|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Copyright (c) 2017 Constantin Galbenu <[email protected]> |
|
4
|
|
|
*/ |
|
5
|
|
|
|
|
6
|
|
|
namespace Gica\Cqrs\Saga; |
|
7
|
|
|
|
|
8
|
|
|
|
|
9
|
|
|
use Gica\CodeAnalysis\MethodListenerDiscovery; |
|
10
|
|
|
use Gica\CodeAnalysis\MethodListenerDiscovery\ListenerClassValidator\AnyPhpClassIsAccepted; |
|
11
|
|
|
use Gica\CodeAnalysis\MethodListenerDiscovery\ListenerMethod; |
|
12
|
|
|
use Gica\Cqrs\Command\CodeAnalysis\WriteSideEventHandlerDetector; |
|
13
|
|
|
use Gica\Cqrs\Event\EventWithMetaData; |
|
14
|
|
|
use Gica\Cqrs\EventProcessing\ConcurentEventProcessingException; |
|
15
|
|
|
use Gica\Cqrs\EventStore; |
|
16
|
|
|
use Gica\Cqrs\ProgressReporting\TaskProgressCalculator; |
|
17
|
|
|
use Gica\Cqrs\ProgressReporting\TaskProgressReporter; |
|
18
|
|
|
use Gica\Cqrs\Saga\SagaRunner\EventProcessingHasStalled; |
|
19
|
|
|
use Psr\Log\LoggerInterface; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* This class can be run in background to feed a saga with events |
|
23
|
|
|
*/ |
|
24
|
|
|
class SagaRunner |
|
25
|
|
|
{ |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* @var EventStore |
|
29
|
|
|
*/ |
|
30
|
|
|
private $eventStore; |
|
31
|
|
|
/** |
|
32
|
|
|
* @var LoggerInterface |
|
33
|
|
|
*/ |
|
34
|
|
|
private $logger; |
|
35
|
|
|
/** |
|
36
|
|
|
* @var SagaEventTrackerRepository |
|
37
|
|
|
*/ |
|
38
|
|
|
private $sagaRepository; |
|
39
|
|
|
/** |
|
40
|
|
|
* @var TaskProgressReporter|null |
|
41
|
|
|
*/ |
|
42
|
|
|
private $taskProgressReporter; |
|
43
|
|
|
|
|
44
|
4 |
|
public function __construct( |
|
45
|
|
|
EventStore $eventStore, |
|
46
|
|
|
LoggerInterface $logger, |
|
47
|
|
|
SagaEventTrackerRepository $sagaRepository |
|
48
|
|
|
) |
|
49
|
|
|
{ |
|
50
|
4 |
|
$this->eventStore = $eventStore; |
|
51
|
4 |
|
$this->logger = $logger; |
|
52
|
4 |
|
$this->sagaRepository = $sagaRepository; |
|
53
|
4 |
|
} |
|
54
|
|
|
|
|
55
|
1 |
|
public function setTaskProgressReporter(?TaskProgressReporter $taskProgressReporter) |
|
56
|
|
|
{ |
|
57
|
1 |
|
$this->taskProgressReporter = $taskProgressReporter; |
|
58
|
1 |
|
} |
|
59
|
|
|
|
|
60
|
4 |
|
public function feedSagaWithEvents($saga, ?int $afterSequence = null) |
|
61
|
|
|
{ |
|
62
|
4 |
|
$discoverer = new MethodListenerDiscovery( |
|
63
|
4 |
|
new WriteSideEventHandlerDetector(), |
|
64
|
4 |
|
new AnyPhpClassIsAccepted() |
|
65
|
|
|
); |
|
66
|
|
|
|
|
67
|
4 |
|
$allMethods = $discoverer->findListenerMethodsInClass(get_class($saga)); |
|
68
|
|
|
|
|
69
|
4 |
|
$eventClasses = $this->getEventClassesFromMethods($allMethods); |
|
70
|
|
|
|
|
71
|
4 |
|
$this->logger->info(print_r($eventClasses, true)); |
|
72
|
4 |
|
$this->logger->info("loading events..."); |
|
73
|
|
|
|
|
74
|
4 |
|
$allEvents = $this->eventStore->loadEventsByClassNames($eventClasses); |
|
75
|
|
|
|
|
76
|
4 |
|
if (null !== $afterSequence) { |
|
77
|
1 |
|
$allEvents->afterSequence($afterSequence); |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
4 |
|
$this->logger->info("processing events..."); |
|
81
|
|
|
|
|
82
|
4 |
|
$taskProgress = null; |
|
83
|
|
|
|
|
84
|
4 |
|
if ($this->taskProgressReporter) { |
|
85
|
1 |
|
$taskProgress = new TaskProgressCalculator($allEvents->countCommits()); |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
