示例#1
0
 private static function processDownloadInternal($userID, $lastsync, DOMDocument $doc, $syncDownloadQueueID = null, $syncDownloadProcessID = null, $params = [])
 {
     $apiVersion = (int) $doc->documentElement->getAttribute('version');
     if ($lastsync == 1) {
         StatsD::increment("sync.process.download.full");
     }
     // TEMP
     $cacheKeyExtra = (!empty($params['ft']) ? json_encode($params['ft']) : "") . (!empty($params['ftkeys']) ? json_encode($params['ftkeys']) : "");
     try {
         $cached = Zotero_Sync::getCachedDownload($userID, $lastsync, $apiVersion, $cacheKeyExtra);
         if ($cached) {
             $doc->loadXML($cached);
             StatsD::increment("sync.process.download.cache.hit");
             return;
         }
     } catch (Exception $e) {
         $msg = $e->getMessage();
         if (strpos($msg, "Too many connections") !== false) {
             $msg = "'Too many connections' from MySQL";
         } else {
             $msg = "'{$msg}'";
         }
         Z_Core::logError("Warning: {$msg} getting cached download");
         StatsD::increment("sync.process.download.cache.error");
     }
     set_time_limit(1800);
     $profile = false;
     if ($profile) {
         $shardID = Zotero_Shards::getByUserID($userID);
         Zotero_DB::profileStart(0);
     }
     if ($syncDownloadQueueID) {
         self::addDownloadProcess($syncDownloadQueueID, $syncDownloadProcessID);
     }
     $updatedNode = $doc->createElement('updated');
     $doc->documentElement->appendChild($updatedNode);
     $userLibraryID = Zotero_Users::getLibraryIDFromUserID($userID);
     $updatedCreators = array();
     try {
         Zotero_DB::beginTransaction();
         // Blocks until any upload processes are done
         $updateTimes = Zotero_Libraries::getUserLibraryUpdateTimes($userID);
         $timestamp = Zotero_DB::getTransactionTimestampUnix();
         $doc->documentElement->setAttribute('timestamp', $timestamp);
         $doc->documentElement->setAttribute('userID', $userID);
         $doc->documentElement->setAttribute('defaultLibraryID', $userLibraryID);
         $updateKey = Zotero_Users::getUpdateKey($userID);
         $doc->documentElement->setAttribute('updateKey', $updateKey);
         // Get libraries with update times >= $timestamp
         $updatedLibraryIDs = array();
         foreach ($updateTimes as $libraryID => $timestamp) {
             if ($timestamp >= $lastsync) {
                 $updatedLibraryIDs[] = $libraryID;
             }
         }
         // Add new and updated groups
         $joinedGroups = Zotero_Groups::getJoined($userID, (int) $lastsync);
         $updatedIDs = array_unique(array_merge($joinedGroups, Zotero_Groups::getUpdated($userID, (int) $lastsync)));
         if ($updatedIDs) {
             $node = $doc->createElement('groups');
             $showGroups = false;
             foreach ($updatedIDs as $id) {
                 $group = new Zotero_Group();
                 $group->id = $id;
                 $xmlElement = $group->toXML($userID);
                 $newNode = dom_import_simplexml($xmlElement);
                 $newNode = $doc->importNode($newNode, true);
                 $node->appendChild($newNode);
                 $showGroups = true;
             }
             if ($showGroups) {
                 $updatedNode->appendChild($node);
             }
         }
         // If there's updated data in any library or
         // there are any new groups (in which case we need all their data)
         $hasData = $updatedLibraryIDs || $joinedGroups;
         if ($hasData) {
             foreach (Zotero_DataObjects::$classicObjectTypes as $syncObject) {
                 $Name = $syncObject['singular'];
                 // 'Item'
                 $Names = $syncObject['plural'];
                 // 'Items'
                 $name = strtolower($Name);
                 // 'item'
                 $names = strtolower($Names);
                 // 'items'
                 $className = 'Zotero_' . $Names;
                 $updatedIDsByLibraryID = call_user_func(array($className, 'getUpdated'), $userID, $lastsync, $updatedLibraryIDs);
                 if ($updatedIDsByLibraryID) {
                     $node = $doc->createElement($names);
                     foreach ($updatedIDsByLibraryID as $libraryID => $ids) {
                         if ($name == 'creator') {
                             $updatedCreators[$libraryID] = $ids;
                         }
                         foreach ($ids as $id) {
                             if ($name == 'item') {
                                 $obj = call_user_func(array($className, 'get'), $libraryID, $id);
                                 $data = array('updatedCreators' => isset($updatedCreators[$libraryID]) ? $updatedCreators[$libraryID] : array());
                                 $xmlElement = Zotero_Items::convertItemToXML($obj, $data, $apiVersion);
                             } else {
                                 $instanceClass = 'Zotero_' . $Name;
                                 $obj = new $instanceClass();
                                 if (method_exists($instanceClass, '__construct')) {
                                     $obj->__construct();
                                 }
                                 $obj->libraryID = $libraryID;
                                 if ($name == 'setting') {
                                     $obj->name = $id;
                                 } else {
                                     $obj->id = $id;
                                 }
                                 if ($name == 'tag') {
                                     $xmlElement = call_user_func(array($className, "convert{$Name}ToXML"), $obj, true);
                                 } else {
                                     if ($name == 'creator') {
                                         $xmlElement = call_user_func(array($className, "convert{$Name}ToXML"), $obj, $doc);
                                         if ($xmlElement->getAttribute('libraryID') == $userLibraryID) {
                                             $xmlElement->removeAttribute('libraryID');
                                         }
                                         $node->appendChild($xmlElement);
                                     } else {
                                         if ($name == 'relation') {
                                             // Skip new-style related items
                                             if ($obj->predicate == 'dc:relation') {
                                                 continue;
                                             }
                                             $xmlElement = call_user_func(array($className, "convert{$Name}ToXML"), $obj);
