const DOMAIN_ANY = '';
/** @var int DB handle should have DBO_TRX disabled and the caller will leave it as such */
+ const CONN_TRX_AUTOCOMMIT = 1;
+ /** @var int Alias for CONN_TRX_AUTOCOMMIT for b/c; deprecated since 1.31 */
const CONN_TRX_AUTO = 1;
/**
/**
* Get a connection handle by server index
*
- * The CONN_TRX_AUTO flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
+ * The CONN_TRX_AUTOCOMMIT flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
* (e.g. sqlite) in order to avoid deadlocks. ILoadBalancer::getServerAttributes()
* can be used to check such flags beforehand.
*
- * If the caller uses $domain or sets CONN_TRX_AUTO in $flags, then it must also
+ * If the caller uses $domain or sets CONN_TRX_AUTOCOMMIT in $flags, then it must also
* call ILoadBalancer::reuseConnection() on the handle when finished using it.
* In all other cases, this is not necessary, though not harmful either.
*
- * @param int $i Server index or DB_MASTER/DB_REPLICA
+ * @param int $i Server index (overrides $groups) or DB_MASTER/DB_REPLICA
* @param array|string|bool $groups Query group(s), or false for the generic reader
* @param string|bool $domain Domain ID, or false for the current domain
* @param int $flags Bitfield of CONN_* class constants
*
* The handle's methods simply wrap those of a Database handle
*
- * The CONN_TRX_AUTO flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
+ * The CONN_TRX_AUTOCOMMIT flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
* (e.g. sqlite) in order to avoid deadlocks. ILoadBalancer::getServerAttributes()
* can be used to check such flags beforehand.
*
* @param int $i Server index or DB_MASTER/DB_REPLICA
* @param array|string|bool $groups Query group(s), or false for the generic reader
* @param string|bool $domain Domain ID, or false for the current domain
- * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTO)
+ * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTOCOMMIT)
* @return DBConnRef
*/
public function getConnectionRef( $i, $groups = [], $domain = false, $flags = 0 );
*
* The handle's methods simply wrap those of a Database handle
*
- * The CONN_TRX_AUTO flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
+ * The CONN_TRX_AUTOCOMMIT flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
* (e.g. sqlite) in order to avoid deadlocks. ILoadBalancer::getServerAttributes()
* can be used to check such flags beforehand.
*
* @param int $i Server index or DB_MASTER/DB_REPLICA
* @param array|string|bool $groups Query group(s), or false for the generic reader
* @param string|bool $domain Domain ID, or false for the current domain
- * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTO)
+ * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTOCOMMIT)
* @return DBConnRef
*/
public function getLazyConnectionRef( $i, $groups = [], $domain = false, $flags = 0 );
*
* The handle's methods simply wrap those of a Database handle
*
- * The CONN_TRX_AUTO flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
+ * The CONN_TRX_AUTOCOMMIT flag is ignored for databases with ATTR_DB_LEVEL_LOCKING
* (e.g. sqlite) in order to avoid deadlocks. ILoadBalancer::getServerAttributes()
* can be used to check such flags beforehand.
*
* @param int $db Server index or DB_MASTER/DB_REPLICA
* @param array|string|bool $groups Query group(s), or false for the generic reader
* @param string|bool $domain Domain ID, or false for the current domain
- * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTO)
+ * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTOCOMMIT)
* @return MaintainableDBConnRef
*/
public function getMaintenanceConnectionRef( $db, $groups = [], $domain = false, $flags = 0 );
* The index must be an actual index into the array. If a connection to the server is
* already open and not considered an "in use" foreign connection, this simply returns it.
*
- * Avoid using CONN_TRX_AUTO for databases with ATTR_DB_LEVEL_LOCKING (e.g. sqlite) in
+ * Avoid using CONN_TRX_AUTOCOMMIT for databases with ATTR_DB_LEVEL_LOCKING (e.g. sqlite) in
* order to avoid deadlocks. ILoadBalancer::getServerAttributes() can be used to check
* such flags beforehand.
