AbstractStatisticsLoader - Code Metrics - Inspection of "Updated server list" - Maelstromeous/ps2alerts-api - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 1768c8...189bb6 )

by Matthew

created 2016-01-02 00:54 UTC

AbstractStatisticsLoader A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	199
Duplicated Lines	6.03 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes	12
Bugs	0	Features	5

Metric	Value
c	12
b	0
f	5
dl	12
loc	199
wmc	30
lcom	1
cbo	3
rs	10

6 Methods

Rating	Name	Duplication	Size	Complexity
A	setFlags()	0	4	1
A	getFlags()	0	4	1
A	readStatistics()	0	18	2
D	appendRedisKey()	9	36	9
C	processPostVars()	3	27	7
C	setupQueryObject()	0	49	10

How to fix Duplicated Code

<?php

namespace Ps2alerts\Api\Loader\Statistics;

use Ps2alerts\Api\Loader\AbstractLoader;
use Ps2alerts\Api\QueryObjects\QueryObject;

abstract class AbstractStatisticsLoader extends AbstractLoader
{
    /**
     * Flags set for workarounds
     *
     * @var string
     */
    protected $flags;

    /**
     * Allows setting of workaround flags
     *
     * @param string $flag
     */
    public function setFlags($flag)
    {
        $this->flags = $flag;
    }

    /**
     * Retrieves workaround flags
     *
     * @return string
     */
    public function getFlags()
    {
        return $this->flags;
    }

    /**
     * @var string
     */
    protected $type;

    /**
     * Returns the top X of a particular statistic
     *
     * @param array $post POST variables from the request
     *
     * @return array
     */
    public function readStatistics($post)
    {
        $redisKey = "{$this->getCacheNamespace()}:{$this->getType()}";
        $redisKey = $this->appendRedisKey($post, $redisKey);
        $post = $this->processPostVars($post);

        if ($this->checkRedis($redisKey)) {
            return $this->getFromRedis($redisKey);
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());
}
        }

        $queryObject = new QueryObject;
        $queryObject = $this->setupQueryObject($queryObject, $post);
function acceptsInteger($int) { }

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

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);

        return $this->cacheAndReturn(
            $this->repository->read($queryObject),
class MyClass { }

$x = new MyClass();
$x->foo = true;
            $redisKey
        );
    }

    /**
     * Build a redis key based off inputs provided by the POST request
     *
     * @param  array  $post
     * @param  string $redisKey Redis Key to append to
     *
     * @return string
     */
    public function appendRedisKey($post, $redisKey)
    {
        if (! empty($post['selects'])) {
            $whereMD5 = md5($post['selects']);
            $redisKey .= "/select{$whereMD5}";
        }

        if (! empty($post['wheres'])) {
            $whereMD5 = md5($post['wheres']);
            $redisKey .= "/where{$whereMD5}";
        }

        if (! empty($post['whereIns'])) {
            $whereInMD5 = md5($post['whereIns']);
            $redisKey .= "/whereIn{$whereInMD5}";
        }

        if (! empty($post['orderBy'])) {
            $orderMD5 = md5($post['orderBy']);
            $redisKey .= "/order{$orderMD5}";
        }
        if (! empty($post['limit'])) {

            // Enforce a max limit
            if ($post['limit'] > 50) {
                $post['limit'] = 50;
            }
        }

        if (empty($post['limit']) || ! isset($post['limit'])) {

            $post['limit'] = 10;
        }

        $redisKey .= "/limit{$post['limit']}";

        return $redisKey;
    }

    /**
     * De-encode the POST vars for use
     *
     * @param  array $post
     *
     * @return array
     */
    public function processPostVars($post)
    {
        if (! empty($post['wheres'])) {
            $return['wheres'] = json_decode($post['wheres'], true);
foreach ($collection as $item) {
    $myArray['foo'] = $item->getFoo();

    if ($item->hasBar()) {
        $myArray['bar'] = $item->getBar();
    }

    // do something with $myArray
}
            $this->getLogDriver()->addDebug(json_encode($return['wheres']));
        }

        if (! empty($post['whereIns'])) {
            $return['whereIns'] = json_decode($post['whereIns'], true);
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
        }

        if (! empty($post['orderBy'])) {
            $return['orderBy'] = json_decode($post['orderBy'], true);
        }

        if (empty($post['limit']) || ! isset($post['limit'])) {

            $post['limit'] = 10;
        }

        if ($post['limit'] > 50) {
            $post['limit'] = 50;
        }

        $return['limit'] = $post['limit'];

        return $return;
    }

    /**
     * Takes common requests and appends them to the query object. Any other
     * special requirements will be handled after
     *
     * @param  Ps2alerts\Api\QueryObjects\QueryObject $queryObject
     * @param  array                                  $post
     *
     * @return Ps2alerts\Api\QueryObjects\QueryObject
     */
    public function setupQueryObject($queryObject, $post)
    {
        if (! empty($post['wheres'])) {
            foreach ($post['wheres'] as $key => $value) {
                $queryObject->addWhere([
                    'col'   => $key,
                    'value' => $value
                ]);
            }
        }

        if (! empty($post['whereIns'])) {
            foreach ($post['whereIns'] as $key => $value) {
                // Escape strings manually, incase of player IDs etc
                foreach ($value as $i => $val) {
                    if (is_string($val)) {
                        $value[$i] = "'{$val}'";
                    }
                }

