perf(caldav): Only prefetch published properties

Signed-off-by: Carl Schwan <carl.schwan@nextclound.com>

apps/dav/lib/DAV/CustomPropertiesBackend.php

@@ -383,7 +383,7 @@ class CustomPropertiesBackend implements BackendInterface {
 		$this->userCache = array_merge($this->userCache, $propsByPath);
 	}
 
-	private function cacheCalendars(CalendarHome $node): void {
+	private function cacheCalendars(CalendarHome $node, array $requestedProperties): void {
 		$calendars = $node->getChildren();
 
 		$users = [];
@@ -421,6 +421,10 @@ class CustomPropertiesBackend implements BackendInterface {
 		$this->userCache = array_merge($this->userCache, $propsByPath);
 
 		// published properties
+		$allowedProps = array_intersect(self::PUBLISHED_READ_ONLY_PROPERTIES, $requestedProperties);
+		if (empty($allowedProps)) {
+			return;
+		}
 		$paths = [];
 		foreach ($users as $nestedPaths) {
 			$paths = array_merge($paths, $nestedPaths);
@@ -428,7 +432,7 @@ class CustomPropertiesBackend implements BackendInterface {
 		$paths = array_unique($paths);
 
 		$propsByPath = array_fill_keys(array_values($paths), []);
-		$properties = $this->propertyMapper->findPropertiesByPaths($paths);
+		$properties = $this->propertyMapper->findPropertiesByPaths($paths, $allowedProps);
 		foreach ($properties as $property) {
 			$propsByPath[$property->getPropertypath()][$property->getPropertyname()] = $this->decodeValueFromDatabase($property->getPropertyvalue(), $property->getValuetype());
 		}

apps/dav/lib/Db/PropertyMapper.php

@@ -63,15 +63,20 @@ class PropertyMapper extends QBMapper {
 
 	/**
 	 * @param string[] $calendars
+	 * @param string[] $allowedProperties
 	 * @return Property[]
 	 * @throws \OCP\DB\Exception
 	 */
-	public function findPropertiesByPaths(array $calendars): array {
+	public function findPropertiesByPaths(array $calendars, array $allowedProperties = []): array {
 		$selectQb = $this->db->getQueryBuilder();
 		$selectQb->select('*')
 			->from(self::TABLE_NAME)
 			->where($selectQb->expr()->in('propertypath', $selectQb->createNamedParameter($calendars, IQueryBuilder::PARAM_STR_ARRAY)));
 
+		if ($allowedProperties) {
+			$selectQb->andWhere($selectQb->expr()->in('propertyname', $selectQb->createNamedParameter($allowedProperties, IQueryBuilder::PARAM_STR_ARRAY)));
+		}
+
 		return $this->findEntities($selectQb);
 	}
 }