|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* GpsLab component. |
|
5
|
|
|
* |
|
6
|
|
|
* @author Peter Gribanov <[email protected]> |
|
7
|
|
|
* @copyright Copyright (c) 2011, Peter Gribanov |
|
8
|
|
|
* @license http://opensource.org/licenses/MIT |
|
9
|
|
|
*/ |
|
10
|
|
|
|
|
11
|
|
|
namespace GpsLab\Component\Command\Queue\Subscribe; |
|
12
|
|
|
|
|
13
|
|
|
use GpsLab\Component\Command\Command; |
|
14
|
|
|
use GpsLab\Component\Command\Queue\Serializer\Serializer; |
|
15
|
|
|
use Psr\Log\LoggerInterface; |
|
16
|
|
|
use Superbalist\PubSub\Redis\RedisPubSubAdapter; |
|
17
|
|
|
|
|
18
|
|
|
class PredisSubscribeCommandQueue implements SubscribeCommandQueue |
|
19
|
|
|
{ |
|
20
|
|
|
/** |
|
21
|
|
|
* @var RedisPubSubAdapter |
|
22
|
|
|
*/ |
|
23
|
|
|
private $client; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* @var Serializer |
|
27
|
|
|
*/ |
|
28
|
|
|
private $serializer; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* @var LoggerInterface |
|
32
|
|
|
*/ |
|
33
|
|
|
private $logger; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* @var callable[] |
|
37
|
|
|
*/ |
|
38
|
|
|
private $handlers = []; |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* @var string |
|
42
|
|
|
*/ |
|
43
|
|
|
private $queue_name = ''; |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* @var bool |
|
47
|
|
|
*/ |
|
48
|
|
|
private $subscribed = false; |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* @param RedisPubSubAdapter $client |
|
52
|
|
|
* @param Serializer $serializer |
|
53
|
|
|
* @param LoggerInterface $logger |
|
54
|
|
|
* @param string $queue_name |
|
55
|
|
|
*/ |
|
56
|
5 |
|
public function __construct( |
|
57
|
|
|
RedisPubSubAdapter $client, |
|
58
|
|
|
Serializer $serializer, |
|
59
|
|
|
LoggerInterface $logger, |
|
60
|
|
|
$queue_name |
|
61
|
|
|
) { |
|
62
|
5 |
|
$this->client = $client; |
|
63
|
5 |
|
$this->serializer = $serializer; |
|
64
|
5 |
|
$this->logger = $logger; |
|
65
|
5 |
|
$this->queue_name = $queue_name; |
|
66
|
5 |
|
} |
|
67
|
|
|
|
|
68
|
|
|
/** |
|
69
|
|
|
* Publish command to queue. |
|
70
|
|
|
* |
|
71
|
|
|
* @param Command $command |
|
72
|
|
|
* |
|
73
|
|
|
* @return bool |
|
74
|
|
|
*/ |
|
75
|
1 |
|
public function publish(Command $command) |
|
76
|
|
|
{ |
|
77
|
1 |
|
$massage = $this->serializer->serialize($command); |
|
78
|
1 |
|
$this->client->publish($this->queue_name, $massage); |
|
79
|
|
|
|
|
80
|
1 |
|
return true; |
|
81
|
|
|
} |
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* Subscribe on command queue. |
|
85
|
|
|
* |
|
86
|
|
|
* @param callable $handler |
|
87
|
|
|
*/ |
|
88
|
4 |
|
public function subscribe(callable $handler) |
|
89
|
|
|
{ |
|
90
|
4 |
|
$this->handlers[] = $handler; |
|
91
|
|
|
|
|
92
|
|
|
// laze subscribe |
|
93
|
4 |
|
if (!$this->subscribed) { |
|
94
|
4 |
|
$this->client->subscribe($this->queue_name, function ($message) { |
|
95
|
3 |
|
$this->handle($message); |
|
96
|
4 |
|
}); |
|
97
|
3 |
|
$this->subscribed = true; |
|
98
|
3 |
|
} |
|
99
|
3 |
|
} |
|
100
|
|
|
|
|
101
|
|
|
/** |
|
102
|
|
|
* Unsubscribe on command queue. |
|
103
|
|
|
* |
|
104
|
|
|
* @param callable $handler |
|
105
|
|
|
* |
|
106
|
|
|
* @return bool |
|
107
|
|
|
*/ |
|
108
|
1 |
|
public function unsubscribe(callable $handler) |
|
109
|
|
|
{ |
|
110
|
1 |
|
$index = array_search($handler, $this->handlers); |
|
111
|
|
|
|
|
112
|
1 |
|
if (false === $index) { |
|
113
|
1 |
|
return false; |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
1 |
|
unset($this->handlers[$index]); |
|
117
|
|
|
|
|
118
|
1 |
|
return true; |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
/** |
|
122
|
|
|
* @param mixed $message |
|
123
|
|
|
*/ |
|
124
|
3 |
|
private function handle($message) |
|
125
|
|
|
{ |
|
126
|
|
|
try { |
|
127
|
3 |
|
$command = $this->serializer->deserialize($message); |
|
128
|
3 |
|
} catch (\Exception $e) { // catch only deserialize exception |
|
129
|
|
|
// it's a critical error |
|
130
|
|
|
// it is necessary to react quickly to it |
|
131
|
1 |
|
$this->logger->critical('Failed denormalize a command in the Redis queue', [$message, $e->getMessage()]); |
|
132
|
|
|
|
|
133
|
|
|
// try denormalize in later |
|
134
|
1 |
|
$this->client->publish($this->queue_name, $message); |
|
135
|
|
|
|
|
136
|
1 |
|
return; // no command for handle |
|
137
|
|
|
} |
|
138
|
|
|
|
|
139
|
2 |
|
foreach ($this->handlers as $handler) { |
|
140
|
2 |
|
call_user_func($handler, $command); |
|
141
|
1 |
|
} |
|
142
|
1 |
|
} |
|
143
|
|
|
} |
|
144
|
|
|
|
gpslab /
cqrs
