Issues in AvroValidator.php - All Issues - Inspection of "Daily Inspection: Merge "Add GENDER support to pro..." - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (939199)

unknown

created 2016-11-04 17:19 UTC

includes/utils/AvroValidator.php (7 issues)

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Bug 7

Severity

Erik Bernhardson 7

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<?php
/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 */

/**
 * Generate error strings for data that doesn't match the specified
 * Avro schema. This is very similar to AvroSchema::is_valid_datum(),
 * but returns error messages instead of a boolean.
 *
 * @since 1.26
 * @author Erik Bernhardson <[email protected]>
 * @copyright © 2015 Erik Bernhardson and Wikimedia Foundation.
 */
class AvroValidator {
	/**
	 * @param AvroSchema $schema The rules to conform to.
	 * @param mixed $datum The value to validate against $schema.
	 * @return string|string[] An error or list of errors in the
	 *  provided $datum. When no errors exist the empty array is
	 *  returned.
	 */
	public static function getErrors( AvroSchema $schema, $datum ) {
		switch ( $schema->type ) {
		case AvroSchema::NULL_TYPE:
			if ( !is_null( $datum ) ) {
				return self::wrongType( 'null', $datum );
			}
			return [];
		case AvroSchema::BOOLEAN_TYPE:
			if ( !is_bool( $datum ) ) {
				return self::wrongType( 'boolean', $datum );
			}
			return [];
		case AvroSchema::STRING_TYPE:
		case AvroSchema::BYTES_TYPE:
			if ( !is_string( $datum ) ) {
				return self::wrongType( 'string', $datum );
			}
			return [];
		case AvroSchema::INT_TYPE:
			if ( !is_int( $datum ) ) {
				return self::wrongType( 'integer', $datum );
			}
			if ( AvroSchema::INT_MIN_VALUE > $datum
				|| $datum > AvroSchema::INT_MAX_VALUE
			) {
				return self::outOfRange(
					AvroSchema::INT_MIN_VALUE,
					AvroSchema::INT_MAX_VALUE,
					$datum
				);
			}
			return [];
		case AvroSchema::LONG_TYPE:
			if ( !is_int( $datum ) ) {
				return self::wrongType( 'integer', $datum );
			}
			if ( AvroSchema::LONG_MIN_VALUE > $datum
				|| $datum > AvroSchema::LONG_MAX_VALUE
			) {
				return self::outOfRange(
					AvroSchema::LONG_MIN_VALUE,
					AvroSchema::LONG_MAX_VALUE,
					$datum
				);
			}
			return [];
		case AvroSchema::FLOAT_TYPE:
		case AvroSchema::DOUBLE_TYPE:
			if ( !is_float( $datum ) && !is_int( $datum ) ) {
				return self::wrongType( 'float or integer', $datum );
			}
			return [];
		case AvroSchema::ARRAY_SCHEMA:
			if ( !is_array( $datum ) ) {
				return self::wrongType( 'array', $datum );
			}
			$errors = [];
			foreach ( $datum as $d ) {
				$result = self::getErrors( $schema->items(), $d );
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
				if ( $result ) {
					$errors[] = $result;
				}
			}
			return $errors;
		case AvroSchema::MAP_SCHEMA:
			if ( !is_array( $datum ) ) {
				return self::wrongType( 'array', $datum );
			}
			$errors = [];
			foreach ( $datum as $k => $v ) {
				if ( !is_string( $k ) ) {
					$errors[] = self::wrongType( 'string key', $k );
				}
				$result = self::getErrors( $schema->values(), $v );
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
				if ( $result ) {
					$errors[$k] = $result;
				}
			}
			return $errors;
		case AvroSchema::UNION_SCHEMA:
			$errors = [];
			foreach ( $schema->schemas() as $schema ) {
				$result = self::getErrors( $schema, $datum );
				if ( !$result ) {
					return [];
				}
				$errors[] = $result;
			}
			if ( $errors ) {
				return [ "Expected any one of these to be true", $errors ];
			}
			return "No schemas provided to union";
		case AvroSchema::ENUM_SCHEMA:
			if ( !in_array( $datum, $schema->symbols() ) ) {
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
				$symbols = implode( ', ', $schema->symbols );

