def record(self,
msg: Message,
force_record_meta=False,
notify_agents=True):
record_meta = False
if msg.action == ACTION_RECEIVED:
key = msg.key
meta = self.meta_table()
if key in meta.db:
del meta.db[key]
elif msg.action == ACTION_WRITE:
self.write(msg.path, msg.key, msg.value)
if msg.dest == DEST_LOCAL:
record_meta = False
elif msg.dest == DEST_NODE:
record_meta = not (msg.dest_node == self.node_id)
elif msg.dest == DEST_PARENT:
record_meta = False
elif msg.dest == DEST_CHILD:
record_meta = False
elif msg.dest == DEST_NEIGHBORS:
record_meta = False
else:
record_meta = True
elif msg.action == ACTION_REQUEST:
record_meta = True
try:
# If we have the requested data, create a response message with that data
key, val = self.latest(msg.path)
msg.key = key
msg.value = val
msg.action = ACTION_RESPONSE
except ValueError:
# Otherwise just store the message to forward it to other nodes
pass
elif msg.action == ACTION_RESPONSE:
if (msg.dest == DEST_NODE and msg.dest_node == self.node_id) or \
(msg.dest == DEST_UPLINK and self.is_uplink):
self.write(msg.path, msg.key, msg.value)
if record_meta or force_record_meta:
self._record_meta(msg)
if notify_agents:
self.notify_agents(msg)
