def rollback(self, tx):
self._assert_open()
self._assert_transaction_open(tx)
self._transaction.set_complete()
log.debug("[#%04X] C: RUN 'ROLLBACK' {}", self.local_port)
log.debug("[#%04X] C: DISCARD_ALL", self.local_port)
try:
self._sync(self._write_request(0x10, "ROLLBACK", {}),
self._write_request(0x2F))
except BrokenWireError as error:
tx.mark_broken()
raise_from(
BrokenTransactionError("Transaction broken by disconnection "
"during rollback"), error)
else:
try:
self._audit(self._transaction)
except Failure as failure:
tx.mark_broken()
raise_from(
BrokenTransactionError("Failed to rollback transaction"),
failure)
else:
return Bookmark()
finally:
if callable(self._on_unbind):
self._on_unbind(self._transaction)
def rollback(self, tx):
self._assert_open()
self._assert_transaction_open(tx)
self._transaction.set_complete()
log.debug("[#%04X] C: ROLLBACK", self.local_port)
response = self._write_request(0x13)
try:
self._sync(response)
except BrokenWireError as error:
tx.mark_broken()
raise_from(
BrokenTransactionError("Transaction broken by disconnection "
"during rollback"), error)
else:
try:
self._audit(self._transaction)
except Failure as failure:
tx.mark_broken()
raise_from(
BrokenTransactionError("Failed to rollback transaction"),
failure)
else:
return Bookmark(response.metadata.get("bookmark"))
finally:
if callable(self._on_unbind):
self._on_unbind(self._transaction)
def rollback(self, tx):
self._assert_transaction_open(tx)
self.__transactions.remove(tx)
try:
r = self._delete(tx.uri())
except ConnectionError as error:
tx.mark_broken()
raise_from(
BrokenTransactionError("Transaction broken by disconnection "
"during rollback"), error)
except HTTPError as error:
tx.mark_broken()
raise_from(
BrokenTransactionError("Transaction broken by HTTP error "
"during rollback"), error)
else:
if r.status != 200:
tx.mark_broken()
raise BrokenTransactionError(
"Transaction broken by HTTP %d status "
"during rollback" % r.status)
rs = HTTPResponse.from_json(r.status, r.data.decode("utf-8"))
self.release()
rs.audit(tx)
return Bookmark()
def header(self):
try:
self.__cx.sync(self)
except BrokenWireError as error:
raise_from(
BrokenTransactionError("Transaction broken by disconnection "
"while buffering query result"), error)
return self._items[0]
def buffer(self):
if self.done():
return
try:
self.__cx.sync(self)
except BrokenWireError as error:
self.__cx.transaction.mark_broken()
raise_from(BrokenTransactionError("Transaction broken by disconnection "
"while buffering"), error)
def buffer(self):
if not self.done():
try:
self.__cx.sync(self)
except BrokenWireError as error:
raise_from(
BrokenTransactionError(
"Transaction broken by disconnection "
"while buffering query result"), error)
def run_in_tx(self, tx, cypher, parameters=None):
r = self._post(tx.uri(), cypher, parameters)
if r.status != 200:
tx.mark_broken()
raise BrokenTransactionError("Transaction broken by HTTP %d status "
"during query execution" % r.status)
rs = HTTPResponse.from_json(r.status, r.data.decode("utf-8"))
self.release()
rs.audit(tx)
return HTTPResult(tx.graph_name, rs.result(), profile=self.profile)
def commit(self, tx):
if tx.broken:
raise ValueError("Transaction is broken")
try:
r = self._post(tx.commit_uri())
except ConnectionError as error:
tx.mark_broken()
raise_from(BrokenTransactionError("Transaction broken by disconnection "
"during commit"), error)
except HTTPError as error:
tx.mark_broken()
raise_from(BrokenTransactionError("Transaction broken by HTTP error "
"during commit"), error)
else:
if r.status != 200:
tx.mark_broken()
raise BrokenTransactionError("Transaction broken by HTTP %d status "
"during commit" % r.status)
rs = HTTPResponse.from_json(r.status, r.data.decode("utf-8"))
self.release()
rs.audit(tx)
return Bookmark()
def commit(self, tx):
self._assert_open()
self._assert_transaction_open(tx)
self._transaction.set_complete()
log.debug("[#%04X] C: RUN 'COMMIT' {}", self.local_port)
log.debug("[#%04X] C: DISCARD_ALL", self.local_port)
try:
self._sync(self._write_request(0x10, "COMMIT", {}),
self._write_request(0x2F))
except BrokenWireError as error:
raise_from(
BrokenTransactionError("Transaction broken by disconnection "
"during commit"), error)
else:
self._audit(self._transaction)
if callable(self._on_unbind):
self._on_unbind(self._transaction)
return Bookmark()