				return "Expected one of $symbols but recieved $datum";
			}
			return [];
		case AvroSchema::FIXED_SCHEMA:
			if ( !is_string( $datum ) ) {
				return self::wrongType( 'string', $datum );
			}
			$len = strlen( $datum );
			if ( $len !== $schema->size() ) {
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
				return "Expected string of length {$schema->size()}, "
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
					. "but recieved one of length $len";
			}
			return [];
		case AvroSchema::RECORD_SCHEMA:
		case AvroSchema::ERROR_SCHEMA:
		case AvroSchema::REQUEST_SCHEMA:
			if ( !is_array( $datum ) ) {
				return self::wrongType( 'array', $datum );
			}
			$errors = [];
			foreach ( $schema->fields() as $field ) {
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
				$name = $field->name();
				if ( !array_key_exists( $name, $datum ) ) {
					$errors[$name] = 'Missing expected field';
					continue;
				}
				$result = self::getErrors( $field->type(), $datum[$name] );
				if ( $result ) {
					$errors[$name] = $result;
				}
			}
			return $errors;
		default:
			return "Unknown avro schema type: {$schema->type}";
		}
	}

	public static function typeOf( $datum ) {
		return is_object( $datum ) ? get_class( $datum ) : gettype( $datum );
	}

	public static function wrongType( $expected, $datum ) {
		return "Expected $expected, but recieved " . self::typeOf( $datum );
	}

	public static function outOfRange( $min, $max, $datum ) {
		return "Expected value between $min and $max, but recieved $datum";
	}
}


