def begin(self, effective_caller_id=None):
try:
request = vtgate_pb2.BeginRequest()
_add_caller_id(request, effective_caller_id)
response = self.stub.Begin(request, self.timeout)
# we're saving effective_caller_id to re-use it for commit and rollback.
self.effective_caller_id = effective_caller_id
self.session = response.session
except (face.AbortionError, vtgate_utils.VitessError) as e:
raise _convert_exception(e)
def begin_request(self, effective_caller_id):
"""Builds a vtgate_pb2.BeginRequest object.
Also remembers the effective caller id for next call to
commit_request or rollback_request.
Args:
effective_caller_id: optional vtgate_client.CallerID.
Returns:
A vtgate_pb2.BeginRequest object.
"""
request = vtgate_pb2.BeginRequest()
self._add_caller_id(request, effective_caller_id)
self._effective_caller_id = effective_caller_id
return request
def begin_request(self, effective_caller_id, single_db):
"""Builds a vtgate_pb2.BeginRequest object.
Also remembers the effective caller id for next call to
commit_request or rollback_request.
Args:
effective_caller_id: optional vtgate_client.CallerID.
single_db: True if single db transaction is needed.
Returns:
A vtgate_pb2.BeginRequest object.
"""
request = vtgate_pb2.BeginRequest()
request.single_db = single_db
self._add_caller_id(request, effective_caller_id)
self._effective_caller_id = effective_caller_id
return request