|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace PEIP\ABS\Router; |
|
4
|
|
|
|
|
5
|
|
|
namespace PEIP\ABS\Router; |
|
6
|
|
|
|
|
7
|
|
|
/* |
|
8
|
|
|
* This file is part of the PEIP package. |
|
9
|
|
|
* (c) 2009-2016 Timo Michna <timomichna/yahoo.de> |
|
10
|
|
|
* |
|
11
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
12
|
|
|
* file that was distributed with this source code. |
|
13
|
|
|
*/ |
|
14
|
|
|
|
|
15
|
|
|
/* |
|
16
|
|
|
* PEIP\ABS\Router\Router |
|
17
|
|
|
* Basic abstract implementation of a message router. |
|
18
|
|
|
* |
|
19
|
|
|
* @author Timo Michna <timomichna/yahoo.de> |
|
20
|
|
|
* @package PEIP |
|
21
|
|
|
* @subpackage router |
|
22
|
|
|
* @extends \PEIP\Pipe\Pipe |
|
23
|
|
|
* @implements \PEIP\INF\Event\Connectable, \PEIP\INF\Channel\SubscribableChannel, \PEIP\INF\Channel\Channel, \PEIP\INF\Handler\Handler, \PEIP\INF\Message\MessageBuilder |
|
24
|
|
|
*/ |
|
25
|
|
|
|
|
26
|
|
|
|
|
27
|
|
|
|
|
28
|
|
|
abstract class Router extends \PEIP\Pipe\Pipe |
|
29
|
|
|
{ |
|
30
|
|
|
const |
|
31
|
|
|
EVENT_PRE_RESOLVE = 'pre_resolve', |
|
32
|
|
|
EVENT_POST_RESOLVE = 'post_resolve', |
|
33
|
|
|
EVENT_ERR_RESOLVE = 'err_resolve', |
|
34
|
|
|
HEADER_CHANNEL = 'CHANNEL', |
|
35
|
|
|
HEADER_CHANNEL_NAME = 'CHANNEL_NAME', |
|
36
|
|
|
HEADER_CHANNEL_RESOLVER = 'HEADER_CHANNEL_RESOLVER'; |
|
37
|
|
|
|
|
38
|
|
|
protected $channelResolver; |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* constructor. |
|
42
|
|
|
* |
|
43
|
|
|
* @param \PEIP\INF\Channel\Channel_Resolver $channelResolver channel resolver for the router |
|
44
|
|
|
* @param \PEIP\INF\Channel\Channel $inputChannel the input channel for the router |
|
45
|
|
|
* |
|
46
|
|
|
* @return |
|
47
|
|
|
*/ |
|
48
|
|
|
public function __construct(\PEIP\INF\Channel\Channel_Resolver $channelResolver, \PEIP\INF\Channel\Channel $inputChannel) |
|
49
|
|
|
{ |
|
50
|
|
|
$this->channelResolver = $channelResolver; |
|
51
|
|
|
$this->setInputChannel($inputChannel); |
|
52
|
|
|
} |
|
53
|
|
|
|
|
54
|
|
|
/** |
|
55
|
|
|
* Sets the channel resolver for the router. |
|
56
|
|
|
* |
|
57
|
|
|
* @param \PEIP\INF\Channel\Channel_Resolver $channelResolver the channel resolver for the router |
|
58
|
|
|
* |
|
59
|
|
|
* @return |
|
60
|
|
|
*/ |
|
61
|
|
|
public function setChannelResolver(\PEIP\INF\Channel\Channel_Resolver $channelResolver) |
|
62
|
|
|
{ |
|
63
|
|
|
$this->doFireEvent(self::EVENT_CHANNEL_RESOLVER_SET, [self::HEADER_CHANNEL_RESOLVER => $channelResolver]); |
|
64
|
|
|
$this->channelResolver = $channelResolver; |
|
65
|
|
|
$this->doFireEvent(self::EVENT_CHANNEL_RESOLVER_SET, [self::HEADER_CHANNEL_RESOLVER => $channelResolver]); |
|
66
|
|
|
} |
|
67
|
|
|
|
|
68
|
|
|
/** |
|
69
|
|
|
* Sends given message on all accepted reply-channels. |
|
70
|
|
|
* |
|
71
|
|
|
* @param \PEIP\INF\Message\Message $message the message to reply with |
|
72
|
|
|
* |
|
73
|
|
|
* @return |
|
74
|
|
|
*/ |
|
75
|
|
|
protected function doReply(\PEIP\INF\Message\Message $message) |
|
76
|
|
|
{ |
|
77
|
|
|
$channels = (array) $this->selectChannels($message); |
|
78
|
|
|
foreach ($channels as $channel) { |
|
79
|
|
|
$this->setOutputChannel($this->resolveChannel($channel)); |
|
80
|
|
|
$this->replyMessage($message); |
|
81
|
|
|
} |
|
82
|
|
|
} |
|
83
|
|
|
|
|
84
|
|
|
/** |
|
85
|
|
|
* Resolves a channel from name or channel-instance. |
|
86
|
|
|
* Returns first argument directly if it is intance of \PEIP\INF\Channel\Channel. |
|
87
|
|
|
* Else resolves channel through registered channel-resolver. |
|
88
|
|
|
* |
|
89
|
|
|
* @param mixed $channel channel-name or instance of \PEIP\INF\Channel\Channel |
|
90
|
|
|
* |
|
91
|
|
|
* @return |
|
92
|
|
|
*/ |
|
93
|
|
|
protected function resolveChannel($channel) |
|
94
|
|
|
{ |
|
95
|
|
|
$this->doFireEvent(self::EVENT_PRE_RESOLVE, [self::HEADER_CHANNEL => $channel]); |
|
96
|
|
|
if (!($channel instanceof \PEIP\INF\Channel\Channel)) { |
|
97
|
|
|
$channelName = $channel; |
|
98
|
|
|
$channel = $this->channelResolver->resolveChannelName($channelName); |
|
99
|
|
|
if (!$channel) { |
|
100
|
|
|
$this->doFireEvent(self::EVENT_ERR_RESOLVE, [self::HEADER_CHANNEL_NAME => $channelName]); |
|
101
|
|
|
throw new \RuntimeException('Could not resolve Channel : '.$channelName); |
|
102
|
|
|
} |
|
103
|
|
|
} |
|
104
|
|
|
$this->doFireEvent(self::EVENT_POST_RESOLVE, [self::HEADER_CHANNEL => $channel]); |
|
105
|
|
|
|
|
106
|
|
|
return $channel; |
|
107
|
|
|
} |
|
108
|
|
|
|
|
109
|
|
|
/** |
|
110
|
|
|
* Selects channel(s) to route given message to. |
|
111
|
|
|
* |
|
112
|
|
|
* @abstract |
|
113
|
|
|
* |
|
114
|
|
|
* @param \PEIP\INF\Message\Message $message message to route |
|
115
|
|
|
*/ |
|
116
|
|
|
abstract protected function selectChannels(\PEIP\INF\Message\Message $message); |
|
117
|
|
|
} |
|
118
|
|
|
|
tidal /
PEIP
