UnderstandBaseHandler::write()   A
last analyzed

Complexity

Conditions 1
Paths 1

Size

Total Lines 8
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
c 1
b 0
f 0
dl 0
loc 8
rs 9.4286
cc 1
eloc 4
nc 1
nop 1
1
<?php namespace UnderstandMonolog\Handler;
2
3
use UnderstandMonolog\Exception\HandlerException;
4
use UnderstandMonolog\Formatter\UnderstandFormatter;
5
6
use Monolog\Handler\AbstractProcessingHandler;
7
use Monolog\Logger;
8
9
abstract class UnderstandBaseHandler extends AbstractProcessingHandler
10
{
11
12
    /**
13
     * Input token
14
     *
15
     * @var string
16
     */
17
    protected $inputToken;
18
19
    /**
20
     * API url
21
     *
22
     * @var string
23
     */
24
    protected $apiUrl;
25
26
    /**
27
     * Specifies whether logger should throw an exception of issues detected
28
     *
29
     * @var bool
30
     */
31
    protected $silent = true;
32
33
    /**
34
     * SSL CA bundle path
35
     *
36
     * @var string
37
     */
38
    protected $sslBundlePath;
39
40
    /**
41
     * Last handler error
42
     *
43
     * @var string
44
     */
45
    protected $lastError;
46
47
    /**
48
     * @param string $inputToken
49
     * @param string $apiUrl
50
     * @param boolean $silent
51
     * @param string $sslBundlePath
52
     * @param integer $level
53
     * @param boolean $bubble
54
     */
55
    public function __construct($inputToken, $apiUrl = 'https://api.understand.io', $silent = true, $sslBundlePath = false, $level = Logger::DEBUG, $bubble = true)
56
    {
57
        if ($sslBundlePath === false)
58
        {
59
            $this->sslBundlePath = __DIR__ . DIRECTORY_SEPARATOR . 'ca_bundle.crt';
60
        }
61
        else
62
        {
63
            $this->sslBundlePath = $sslBundlePath;
64
        }
65
66
        $this->inputToken = $inputToken;
67
        $this->apiUrl = $apiUrl;
68
        $this->silent = $silent;
69
70
71
        parent::__construct($level, $bubble);
72
    }
73
74
    /**
75
     * Send data to storage
76
     *
77
     * @param string $data
78
     * @return string
79
     */
80
    abstract protected function send($data);
81
82
    /**
83
     * Serialize data and send to storage
84
     *
85
     * @param array $record
86
     * @return void
87
     */
88
    public function write(array $record)
89
    {
90
        $requestData = $record['formatted'];
91
92
        $response = $this->send($requestData);
93
94
        $this->parseResponse($response, $requestData);
95
    }
96
97
    /**
98
     * Return endpoint
99
     *
100
     * @return string
101
     */
102
    protected function getEndpoint()
103
    {
104
        return implode('/', [$this->apiUrl, $this->inputToken]);
105
    }
106
107
    /**
108
     * Parse respnse into array
109
     *
110
     * @param string $response
111
     * @param string $requestData
112
     * @return array
113
     */
114
    protected function parseResponse($response, $requestData)
115
    {
116
        $responseArr = json_decode($response, true);
117
118
        if ( ! $this->silent && empty($responseArr['count']))
119
        {
120
            $this->handleError($responseArr, $requestData);
121
        }
122
123
        return $responseArr;
124
    }
125
126
    /**
127
     * Transform error respopnse into exception
128
     *
129
     * @param string $responseArr
130
     * @param string $requestData
131
     * @throws HandlerException
132
     */
133
    protected function handleError($responseArr, $requestData)
134
    {
135
        if ( ! $responseArr)
136
        {
137
            throw new HandlerException('Cannot create connection to ' . $this->apiUrl . ' ' . $this->lastError);
138
        }
139
140
        if (isset($responseArr['error']))
141
        {
142
            throw new HandlerException($responseArr['error']);
143
        }
144
145
        throw new HandlerException('Error. ' . ' Request data: ' . json_encode($requestData));
146
    }
147
148
    /**
149
     * Gets the default formatter.
150
     *
151
     * @return FormatterInterface
152
     */
153
    protected function getDefaultFormatter()
154
    {
155
        return new UnderstandFormatter();
0 ignored issues
show
Bug Best Practice introduced by
The return type of return new \UnderstandMo...\UnderstandFormatter(); (UnderstandMonolog\Formatter\UnderstandFormatter) is incompatible with the return type of the parent method Monolog\Handler\Abstract...er::getDefaultFormatter of type Monolog\Formatter\LineFormatter.

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...
156
    }
157
}