async def begin(self, read_only: bool = False) -> ITransaction:
"""Starts a new transaction.
"""
# already has txn registered, as long as connection is closed, it
# is safe
txn: typing.Optional[ITransaction] = task_vars.txn.get()
if (txn is not None and txn.manager == self and txn.status
in (Status.ABORTED, Status.COMMITTED, Status.CONFLICT)):
# re-use txn if possible
txn.status = Status.ACTIVE
if (txn._db_conn is not None
and getattr(txn._db_conn, '_in_use', None) is None):
try:
await self._close_txn(txn)
except Exception:
logger.warn('Unable to close spurious connection',
exc_info=True)
else:
txn = Transaction(self, read_only=read_only)
try:
txn.user = get_authenticated_user_id()
except RequestNotFound:
pass
await txn.tpc_begin()
# make sure to explicitly set!
task_vars.txn.set(txn)
return txn
async def begin(self, request=None):
"""Starts a new transaction.
"""
if request is None:
try:
request = get_current_request()
except RequestNotFound:
pass
user = None
txn = None
# already has txn registered, as long as connection is closed, it
# is safe
if (getattr(request, '_txn', None) is not None and request._txn.status
in (Status.ABORTED, Status.COMMITTED, Status.CONFLICT)):
# re-use txn if possible
txn = request._txn
txn.status = Status.ACTIVE
if txn._db_conn is not None:
try:
await self._close_txn(txn)
except Exception:
logger.warn('Unable to close spurious connection',
exc_info=True)
else:
txn = Transaction(self, request=request)
self._last_txn = txn
if request is not None:
# register tm and txn with request
request._tm = self
request._txn = txn
user = get_authenticated_user_id(request)
if user is not None:
txn.user = user
db_conn = self._last_db_conn = await self._storage.open()
txn._query_count_start = _get_conn_query_count(db_conn)
await txn.tpc_begin(db_conn)
return txn
async def begin(self, request=None):
"""Starts a new transaction.
"""
db_conn = self._last_db_conn = await self._storage.open()
if request is None:
try:
request = get_current_request()
except RequestNotFound:
pass
user = None
txn = None
# already has txn registered, as long as connection is closed, it
# is safe
if (getattr(request, '_txn', None) is not None
and request._txn._db_conn is None
and request._txn.status in (Status.ABORTED, Status.COMMITTED)):
# re-use txn if possible
txn = request._txn
txn.status = Status.ACTIVE
# XXX do we want to auto clean up here? Or throw an error?
# This will break tests that are starting multiple transactions
# else:
# await self._close_txn(request._txn)
else:
txn = Transaction(self, request=request)
self._last_txn = txn
if request is not None:
# register tm and txn with request
request._tm = self
request._txn = txn
user = get_authenticated_user_id(request)
if user is not None:
txn.user = user
await txn.tpc_begin(db_conn)
return txn
async def begin(self, request=None):
"""Starts a new transaction.
"""
if request is None:
try:
request = get_current_request()
except RequestNotFound:
pass
user = None
txn = None
# already has txn registered, as long as connection is closed, it
# is safe
if (getattr(request, '_txn', None) is not None and
request._txn.status in (Status.ABORTED, Status.COMMITTED, Status.CONFLICT)):
# re-use txn if possible
txn = request._txn
txn.status = Status.ACTIVE
if (txn._db_conn is not None and
getattr(txn._db_conn, '_in_use', None) is None):
try:
await self._close_txn(txn)
except Exception:
logger.warn('Unable to close spurious connection', exc_info=True)
else:
txn = Transaction(self, request=request)
self._last_txn = txn
if request is not None:
# register tm and txn with request
request._tm = self
request._txn = txn
user = get_authenticated_user_id(request)
if user is not None:
txn.user = user
await txn.tpc_begin()
return txn