|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Copyright (c) 2017 Constantin Galbenu <[email protected]> |
|
4
|
|
|
*/ |
|
5
|
|
|
|
|
6
|
|
|
namespace Gica\Cqrs\Command\CommandDispatcher; |
|
7
|
|
|
|
|
8
|
|
|
use Gica\Cqrs\Aggregate\AggregateRepository; |
|
9
|
|
|
use Gica\Cqrs\Command; |
|
10
|
|
|
use Gica\Cqrs\Command\CommandApplier; |
|
11
|
|
|
use Gica\Cqrs\Command\CommandDispatcher; |
|
12
|
|
|
use Gica\Cqrs\Command\CommandSubscriber; |
|
13
|
|
|
use Gica\Cqrs\Command\CommandWithMetadata; |
|
14
|
|
|
use Gica\Cqrs\Command\MetadataWrapper as CommandMetadataFactory; |
|
15
|
|
|
use Gica\Cqrs\Command\ValueObject\CommandHandlerAndAggregate; |
|
16
|
|
|
use Gica\Cqrs\Event\EventDispatcher; |
|
17
|
|
|
use Gica\Cqrs\Event\EventsApplier\EventsApplierOnAggregate; |
|
18
|
|
|
use Gica\Cqrs\Event\EventWithMetaData; |
|
19
|
|
|
use Gica\Cqrs\Event\MetaData; |
|
20
|
|
|
use Gica\Cqrs\Event\MetadataFactory as EventMetadataFactory; |
|
21
|
|
|
use Gica\Cqrs\Event\ScheduledEvent; |
|
22
|
|
|
use Gica\Cqrs\FutureEventsStore; |
|
23
|
|
|
use Gica\Cqrs\Scheduling\CommandScheduler; |
|
24
|
|
|
use Gica\Cqrs\Scheduling\ScheduledCommand; |
|
25
|
|
|
use Gica\Types\Guid; |
|
26
|
|
|
|
|
27
|
|
|
class DefaultCommandDispatcher implements CommandDispatcher |
|
28
|
|
|
{ |
|
29
|
|
|
const MAXIMUM_SAVE_RETRIES = 50; |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* @var CommandSubscriber |
|
33
|
|
|
*/ |
|
34
|
|
|
private $commandSubscriber; |
|
35
|
|
|
/** |
|
36
|
|
|
* @var EventDispatcher |
|
37
|
|
|
*/ |
|
38
|
|
|
private $eventDispatcher; |
|
39
|
|
|
/** |
|
40
|
|
|
* @var CommandApplier |
|
41
|
|
|
*/ |
|
42
|
|
|
private $commandApplier; |
|
43
|
|
|
/** |
|
44
|
|
|
* @var AggregateRepository |
|
45
|
|
|
*/ |
|
46
|
|
|
private $aggregateRepository; |
|
47
|
|
|
/** |
|
48
|
|
|
* @var ConcurrentProofFunctionCaller |
|
49
|
|
|
*/ |
|
50
|
|
|
private $concurrentProofFunctionCaller; |
|
51
|
|
|
/** |
|
52
|
|
|
* @var FutureEventsStore|null |
|
53
|
|
|
*/ |
|
54
|
|
|
private $futureEventsStore; |
|
55
|
|
|
/** |
|
56
|
|
|
* @var EventsApplierOnAggregate |
|
57
|
|
|
*/ |
|
58
|
|
|
private $eventsApplierOnAggregate; |
|
59
|
|
|
/** |
|
60
|
|
|
* @var CommandScheduler|null |
|
61
|
|
|
*/ |
|
62
|
|
|
private $commandScheduler; |
|
63
|
|
|
/** |
|
64
|
|
|
* @var EventMetadataFactory |
|
65
|
|
|
*/ |
|
66
|
|
|
private $eventMetadataFactory; |
|
67
|
|
|
/** |
|
68
|
|
|
* @var CommandMetadataFactory |
|
69
|
|
|
*/ |
|
70
|
|
|
private $commandMetadataFactory; |
|
71
|
|
|
|
|
72
|
5 |
|
public function __construct( |
|
73
|
|
|
CommandSubscriber $commandSubscriber, |
|
74
|
|
|
EventDispatcher $eventDispatcher, |
|
75
|
|
|
CommandApplier $commandApplier, |
|
76
|
|
|
AggregateRepository $aggregateRepository, |
|
77
|
|
|
ConcurrentProofFunctionCaller $functionCaller, |
|
78
|
|
|
EventsApplierOnAggregate $eventsApplier, |
|
79
|
|
|
EventMetadataFactory $eventMetadataFactory, |
|
80
|
|
|
CommandMetadataFactory $commandMetadataFactory, |
|
81
|
|
|
?FutureEventsStore $futureEventsStore = null, |
|
82
|
|
|
?CommandScheduler $commandScheduler = null |
|
83
|
|
|
) |
|
84
|
|
|
{ |
|
85
|
5 |
|
$this->commandSubscriber = $commandSubscriber; |