                                             if ($apiVersion <= 8) {
                                                 unset($xmlElement['libraryID']);
                                             }
                                         } else {
                                             if ($name == 'setting') {
                                                 $xmlElement = call_user_func(array($className, "convert{$Name}ToXML"), $obj, $doc);
                                                 $node->appendChild($xmlElement);
                                             } else {
                                                 $xmlElement = call_user_func(array($className, "convert{$Name}ToXML"), $obj);
                                             }
                                         }
                                     }
                                 }
                             }
                             if ($xmlElement instanceof SimpleXMLElement) {
                                 if ($xmlElement['libraryID'] == $userLibraryID) {
                                     unset($xmlElement['libraryID']);
                                 }
                                 $newNode = dom_import_simplexml($xmlElement);
                                 $newNode = $doc->importNode($newNode, true);
                                 $node->appendChild($newNode);
                             }
                         }
                     }
                     if ($node->hasChildNodes()) {
                         $updatedNode->appendChild($node);
                     }
                 }
             }
         }
         // Add full-text content if the client supports it
         if (isset($params['ft'])) {
             $libraries = Zotero_Libraries::getUserLibraries($userID);
             $fulltextNode = false;
             foreach ($libraries as $libraryID) {
                 if (!empty($params['ftkeys']) && $params['ftkeys'] === 'all') {
                     $ftlastsync = 1;
                 } else {
                     $ftlastsync = $lastsync;
                 }
                 if (!empty($params['ftkeys'][$libraryID])) {
                     $keys = $params['ftkeys'][$libraryID];
                 } else {
                     $keys = [];
                 }
                 $data = Zotero_FullText::getNewerInLibraryByTime($libraryID, $ftlastsync, $keys);
                 if ($data) {
                     if (!$fulltextNode) {
                         $fulltextNode = $doc->createElement('fulltexts');
                     }
                     foreach ($data as $itemData) {
                         if ($params['ft']) {
                             $empty = $itemData['empty'];
                         } else {
                             $empty = true;
                         }
                         $first = false;
                         $node = Zotero_FullText::itemDataToXML($itemData, $doc, $empty);
                         $fulltextNode->appendChild($node);
                     }
                 }
             }
             if ($fulltextNode) {
                 $updatedNode->appendChild($fulltextNode);
             }
         }
         // Get earliest timestamp
         $earliestModTime = Zotero_Users::getEarliestDataTimestamp($userID);
         $doc->documentElement->setAttribute('earliest', $earliestModTime ? $earliestModTime : 0);
         // Deleted objects
         $deletedKeys = $hasData ? self::getDeletedObjectKeys($userID, $lastsync, true) : false;
         $deletedIDs = self::getDeletedObjectIDs($userID, $lastsync, true);
         if ($deletedKeys || $deletedIDs) {
             $deletedNode = $doc->createElement('deleted');
             // Add deleted data objects
             if ($deletedKeys) {
                 foreach (Zotero_DataObjects::$classicObjectTypes as $syncObject) {
                     $Name = $syncObject['singular'];
                     // 'Item'
                     $Names = $syncObject['plural'];
                     // 'Items'
                     $name = strtolower($Name);
                     // 'item'
                     $names = strtolower($Names);
                     // 'items'
                     if (empty($deletedKeys[$names])) {
                         continue;
                     }
                     $typeNode = $doc->createElement($names);
                     foreach ($deletedKeys[$names] as $row) {
                         $node = $doc->createElement($name);
                         if ($row['libraryID'] != $userLibraryID || $name == 'setting') {
                             $node->setAttribute('libraryID', $row['libraryID']);
                         }
                         $node->setAttribute('key', $row['key']);
                         $typeNode->appendChild($node);
                     }
                     $deletedNode->appendChild($typeNode);
                 }
             }
             // Add deleted groups
             if ($deletedIDs) {
                 $name = "group";
                 $names = "groups";
                 $typeNode = $doc->createElement($names);
                 $ids = $doc->createTextNode(implode(' ', $deletedIDs[$names]));
                 $typeNode->appendChild($ids);
                 $deletedNode->appendChild($typeNode);
             }
             $updatedNode->appendChild($deletedNode);
         }
         Zotero_DB::commit();
     } catch (Exception $e) {
         Zotero_DB::rollback(true);
         if ($syncDownloadQueueID) {
             self::removeDownloadProcess($syncDownloadProcessID);
         }
         throw $e;
     }
     function relaxNGErrorHandler($errno, $errstr)
     {
         Zotero_Sync::$validationError = $errstr;
     }
     set_error_handler('relaxNGErrorHandler');
     $valid = $doc->relaxNGValidate(Z_ENV_MODEL_PATH . 'relax-ng/updated.rng');
     restore_error_handler();
     if (!$valid) {
         if ($syncDownloadQueueID) {
             self::removeDownloadProcess($syncDownloadProcessID);
         }
         throw new Exception(self::$validationError . "\n\nXML:\n\n" . $doc->saveXML());
     }
     // Cache response if response isn't empty
     try {
         if ($doc->documentElement->firstChild->hasChildNodes()) {
             self::cacheDownload($userID, $updateKey, $lastsync, $apiVersion, $doc->saveXML(), $cacheKeyExtra);
         }
     } catch (Exception $e) {
         Z_Core::logError("WARNING: " . $e);
     }
     if ($syncDownloadQueueID) {
         self::removeDownloadProcess($syncDownloadProcessID);
     }
     if ($profile) {
         $shardID = Zotero_Shards::getByUserID($userID);
         Zotero_DB::profileEnd(0);
     }
 }