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Adds support for Tokenizer listeners (#10)
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@@ -14,7 +14,7 @@ jobs: | |
| strategy: | ||
| fail-fast: false | ||
| matrix: | ||
| php: [ 8.0 ] | ||
| php: [ 8.1 ] | ||
| os: [ ubuntu-latest ] | ||
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| steps: | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| <?php | ||
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| declare(strict_types=1); | ||
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| namespace Spiral\Cqrs; | ||
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| use ReflectionMethod; | ||
| use Spiral\Attributes\ReaderInterface; | ||
| use Spiral\Cqrs\Attribute\CommandHandler; | ||
| use Spiral\Cqrs\Attribute\QueryHandler; | ||
| use Spiral\Cqrs\Exception\InvalidHandlerException; | ||
| use Spiral\Tokenizer\TokenizationListenerInterface; | ||
| use Spiral\Tokenizer\Attribute\TargetAttribute; | ||
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| /** | ||
| * @psalm-suppress InvalidAttribute | ||
| * @psalm-suppress UndefinedAttributeClass | ||
| */ | ||
| #[TargetAttribute(CommandHandler::class)] | ||
| #[TargetAttribute(QueryHandler::class)] | ||
| final class CqrsAttributesListener implements TokenizationListenerInterface | ||
| { | ||
| private array $commandHandlers = []; | ||
| private array $queryHandlers = []; | ||
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| public function __construct( | ||
| private readonly ReaderInterface $reader, | ||
| private readonly HandlersRegistryInterface $registry, | ||
| ) { | ||
| } | ||
|
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| public function listen(\ReflectionClass $class): void | ||
| { | ||
| foreach ($class->getMethods() as $method) { | ||
| if ($this->reader->firstFunctionMetadata($method, CommandHandler::class)) { | ||
| $this->assertHandlerMethodIsPublic($method); | ||
| $this->processCommandHandler($method); | ||
| } | ||
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| if ($this->reader->firstFunctionMetadata($method, QueryHandler::class)) { | ||
| $this->assertHandlerMethodIsPublic($method); | ||
| $this->processQueryHandler($method); | ||
| } | ||
| } | ||
| } | ||
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| public function finalize(): void | ||
| { | ||
| foreach ($this->commandHandlers as $command => $handlers) { | ||
| foreach ($handlers as $handler) { | ||
| $this->registry->registerCommandHandler($command, $handler); | ||
| } | ||
| } | ||
|
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| foreach ($this->queryHandlers as $command => $handlers) { | ||
| foreach ($handlers as $handler) { | ||
| $this->registry->registerQueryHandler($command, $handler); | ||
| } | ||
| } | ||
| } | ||
|
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| private function processCommandHandler(ReflectionMethod $method): void | ||
| { | ||
| $this->assertHandlerMethodIsPublic($method); | ||
|
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| foreach ($this->getMethodParameters($method) as $parameter) { | ||
| if (\is_a($parameter->getName(), CommandInterface::class, true)) { | ||
| $this->commandHandlers[$parameter->getName()][] = [ | ||
| $method->getDeclaringClass()->getName(), | ||
| $method->getName(), | ||
| ]; | ||
| } | ||
| } | ||
| } | ||
|
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| private function processQueryHandler(ReflectionMethod $method) | ||
| { | ||
| $this->assertHandlerMethodIsPublic($method); | ||
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| foreach ($this->getMethodParameters($method) as $parameter) { | ||
| if (\is_a($parameter->getName(), QueryInterface::class, true)) { | ||
| $this->queryHandlers[$parameter->getName()][] = [ | ||
| $method->getDeclaringClass()->getName(), | ||
| $method->getName(), | ||
| ]; | ||
| } | ||
| } | ||
| } | ||
|
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| /** | ||
| * @throws InvalidHandlerException | ||
| */ | ||
| private function assertHandlerMethodIsPublic(ReflectionMethod $method): void | ||
| { | ||
| if (! $method->isPublic()) { | ||
| throw new InvalidHandlerException( | ||
| \sprintf( | ||
| 'Handler method %s:%s should be public.', | ||
| $method->getDeclaringClass()->getName(), | ||
| $method->getName() | ||
| ) | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @return \Generator<int, \ReflectionNamedType|\ReflectionType|null> | ||
| */ | ||
| private function getMethodParameters(ReflectionMethod $method): \Generator | ||
| { | ||
| foreach ($method->getParameters() as $parameter) { | ||
| if ($parameter->getType() instanceof \ReflectionUnionType) { | ||
| foreach ($parameter->getType()->getTypes() as $type) { | ||
| yield $type; | ||
| } | ||
| } else { | ||
| yield $parameter->getType(); | ||
| } | ||
| } | ||
| } | ||
| } |
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