/**
* @param string $domain Domain ID, or false for the current domain
* @param IDatabase|null DB master connectionl used to avoid loops [optional]
* @return bool
*/
private function masterRunningReadOnly($domain, IDatabase $conn = null)
{
$cache = $this->wanCache;
$masterServer = $this->getServerName($this->getWriterIndex());
return (bool) $cache->getWithSetCallback($cache->makeGlobalKey(__CLASS__, 'server-read-only', $masterServer), self::TTL_CACHE_READONLY, function () use($domain, $conn) {
$old = $this->trxProfiler->setSilenced(true);
try {
$dbw = $conn ?: $this->getConnection(self::DB_MASTER, [], $domain);
$readOnly = (int) $dbw->serverIsReadOnly();
if (!$conn) {
$this->reuseConnection($dbw);
}
} catch (DBError $e) {
$readOnly = 0;
}
$this->trxProfiler->setSilenced($old);
return $readOnly;
}, ['pcTTL' => $cache::TTL_PROC_LONG, 'busyValue' => 0]);
}
public final function rollback($fname = __METHOD__, $flush = '')
{
if ($flush === self::FLUSHING_INTERNAL || $flush === self::FLUSHING_ALL_PEERS) {
if (!$this->mTrxLevel) {
return;
// nothing to do
}
} else {
if (!$this->mTrxLevel) {
$this->queryLogger->error("{$fname}: No transaction to rollback, something got out of sync.");
return;
// nothing to do
} elseif ($this->getFlag(self::DBO_TRX)) {
throw new DBUnexpectedError($this, "{$fname}: Expected mass rollback of all peer databases (DBO_TRX set).");
}
}
// Avoid fatals if close() was called
$this->assertOpen();
$this->doRollback($fname);
$this->mTrxAtomicLevels = [];
if ($this->mTrxDoneWrites) {
$this->trxProfiler->transactionWritingOut($this->mServer, $this->mDBname, $this->mTrxShortId);
}
$this->mTrxIdleCallbacks = [];
// clear
$this->mTrxPreCommitCallbacks = [];
// clear
$this->runOnTransactionIdleCallbacks(self::TRIGGER_ROLLBACK);
$this->runTransactionListenerCallbacks(self::TRIGGER_ROLLBACK);
}
/**
* Mark a DB as no longer in a transaction
*
* This will check if locks are possibly held for longer than
* needed and log any affected transactions to a special DB log.
* Note that there can be multiple connections to a single DB.
*
* @param string $server DB server
* @param string $db DB name
* @param string $id Resource ID string of connection
*/
public function transactionWritingOut($server, $db, $id = '')
{
$this->trxProfiler->transactionWritingOut($server, $db, $id);
}