Add annotation reader cache

src/Config/Parser/AnnotationParser.php

@@ -6,18 +6,28 @@
 
 use Doctrine\Common\Annotations\AnnotationReader;
 use Doctrine\Common\Annotations\AnnotationRegistry;
+use Doctrine\Common\Annotations\CachedReader;
+use Doctrine\Common\Annotations\Reader;
+use Doctrine\Common\Cache\ApcuCache;
+use Doctrine\Common\Cache\PhpFileCache;
 use Overblog\GraphQLBundle\Config\Parser\MetadataParser\MetadataParser;
 use ReflectionClass;
 use ReflectionMethod;
 use ReflectionProperty;
 use Reflector;
 use RuntimeException;
+use function apcu_enabled;
+use function class_exists;
+use function extension_loaded;
+use function implode;
+use function md5;
+use function sys_get_temp_dir;
 
 class AnnotationParser extends MetadataParser
 {
     public const METADATA_FORMAT = '@%s';
 
-    protected static ?AnnotationReader $annotationReader = null;
+    protected static Reader $annotationReader;
 
     protected static function getMetadatas(Reflector $reflector): array
     {
@@ -32,18 +42,27 @@ protected static function getMetadatas(Reflector $reflector): array
         return [];
     }
 
-    protected static function getAnnotationReader(): AnnotationReader
+    protected static function getAnnotationReader(): Reader
     {
-        if (null === self::$annotationReader) {
-            if (!class_exists(AnnotationReader::class) ||
-                !class_exists(AnnotationRegistry::class)) {
+        if (!isset(self::$annotationReader)) {
+            if (!class_exists(AnnotationReader::class) || !class_exists(AnnotationRegistry::class)) {
                 // @codeCoverageIgnoreStart
-                throw new RuntimeException('In order to use graphql annotation, you need to require doctrine annotations');
+                throw new RuntimeException("In order to use annotations, you need to install 'doctrine/annotations' first. See: 'https://www.doctrine-project.org/projects/annotations.html'");
                 // @codeCoverageIgnoreEnd
             }
 
             AnnotationRegistry::registerLoader('class_exists');
-            self::$annotationReader = new AnnotationReader();
+            $cacheKey = md5(__DIR__);
+            // @codeCoverageIgnoreStart
+            if (extension_loaded('apcu') && apcu_enabled()) {
+                $annotationCache = new ApcuCache();
+            } else {
+                $annotationCache = new PhpFileCache(implode(DIRECTORY_SEPARATOR, [sys_get_temp_dir(), $cacheKey]));
+            }
+            // @codeCoverageIgnoreEnd
+            $annotationCache->setNamespace($cacheKey);
+
+            self::$annotationReader = new CachedReader(new AnnotationReader(), $annotationCache, true);
         }
 
         return self::$annotationReader;