|
1
|
|
|
<?php declare(strict_types=1); |
|
2
|
|
|
|
|
3
|
|
|
namespace Igni\Http\Middleware; |
|
4
|
|
|
|
|
5
|
|
|
use Igni\Http\Exception\MiddlewareException; |
|
6
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
7
|
|
|
use Psr\Http\Message\ServerRequestInterface; |
|
8
|
|
|
use Psr\Http\Server\MiddlewareInterface; |
|
9
|
|
|
use Psr\Http\Server\RequestHandlerInterface; |
|
10
|
|
|
use SplQueue; |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* Variation of zend stratigility's pipe. |
|
14
|
|
|
*/ |
|
15
|
|
|
class MiddlewarePipe implements MiddlewareInterface, RequestHandlerInterface |
|
16
|
|
|
{ |
|
17
|
|
|
protected $pipeline; |
|
18
|
|
|
|
|
19
|
12 |
|
public function __construct(SplQueue $pipeline = null) |
|
20
|
|
|
{ |
|
21
|
12 |
|
$this->pipeline = $pipeline ?: new SplQueue(); |
|
22
|
12 |
|
} |
|
23
|
|
|
|
|
24
|
12 |
|
public function __clone() |
|
25
|
|
|
{ |
|
26
|
12 |
|
$this->pipeline = clone $this->pipeline; |
|
27
|
12 |
|
} |
|
28
|
|
|
|
|
29
|
1 |
|
public function __invoke(ServerRequestInterface $request): ResponseInterface |
|
30
|
|
|
{ |
|
31
|
1 |
|
return $this->handle($request); |
|
32
|
|
|
} |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* De-queues and executes middleware from the top of the cloned pipeline. |
|
36
|
|
|
* |
|
37
|
|
|
* @param ServerRequestInterface $request |
|
38
|
|
|
* @return ResponseInterface |
|
39
|
|
|
*/ |
|
40
|
12 |
|
public function handle(ServerRequestInterface $request): ResponseInterface |
|
41
|
|
|
{ |
|
42
|
12 |
|
if ($this->pipeline->isEmpty()) { |
|
43
|
|
|
throw MiddlewareException::forEmptyMiddlewarePipeline(); |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
12 |
|
$pipeline = clone $this; |
|
47
|
12 |
|
$middleware = $pipeline->pipeline->dequeue(); |
|
48
|
|
|
|
|
49
|
12 |
|
return $middleware->process($request, $pipeline); |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
|
|
/** |
|
53
|
|
|
* PSR-15 Middleware invocation |
|
54
|
|
|
* |
|
55
|
|
|
* @param ServerRequestInterface $request |
|
56
|
|
|
* @param RequestHandlerInterface $handler |
|
57
|
|
|
* @return ResponseInterface |
|
58
|
|
|
*/ |
|
59
|
|
|
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
|
60
|
|
|
{ |
|
61
|
|
|
$next = new Next($this->pipeline, $handler); |
|
62
|
|
|
|
|
63
|
|
|
return $next($request); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
/** |
|
67
|
|
|
* Attach middleware to the pipeline. |
|
68
|
|
|
* |
|
69
|
|
|
* @param MiddlewareInterface|callable ...$middleware |
|
70
|
|
|
*/ |
|
71
|
12 |
|
public function add(MiddlewareInterface ...$middleware): void |
|
72
|
|
|
{ |
|
73
|
12 |
|
foreach ($middleware as $item) { |
|
74
|
12 |
|
$this->pipeline->enqueue($item); |
|
75
|
|
|
} |
|
76
|
12 |
|
} |
|
77
|
|
|
} |
|
78
|
|
|
|
igniphp /
framework
