|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace LegalThings\DataEnricher\Processor; |
|
4
|
|
|
|
|
5
|
|
|
use LegalThings\DataEnricher; |
|
6
|
|
|
use LegalThings\DataEnricher\Node; |
|
7
|
|
|
use LegalThings\DataEnricher\Processor; |
|
8
|
|
|
use GuzzleHttp\Client; |
|
9
|
|
|
use GuzzleHttp\Promise; |
|
10
|
|
|
use GuzzleHttp\Psr7\Response; |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* Load an external source |
|
14
|
|
|
*/ |
|
15
|
|
|
class Http implements Processor |
|
16
|
|
|
{ |
|
17
|
|
|
/** |
|
18
|
|
|
* Property key which should trigger the processor |
|
19
|
|
|
* @var string |
|
20
|
|
|
*/ |
|
21
|
|
|
protected $property; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* @var \SplObjectStorage|Promise\PromiseInterface[] |
|
25
|
|
|
*/ |
|
26
|
|
|
protected $promises; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* Class constructor |
|
30
|
|
|
* |
|
31
|
|
|
* @param DataEnricher $invoker |
|
32
|
|
|
* @param string $property Property key with the processing instruction |
|
33
|
|
|
*/ |
|
34
|
|
|
public function __construct(DataEnricher $invoker, $property) |
|
35
|
|
|
{ |
|
36
|
|
|
$this->property = $property; |
|
37
|
|
|
} |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* Get the property key that holds the processing instruction |
|
41
|
|
|
* |
|
42
|
|
|
* @return string |
|
43
|
|
|
*/ |
|
44
|
|
|
public function getProperty() |
|
45
|
|
|
{ |
|
46
|
|
|
return $this->property; |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* Prepare processing to nodes |
|
51
|
|
|
* |
|
52
|
|
|
* @param Node[] $nodes |
|
53
|
|
|
*/ |
|
54
|
|
|
public function prepare(array $nodes) |
|
55
|
|
|
{ |
|
56
|
|
|
$this->promises = $this->request($nodes); |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* Do async requests for each node |
|
61
|
|
|
* |
|
62
|
|
|
* @param Node[] $nodes |
|
63
|
|
|
* @return \SplObjectStorage|Promise\PromiseInterface[] |
|
64
|
|
|
*/ |
|
65
|
|
|
protected function request($nodes) |
|
66
|
|
|
{ |
|
67
|
|
|
$client = new Client(); |
|
|
|
|
|
|
68
|
|
|
$promises = new \SplObjectStorage(); |
|
69
|
|
|
|
|
70
|
|
|
foreach ($nodes as $node) { |
|
71
|
|
|
if ($node->hasInstruction($this)) { |
|
72
|
|
|
$url = $node->getInstruction($this); |
|
|
|
|
|
|
73
|
|
|
$promises[$node] = $client->getAsync($url); |
|
74
|
|
|
} |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
|
|
return $promises; |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
/** |
|
81
|
|
|
* Apply results to a node |
|
82
|
|
|
* |
|
83
|
|
|
* @param Node $node |
|
84
|
|
|
*/ |
|
85
|
|
|
public function applyToNode(Node $node) |
|
86
|
|
|
{ |
|
87
|
|
|
if (!isset($this->promises[$node])) { |
|
88
|
|
|
return; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
$result = null; |
|
|
|
|
|
|
92
|
|
|
$response = $this->promises[$node]->wait(); |
|
93
|
|
|
|
|
94
|
|
|
if ($this->hasExpectedResponse($response)) { |
|
95
|
|
|
$result = json_decode($response->body()); |
|
96
|
|
|
|
|
97
|
|
|
if (!$result) { |
|
98
|
|
|
$url = $node->getInstruction($this); |
|
99
|
|
|
trigger_error("Failed to fetch '$url': Corrupt JSON response", E_USER_WARNING); |
|
100
|
|
|
} |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
|
|
$node->setResult($result); |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
/** |
|
107
|
|
|
* Check if we got an expected response |
|
108
|
|
|
* |
|
109
|
|
|
* @param Response $response |
|
110
|
|
|
* @return boolean |
|
111
|
|
|
*/ |
|
112
|
|
|
protected function hasExpectedResponse(Response $response) |
|
113
|
|
|
{ |
|
114
|
|
|
$status = $response->getStatusCode(); |
|
|
|
|
|
|
115
|
|
|
$contentType = preg_replace('/\s*;.*$/', '', $response->getHeader('content-type')); |
|
116
|
|
|
|
|
117
|
|
|
if ($status >= 300 || !in_array($contentType, ['application/json', 'text/plain'])) { |
|
118
|
|
|
$url = $node->getInstruction($this); |
|
|
|
|
|
|
119
|
|
|
|
|
120
|
|
|
if ($contentType === 'text/plain') { |
|
121
|
|
|
$message = $response->getBody(); |
|
122
|
|
|
} else { |
|
123
|
|
|
$message = "Server responded with a $status status and $contentType"; |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
trigger_error("Failed to fetch '$url': $message", E_USER_WARNING); |
|
127
|
|
|
return false; |
|
128
|
|
|
} |
|
129
|
|
|
|
|
130
|
|
|
return true; |
|
131
|
|
|
} |
|
132
|
|
|
} |
|
133
|
|
|
|
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line.
To visualize
will produce issues in the first and second line, while this second example
will produce no issues.