def transactionFunc(backend, data, is_read):
key = data["sessionId"]
session_tracker = backend.sessions[key]
session = session_tracker.session
metadata, timeout = to_meta_and_timeout(data)
@neo4j.unit_of_work(metadata=metadata, timeout=timeout)
def func(tx):
txkey = backend.next_key()
backend.transactions[txkey] = tx
session_tracker.state = ''
backend.send_response("RetryableTry", {"id": txkey})
cont = True
while cont:
cont = backend.process_request()
if session_tracker.state == '+':
cont = False
elif session_tracker.state == '-':
if session_tracker.error_id:
raise backend.errors[session_tracker.error_id]
else:
raise Exception("Client said no")
if is_read:
session.read_transaction(func)
else:
session.write_transaction(func)
backend.send_response("RetryableDone", {})
def SessionBeginTransaction(backend, data):
key = data["sessionId"]
session = backend.sessions[key].session
metadata, timeout = to_meta_and_timeout(data)
tx = session.begin_transaction(metadata=metadata, timeout=timeout)
key = backend.next_key()
backend.transactions[key] = tx
backend.send_response("Transaction", {"id": key})