|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* WebHemi. |
|
4
|
|
|
* |
|
5
|
|
|
* PHP version 5.6 |
|
6
|
|
|
* |
|
7
|
|
|
* @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com) |
|
8
|
|
|
* @license https://opensource.org/licenses/MIT The MIT License (MIT) |
|
9
|
|
|
* |
|
10
|
|
|
* @link http://www.gixx-web.com |
|
11
|
|
|
*/ |
|
12
|
|
|
namespace WebHemi\Middleware\Pipeline; |
|
13
|
|
|
|
|
14
|
|
|
use InvalidArgumentException; |
|
15
|
|
|
use RuntimeException; |
|
16
|
|
|
use WebHemi\Config\ConfigInterface; |
|
17
|
|
|
use WebHemi\Middleware\MiddlewareInterface; |
|
18
|
|
|
use WebHemi\Middleware\DispatcherMiddleware; |
|
19
|
|
|
use WebHemi\Middleware\FinalMiddleware; |
|
20
|
|
|
use WebHemi\Middleware\RoutingMiddleware; |
|
21
|
|
|
|
|
22
|
|
|
/** |
|
23
|
|
|
* Class Pipeline. |
|
24
|
|
|
*/ |
|
25
|
|
|
class Pipeline implements MiddlewarePipelineInterface |
|
26
|
|
|
{ |
|
27
|
|
|
/** @var ConfigInterface */ |
|
28
|
|
|
private $config; |
|
29
|
|
|
/** @var array */ |
|
30
|
|
|
private $priorityList; |
|
31
|
|
|
/** @var array */ |
|
32
|
|
|
private $pipelineList; |
|
33
|
|
|
/** @var array */ |
|
34
|
|
|
private $keyMiddlewareList; |
|
35
|
|
|
/** @var int */ |
|
36
|
|
|
private $index; |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* Pipeline constructor. |
|
40
|
|
|
* |
|
41
|
|
|
* @param ConfigInterface $pipelineConfig |
|
42
|
|
|
*/ |
|
43
|
3 |
|
public function __construct(ConfigInterface $pipelineConfig) |
|
44
|
|
|
{ |
|
45
|
3 |
|
$this->config = $pipelineConfig; |
|
46
|
|
|
|
|
47
|
3 |
|
$this->keyMiddlewareList = [ |
|
48
|
|
|
RoutingMiddleware::class, |
|
49
|
|
|
DispatcherMiddleware::class, |
|
50
|
|
|
FinalMiddleware::class |
|
51
|
|
|
]; |
|
52
|
|
|
|
|
53
|
|
|
// The FinalMiddleware should not be part of the queue. |
|
54
|
3 |
|
$this->priorityList = [ |
|
55
|
|
|
0 => [RoutingMiddleware::class], |
|
56
|
|
|
100 => [DispatcherMiddleware::class] |
|
57
|
|
|
]; |
|
58
|
|
|
|
|
59
|
3 |
|
$this->pipelineList = [ |
|
60
|
|
|
RoutingMiddleware::class, |
|
61
|
|
|
DispatcherMiddleware::class, |
|
62
|
|
|
]; |
|
63
|
|
|
|
|
64
|
3 |
|
$this->buildPipeline(); |
|
65
|
3 |
|
} |
|
66
|
|
|
|
|
67
|
|
|
/** |
|
68
|
|
|
* Add middleware definitions to the pipeline. |
|
69
|
|
|
*/ |
|
70
|
3 |
|
private function buildPipeline() |
|
71
|
|
|
{ |
|
72
|
3 |
|
$pipelineConfig = $this->config->toArray(); |
|
73
|
|
|
|
|
74
|
3 |
|
foreach ($pipelineConfig as $middlewareData) { |
|
75
|
3 |
|
if (!isset($middlewareData['priority'])) { |
|
76
|
3 |
|
$middlewareData['priority'] = 50; |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
3 |
|
$this->queueMiddleware($middlewareData['class'], $middlewareData['priority']); |
|
80
|
|
|
} |
|
81
|
3 |
|
} |
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* Checks the given class against Middleware Criterias. |
|
85
|
|
|
* |
|
86
|
|
|
* @param $middleWareClass |
|
87
|
|
|
* |
|
88
|
|
|
* @throws RuntimeException |
|
89
|
|
|
* |
|
90
|
|
|
* @return bool |
|
91
|
|
|
*/ |
|
92
|
3 |
|
private function checkMiddleware($middleWareClass) |
|
93
|
|
|
{ |
|
94
|
3 |
|
if (isset($this->index)) { |
|
95
|
|
|