                $queryObject->addWhereIn([
                    'col'   => $key,
                    'value' => implode(',', $value) // use implode for WHERE IN (x,x)
                ]);
            }
        }

        if (! empty($post['orderBy'])) {
            $queryObject->setOrderBy(array_keys($post['orderBy'])[0]);
            $queryObject->setOrderByDirection(array_values($post['orderBy'])[0]);
        }

        if (! empty($post['limit'])) {
            $queryObject->setLimit($post['limit']);
        }

        if (! empty($this->getFlags())) {
            // If there are some funky things we have to do, set them.
            $queryObject->setFlags($this->getFlags());
        }

        // This should always be set
        $queryObject->addWhere([
            'col'   => 'Valid',
            'value' => '1'
        ]);

        return $queryObject;
    }
}


1		<?php
2
3		namespace Ps2alerts\Api\Loader\Statistics;
4
5		use Ps2alerts\Api\Loader\AbstractLoader;
6		use Ps2alerts\Api\QueryObjects\QueryObject;
7
8		abstract class AbstractStatisticsLoader extends AbstractLoader
9		{
10		/**
11		* Flags set for workarounds
12		*
13		* @var string
14		*/
15		protected $flags;
16
17		/**
18		* Allows setting of workaround flags
19		*
20		* @param string $flag
21		*/
22		public function setFlags($flag)
23		{
24		$this->flags = $flag;
25		}
26
27		/**
28		* Retrieves workaround flags
29		*
30		* @return string
31		*/
32		public function getFlags()
33		{
34		return $this->flags;
35		}
36
37		/**
38		* @var string
39		*/
40		protected $type;
41
42		/**
43		* Returns the top X of a particular statistic
44		*
45		* @param array $post POST variables from the request
46		*
47		* @return array
48		*/
49		public function readStatistics($post)
50		{
51		$redisKey = "{$this->getCacheNamespace()}:{$this->getType()}";
52		$redisKey = $this->appendRedisKey($post, $redisKey);
53		$post = $this->processPostVars($post);
54
55		if ($this->checkRedis($redisKey)) {
56		return $this->getFromRedis($redisKey);
		0 ignored issues – show Bug Best Practice introduced 2015-12-20 02:56 UTC by Report Bug Copy Issue Report The return type of `return $this->getFromRedis($redisKey);` (`string`) is incompatible with the return type documented by `Ps2alerts\Api\Loader\Sta...sLoader::readStatistics` of type `array`. 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...
57		}
58
59		$queryObject = new QueryObject;
60		$queryObject = $this->setupQueryObject($queryObject, $post);
		0 ignored issues – show Documentation introduced 2016-01-02 00:57 UTC by Report Bug Copy Issue Report `$queryObject` is of type `object<Ps2alerts\Api\QueryObjects\QueryObject>`, but the function expects a `object<Ps2alerts\Api\Loa...eryObjects\QueryObject>`. 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...
61
62		return $this->cacheAndReturn(
63		$this->repository->read($queryObject),
		0 ignored issues – show Bug introduced 2015-12-20 02:56 UTC by Report Bug Copy Issue Report The property `repository` does not exist. Did you maybe forget to declare it? In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code: class MyClass { } $x = new MyClass(); $x->foo = true; Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: class MyClass { public $foo; } $x = new MyClass(); $x->foo = true; Loading history...
64		$redisKey
65		);
66		}
67
68		/**
69		* Build a redis key based off inputs provided by the POST request
70		*
71		* @param array $post
72		* @param string $redisKey Redis Key to append to
73		*
74		* @return string
75		*/
76		public function appendRedisKey($post, $redisKey)
77		{
78		if (! empty($post['selects'])) {
79		$whereMD5 = md5($post['selects']);
80		$redisKey .= "/select{$whereMD5}";
81		}
82
83		if (! empty($post['wheres'])) {
84		$whereMD5 = md5($post['wheres']);
85		$redisKey .= "/where{$whereMD5}";
86		}
87
88		if (! empty($post['whereIns'])) {
89		$whereInMD5 = md5($post['whereIns']);
90		$redisKey .= "/whereIn{$whereInMD5}";
91		}
92
93		if (! empty($post['orderBy'])) {
94		$orderMD5 = md5($post['orderBy']);
95		$redisKey .= "/order{$orderMD5}";
96		}
97	View Code Duplication	if (! empty($post['limit'])) {
		0 ignored issues – show Duplication introduced 2015-12-20 02:56 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
98		// Enforce a max limit
99		if ($post['limit'] > 50) {
