|
1
|
|
|
<?php declare(strict_types=1); |
|
2
|
|
|
/** |
|
3
|
|
|
* This file is part of the daikon-cqrs/message-bus project. |
|
4
|
|
|
* |
|
5
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
6
|
|
|
* file that was distributed with this source code. |
|
7
|
|
|
*/ |
|
8
|
|
|
|
|
9
|
|
|
namespace Daikon\MessageBus; |
|
10
|
|
|
|
|
11
|
|
|
use Daikon\MessageBus\Channel\ChannelInterface; |
|
12
|
|
|
use Daikon\MessageBus\Channel\ChannelMap; |
|
13
|
|
|
use Daikon\MessageBus\Exception\ChannelUnknown; |
|
14
|
|
|
use Daikon\MessageBus\Exception\EnvelopeNotAcceptable; |
|
15
|
|
|
use Daikon\Metadata\MetadataInterface; |
|
16
|
|
|
use Daikon\Metadata\Metadata; |
|
17
|
|
|
use Daikon\Metadata\MetadataEnricherInterface; |
|
18
|
|
|
use Daikon\Metadata\MetadataEnricherList; |
|
19
|
|
|
|
|
20
|
|
|
final class MessageBus implements MessageBusInterface |
|
21
|
|
|
{ |
|
22
|
|
|
private ChannelMap $channelMap; |
|
23
|
|
|
|
|
24
|
|
|
private MetadataEnricherList $metadataEnrichers; |
|
25
|
|
|
|
|
26
|
|
|
private string $envelopeType; |
|
27
|
|
|
|
|
28
|
5 |
|
public function __construct( |
|
29
|
|
|
ChannelMap $channelMap, |
|
30
|
|
|
MetadataEnricherList $metadataEnrichers = null, |
|
31
|
|
|
string $envelopeType = null |
|
32
|
|
|
) { |
|
33
|
5 |
|
$this->channelMap = $channelMap; |
|
34
|
5 |
|
$this->metadataEnrichers = $metadataEnrichers ?? new MetadataEnricherList; |
|
35
|
5 |
|
$this->envelopeType = $envelopeType ?? Envelope::class; |
|
36
|
5 |
|
} |
|
37
|
|
|
|
|
38
|
2 |
|
public function publish(MessageInterface $message, string $channelKey, MetadataInterface $metadata = null): void |
|
39
|
|
|
{ |
|
40
|
2 |
|
if (!$this->channelMap->has($channelKey)) { |
|
41
|
1 |
|
throw new ChannelUnknown("Channel '$channelKey' has not been registered on message bus."); |
|
42
|
|
|
} |
|
43
|
1 |
|
$metadata = $this->enrichMetadata($metadata ?? Metadata::makeEmpty()); |
|
44
|
|
|
/** @var EnvelopeInterface $envelope */ |
|
45
|
1 |
|
$envelope = $this->envelopeType::wrap($message, $metadata); |
|
46
|
|
|
/** @var ChannelInterface $channel */ |
|
47
|
1 |
|
$channel = $this->channelMap->get($channelKey); |
|
48
|
1 |
|
$channel->publish($envelope, $this); |
|
49
|
1 |
|
} |
|
50
|
|
|
|
|
51
|
3 |
|
public function receive(EnvelopeInterface $envelope): void |
|
52
|
|
|
{ |
|
53
|
3 |
|
$this->verify($envelope); |
|
54
|
2 |
|
$channelKey = (string)$envelope->getMetadata()->get(ChannelInterface::METADATA_KEY); |
|
55
|
2 |
|
if (!$this->channelMap->has($channelKey)) { |
|
56
|
1 |
|
throw new ChannelUnknown("Channel '$channelKey' has not been registered on message bus."); |
|
57
|
|
|
} |
|
58
|
|
|
/** @var ChannelInterface $channel */ |
|
59
|
1 |
|
$channel = $this->channelMap->get($channelKey); |
|
60
|
1 |
|
$channel->receive($envelope); |
|
61
|
1 |
|
} |
|
62
|
|
|
|
|
63
|
1 |
|
private function enrichMetadata(MetadataInterface $metadata): MetadataInterface |
|
64
|
|
|
{ |
|
65
|
1 |
|
return array_reduce( |
|
66
|
1 |
|
$this->metadataEnrichers->unwrap(), |
|
67
|
1 |
|
function (MetadataInterface $metadata, MetadataEnricherInterface $metadataEnricher): MetadataInterface { |
|
68
|
|
|
return $metadataEnricher->enrich($metadata); |
|
69
|
1 |
|
}, |
|
70
|
|
|
$metadata |
|
71
|
|
|
); |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
3 |
|
private function verify(EnvelopeInterface $envelope): void |
|
75
|
|
|
{ |
|
76
|
3 |
|
$metadata = $envelope->getMetadata(); |
|
77
|
3 |
|
if (!$metadata->has(ChannelInterface::METADATA_KEY)) { |
|
78
|
1 |
|
throw new EnvelopeNotAcceptable( |
|
79
|
|
|
"Channel key '".ChannelInterface::METADATA_KEY."' missing in metadata of ". |
|
80
|
1 |
|
"Envelope '{$envelope->getUuid()->toString()}' received on message bus.", |
|
81
|
1 |
|
EnvelopeNotAcceptable::CHANNEL_KEY_MISSING |
|
82
|
|
|
); |
|
83
|
|
|
} |
|
84
|
2 |
|
} |
|
85
|
|
|
} |
|
86
|
|
|
|
daikon-cqrs /
message-bus