throw new RuntimeException('You are forbidden to add new middleware after start.'); |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
3 |
|
if (in_array($middleWareClass, $this->pipelineList)) { |
|
99
|
|
|
throw new RuntimeException( |
|
100
|
|
|
sprintf('The class "%s" is already added to the pipeline.', $middleWareClass) |
|
101
|
|
|
); |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
3 |
|
return true; |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
/** |
|
108
|
|
|
* Adds a new middleware to the pipeline queue. |
|
109
|
|
|
* |
|
110
|
|
|
* @param string $middleWareClass |
|
111
|
|
|
* @param int $priority |
|
112
|
|
|
* |
|
113
|
|
|
* @throws RuntimeException |
|
114
|
|
|
* |
|
115
|
|
|
* @return $this |
|
116
|
|
|
*/ |
|
117
|
3 |
|
public function queueMiddleware($middleWareClass, $priority = 50) |
|
118
|
|
|
{ |
|
119
|
3 |
|
$this->checkMiddleware($middleWareClass); |
|
120
|
|
|
|
|
121
|
3 |
|
if (in_array($middleWareClass, $this->keyMiddlewareList)) { |
|
122
|
|
|
// Don't throw error if the user defines the default middleware classes. |
|
123
|
|
|
return $this; |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
3 |
|
if ($priority === 0 || $priority == 100) { |
|
127
|
|
|
$priority++; |
|
128
|
|
|
} |
|
129
|
|
|
|
|
130
|
3 |
|
if (!isset($this->priorityList[$priority])) { |
|
131
|
3 |
|
$this->priorityList[$priority] = []; |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
3 |
|
if (!in_array($middleWareClass, $this->priorityList[$priority])) { |
|
135
|
3 |
|
$this->priorityList[$priority][] = $middleWareClass; |
|
136
|
|
|
} |
|
137
|
|
|
|
|
138
|
3 |
|
return $this; |
|
139
|
|
|
} |
|
140
|
|
|
|
|
141
|
|
|
/** |
|
142
|
|
|
* Sorts the pipeline elements according to the priority. |
|
143
|
|
|
*/ |
|
144
|
2 |
|
private function sortPipeline() |
|
145
|
|
|
{ |
|
146
|
2 |
|
ksort($this->priorityList); |
|
147
|
2 |
|
$this->pipelineList = []; |
|
148
|
|
|
|
|
149
|
2 |
|
foreach ($this->priorityList as $middlewareList) { |
|
150
|
2 |
|
$this->pipelineList = array_merge($this->pipelineList, $middlewareList); |
|
151
|
|
|
} |
|
152
|
2 |
|
} |
|
153
|
|
|
|
|
154
|
|
|
/** |
|
155
|
|
|
* Starts the pipeline. |
|
156
|
|
|
* |
|
157
|
|
|
* @return null|string |
|
158
|
|
|
*/ |
|
159
|
2 |
|
public function start() |
|
160
|
|
|
{ |
|
161
|
2 |
|
$this->index = 0; |
|
162
|
2 |
|
$this->sortPipeline(); |
|
163
|
|
|
|
|
164
|
2 |
|
return $this->next(); |
|
165
|
|
|
} |
|
166
|
|
|
|
|
167
|
|
|
/** |
|
168
|
|
|
* Gets next element from the pipeline. |
|
169
|
|
|
* |
|
170
|
|
|
* @return null|string |
|
171
|
|
|
*/ |
|
172
|
2 |
|
public function next() |
|
173
|
|
|
{ |
|
174
|
2 |
|
if (!isset($this->index)) { |
|
175
|
|
|
throw new RuntimeException('Unable to get the next element until the pipeline is not started.'); |
|
176
|
|
|
} |
|
177
|
|
|
|
|
178
|
2 |
|
return isset($this->pipelineList[$this->index]) ? $this->pipelineList[$this->index++] : null; |
|
179
|
|
|
} |
|
180
|
|
|
|
|
181
|
|
|
/** |
|
182
|
|
|
* Gets the full pipeline list. |
|
183
|
|
|
* |
|
184
|
|
|
* @return array |
|
185
|
|
|
*/ |
|
186
|
|
|
public function getPipelineList() |
|
187
|
|
|
{ |
|
188
|
|
|
return $this->pipelineList; |
|
189
|
|
|
} |
|
190
|
|
|
} |
|
191
|
|
|
|
Gixx /
WebHemi
