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<?php |
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namespace Drupal\graphql\Plugin\GraphQL; |
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use Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException; |
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use Drupal\Core\DependencyInjection\DependencySerializationTrait; |
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class PluggableSchemaBuilder implements PluggableSchemaBuilderInterface { |
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use DependencySerializationTrait { |
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__sleep as sleepDependencies; |
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} |
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/** |
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* The type system plugin manager aggregator service. |
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* |
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* @var \Drupal\graphql\Plugin\GraphQL\TypeSystemPluginManagerAggregator |
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*/ |
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protected $pluginManagers; |
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/** |
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* Static cache of type system plugin instances. |
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* |
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* @var \Drupal\graphql\Plugin\GraphQL\TypeSystemPluginInterface |
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*/ |
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protected $instances = []; |
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/** |
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* PluggableSchemaBuilder constructor. |
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* |
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* @param \Drupal\graphql\Plugin\GraphQL\TypeSystemPluginManagerAggregator $pluginManagers |
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* Type system plugin manager aggregator service. |
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*/ |
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public function __construct(TypeSystemPluginManagerAggregator $pluginManagers) { |
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$this->pluginManagers = $pluginManagers; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getInstance($pluginType, $pluginId, array $pluginConfiguration = []) { |
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$cid = $this->getCacheIdentifier($pluginType, $pluginId, $pluginConfiguration); |
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if (!isset($this->instances[$cid])) { |
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$manager = $this->pluginManagers->getPluginManager($pluginType); |
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if (empty($manager)) { |
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throw new \LogicException(sprintf('Could not find %s plugin manager for plugin %s.', $pluginType, $pluginId)); |
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} |
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// We do not allow plugin configuration for now. |
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$instance = $manager->createInstance($pluginId, $pluginConfiguration); |
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if (empty($instance)) { |
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throw new \LogicException(sprintf('Failed to instantiate plugin %s of type %s.', $pluginId, $pluginType)); |
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} |
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$this->instances[$cid] = $instance; |
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} |
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return $this->instances[$cid]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function find(callable $selector, array $types) { |
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$items = []; |
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/** @var \Drupal\graphql\Plugin\GraphQL\TypeSystemPluginManagerInterface $manager */ |
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foreach ($this->pluginManagers as $type => $manager) { |
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if (!in_array($type, $types)) { |
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continue; |
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} |
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foreach ($manager->getDefinitions() as $id => $definition) { |
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$name = $definition['name']; |
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if (!array_key_exists($name, $items) || $items[$name]['weight'] < $definition['weight']) { |
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if (($priority = $selector($definition)) !== NULL) { |
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$items[$name] = [ |
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'weight' => $definition['weight'], |
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'id' => $id, |
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'type' => $type, |
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'priority' => (int) $priority, |
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]; |
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} |
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} |
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} |
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} |
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// Sort the plugins so that the ones with higher weight come first. |
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usort($items, function (array $a, array $b) { |
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if ($a['priority'] === $b['priority']) { |
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if ($a['weight'] === $b['weight']) { |
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return 0; |
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} |
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return ($a['weight'] < $b['weight']) ? 1 : -1; |
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} |
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return ($a['priority'] < $b['priority']) ? 1 : -1; |
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}); |
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return array_map(function (array $item) { |
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return $this->getInstance($item['type'], $item['id']); |
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}, $items); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findByName($name, array $types) { |
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$parts = explode(':', $name); |
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$chain = array_reverse(array_reduce($parts, function ($carry, $current) { |
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return $carry + [implode(':', array_filter([end($carry), $current]))]; |
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}, []), TRUE); |
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$result = $this->find(function($definition) use ($name, $chain) { |
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if (!empty($definition['type'])) { |
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foreach ($chain as $priority => $part) { |
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if ($definition['type'] === $part) { |
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return $priority + 1; |
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} |
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} |
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} |
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if ($definition['name'] === $name) { |
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return 0; |
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} |
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return NULL; |
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}, $types); |
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if (empty($result)) { |
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return $this->getInstance('scalar', 'undefined'); |
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} |
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return array_pop($result); |
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} |
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/** |
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* Creates a plugin instance cache identifier. |
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* |
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* @param string $pluginType |
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* The plugin type. |
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* @param string $pluginId |
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* The plugin id. |
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* @param array $pluginConfiguration |
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* The plugin configuration. |
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* |
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* @return string |
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*/ |
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protected function getCacheIdentifier($pluginType, $pluginId, array $pluginConfiguration) { |
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if (empty($pluginConfiguration)) { |
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return "$pluginType:::$pluginId"; |
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} |
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$configCid = md5(serialize($this->sortRecursive($pluginConfiguration))); |
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return "$pluginType:::$pluginId:::$configCid"; |
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} |
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/** |
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* Recursively sorts an array. |
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* |
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* Useful for generating a cache identifiers. |
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* |
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* @param array $subject |
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* The array to sort. |
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* |
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* @return array |
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* The sorted array. |
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*/ |
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protected function sortRecursive(array $subject) { |
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asort($subject); |
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foreach ($subject as $key => $item) { |
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if (is_array($item)) { |
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$subject[$key] = $this->sortRecursive($item); |
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} |
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} |
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return $subject; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __sleep() { |
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// Don't write the plugin instances into the cache. |
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return array_diff($this->sleepDependencies(), ['instances']); |
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} |
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} |
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drupal-graphql /
graphql
