def commit_transaction(self):
"""Commit a multi-statement transaction.
.. versionadded:: 3.7
"""
self._check_ended()
state = self._transaction.state
if state is _TxnState.NONE:
raise InvalidOperation("No transaction started")
elif state in (_TxnState.STARTING, _TxnState.COMMITTED_EMPTY):
# Server transaction was never started, no need to send a command.
self._transaction.state = _TxnState.COMMITTED_EMPTY
return
elif state is _TxnState.ABORTED:
raise InvalidOperation(
"Cannot call commitTransaction after calling abortTransaction")
try:
self._finish_transaction_with_retry("commitTransaction")
except ConnectionFailure as exc:
# We do not know if the commit was successfully applied on the
# server, set the unknown commit error label.
exc._error_labels = ("UnknownTransactionCommitResult",)
reraise_instance(exc, trace=sys.exc_info()[2])
except OperationFailure as exc:
if exc.code not in _RETRYABLE_ERROR_CODES:
# The server reports errorLabels in the case.
raise
# We do not know if the commit was successfully applied on the
# server, set the unknown commit error label.
exc._error_labels = ("UnknownTransactionCommitResult",)
reraise_instance(exc, trace=sys.exc_info()[2])
finally:
self._transaction.state = _TxnState.COMMITTED
def _reraise_with_unknown_commit(exc):
"""Re-raise an exception with the UnknownTransactionCommitResult label."""
exc._add_error_label("UnknownTransactionCommitResult")
reraise_instance(exc, trace=sys.exc_info()[2])
def _reraise_with_unknown_commit(exc):
"""Re-raise an exception with the UnknownTransactionCommitResult label."""
exc._add_error_label("UnknownTransactionCommitResult")
reraise_instance(exc, trace=sys.exc_info()[2])