perf(caldav): Cache calendars in CustomPropertiesBackend

We already do that for files, we are now also doing for calendars.
With relatively small amount of calendars, I managed to reduce the
number of DB requests by 35% and from 23 DB requests touching the
oc_properties table to only 3.

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

apps/dav/lib/CalDAV/Calendar.php

@@ -36,7 +36,7 @@ class Calendar extends \Sabre\CalDAV\Calendar implements IRestorable, IShareable
 
 	public function __construct(
 		BackendInterface $caldavBackend,
-		$calendarInfo,
+		array $calendarInfo,
 		IL10N $l10n,
 		private IConfig $config,
 		private LoggerInterface $logger,
@@ -60,6 +60,10 @@ class Calendar extends \Sabre\CalDAV\Calendar implements IRestorable, IShareable
 		$this->l10n = $l10n;
 	}
 
+	public function getUri(): string {
+		return $this->calendarInfo['uri'];
+	}
+
 	/**
 	 * {@inheritdoc}
 	 * @throws Forbidden

apps/dav/lib/CalDAV/CalendarProvider.php

@@ -72,7 +72,7 @@ class CalendarProvider implements ICalendarProvider {
 			$calendars[$user][] = 'calendars/' . $user . '/' . $uri['uri'];
 		}
 
-		$properties = $this->propertyMapper->findPropertiesByPaths($calendars);
+		$properties = $this->propertyMapper->findPropertiesByPathsAndUsers($calendars);
 
 		$list = [];
 		foreach ($properties as $property) {

apps/dav/lib/Connector/Sabre/ServerFactory.php

@@ -14,6 +14,7 @@ use OCA\DAV\CalDAV\DefaultCalendarValidator;
 use OCA\DAV\CalDAV\Proxy\ProxyMapper;
 use OCA\DAV\DAV\CustomPropertiesBackend;
 use OCA\DAV\DAV\ViewOnlyPlugin;
+use OCA\DAV\Db\PropertyMapper;
 use OCA\DAV\Files\BrowserErrorPagePlugin;
 use OCA\DAV\Files\Sharing\RootCollection;
 use OCA\DAV\Upload\CleanupService;
@@ -226,6 +227,7 @@ class ServerFactory {
 							$tree,
 							$this->databaseConnection,
 							$this->userSession->getUser(),
+							\OCP\Server::get(PropertyMapper::class),
 							\OCP\Server::get(DefaultCalendarValidator::class),
 						)
 					)

apps/dav/lib/DAV/CustomPropertiesBackend.php

@@ -9,13 +9,20 @@
 namespace OCA\DAV\DAV;
 
 use Exception;
+use OCA\DAV\CalDAV\CalDavBackend;
 use OCA\DAV\CalDAV\Calendar;
+use OCA\DAV\CalDAV\CalendarHome;
 use OCA\DAV\CalDAV\CalendarObject;
 use OCA\DAV\CalDAV\DefaultCalendarValidator;
+use OCA\DAV\CalDAV\Integration\ExternalCalendar;
+use OCA\DAV\CalDAV\Outbox;
+use OCA\DAV\CalDAV\Trashbin\TrashbinHome;
 use OCA\DAV\Connector\Sabre\Directory;
+use OCA\DAV\Db\PropertyMapper;
 use OCP\DB\QueryBuilder\IQueryBuilder;
 use OCP\IDBConnection;
 use OCP\IUser;
+use Sabre\CalDAV\Schedule\Inbox;
 use Sabre\DAV\Exception as DavException;
 use Sabre\DAV\PropertyStorage\Backend\BackendInterface;
 use Sabre\DAV\PropFind;
@@ -98,10 +105,9 @@ class CustomPropertiesBackend implements BackendInterface {
 
 	/**
 	 * Properties cache
-	 *
-	 * @var array
 	 */
-	private $userCache = [];
+	private array $userCache = [];
+	private array $publishedCache = [];
 	private XmlService $xmlService;
 
 	/**
@@ -114,6 +120,7 @@ class CustomPropertiesBackend implements BackendInterface {
 		private Tree $tree,
 		private IDBConnection $connection,
 		private IUser $user,
+		private PropertyMapper $propertyMapper,
 		private DefaultCalendarValidator $defaultCalendarValidator,
 	) {
 		$this->xmlService = new XmlService();
@@ -197,6 +204,13 @@ class CustomPropertiesBackend implements BackendInterface {
 			$this->cacheDirectory($path, $node);
 		}
 