100		$post['limit'] = 50;
101		}
102		}
103
104	View Code Duplication	if (empty($post['limit']) \|\| ! isset($post['limit'])) {
		0 ignored issues – show Duplication introduced 2015-12-20 02:56 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
105		$post['limit'] = 10;
106		}
107
108		$redisKey .= "/limit{$post['limit']}";
109
110		return $redisKey;
111		}
112
113		/**
114		* De-encode the POST vars for use
115		*
116		* @param array $post
117		*
118		* @return array
119		*/
120		public function processPostVars($post)
121		{
122		if (! empty($post['wheres'])) {
123		$return['wheres'] = json_decode($post['wheres'], true);
		0 ignored issues – show Coding Style Comprehensibility introduced 2015-12-20 02:56 UTC by Report Bug Copy Issue Report `$return` was never initialized. Although not strictly required by PHP, it is generally a good practice to add `$return = array();` before regardless. Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code. Let’s take a look at an example: foreach ($collection as $item) { $myArray['foo'] = $item->getFoo(); if ($item->hasBar()) { $myArray['bar'] = $item->getBar(); } // do something with $myArray } As you can see in this example, the array `$myArray` is initialized the first time when the foreach loop is entered. You can also see that the value of the `bar` key is only written conditionally; thus, its value might result from a previous iteration. This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization `$myArray = array()` either outside or inside the foreach loop. Loading history...
124		$this->getLogDriver()->addDebug(json_encode($return['wheres']));
125		}
126
127		if (! empty($post['whereIns'])) {
128		$return['whereIns'] = json_decode($post['whereIns'], true);
		0 ignored issues – show Bug introduced 2016-01-02 00:57 UTC by Report Bug Copy Issue Report The variable `$return` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
129		}
130
131		if (! empty($post['orderBy'])) {
132		$return['orderBy'] = json_decode($post['orderBy'], true);
133		}
134
135	View Code Duplication	if (empty($post['limit']) \|\| ! isset($post['limit'])) {
		0 ignored issues – show Duplication introduced 2015-12-20 02:56 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
136		$post['limit'] = 10;
137		}
138
139		if ($post['limit'] > 50) {
140		$post['limit'] = 50;
141		}
142
143		$return['limit'] = $post['limit'];
144
145		return $return;
146		}
147
148		/**
149		* Takes common requests and appends them to the query object. Any other
150		* special requirements will be handled after
151		*
152		* @param Ps2alerts\Api\QueryObjects\QueryObject $queryObject
153		* @param array $post
154		*
155		* @return Ps2alerts\Api\QueryObjects\QueryObject
156		*/
157		public function setupQueryObject($queryObject, $post)
158		{
159		if (! empty($post['wheres'])) {
160		foreach ($post['wheres'] as $key => $value) {
161		$queryObject->addWhere([
162		'col' => $key,
163		'value' => $value
164		]);
165		}
166		}
167
168		if (! empty($post['whereIns'])) {
169		foreach ($post['whereIns'] as $key => $value) {
170		// Escape strings manually, incase of player IDs etc
171		foreach ($value as $i => $val) {
172		if (is_string($val)) {
173		$value[$i] = "'{$val}'";
174		}
175		}
176
177		$queryObject->addWhereIn([
178		'col' => $key,
179		'value' => implode(',', $value) // use implode for WHERE IN (x,x)
180		]);
181		}
182		}
183
184		if (! empty($post['orderBy'])) {
185		$queryObject->setOrderBy(array_keys($post['orderBy'])[0]);
186		$queryObject->setOrderByDirection(array_values($post['orderBy'])[0]);
187		}
188
189		if (! empty($post['limit'])) {
190		$queryObject->setLimit($post['limit']);
191		}
192
193		if (! empty($this->getFlags())) {
194		// If there are some funky things we have to do, set them.
195		$queryObject->setFlags($this->getFlags());
196		}
197
198		// This should always be set
199		$queryObject->addWhere([
200		'col' => 'Valid',
201		'value' => '1'
202		]);
203
204		return $queryObject;
205		}
206		}
207

Maelstromeous / ps2alerts-api

Push — master ( 1768c8...189bb6 )

AbstractStatisticsLoader A

Complexity

Size/Duplication

Coupling/Cohesion

Importance

6 Methods

How to fix Duplicated Code

Duplicated Code

Available Fixes

Duplication Side-by-Side

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