|
86
|
5 |
|
$this->eventDispatcher = $eventDispatcher; |
|
87
|
5 |
|
$this->commandApplier = $commandApplier; |
|
88
|
5 |
|
$this->aggregateRepository = $aggregateRepository; |
|
89
|
5 |
|
$this->concurrentProofFunctionCaller = $functionCaller; |
|
90
|
5 |
|
$this->futureEventsStore = $futureEventsStore; |
|
91
|
5 |
|
$this->eventsApplierOnAggregate = $eventsApplier; |
|
92
|
5 |
|
$this->commandScheduler = $commandScheduler; |
|
93
|
5 |
|
$this->eventMetadataFactory = $eventMetadataFactory; |
|
94
|
5 |
|
$this->commandMetadataFactory = $commandMetadataFactory; |
|
95
|
5 |
|
} |
|
96
|
|
|
|
|
97
|
4 |
|
public function dispatchCommand(Command $command, $metadata = null) |
|
98
|
|
|
{ |
|
99
|
4 |
|
$command = $this->commandMetadataFactory->wrapCommandWithMetadata($command, $metadata); |
|
100
|
|
|
|
|
101
|
|
|
/** @var EventWithMetaData[] $eventsWithMetaData */ |
|
102
|
|
|
/** @var ScheduledCommand[] $scheduledCommands */ |
|
103
|
|
|
|
|
104
|
4 |
|
list($eventsWithMetaData, $futureEventsWithMeta, $scheduledCommands, $aggregateClass) = $this->concurrentProofFunctionCaller->executeFunction(function () use ($command) { |
|
105
|
4 |
|
return $this->tryDispatchCommandAndSaveAggregate($command); |
|
106
|
4 |
|
}, $this->getMaximumCommandRetryCount()); |
|
107
|
|
|
|
|
108
|
3 |
|
foreach ($eventsWithMetaData as $eventWithMetaData) { |
|
109
|
3 |
|
$this->eventDispatcher->dispatchEvent($eventWithMetaData); |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
3 |
|
if ($this->futureEventsStore && !empty($futureEventsWithMeta)) { |
|
113
|
1 |
|
$this->futureEventsStore->scheduleEvents($futureEventsWithMeta); |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
3 |
|
if ($this->commandScheduler && !empty($scheduledCommands)) { |
|
117
|
1 |
|
foreach ($scheduledCommands as $scheduledCommand) { |
|
118
|
1 |
|
$this->commandScheduler->scheduleCommand($scheduledCommand, $aggregateClass, $command->getAggregateId(), $metadata); |
|
119
|
|
|
} |
|
120
|
|
|
} |
|
121
|
3 |
|
} |
|
122
|
|
|
|
|
123
|
4 |
|
private function tryDispatchCommandAndSaveAggregate(CommandWithMetadata $command) |
|
124
|
|
|
{ |
|
125
|
4 |
|
$handlerAndAggregate = $this->loadCommandHandlerAndAggregate($command); |
|
126
|
|
|
|
|
127
|
4 |
|
list($eventsForNow, $eventsForTheFuture, $scheduledCommands) = $this->applyCommandAndReturnMessages($command, $handlerAndAggregate); |
|
128
|
|
|
|
|
129
|
3 |
|
$eventsForNow = $this->aggregateRepository->saveAggregate($command->getAggregateId(), $handlerAndAggregate->getAggregate(), $eventsForNow); |
|
130
|
|
|
|
|
131
|
3 |
|
return [$eventsForNow, $eventsForTheFuture, $scheduledCommands, $handlerAndAggregate->getCommandHandler()->getHandlerClass()]; |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
3 |
|
public function canExecuteCommand(Command $command): bool |
|
135
|
|
|
{ |
|
136
|
|
|
try { |
|
137
|
3 |
|
$command = $this->commandMetadataFactory->wrapCommandWithMetadata($command, null); |
|
138
|
3 |
|
$this->applyCommandAndReturnMessages($command, $this->loadCommandHandlerAndAggregate($command)); |
|
139
|
2 |
|
return true; |
|
140
|
1 |
|
} catch (\Exception $exception) { |
|
141
|
1 |
|
return false; |
