|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Psr7Middlewares\Middleware; |
|
4
|
|
|
|
|
5
|
|
|
use Psr7Middlewares\Utils; |
|
6
|
|
|
use Psr\Http\Message\RequestInterface; |
|
7
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
8
|
|
|
use Psr\Http\Message\StreamInterface; |
|
9
|
|
|
use RuntimeException; |
|
10
|
|
|
|
|
11
|
|
|
/** |
|
12
|
|
|
* Middleware to save the response into a file. |
|
13
|
|
|
*/ |
|
14
|
|
|
class SaveResponse |
|
15
|
|
|
{ |
|
16
|
|
|
use Utils\FileTrait; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* Execute the middleware. |
|
20
|
|
|
* |
|
21
|
|
|
* @param RequestInterface $request |
|
22
|
|
|
* @param ResponseInterface $response |
|
23
|
|
|
* @param callable $next |
|
24
|
|
|
* |
|
25
|
|
|
* @return ResponseInterface |
|
26
|
|
|
*/ |
|
27
|
|
|
public function __invoke(RequestInterface $request, ResponseInterface $response, callable $next) |
|
28
|
|
|
{ |
|
29
|
|
|
$response = $next($request, $response); |
|
30
|
|
|
|
|
31
|
|
|
if ($this->canSave($request, $response)) { |
|
32
|
|
|
$path = $this->getFilename($request); |
|
33
|
|
|
|
|
34
|
|
|
//if it's gz compressed, append .gz |
|
35
|
|
|
if (strtolower($response->getHeaderLine('Content-Encoding')) === 'gzip') { |
|
36
|
|
|
$path .= '.gz'; |
|
37
|
|
|
} |
|
38
|
|
|
|
|
39
|
|
|
self::writeStream($response->getBody(), $path); |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
|
|
return $response; |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* Check whether the response can be saved or not. |
|
47
|
|
|
* |
|
48
|
|
|
* @param RequestInterface $request |
|
49
|
|
|
* @param ResponseInterface $response |
|
50
|
|
|
* |
|
51
|
|
|
* @return bool |
|
52
|
|
|
*/ |
|
53
|
|
|
private function canSave(RequestInterface $request, ResponseInterface $response) |
|
54
|
|
|
{ |
|
55
|
|
|
if ($request->getMethod() !== 'GET') { |
|
56
|
|
|
return false; |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
|
|
if ($response->getStatusCode() !== 200) { |
|
60
|
|
|
return false; |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
if (!$this->appendQuery && !empty($request->getUri()->getQuery())) { |
|
64
|
|
|
return false; |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
$cacheControl = $response->getHeaderLine('Cache-Control'); |
|
68
|
|
|
|
|
69
|
|
|
if ($cacheControl && (stripos($cacheControl, 'no-cache') !== false || stripos($cacheControl, 'no-store') !== false)) { |
|
70
|
|
|
return false; |
|
71
|
|
|
} |
|
72
|
|
|
|
|
73
|
|
|
return true; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
/** |
|
77
|
|
|
* Write the stream to the given path. |
|
78
|
|
|
* |
|
79
|
|
|
* @param StreamInterface $stream |
|
80
|
|
|
* @param string $path |
|
81
|
|
|
*/ |
|
82
|
|
|
private static function writeStream(StreamInterface $stream, $path) |
|
83
|
|
|
{ |
|
84
|
|
|
$dir = dirname($path); |
|
85
|
|
|
|
|
86
|
|
|
if (!is_dir($dir)) { |
|
87
|
|
|
mkdir($dir, 0777, true); |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
$handle = fopen($path, 'wb+'); |
|
91
|
|
|
|
|
92
|
|
|
if (false === $handle) { |
|
93
|
|
|
throw new RuntimeException('Unable to write to designated path'); |
|
94
|
|
|
} |
|
95
|
|
|
|
|
96
|
|
|
$stream->rewind(); |
|
97
|
|
|
|
|
98
|
|
|
while (!$stream->eof()) { |
|
99
|
|
|
fwrite($handle, $stream->read(4096)); |
|
100
|
|
|
} |
|
101
|
|
|
|
|
102
|
|
|
fclose($handle); |
|
103
|
|
|
} |
|
104
|
|
|
} |
|
105
|
|
|
|
oscarotero /
psr7-middlewares
