UserProvider - Code Metrics - Inspection of "Oauth2 implementation" - svbackend/my-art-lib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#5)

by Valentyn

created 2018-04-03 08:09 UTC

UserProvider A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	66
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

Importance

Changes

Metric	Value
wmc	9
lcom	1
cbo	4
dl	0
loc	66
ccs	0
cts	19
cp	0
rs	10
c	0
b	0
f	0

5 Methods

Rating	Name	Size	Complexity
A	__construct()	4	1
A	loadUserByUsername()	10	2
A	refreshUser()	16	3
A	supportsClass()	5	2
A	findUser()	4	1

<?php

namespace App\Security;

use App\Repository\UserRepository;
use App\Entity\User;
use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;

class UserProvider implements UserProviderInterface
{
    protected $userRepository;

    public function __construct(UserRepository $userRepository)
    {
        $this->userRepository = $userRepository;
    }

    /**
     * {@inheritdoc}
     */
    public function loadUserByUsername($username)
    {
        $user = $this->findUser($username);

        if (!$user) {
            throw new UsernameNotFoundException(sprintf('Username "%s" does not exist.', $username));
        }

        return $user;
    }

    /**
     * {@inheritdoc}
     */
    public function refreshUser(UserInterface $user)
    {
        if (!$this->supportsClass(get_class($user))) {
            throw new UnsupportedUserException(sprintf('Expected an instance of %s, but got "%s".', User::class, get_class($user)));
        }

        /**
         * @var $user User
         */

        if (null === $reloadedUser = $this->userRepository->findBy(['id' => $user->getId()])) {
            throw new UsernameNotFoundException(sprintf('User with ID "%s" could not be reloaded.', $user->getId()));
        }

        return $reloadedUser;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * {@inheritdoc}
     */
    public function supportsClass($class)
    {
        $userClass = User::class;
        return $userClass === $class || is_subclass_of($class, $userClass);

    }

    /**
     * Finds a user by username.
     *
     * This method is meant to be an extension point for child classes.
     *
     * @param string $username
     *
     * @return User|null
     */
    protected function findUser($username)
    {
        return $this->userRepository->loadUserByUsername($username);
    }
}

1			<?php
2
3			namespace App\Security;
4
5			use App\Repository\UserRepository;
6			use App\Entity\User;
7			use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
8			use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
9			use Symfony\Component\Security\Core\User\UserInterface;
10			use Symfony\Component\Security\Core\User\UserProviderInterface;
11
12			class UserProvider implements UserProviderInterface
13			{
14			protected $userRepository;
15
16			public function __construct(UserRepository $userRepository)
17			{
18			$this->userRepository = $userRepository;
19			}
20
21			/**
22			* {@inheritdoc}
23			*/
24			public function loadUserByUsername($username)
25			{
26			$user = $this->findUser($username);
27
28			if (!$user) {
29			throw new UsernameNotFoundException(sprintf('Username "%s" does not exist.', $username));
30			}
31
32			return $user;
33			}
34
35			/**
36			* {@inheritdoc}
37			*/
38			public function refreshUser(UserInterface $user)
39			{
40			if (!$this->supportsClass(get_class($user))) {
41			throw new UnsupportedUserException(sprintf('Expected an instance of %s, but got "%s".', User::class, get_class($user)));
42			}
43
44			/**
45			* @var $user User
46			*/
47
48			if (null === $reloadedUser = $this->userRepository->findBy(['id' => $user->getId()])) {
49			throw new UsernameNotFoundException(sprintf('User with ID "%s" could not be reloaded.', $user->getId()));
50			}
51
52			return $reloadedUser;
			0 ignored issues – show Bug Best Practice introduced 2018-04-02 05:59 UTC by Report Bug Copy Issue Report The return type of `return $reloadedUser;` (`App\Entity\User[]`) is incompatible with the return type declared by the interface `Symfony\Component\Securi...rInterface::refreshUser` of type `Symfony\Component\Security\Core\User\UserInterface`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
53			}
54
55			/**
56			* {@inheritdoc}
57			*/
58			public function supportsClass($class)
59			{
60			$userClass = User::class;
61			return $userClass === $class \|\| is_subclass_of($class, $userClass);
			0 ignored issues – show Bug introduced 2018-04-02 05:59 UTC by Report Bug Copy Issue Report Due to PHP Bug #53727, `is_subclass_of` might return inconsistent results on some PHP versions if `$userClass` can be an interface. If so, you could instead use `ReflectionClass::implementsInterface`. Loading history...
62			}
63
64			/**
65			* Finds a user by username.
66			*
67			* This method is meant to be an extension point for child classes.
68			*
69			* @param string $username
70			*
71			* @return User\|null
72			*/
73			protected function findUser($username)
74			{
75			return $this->userRepository->loadUserByUsername($username);
76			}
77			}

svbackend / my-art-lib

Pull Request — master (#5)

UserProvider A

Complexity

Size/Duplication

Coupling/Cohesion

Test Coverage

Importance

5 Methods

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