4 |
|
foreach ($allEvents->fetchCommits() as $eventsCommit) { |
|
89
|
|
|
|
|
90
|
3 |
|
$eventsCommit = $eventsCommit->filterEventsByClass($eventClasses); |
|
91
|
|
|
|
|
92
|
3 |
|
foreach ($eventsCommit->getEventsWithMetadata() as $eventWithMetadata) { |
|
93
|
3 |
|
$this->processEvent($saga, $eventWithMetadata, $allMethods); |
|
94
|
|
|
} |
|
95
|
|
|
|
|
96
|
2 |
|
if ($this->taskProgressReporter) { |
|
97
|
1 |
|
$taskProgress->increment(); |
|
98
|
2 |
|
$this->taskProgressReporter->reportProgressUpdate($taskProgress->getStep(), $taskProgress->getTotalSteps(), $taskProgress->calculateSpeed(), $taskProgress->calculateEta()); |
|
99
|
|
|
} |
|
100
|
|
|
} |
|
101
|
3 |
|
} |
|
102
|
|
|
|
|
103
|
|
|
/** |
|
104
|
|
|
* @param ListenerMethod[] $methods |
|
105
|
|
|
* @return array |
|
106
|
|
|
*/ |
|
107
|
4 |
|
private function getEventClassesFromMethods($methods) |
|
108
|
|
|
{ |
|
109
|
4 |
|
$eventClasses = []; |
|
110
|
4 |
|
foreach ($methods as $listenerMethod) { |
|
111
|
4 |
|
$eventClasses[] = $listenerMethod->getEventClassName(); |
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
4 |
|
return $eventClasses; |
|
115
|
|
|
} |
|
116
|
|
|
|
|
117
|
|
|
/** |
|
118
|
|
|
* @param string $eventClass |
|
119
|
|
|
* @param ListenerMethod[] $allMethods |
|
120
|
|
|
* @return ListenerMethod[] |
|
121
|
|
|
*/ |
|
122
|
3 |
|
private function findMethodsByEventClass(string $eventClass, $allMethods) |
|
123
|
|
|
{ |
|
124
|
3 |
|
$result = []; |
|
125
|
|
|
|
|
126
|
3 |
|
foreach ($allMethods as $listenerMethod) { |
|
127
|
3 |
|
if ($listenerMethod->getEventClassName() == $eventClass) { |
|
128
|
3 |
|
$result[] = $listenerMethod; |
|
129
|
|
|
} |
|
130
|
|
|
} |
|
131
|
|
|
|
|
132
|
3 |
|
return $result; |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
3 |
|
private function processEvent($saga, EventWithMetaData $eventWithMetadata, $allMethods): void |
|
136
|
|
|
{ |
|
137
|
|
|
/** @var EventWithMetaData $eventWithMetadata */ |
|
138
|
3 |
|
$methods = $this->findMethodsByEventClass(get_class($eventWithMetadata->getEvent()), $allMethods); |
|
139
|
3 |
|
$metaData = $eventWithMetadata->getMetaData(); |
|
140
|
|
|
|
|
141
|
3 |
|
$sagaId = get_class($saga); |
|
142
|
|
|
|
|
143
|
3 |
|
foreach ($methods as $method) { |
|
144
|
|
|
|
|
145
|
|
|
try { |
|
146
|
3 |
|
if ($this->sagaRepository->isEventProcessingAlreadyStarted($sagaId, $metaData->getEventId())) { |
|
147
|
2 |
|
if (!$this->sagaRepository->isEventProcessingAlreadyEnded($sagaId, $metaData->getEventId())) { |
|
148
|
2 |
|
throw new EventProcessingHasStalled($eventWithMetadata); |
|
149
|
|
|
} |
|
150
|
|
|
} else { |
|
151
|
2 |
|
$this->sagaRepository->startProcessingEvent($sagaId, $metaData->getEventId()); |
|
152
|
1 |
|
call_user_func([$saga, $method->getMethodName()], $eventWithMetadata->getEvent(), $eventWithMetadata->getMetaData()); |
|
153
|
1 |
|
$this->sagaRepository->endProcessingEvent($sagaId, $metaData->getEventId()); |
|
154
|
|
|
} |
|
155
|
2 |
|
} catch (ConcurentEventProcessingException $exception) { |
|
156
|
1 |
|
$this->logger->info("concurent event processing exception, skipping..."); |
|
157
|
2 |
|
continue; |
|
158
|
|
|
} |
|
159
|
|
|
} |
|
160
|
|
|
} |
|
161
|
|
|
} |
xprt64 /
cqrs-es