+		if ($node instanceof CalendarHome && $propFind->getDepth() !== 0) {
+			$backend = $node->getCalDAVBackend();
+			if ($backend instanceof CalDavBackend) {
+				$this->cacheCalendars($node, $requestedProps);
+			}
+		}
+
 		if ($node instanceof CalendarObject) {
 			// No custom properties supported on individual events
 			return;
@@ -316,6 +330,10 @@ class CustomPropertiesBackend implements BackendInterface {
 			return [];
 		}
 
+		if (isset($this->publishedCache[$path])) {
+			return $this->publishedCache[$path];
+		}
+
 		$qb = $this->connection->getQueryBuilder();
 		$qb->select('*')
 			->from(self::TABLE_NAME)
@@ -326,6 +344,7 @@ class CustomPropertiesBackend implements BackendInterface {
 			$props[$row['propertyname']] = $this->decodeValueFromDatabase($row['propertyvalue'], $row['valuetype']);
 		}
 		$result->closeCursor();
+		$this->publishedCache[$path] = $props;
 		return $props;
 	}
 
@@ -364,6 +383,58 @@ class CustomPropertiesBackend implements BackendInterface {
 		$this->userCache = array_merge($this->userCache, $propsByPath);
 	}
 
+	private function cacheCalendars(CalendarHome $node): void {
+		$calendars = $node->getChildren();
+
+		$users = [];
+		foreach ($calendars as $calendar) {
+			if ($calendar instanceof Calendar) {
+				$user = str_replace('principals/users/', '', $calendar->getPrincipalURI());
+				if (!isset($users[$user])) {
+					$users[$user] = ['calendars/' . $user];
+				}
+				$users[$user][] = 'calendars/' . $user . '/' . $calendar->getUri();
+			} elseif ($calendar instanceof Inbox || $calendar instanceof Outbox || $calendar instanceof TrashbinHome || $calendar instanceof ExternalCalendar) {
+				if ($calendar->getOwner()) {
+					$user = str_replace('principals/users/', '', $calendar->getOwner());
+					if (!isset($users[$user])) {
+						$users[$user] = ['calendars/' . $user];
+					}
+					$users[$user][] = 'calendars/' . $user . '/' . $calendar->getName();
+				}
+			}
+		}
+
+		// user properties
+		$properties = $this->propertyMapper->findPropertiesByPathsAndUsers($users);
+
+		$propsByPath = [];
+		foreach ($users as $paths) {
+			foreach ($paths as $path) {
+				$propsByPath[$path] = [];
+			}
+		}
+
+		foreach ($properties as $property) {
+			$propsByPath[$property->getPropertypath()][$property->getPropertyname()] = $this->decodeValueFromDatabase($property->getPropertyvalue(), $property->getValuetype());
+		}
+		$this->userCache = array_merge($this->userCache, $propsByPath);
+
+		// published properties
+		$paths = [];
+		foreach ($users as $nestedPaths) {
+			$paths = array_merge($paths, $nestedPaths);
+		}
+		$paths = array_unique($paths);
+
+		$propsByPath = array_fill_keys(array_values($paths), []);
+		$properties = $this->propertyMapper->findPropertiesByPaths($paths);
+		foreach ($properties as $property) {
+			$propsByPath[$property->getPropertypath()][$property->getPropertyname()] = $this->decodeValueFromDatabase($property->getPropertyvalue(), $property->getValuetype());
+		}
+		$this->publishedCache = array_merge($this->publishedCache, $propsByPath);
+	}
+
 	/**
 	 * Returns a list of properties for the given path and current user
 	 *

apps/dav/lib/Db/Property.php

@@ -16,6 +16,7 @@ use OCP\AppFramework\Db\Entity;
  * @method string getPropertypath()
  * @method string getPropertyname()
  * @method string getPropertyvalue()
+ * @method int getValuetype()
  */
 class Property extends Entity {
 

apps/dav/lib/Db/PropertyMapper.php

@@ -44,17 +44,34 @@ class PropertyMapper extends QBMapper {
 	 * @return Property[]
 	 * @throws \OCP\DB\Exception
 	 */
-	public function findPropertiesByPaths(array $calendars): array {
+	public function findPropertiesByPathsAndUsers(array $calendars): array {
 		$selectQb = $this->db->getQueryBuilder();
 		$selectQb->select('*')
 			->from(self::TABLE_NAME);
 
