volttron troubleshoot rpc call get_point - volttron

Question

Any chance for a tip on how to troubleshoot a simple get_point rpc call to a BACnet device? Something I am doing on the rpc call throws this error: 'DriverAgent\' object has no attribute \'interface\'
This is my device:
vctl config get platform.driver registry_configs/33333.csv
That prints:
[
{
"Reference Point Name": "signal_payload",
"Volttron Point Name": "signal_payload",
"Units": "percent",
"Unit Details": "(default 0.0)",
"BACnet Object Type": "analogValue",
"Property": "presentValue",
"Writable": "FALSE",
"Index": "0",
"Write Priority": "",
"Notes": "Open ADR Payload Signal"
},
{
"Reference Point Name": "int_signal_duration",
"Volttron Point Name": "int_signal_duration",
"Units": "percent",
"Unit Details": "(default 0.0)",
"BACnet Object Type": "analogValue",
"Property": "presentValue",
"Writable": "FALSE",
"Index": "1",
"Write Priority": "",
"Notes": "Integer Signal Duration"
}
]
device address:
vctl config get platform.driver devices/slipstream_internal/slipstream_hq/33333
this will print:
{
"driver_config": {
"device_address": "10.200.200.224",
"device_id": 33333
},
"driver_type": "bacnet",
"registry_config": "config://registry_configs/33333.csv"
}
I think I have something wrong in my agent code in the dr_level = self.vip.rpc.call as shown in the snip below as the code errors out right after the ACTUATOR AGENT SCHEDULE SUCCESS:
dr_status = self.vip.rpc.call(
'platform.actuator', 'request_new_schedule', self.agent_id, 'my_test', 'HIGH', schedule_bac0_request).get(
timeout=4)
_log.info(f'*** [Setter Agent INFO] *** - ACTUATOR AGENT SCHEDULE SUCCESS')
dr_level = self.vip.rpc.call('platform.actuator','get_point', dr_topic, point="signal_payload").get(timeout=15)
the dr_topic is slipstream_internal/slipstream_hq/33333
Any ideas to try greatly appreciated...
Full traceback:
2021-06-15 14:36:27,597 (actuatoragent-1.0 403031) __main__ DEBUG: handle_get: slipstream_internal/slipstream_hq/33333
2021-06-15 14:36:27,598 (master_driveragent-4.0 403069) volttron.platform.vip.agent.subsystems.rpc ERROR: unhandled exception in JSON-RPC method 'get_point':
Traceback (most recent call last):
File "/var/lib/volttron/volttron/platform/vip/agent/subsystems/rpc.py", line 158, in method
return method(*args, **kwargs)
File "/home/volttron/.volttron/agents/55fbfb56-beac-4e6d-a201-1ab17b11d42b/master_driveragent-4.0/master_driver/agent.py", line 448, in get_point
return self.instances[path].get_point(point_name, **kwargs)
File "/home/volttron/.volttron/agents/55fbfb56-beac-4e6d-a201-1ab17b11d42b/master_driveragent-4.0/master_driver/driver.py", line 341, in get_point
return self.interface.get_point(point_name, **kwargs)
AttributeError: 'DriverAgent' object has no attribute 'interface'
2021-06-15 14:36:27,599 (actuatoragent-1.0 403031) volttron.platform.vip.agent.subsystems.rpc ERROR: unhandled exception in JSON-RPC method 'get_point':
Traceback (most recent call last):
File "/var/lib/volttron/volttron/platform/vip/agent/subsystems/rpc.py", line 158, in method
return method(*args, **kwargs)
File "/home/volttron/.volttron/agents/8f4ee1c0-74cb-4070-8a8c-57bf9bea8a71/actuatoragent-1.0/actuator/agent.py", line 897, in get_point
return self.vip.rpc.call(self.driver_vip_identity, 'get_point', path,
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 335, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 323, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 303, in gevent._gevent_cevent.AsyncResult._raise_exception
File "/var/lib/volttron/env/lib/python3.8/site-packages/gevent/_compat.py", line 66, in reraise
raise value
volttron.platform.jsonrpc.RemoteError: builtins.AttributeError("'DriverAgent' object has no attribute 'interface'")
2021-06-15 14:36:27,600 (setteroccvavagent-0.1 471606) volttron.platform.vip.agent.core ERROR: unhandled exception in periodic callback
Traceback (most recent call last):
File "/var/lib/volttron/volttron/platform/vip/agent/core.py", line 117, in _loop
method(*self.args, **self.kwargs)
File "/home/volttron/.volttron/agents/9c13ec66-7d7a-4f3d-a607-409a82e012ed/setteroccvavagent-0.1/setteroccvav/agent.py", line 252, in raise_setpoints_up
dr_level = self.vip.rpc.call('platform.actuator','get_point', dr_topic, point="signal_payload").get(timeout=4)
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 335, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 323, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 303, in gevent._gevent_cevent.AsyncResult._raise_exception
File "/var/lib/volttron/env/lib/python3.8/site-packages/gevent/_compat.py", line 66, in reraise
raise value
volttron.platform.jsonrpc.RemoteError: volttron.platform.jsonrpc.RemoteError('builtins.AttributeError("\'DriverAgent\' object has no attribute \'interface\'")')

Answer 1

driver = DriverAgent(self, contents, slot, self.driver_scrape_interval, topic,
group, self.group_offset_interval,
self.publish_depth_first_all,
self.publish_breadth_first_all,
self.publish_depth_first,
self.publish_breadth_first)
gevent.spawn(driver.core.run)
self.instances[topic] = driver
When the Platform Driver's configure method is called (which happens during a callback from the config store), the Platform Driver creates a driver instance with an interface class per the config that was passed. If the config that was passed is somehow incorrect or improperly passed, then the Platform Driver will be unable to actually instantiate the driver, and therefore it will not be added to the "self.instances" dictionary (above). When you make a call to the Platform Driver, you include a topic. That path MUST match the key that maps to the driver instance value in the "self.instances" dictionary.
As such, I have a couple of spots to suggest investigating. 1) Re-load the configs into the config store and watch the VOLTTRON log file as you do so. If you do not see a dictionary representation of the config file in the VOLTTRON log (while running in verbose logging mode) then you have likely given it an improperly formatted config. 2) Double check the topic you're using in your RPC calls. If the topic is not in the "self.instances" dictionary, it will throw an error as it's asking for a key that does not exist.
The configs you have posted above appear to me to be correct, so the topic in the RPC call or the commands used to store the configs appear to me to be the most likely culprits.

Answer 2

Actually what seemed to fix this is I restarted the actuator agent, bacnet proxy, and masteragent all at the same time. Was it maybe the master agent that needed a restart?
UPDATE
IF YOU HAD TO CHANGE SOMETHING IN THE CONFIG STORE FOR A DEVICE, for example make a BACnet point writeable instead of read ONLY; and something got fat fingered incorrectly this will ALSO CAUSE THE SAME ERROR! And also hard to troubleshoot.
For example on a live system if you had to modify something like this through vctl:
vctl config edit platform.driver registry_configs/1100.csv
And you create a syntax error with a fat finger this will also throw the same error!!!!!