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Perf/noid/cache if a user has no talk shares #11555

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Perf/noid/cache if a user has no talk shares #11555

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42 changes: 42 additions & 0 deletions lib/Share/RoomShareProvider.php
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,7 @@
use OCP\Files\Folder;
use OCP\Files\IMimeTypeLoader;
use OCP\Files\Node;
use OCP\ICacheFactory;
use OCP\IDBConnection;
use OCP\IL10N;
use OCP\Security\ISecureRandom;
Expand Down Expand Up @@ -83,6 +84,7 @@ public function __construct(
protected ITimeFactory $timeFactory,
protected IL10N $l,
protected IMimeTypeLoader $mimeTypeLoader,
protected ICacheFactory $cacheFactory,
) {
$this->sharesByIdCache = new CappedMemoryCache();
}
Expand Down Expand Up @@ -215,6 +217,9 @@ private function addShareToDB(
$insert->executeStatement();
$id = $insert->getLastInsertId();

$genCache = $this->cacheFactory->createDistributed('talk/shares');
$genCache->set('generationId', $id);

return $id;
}

Expand Down Expand Up @@ -805,6 +810,35 @@ public function getSharesByPath(Node $path): array {
public function getSharedWith($userId, $shareType, $node, $limit, $offset): array {
$allRooms = $this->manager->getRoomTokensForUser($userId);

$cacheKey = null;
$cacheKeySuffix = $node === null && $limit === -1 && $offset === 0 ? sha1(json_encode($allRooms)) : null;
if ($cacheKeySuffix) {
$genCache = $this->cacheFactory->createDistributed('talk/shares');
$generationId = $genCache->get('generationId');
if ($generationId !== null) {
$localCache = $this->cacheFactory->createLocal('talk/shares');
$cacheKey = $generationId . '$' . $cacheKeySuffix;
$cachedData = $localCache->get($cacheKey);
if ($cachedData === 'empty') {
return [];
}
} else {
// To warm up the cache, we query the maximum ID from oc_share
// and store it as generationId in the distributed cache.
$query = $this->dbConnection->getQueryBuilder();
$query->select('id')
->from('share')
->orderBy('id', 'DESC')
->setMaxResults(1);
$result = $query->executeQuery();
$generationId = (int) $result->fetchOne();
$result->closeCursor();

$genCache->set('generationId', $generationId);
$cacheKey = $generationId . '$' . $cacheKeySuffix;
}
}

$query = $this->dbConnection->getQueryBuilder();
$query->select('s.*')
->from('share', 's')
Expand Down Expand Up @@ -842,6 +876,14 @@ public function getSharedWith($userId, $shareType, $node, $limit, $offset): arra
$result->closeCursor();
}

if (empty($shareRows) && $cacheKey) {
if (!isset($localCache)) {
$localCache = $this->cacheFactory->createLocal('talk/shares');
}
$localCache->set($cacheKey, 'empty', 300);
return [];
}

$queryFileCache = $this->dbConnection->getQueryBuilder();
$queryFileCache->select('f.fileid', 'f.path', 'f.permissions AS f_permissions', 'f.storage', 'f.path_hash',
'f.parent AS f_parent', 'f.name', 'f.mimetype', 'f.mimepart', 'f.size', 'f.mtime', 'f.storage_mtime',
Expand Down
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