BUGFIX: Keep Neos 8.x compatibility

Classes/Aspects/ContentCacheAspect.php

@@ -1,4 +1,5 @@
 <?php
+
 namespace Flowpack\FullPageCache\Aspects;
 
 use Neos\Cache\Frontend\StringFrontend;
@@ -35,6 +36,24 @@ public function grabUncachedSegment(JoinPointInterface $joinPoint)
         $this->hadUncachedSegments = true;
     }
 
+    /**
+     * This aspect is for Neos 8.x compatibility and can be removed, when Neos 8.x isn't supported anymore.
+     * See: ContentCacheAspect::interceptNodeCacheFlush() for Neos 9.x cache flushing
+     *
+     * @Flow\Before("method(Neos\Neos\Fusion\Cache\ContentCacheFlusher->commit())")
+     * @param JoinPointInterface $joinPoint
+     *
+     * @throws \Neos\Utility\Exception\PropertyNotAccessibleException
+     */
+    public function interceptLegacyNodeCacheFlush(JoinPointInterface $joinPoint)
+    {
+        $object = $joinPoint->getProxy();
+
+        $tags = ObjectAccess::getProperty($object, 'tagsToFlush', true);
+        $tags = array_map([$this, 'sanitizeTag'], array_keys($tags));
+        $this->cacheFrontend->flushByTags($tags);
+    }
+
     /**
      * @Flow\Before("method(Neos\Neos\Fusion\Cache\ContentCacheFlusher->flushTagsImmediately())")
      * @param JoinPointInterface $joinPoint