/**
* @param Iterator $it
* @param integer $oldUserId
* @param callable $callback Receives a single row, returns domain object or null
* @param string $userTupleGetter Method to call on domain object that will return
* a UserTuple instance.
*/
protected function purgeTable(Iterator $it, $oldUserId, $callback, $userTupleGetter)
{
foreach ($it as $batch) {
foreach ($batch as $pkRow) {
$obj = call_user_func($callback, $pkRow);
if (!$obj) {
continue;
}
// This is funny looking because the loaded objects may have come from
// the db with new user ids, or the cache with old user ids.
// We need to tweak this object to look like the old user ids and then
// purge caches so they get the old user id cache keys.
$tuple = call_user_func(array($obj, $userTupleGetter));
if (!$tuple) {
continue;
}
$tuple->id = $oldUserId;
$om = $this->storage->getStorage(get_class($obj));
$om->clear();
$om->merge($obj);
$om->cachePurge($obj);
}
$this->storage->clear();
}
}
/**
* Overwriting default writer because I want to use Flow storage methods so
* the updates also affect cache, not just DB.
*
* @param array[] $updates
*/
public function write(array $updates)
{
/*
* from:
* array(
* 'primaryKey' => array( 'workflow_id' => $id ),
* 'updates' => array( 'workflow_last_update_timestamp' => $timestamp ),
* )
* to:
* array( $id => $timestamp );
*/
$timestamps = array_combine($this->arrayColumn($this->arrayColumn($updates, 'primaryKey'), 'workflow_id'), $this->arrayColumn($this->arrayColumn($updates, 'changes'), 'workflow_last_update_timestamp'));
/** @var UUID[] $uuids */
$uuids = array_map(array('Flow\\Model\\UUID', 'create'), array_keys($timestamps));
/** @var Workflow[] $workflows */
$workflows = $this->storage->getMulti('Workflow', $uuids);
foreach ($workflows as $workflow) {
$timestamp = $timestamps[$workflow->getId()->getBinary()];
$workflow->updateLastModified(UUID::getComparisonUUID($timestamp));
}
$this->storage->multiPut($workflows);
// prevent memory from filling up
$this->storage->clear();
wfWaitForSlaves(false, false, $this->clusterName);
}
