
115		// user warning
116	11	if ($rawException instanceof UserWarning) {
117	7	$treatedExceptions['extensions']['warnings'][] = $errorWithConvertedException;
118	7	continue;
119		}
120
121		// if is a catch exception wrapped in Error
122	5	if ($throwRawException) {
123	3	throw $rawException;
124		}
125
126	2	$treatedExceptions['errors'][] = $errorWithConvertedException;
127		}
128
129	70	return $treatedExceptions;
130		}
131
132		/**
133		* @param GraphQLError[] $errors
134		*
135		* @return GraphQLError[]
136		*/
137	73	private function flattenErrors(array $errors)
138		{
139	73	$flattenErrors = [];
140
141	73	foreach ($errors as $error) {
142	26	$rawException = $error->getPrevious();
143		// multiple errors
144	26	if ($rawException instanceof UserErrors) {
145	1	$rawExceptions = $rawException;
146	1	foreach ($rawExceptions->getErrors() as $rawException) {
147	1	$flattenErrors[] = GraphQLError::createLocatedError($rawException, $error->nodes, $error->path);
148		}
149		} else {
150	26	$flattenErrors[] = $error;
151		}
152		}
153
154	73	return $flattenErrors;
155		}
156
157		/**
158		* Tries to convert a raw exception into a user warning or error
159		* that is displayed to the user.
160		*
161		* @param \Exception\|\Error $rawException
162		*
163		* @return \Exception\|\Error
164		*/
165	26	private function convertException($rawException = null)
166		{
167	26	if (null === $rawException \|\| $rawException instanceof ClientAware) {
168	14	return $rawException;
169		}
170
171	13	$errorClass = $this->findErrorClass($rawException);
172	13	if (null !== $errorClass) {
173	8	return new $errorClass($rawException->getMessage(), $rawException->getCode(), $rawException);
174		}
175
176	5	return $rawException;
177		}
178
179		/**
180		* @param \Exception\|\Error $rawException
181		*
182		* @return string\|null
183		*/
184	13	private function findErrorClass($rawException)
185		{
186	13	$rawExceptionClass = get_class($rawException);
187	13	if (isset($this->exceptionMap[$rawExceptionClass])) {
188	7	return $this->exceptionMap[$rawExceptionClass];
189		}
190
191	6	if ($this->mapExceptionsToParent) {
192	2	return $this->findErrorClassUsingParentException($rawException);
193		}
194
195	4	return null;
196		}
197
198		/**
199		* @param \Exception\|\Error $rawException
200		*
201		* @return string\|null
202		*/
203	2	private function findErrorClassUsingParentException($rawException)
204		{
205	2	foreach ($this->exceptionMap as $rawExceptionClass => $errorClass) {
206	1	if ($rawException instanceof $rawExceptionClass) {
207	1	return $errorClass;
208		}
209		}
210
211	1	return null;
212		}
213		}
214

overblog / GraphQLBundle

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Pull Request — master (#275)

ErrorHandler::setUserErrorClass() A

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