*
- * If the caller uses $domain or sets CONN_TRX_AUTO in $flags, then it must also
+ * If the caller uses $domain or sets CONN_TRX_AUTOCOMMIT in $flags, then it must also
* call ILoadBalancer::reuseConnection() on the handle when finished using it.
* In all other cases, this is not necessary, though not harmful either.
*
*
* @param int $i Server index (does not support DB_MASTER/DB_REPLICA)
* @param string|bool $domain Domain ID, or false for the current domain
- * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTO)
+ * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTOCOMMIT)
* @return Database|bool Returns false on errors
* @throws DBAccessError
*/
if ( !empty( $connsByServer[$i] ) ) {
/** @var IDatabase[] $serverConns */
$serverConns = $connsByServer[$i];
-
return reset( $serverConns );
}
}
$domain = false; // local connection requested
}
- if ( ( $flags & self::CONN_TRX_AUTO ) === self::CONN_TRX_AUTO ) {
+ if ( ( $flags & self::CONN_TRX_AUTOCOMMIT ) === self::CONN_TRX_AUTOCOMMIT ) {
// Assuming all servers are of the same type (or similar), which is overwhelmingly
// the case, use the master server information to get the attributes. The information
// for $i cannot be used since it might be DB_REPLICA, which might require connection
// rows (e.g. FOR UPDATE) or (b) make small commits during a larger transactions
// to reduce lock contention. None of these apply for sqlite and using separate
// connections just causes self-deadlocks.
- $flags &= ~self::CONN_TRX_AUTO;
- $this->connLogger->info( __METHOD__ . ': ignoring CONN_TRX_AUTO to avoid deadlocks.' );
+ $flags &= ~self::CONN_TRX_AUTOCOMMIT;
+ $this->connLogger->info( __METHOD__ .
+ ': ignoring CONN_TRX_AUTOCOMMIT to avoid deadlocks.' );
}
}
if ( $i == self::DB_MASTER ) {
$i = $this->getWriterIndex();
- } else {
+ } elseif ( $i == self::DB_REPLICA ) {
# Try to find an available server in any the query groups (in order)
foreach ( $groups as $group ) {
$groupIndex = $this->getReaderIndex( $group, $domain );
// main set of DB connections but rather its own pool since:
// a) those are usually set to implicitly use transaction rounds via DBO_TRX
// b) those must support the use of explicit transaction rounds via beginMasterChanges()
- $autoCommit = ( ( $flags & self::CONN_TRX_AUTO ) == self::CONN_TRX_AUTO );
+ $autoCommit = ( ( $flags & self::CONN_TRX_AUTOCOMMIT ) == self::CONN_TRX_AUTOCOMMIT );
if ( $domain !== false ) {
// Connection is to a foreign domain
$domainInstance = DatabaseDomain::newFromId( $domain );
$dbName = $domainInstance->getDatabase();
$prefix = $domainInstance->getTablePrefix();
- $autoCommit = ( ( $flags & self::CONN_TRX_AUTO ) == self::CONN_TRX_AUTO );
+ $autoCommit = ( ( $flags & self::CONN_TRX_AUTOCOMMIT ) == self::CONN_TRX_AUTOCOMMIT );
if ( $autoCommit ) {
$connFreeKey = self::KEY_FOREIGN_FREE_NOROUND;
}
public function closeConnection( IDatabase $conn ) {
- $serverIndex = $conn->getLBInfo( 'serverIndex' ); // second index level of mConns
+ $serverIndex = $conn->getLBInfo( 'serverIndex' );
foreach ( $this->conns as $type => $connsByServer ) {
if ( !isset( $connsByServer[$serverIndex] ) ) {
continue;
dépôts / lhc / web / wiklou.git / commitdiff