def _containerize(value):
if isinstance(value, Agent):
return AgentContainer(entries=[value])
elif isinstance(value, Application):
return ApplicationContainer(entries=[value])
elif isinstance(value, Record):
return RecordContainer(entries=[value])
raise Exception("Unknown data type")
def _apply_agent_change(cur, block_num, agent_state_change):
agent_container = AgentContainer()
agent_container.ParseFromString(agent_state_change.value)
for agent in agent_container.entries:
cur.execute(
'UPDATE agent SET end_block_num = %s '
'WHERE end_block_num = %s AND identifier = %s',
[block_num, MAX_BLOCK_NUMBER, agent.identifier])
if agent_state_change.type == StateChange.SET:
cur.execute(
'INSERT INTO agent '
'(start_block_num, end_block_num, '
' identifier, name) '
'VALUES (%s, %s, %s, %s)', [
block_num, MAX_BLOCK_NUMBER, agent.identifier,
agent.name
])
def _get(state, addresses):
entries = state.get(addresses)
if entries:
out = {}
for e in entries:
addr = e.address
if e.data:
if addr.startswith(Addressing.agent_namespace()):
container = AgentContainer()
elif addr.startswith(Addressing.application_namespace()):
container = ApplicationContainer()
elif addr.startswith(Addressing.record_namespace()):
container = RecordContainer()
else:
raise InvalidTransaction("Unknown namespaces.")
else:
container = None
container.ParseFromString(e.data)
out[addr] = container
return out
return {}
def _agent_create(self, state, originator, data):
txn_data = AgentCreatePayload()
txn_data.ParseFromString(data)
agent_addr = Addressing.agent_address(originator)
state_items = self._get(state, [agent_addr])
agents = state_items.get(agent_addr, AgentContainer())
# check that the agent does not exists
agent = self._find_agent(agents, originator)
if agent is not None:
raise InvalidTransaction("Agent already exists.")
# create the new agent
agent = agents.entries.add()
agent.identifier = originator
agent.name = txn_data.name
# send back the updated agents list
self._set(state, [(agent_addr, agents)])
def _decode_agent_container(encoded):
return _pb_loads(AgentContainer(), encoded)