1		<?php
2		/**
3		* This program is free software; you can redistribute it and/or modify
4		* it under the terms of the GNU General Public License as published by
5		* the Free Software Foundation; either version 2 of the License, or
6		* (at your option) any later version.
7		*
8		* This program is distributed in the hope that it will be useful,
9		* but WITHOUT ANY WARRANTY; without even the implied warranty of
10		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11		* GNU General Public License for more details.
12		*
13		* You should have received a copy of the GNU General Public License along
14		* with this program; if not, write to the Free Software Foundation, Inc.,
15		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
16		* http://www.gnu.org/copyleft/gpl.html
17		*
18		* @file
19		*/
20
21		/**
22		* Generate error strings for data that doesn't match the specified
23		* Avro schema. This is very similar to AvroSchema::is_valid_datum(),
24		* but returns error messages instead of a boolean.
25		*
26		* @since 1.26
27		* @author Erik Bernhardson <[email protected]>
28		* @copyright © 2015 Erik Bernhardson and Wikimedia Foundation.
29		*/
30		class AvroValidator {
31		/**
32		* @param AvroSchema $schema The rules to conform to.
33		* @param mixed $datum The value to validate against $schema.
34		* @return string\|string[] An error or list of errors in the
35		* provided $datum. When no errors exist the empty array is
36		* returned.
37		*/
38		public static function getErrors( AvroSchema $schema, $datum ) {
39		switch ( $schema->type ) {
40		case AvroSchema::NULL_TYPE:
41		if ( !is_null( $datum ) ) {
42		return self::wrongType( 'null', $datum );
43		}
44		return [];
45		case AvroSchema::BOOLEAN_TYPE:
46		if ( !is_bool( $datum ) ) {
47		return self::wrongType( 'boolean', $datum );
48		}
49		return [];
50		case AvroSchema::STRING_TYPE:
51		case AvroSchema::BYTES_TYPE:
52		if ( !is_string( $datum ) ) {
53		return self::wrongType( 'string', $datum );
54		}
55		return [];
56	View Code Duplication	case AvroSchema::INT_TYPE:
57		if ( !is_int( $datum ) ) {
58		return self::wrongType( 'integer', $datum );
59		}
60		if ( AvroSchema::INT_MIN_VALUE > $datum
61		\|\| $datum > AvroSchema::INT_MAX_VALUE
62		) {
63		return self::outOfRange(
64		AvroSchema::INT_MIN_VALUE,
65		AvroSchema::INT_MAX_VALUE,
66		$datum
67		);
68		}
69		return [];
70	View Code Duplication	case AvroSchema::LONG_TYPE:
71		if ( !is_int( $datum ) ) {
72		return self::wrongType( 'integer', $datum );
73		}
74		if ( AvroSchema::LONG_MIN_VALUE > $datum
75		\|\| $datum > AvroSchema::LONG_MAX_VALUE
76		) {
77		return self::outOfRange(
78		AvroSchema::LONG_MIN_VALUE,
79		AvroSchema::LONG_MAX_VALUE,
80		$datum
81		);
82		}
83		return [];
84		case AvroSchema::FLOAT_TYPE:
85		case AvroSchema::DOUBLE_TYPE:
86		if ( !is_float( $datum ) && !is_int( $datum ) ) {
87		return self::wrongType( 'float or integer', $datum );
88		}
89		return [];
90		case AvroSchema::ARRAY_SCHEMA:
91		if ( !is_array( $datum ) ) {
92		return self::wrongType( 'array', $datum );
93		}
94		$errors = [];
95		foreach ( $datum as $d ) {
96		$result = self::getErrors( $schema->items(), $d );
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `AvroSchema` as the method `items()` does only exist in the following sub-classes of `AvroSchema`: `AvroArraySchema`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
97		if ( $result ) {
98		$errors[] = $result;
99		}
100		}
101		return $errors;
102		case AvroSchema::MAP_SCHEMA:
103		if ( !is_array( $datum ) ) {
104		return self::wrongType( 'array', $datum );
105		}
106		$errors = [];
107		foreach ( $datum as $k => $v ) {
108		if ( !is_string( $k ) ) {
109		$errors[] = self::wrongType( 'string key', $k );
110		}
111		$result = self::getErrors( $schema->values(), $v );
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `AvroSchema` as the method `values()` does only exist in the following sub-classes of `AvroSchema`: `AvroMapSchema`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
112		if ( $result ) {
113		$errors[$k] = $result;
114		}
115		}
116		return $errors;
117		case AvroSchema::UNION_SCHEMA:
118		$errors = [];
119		foreach ( $schema->schemas() as $schema ) {
120		$result = self::getErrors( $schema, $datum );
121		if ( !$result ) {
122		return [];
123		}
124		$errors[] = $result;
125		}
126		if ( $errors ) {
127		return [ "Expected any one of these to be true", $errors ];
128		}
129		return "No schemas provided to union";
130		case AvroSchema::ENUM_SCHEMA:
131		if ( !in_array( $datum, $schema->symbols() ) ) {
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `AvroSchema` as the method `symbols()` does only exist in the following sub-classes of `AvroSchema`: `AvroEnumSchema`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
132		$symbols = implode( ', ', $schema->symbols );
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this The property `symbols` does not seem to exist in `AvroSchema`. An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name. If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading. Loading history...
133		return "Expected one of $symbols but recieved $datum";
134		}
135		return [];
136		case AvroSchema::FIXED_SCHEMA:
137		if ( !is_string( $datum ) ) {
138		return self::wrongType( 'string', $datum );
139		}
140		$len = strlen( $datum );
141		if ( $len !== $schema->size() ) {
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `AvroSchema` as the method `size()` does only exist in the following sub-classes of `AvroSchema`: `AvroFixedSchema`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
142		return "Expected string of length {$schema->size()}, "
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `AvroSchema` as the method `size()` does only exist in the following sub-classes of `AvroSchema`: `AvroFixedSchema`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
143		. "but recieved one of length $len";
144		}
145		return [];
146		case AvroSchema::RECORD_SCHEMA:
147		case AvroSchema::ERROR_SCHEMA:
148		case AvroSchema::REQUEST_SCHEMA:
149		if ( !is_array( $datum ) ) {
150		return self::wrongType( 'array', $datum );
151		}
152		$errors = [];
153		foreach ( $schema->fields() as $field ) {
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `AvroSchema` as the method `fields()` does only exist in the following sub-classes of `AvroSchema`: `AvroRecordSchema`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
154		$name = $field->name();
155		if ( !array_key_exists( $name, $datum ) ) {
156		$errors[$name] = 'Missing expected field';
157		continue;
158		}
159		$result = self::getErrors( $field->type(), $datum[$name] );
160		if ( $result ) {
161		$errors[$name] = $result;
162		}
163		}
164		return $errors;
165		default:
166		return "Unknown avro schema type: {$schema->type}";
167		}
168		}
169
170		public static function typeOf( $datum ) {
171		return is_object( $datum ) ? get_class( $datum ) : gettype( $datum );
172		}
173
174		public static function wrongType( $expected, $datum ) {
175		return "Expected $expected, but recieved " . self::typeOf( $datum );
176		}
177
178		public static function outOfRange( $min, $max, $datum ) {
179		return "Expected value between $min and $max, but recieved $datum";
180		}
181		}
182

wikimedia / mediawiki

Branch — master (939199)

includes/utils/AvroValidator.php (7 issues)

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