 		foreach ($calendars as $user => $paths) {
-			$selectQb->andWhere(
-				$selectQb->expr()->eq('userid', $selectQb->createNamedParameter($user)),
-				$selectQb->expr()->in('propertypath', $selectQb->createNamedParameter($paths, IQueryBuilder::PARAM_STR_ARRAY)),
+			$selectQb->orWhere(
+				$selectQb->expr()->andX(
+					$selectQb->expr()->eq('userid', $selectQb->createNamedParameter($user)),
+					$selectQb->expr()->in('propertypath', $selectQb->createNamedParameter($paths, IQueryBuilder::PARAM_STR_ARRAY)),
+				)
 			);
 		}
+
+		return $this->findEntities($selectQb);
+	}
+
+	/**
+	 * @param string[] $calendars
+	 * @return Property[]
+	 * @throws \OCP\DB\Exception
+	 */
+	public function findPropertiesByPaths(array $calendars): array {
+		$selectQb = $this->db->getQueryBuilder();
+		$selectQb->select('*')
+			->from(self::TABLE_NAME)
+			->where($selectQb->expr()->in('propertypath', $selectQb->createNamedParameter($calendars, IQueryBuilder::PARAM_STR_ARRAY)));
+
 		return $this->findEntities($selectQb);
 	}
 }

apps/dav/lib/Server.php

@@ -54,6 +54,7 @@ use OCA\DAV\Connector\Sabre\ZipFolderPlugin;
 use OCA\DAV\DAV\CustomPropertiesBackend;
 use OCA\DAV\DAV\PublicAuth;
 use OCA\DAV\DAV\ViewOnlyPlugin;
+use OCA\DAV\Db\PropertyMapper;
 use OCA\DAV\Events\SabrePluginAddEvent;
 use OCA\DAV\Events\SabrePluginAuthInitEvent;
 use OCA\DAV\Files\BrowserErrorPagePlugin;
@@ -306,6 +307,7 @@ class Server {
 							$this->server->tree,
 							\OCP\Server::get(IDBConnection::class),
 							\OCP\Server::get(IUserSession::class)->getUser(),
+							\OCP\Server::get(PropertyMapper::class),
 							\OCP\Server::get(DefaultCalendarValidator::class),
 						)
 					)

apps/dav/tests/unit/Connector/Sabre/CustomPropertiesBackendTest.php

@@ -12,6 +12,7 @@ use OCA\DAV\CalDAV\DefaultCalendarValidator;
 use OCA\DAV\Connector\Sabre\Directory;
 use OCA\DAV\Connector\Sabre\File;
 use OCA\DAV\DAV\CustomPropertiesBackend;
+use OCA\DAV\Db\PropertyMapper;
 use OCP\IDBConnection;
 use OCP\IUser;
 use OCP\Server;
@@ -52,6 +53,7 @@ class CustomPropertiesBackendTest extends \Test\TestCase {
 			$this->tree,
 			Server::get(IDBConnection::class),
 			$this->user,
+			Server::get(PropertyMapper::class),
 			$this->defaultCalendarValidator,
 		);
 	}

apps/dav/tests/unit/DAV/CustomPropertiesBackendTest.php

@@ -10,6 +10,7 @@ namespace OCA\DAV\Tests\unit\DAV;
 use OCA\DAV\CalDAV\Calendar;
 use OCA\DAV\CalDAV\DefaultCalendarValidator;
 use OCA\DAV\DAV\CustomPropertiesBackend;
+use OCA\DAV\Db\PropertyMapper;
 use OCP\DB\QueryBuilder\IQueryBuilder;
 use OCP\IDBConnection;
 use OCP\IUser;
@@ -36,6 +37,7 @@ class CustomPropertiesBackendTest extends TestCase {
 	private IUser&MockObject $user;
 	private DefaultCalendarValidator&MockObject $defaultCalendarValidator;
 	private CustomPropertiesBackend $backend;
+	private PropertyMapper $propertyMapper;
 
 	protected function setUp(): void {
 		parent::setUp();
@@ -49,6 +51,7 @@ class CustomPropertiesBackendTest extends TestCase {
 			->with()
 			->willReturn('dummy_user_42');
 		$this->dbConnection = \OCP\Server::get(IDBConnection::class);
+		$this->propertyMapper = \OCP\Server::get(PropertyMapper::class);
 		$this->defaultCalendarValidator = $this->createMock(DefaultCalendarValidator::class);
 
 		$this->backend = new CustomPropertiesBackend(
@@ -56,6 +59,7 @@ class CustomPropertiesBackendTest extends TestCase {
 			$this->tree,
 			$this->dbConnection,
 			$this->user,
+			$this->propertyMapper,
 			$this->defaultCalendarValidator,
 		);
 	}
@@ -129,6 +133,7 @@ class CustomPropertiesBackendTest extends TestCase {
 			$this->tree,
 			$db,
 			$this->user,
+			$this->propertyMapper,
 			$this->defaultCalendarValidator,
 		);