|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* ZeroMQ interface for cruftflake. |
|
5
|
|
|
* |
|
6
|
|
|
* @author @davegardnerisme |
|
7
|
|
|
*/ |
|
8
|
|
|
|
|
9
|
|
|
namespace Gendoria\CruftFlake\Zmq; |
|
10
|
|
|
|
|
11
|
|
|
use Exception; |
|
12
|
|
|
use Gendoria\CruftFlake\Generator\Generator; |
|
13
|
|
|
use Gendoria\CruftFlake\ServerInterface; |
|
14
|
|
|
use Psr\Log\LoggerAwareInterface; |
|
15
|
|
|
use Psr\Log\LoggerInterface; |
|
16
|
|
|
use Psr\Log\NullLogger; |
|
17
|
|
|
use ZMQ; |
|
18
|
|
|
use ZMQContext; |
|
19
|
|
|
use ZMQSocket; |
|
20
|
|
|
|
|
21
|
|
|
class ZmqServer implements ServerInterface, LoggerAwareInterface |
|
22
|
|
|
{ |
|
23
|
|
|
/** |
|
24
|
|
|
* Cruft flake generator. |
|
25
|
|
|
* |
|
26
|
|
|
* @var Generator |
|
27
|
|
|
*/ |
|
28
|
|
|
private $generator; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* DSN. |
|
32
|
|
|
* |
|
33
|
|
|
* @var string |
|
34
|
|
|
*/ |
|
35
|
|
|
private $dsn; |
|
36
|
|
|
|
|
37
|
|
|
/** |
|
38
|
|
|
* Logger. |
|
39
|
|
|
* |
|
40
|
|
|
* @var LoggerInterface |
|
41
|
|
|
*/ |
|
42
|
|
|
private $logger; |
|
43
|
|
|
private $debugMode = false; |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* Constructor. |
|
47
|
|
|
* |
|
48
|
|
|
* @param @inject Generator $generator |
|
49
|
|
|
* @param string $dsn Where socket should be bound. Default 'tcp://*:5599' |
|
50
|
|
|
* @param bool $debugMode Debug mode. If set to true, server will only listen for one command, before exiting. |
|
51
|
|
|
*/ |
|
52
|
8 |
|
public function __construct(Generator $generator, $dsn = 'tcp://*:5599', $debugMode = false) |
|
53
|
|
|
{ |
|
54
|
8 |
|
$this->generator = $generator; |
|
55
|
8 |
|
$this->dsn = $dsn; |
|
56
|
8 |
|
$this->logger = new NullLogger(); |
|
57
|
8 |
|
$this->debugMode = $debugMode; |
|
58
|
8 |
|
} |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* Run ZMQ interface for generator. |
|
62
|
|
|
* |
|
63
|
|
|
* Req-rep pattern; msgs are commands: |
|
64
|
|
|
* |
|
65
|
|
|
* GEN = Generate ID |
|
66
|
|
|
* STATUS = Get status string |
|
67
|
|
|
*/ |
|
68
|
6 |
|
public function run() |
|
69
|
|
|
{ |
|
70
|
6 |
|
$receiver = $this->getZmqSocket($this->dsn); |
|
71
|
6 |
|
while (true) { |
|
72
|
6 |
|
$msg = $receiver->recv(); |
|
73
|
6 |
|
if ($msg !== false) { |
|
74
|
5 |
|
$this->logger->debug('ZMQ server received command: '.$msg); |
|
75
|
5 |
|
$response = $this->runCommand($msg); |
|
76
|
5 |
|
$receiver->send(json_encode($response)); |
|
77
|
5 |
|
} |
|
78
|
6 |
|
$this->generator->heartbeat(); |
|
79
|
6 |
|
if ($this->debugMode) { |
|
80
|
6 |
|
break; |
|
81
|
|
|
} |
|
82
|
|
|
} |
|
83
|
6 |
|
} |
|
84
|
|
|
|
|
85
|
5 |
|
private function runCommand($msg) |
|
86
|
|
|
{ |
|
87
|
|
|
