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<?php |
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declare(strict_types=1); |
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namespace EventSauce\EventSourcing\CodeGeneration; |
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use InvalidArgumentException; |
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use function is_array; |
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use Symfony\Component\Yaml\Yaml; |
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use const PATHINFO_EXTENSION; |
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use function file_get_contents; |
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use function in_array; |
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use function is_string; |
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use function pathinfo; |
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class YamlDefinitionLoader implements DefinitionLoader |
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{ |
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public function canLoad(string $filename): bool |
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{ |
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return in_array(pathinfo($filename, PATHINFO_EXTENSION), ['yaml', 'yml']); |
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} |
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public function load(string $filename, DefinitionGroup $definitionGroup = null): DefinitionGroup |
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{ |
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$fileContents = file_get_contents($filename); |
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if ( ! is_string($fileContents) || empty($fileContents)) { |
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throw new InvalidArgumentException("File {$filename} does not contain anything"); |
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} |
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$definition = Yaml::parse($fileContents); |
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if ( ! is_array($definition)) { |
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throw new InvalidArgumentException('The definition is incorrectly formatted'); |
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} |
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$definitionGroup = $definitionGroup ?: new DefinitionGroup(); |
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if (isset($definition['namespace'])) { |
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$definitionGroup->withNamespace($definition['namespace']); |
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} |
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$this->loadTypeHandlers($definitionGroup, $definition['types'] ?? []); |
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$this->loadFieldDefaults($definitionGroup, $definition['fields'] ?? []); |
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$this->loadCommands($definitionGroup, $definition['commands'] ?? []); |
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$this->loadEvents($definitionGroup, $definition['events'] ?? []); |
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return $definitionGroup; |
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} |
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private function loadTypeHandlers(DefinitionGroup $definitionGroup, array $types) |
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{ |
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foreach ($types as $type => $handlers) { |
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if (isset($handlers['type'])) { |
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$definitionGroup->aliasType($type, $handlers['type']); |
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} |
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if (isset($handlers['serializer'])) { |
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$definitionGroup->typeSerializer($type, $handlers['serializer']); |
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} |
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if (isset($handlers['deserializer'])) { |
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$definitionGroup->typeDeserializer($type, $handlers['deserializer']); |
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} |
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} |
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} |
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private function loadCommands(DefinitionGroup $definitionGroup, array $commands) |
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{ |
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foreach ($commands as $commandName => $commandDefinition) { |
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$fields = $commandDefinition['fields'] ?? []; |
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$command = $definitionGroup->command($commandName); |
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$command->withFieldsFrom($commandDefinition['fields_from'] ?? ''); |
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foreach ($fields as $fieldName => $fieldDefinition) { |
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if (is_string($fieldDefinition)) { |
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$fieldDefinition = ['type' => $fieldDefinition]; |
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} |
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$type = $fieldDefinition['type'] ?? $definitionGroup->typeForField($fieldName); |
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$command->field($fieldName, TypeNormalizer::normalize($type), $fieldDefinition['example'] ?? null); |
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if (isset($fieldDefinition['serializer'])) { |
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$command->fieldSerializer($fieldName, $fieldDefinition['serializer']); |
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} |
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if (isset($fieldDefinition['deserializer'])) { |
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$command->fieldDeserializer($fieldName, $fieldDefinition['deserializer']); |
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} |
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} |
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} |
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} |
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private function loadEvents(DefinitionGroup $definitionGroup, array $events) |
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{ |
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foreach ($events as $eventName => $eventDefinition) { |
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$event = $definitionGroup->event($eventName); |
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$event->withFieldsFrom($eventDefinition['fields_from'] ?? ''); |
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$fields = $eventDefinition['fields'] ?? []; |
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foreach ($fields as $fieldName => $fieldDefinition) { |
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if (is_string($fieldDefinition)) { |
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$fieldDefinition = ['type' => TypeNormalizer::normalize($fieldDefinition)]; |
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} |
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$type = $fieldDefinition['type'] ?? $definitionGroup->typeForField($fieldName); |
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$event->field($fieldName, TypeNormalizer::normalize($type), (string) ($fieldDefinition['example'] ?? null)); |
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if (isset($fieldDefinition['serializer'])) { |
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$event->fieldSerializer($fieldName, $fieldDefinition['serializer']); |
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} |
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if (isset($fieldDefinition['deserializer'])) { |
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$event->fieldDeserializer($fieldName, $fieldDefinition['deserializer']); |
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} |
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} |
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} |
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} |
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private function loadFieldDefaults(DefinitionGroup $definitionGroup, array $defaults) |
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{ |
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foreach ($defaults as $field => $default) { |
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$definitionGroup->fieldDefault($field, $default['type'], $default['example'] ?? null); |
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if (isset($default['serializer'])) { |
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$definitionGroup->fieldSerializer($field, $default['serializer']); |
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} |
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if (isset($default['deserializer'])) { |
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$definitionGroup->fieldDeserializer($field, $default['deserializer']); |
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} |
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} |
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} |
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} |
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EventSaucePHP /
EventSauce
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