|
142
|
|
|
} |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
5 |
|
private function loadCommandHandlerAndAggregate(CommandWithMetadata $command): CommandHandlerAndAggregate |
|
146
|
|
|
{ |
|
147
|
5 |
|
$handler = $this->commandSubscriber->getHandlerForCommand($command->getCommand()); |
|
148
|
|
|
|
|
149
|
5 |
|
$aggregate = $this->aggregateRepository->loadAggregate($handler->getHandlerClass(), $command->getAggregateId()); |
|
150
|
|
|
|
|
151
|
5 |
|
return new CommandHandlerAndAggregate($handler, $aggregate); |
|
152
|
|
|
} |
|
153
|
|
|
|
|
154
|
3 |
|
private function decorateEventWithMetaData($event, MetaData $metaData): EventWithMetaData |
|
155
|
|
|
{ |
|
156
|
3 |
|
return new EventWithMetaData($event, $metaData->withEventId(Guid::generate())); |
|
157
|
|
|
} |
|
158
|
|
|
|
|
159
|
|
|
/** |
|
160
|
|
|
* @param CommandWithMetadata $command |
|
161
|
|
|
* @param CommandHandlerAndAggregate $handlerAndAggregate |
|
162
|
|
|
* @return array |
|
163
|
|
|
*/ |
|
164
|
5 |
|
private function applyCommandAndReturnMessages(CommandWithMetadata $command, CommandHandlerAndAggregate $handlerAndAggregate) |
|
165
|
|
|
{ |
|
166
|
5 |
|
$aggregate = $handlerAndAggregate->getAggregate(); |
|
167
|
5 |
|
$handler = $handlerAndAggregate->getCommandHandler(); |
|
168
|
|
|
|
|
169
|
5 |
|
$metaData = $this->eventMetadataFactory->factoryEventMetadata($command, $aggregate); |
|
170
|
|
|
|
|
171
|
5 |
|
$newMessageGenerator = $this->commandApplier->applyCommand($aggregate, $command->getCommand(), $handler->getMethodName()); |
|
172
|
|
|
|
|
173
|
|
|
/** @var EventWithMetaData[] $eventsWithMetaData */ |
|
174
|
5 |
|
$eventsWithMetaData = []; |
|
175
|
|
|
|
|
176
|
|
|
/** @var EventWithMetaData[] $scheduledEvents */ |
|
177
|
5 |
|
$scheduledEvents = []; |
|
178
|
|
|
|
|
179
|
|
|
/** @var ScheduledCommand[] $scheduledCommands */ |
|
180
|
5 |
|
$scheduledCommands = []; |
|
181
|
|
|
|
|
182
|
5 |
|
foreach ($newMessageGenerator as $message) { |
|
183
|
3 |
|
if ($this->isScheduledCommand($message)) { |
|
184
|
1 |
|
$scheduledCommands[] = $message; |
|
185
|
|
|
} else { |
|
186
|
3 |
|
$eventWithMetaData = $this->decorateEventWithMetaData($message, $metaData); |
|
187
|
3 |
|
if (!$this->isScheduledEvent($message)) { |
|
188
|
3 |
|
$this->eventsApplierOnAggregate->applyEventsOnAggregate($aggregate, [$eventWithMetaData]); |
|
189
|
3 |
|
$eventsWithMetaData[] = $eventWithMetaData; |
|
190
|
|
|
} else { |
|
191
|
3 |
|
$scheduledEvents[] = $eventWithMetaData; |
|
192
|
|
|
} |
|
193
|
|
|
} |
|
194
|
|
|
} |
|
195
|
|
|
|
|
196
|
3 |
|
return [$eventsWithMetaData, $scheduledEvents, $scheduledCommands]; |
|
197
|
|
|
} |
|
198
|
|
|
|
|
199
|
3 |
|
private function isScheduledEvent($event): bool |
|
200
|
|
|
{ |
|
201
|
3 |
|
return $event instanceof ScheduledEvent; |
|
202
|
|
|
} |
|
203
|
|
|
|
|
204
|
3 |
|
private function isScheduledCommand($message): bool |
|
205
|
|
|
{ |
|
206
|
3 |
|
return $message instanceof ScheduledCommand; |
|
207
|
|
|
} |
|
208
|
|
|
|
|
209
|
4 |
|
protected function getMaximumCommandRetryCount(): int |
|
210
|
|
|
{ |
|
211
|
4 |
|
return self::MAXIMUM_SAVE_RETRIES; |
|
212
|
|
|
} |
|
213
|
|
|
} |
xprt64 /
cqrs-es
