AnnotatedClassDiscovery.php
Same filename in this branch
Same filename in other branches
- 9 core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php
- 9 core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
- 8.9.x core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php
- 8.9.x core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
- 11.x core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php
- 11.x core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
Namespace
Drupal\Component\Annotation\Plugin\DiscoveryFile
-
core/
lib/ Drupal/ Component/ Annotation/ Plugin/ Discovery/ AnnotatedClassDiscovery.php
View source
<?php
namespace Drupal\Component\Annotation\Plugin\Discovery;
use Drupal\Component\Annotation\AnnotationInterface;
use Drupal\Component\FileCache\FileCacheFactory;
use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
use Drupal\Component\Annotation\Doctrine\SimpleAnnotationReader;
use Drupal\Component\Annotation\Doctrine\StaticReflectionParser;
use Drupal\Component\Annotation\Reflection\MockFileFinder;
use Doctrine\Common\Annotations\AnnotationRegistry;
use Drupal\Component\Plugin\Discovery\DiscoveryTrait;
use Drupal\Component\Utility\Crypt;
/**
* Defines a discovery mechanism to find annotated plugins in PSR-4 namespaces.
*/
class AnnotatedClassDiscovery implements DiscoveryInterface {
use DiscoveryTrait;
/**
* The namespaces within which to find plugin classes.
*
* @var string[]
*/
protected $pluginNamespaces;
/**
* The name of the annotation that contains the plugin definition.
*
* The class corresponding to this name must implement
* \Drupal\Component\Annotation\AnnotationInterface.
*
* @var string
*/
protected $pluginDefinitionAnnotationName;
/**
* The doctrine annotation reader.
*
* @var \Doctrine\Common\Annotations\Reader
*/
protected $annotationReader;
/**
* Additional namespaces to be scanned for annotation classes.
*
* @var string[]
*/
protected $annotationNamespaces = [];
/**
* The file cache object.
*
* @var \Drupal\Component\FileCache\FileCacheInterface
*/
protected $fileCache;
/**
* Constructs a new instance.
*
* @param string[] $plugin_namespaces
* (optional) An array of namespace that may contain plugin implementations.
* Defaults to an empty array.
* @param string $plugin_definition_annotation_name
* (optional) The name of the annotation that contains the plugin definition.
* Defaults to 'Drupal\Component\Annotation\Plugin'.
* @param string[] $annotation_namespaces
* (optional) Additional namespaces to be scanned for annotation classes.
*/
public function __construct($plugin_namespaces = [], $plugin_definition_annotation_name = 'Drupal\\Component\\Annotation\\Plugin', array $annotation_namespaces = []) {
$this->pluginNamespaces = $plugin_namespaces;
$this->pluginDefinitionAnnotationName = $plugin_definition_annotation_name;
$this->annotationNamespaces = $annotation_namespaces;
$file_cache_suffix = str_replace('\\', '_', $plugin_definition_annotation_name);
$file_cache_suffix .= ':' . Crypt::hashBase64(serialize($annotation_namespaces));
$this->fileCache = FileCacheFactory::get('annotation_discovery:' . $file_cache_suffix);
}
/**
* Gets the used doctrine annotation reader.
*
* @return \Doctrine\Common\Annotations\Reader
* The annotation reader.
*/
protected function getAnnotationReader() {
if (!isset($this->annotationReader)) {
$this->annotationReader = new SimpleAnnotationReader();
// Add the namespaces from the main plugin annotation, like @EntityType.
$namespace = substr($this->pluginDefinitionAnnotationName, 0, strrpos($this->pluginDefinitionAnnotationName, '\\'));
$this->annotationReader
->addNamespace($namespace);
// Register additional namespaces to be scanned for annotations.
foreach ($this->annotationNamespaces as $namespace) {
$this->annotationReader
->addNamespace($namespace);
}
}
return $this->annotationReader;
}
/**
* {@inheritdoc}
*/
public function getDefinitions() {
$definitions = [];
$reader = $this->getAnnotationReader();
// Clear the annotation loaders of any previous annotation classes.
AnnotationRegistry::reset();
// Register the namespaces of classes that can be used for annotations.
AnnotationRegistry::registerLoader('class_exists');
// Search for classes within all PSR-4 namespace locations.
foreach ($this->getPluginNamespaces() as $namespace => $dirs) {
foreach ($dirs as $dir) {
if (file_exists($dir)) {
$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($dir, \RecursiveDirectoryIterator::SKIP_DOTS));
foreach ($iterator as $fileinfo) {
if ($fileinfo->getExtension() == 'php') {
if ($cached = $this->fileCache
->get($fileinfo->getPathName())) {
if (isset($cached['id'])) {
// Explicitly unserialize this to create a new object instance.
$definitions[$cached['id']] = unserialize($cached['content']);
}
continue;
}
$sub_path = $iterator->getSubIterator()
->getSubPath();
$sub_path = $sub_path ? str_replace(DIRECTORY_SEPARATOR, '\\', $sub_path) . '\\' : '';
$class = $namespace . '\\' . $sub_path . $fileinfo->getBasename('.php');
// The filename is already known, so there is no need to find the
// file. However, StaticReflectionParser needs a finder, so use a
// mock version.
$finder = MockFileFinder::create($fileinfo->getPathName());
$parser = new StaticReflectionParser($class, $finder, TRUE);
/** @var \Drupal\Component\Annotation\AnnotationInterface $annotation */
if ($annotation = $reader->getClassAnnotation($parser->getReflectionClass(), $this->pluginDefinitionAnnotationName)) {
$this->prepareAnnotationDefinition($annotation, $class);
$id = $annotation->getId();
$content = $annotation->get();
$definitions[$id] = $content;
// Explicitly serialize this to create a new object instance.
$this->fileCache
->set($fileinfo->getPathName(), [
'id' => $id,
'content' => serialize($content),
]);
}
else {
// Store a NULL object, so the file is not parsed again.
$this->fileCache
->set($fileinfo->getPathName(), [
NULL,
]);
}
}
}
}
}
}
// Don't let annotation loaders pile up.
AnnotationRegistry::reset();
return $definitions;
}
/**
* Prepares the annotation definition.
*
* @param \Drupal\Component\Annotation\AnnotationInterface $annotation
* The annotation derived from the plugin.
* @param string $class
* The class used for the plugin.
*/
protected function prepareAnnotationDefinition(AnnotationInterface $annotation, $class) {
$annotation->setClass($class);
}
/**
* Gets an array of PSR-4 namespaces to search for plugin classes.
*
* @return string[]
*/
protected function getPluginNamespaces() {
return $this->pluginNamespaces;
}
}
Classes
Title | Deprecated | Summary |
---|---|---|
AnnotatedClassDiscovery | Defines a discovery mechanism to find annotated plugins in PSR-4 namespaces. |
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