switch ($msg) { |
|
88
|
5 |
|
case 'GEN': |
|
89
|
3 |
|
return $this->commandGenerate(); |
|
90
|
2 |
|
case 'STATUS': |
|
91
|
1 |
|
return $this->commandStatus(); |
|
92
|
1 |
|
default: |
|
93
|
1 |
|
$this->logger->debug('Unknown command received: '.$msg); |
|
94
|
|
|
|
|
95
|
1 |
|
return $this->createResponse('UNKNOWN COMMAND', 404); |
|
96
|
1 |
|
} |
|
97
|
|
|
} |
|
98
|
|
|
|
|
99
|
|
|
/** |
|
100
|
|
|
* Create generate command response. |
|
101
|
|
|
* |
|
102
|
|
|
* @return array |
|
103
|
|
|
*/ |
|
104
|
3 |
|
private function commandGenerate() |
|
105
|
|
|
{ |
|
106
|
|
|
try { |
|
107
|
3 |
|
$response = $this->createResponse($this->generator->generate()); |
|
108
|
3 |
|
} catch (Exception $e) { |
|
109
|
1 |
|
$this->logger->error('Generator error: '.$e->getMessage(), array($e, $this)); |
|
110
|
1 |
|
$response = $this->createResponse('ERROR', 500); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
3 |
|
return $response; |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
|
|
/** |
|
117
|
|
|
* Create status command response. |
|
118
|
|
|
* |
|
119
|
|
|
* @return array |
|
120
|
|
|
*/ |
|
121
|
1 |
|
private function commandStatus() |
|
122
|
|
|
{ |
|
123
|
1 |
|
return $this->createResponse($this->generator->status()); |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
/** |
|
127
|
|
|
* Prepare response. |
|
128
|
|
|
* |
|
129
|
|
|
* @param mixed $message Return message. Anything, which is JSON serializable. |
|
130
|
|
|
* @param int $code Response code. |
|
131
|
|
|
* |
|
132
|
|
|
* @return array |
|
133
|
|
|
*/ |
|
134
|
5 |
|
private function createResponse($message, $code = 200) |
|
135
|
|
|
{ |
|
136
|
|
|
return array( |
|
137
|
5 |
|
'code' => $code, |
|
138
|
5 |
|
'message' => $message, |
|
139
|
5 |
|
); |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
|
|
/** |
|
143
|
|
|
* Get ZMQ socket. |
|
144
|
|
|
* |
|
145
|
|
|
* @param string $dsn DSN, on which ZMQ connection should listen. |
|
146
|
|
|
* |
|
147
|
|
|
* @return \ZMQSocket |
|
148
|
|
|
*/ |
|
149
|
1 |
|
protected function getZmqSocket($dsn) |
|
150
|
|
|
{ |
|
151
|
1 |
|
$context = new ZMQContext(); |
|
152
|
1 |
|
$receiver = new ZMQSocket($context, ZMQ::SOCKET_REP); |
|
153
|
|
|
//Receive timeout is set to 5s, to allow heartbeat operations to take place. |
|
154
|
1 |
|
$receiver->setSockOpt(ZMQ::SOCKOPT_RCVTIMEO, 5000); |
|
155
|
1 |
|
$this->logger->debug("Binding to {$dsn}"); |
|
156
|
1 |
|
$receiver->bind($dsn); |
|
157
|
|
|
|
|
158
|
1 |
|
return $receiver; |
|
159
|
|
|
} |
|
160
|
|
|
|
|
161
|
1 |
|
public function setLogger(LoggerInterface $logger) |
|
162
|
|
|
{ |
|
163
|
1 |
|
$this->logger = $logger; |
|
164
|
1 |
|
} |
|
165
|
|
|
} |
|
166
|
|
|
|
Gendoria /
cruftflake
