failed to convert message to event

[netixx]

I have the following logs on my instance:

2024/10/28 11:26:34.254027 [prometheus_write_output:x] failed to convert message to event: failed to parse json {"af-data":[,{"af-name":"ipv6","number-of-bestpaths":0}]}: invalid character ',' looking for beginning of value

I modified the event.go file to display the actual string that fails to parse like so: https://github.com/netixx/gnmic/blob/feat/event-format-more-info/pkg/formatters/event.go#L253-L254

The subscription is as follows:

2024/10/28 10:54:20.377373 [gnmic] sending gNMI SubscribeRequest: subscribe='subscribe:{prefix:{origin:"Cisco-IOS-XR-ipv4-bgp-oper" elem:{name:"bgp"} elem:{name:"instances"} elem:{name:"instance"} elem:{name:"instance-active"} elem:{name:"default-vrf"} elem:{name:"neighbors"} elem:{name:"neighbor"} elem:{name:"af-data"}} subscription:{path:{elem:{name:"af-name"}} mode:SAMPLE sample_interval:30000000000} subscription:{path:{elem:{name:"number-of-bestpaths"}} mode:SAMPLE sample_interval:30000000000}}', mode='STREAM', encoding='JSON', to XXX

I think the issue is that the router sending garbage in the field:

	case *gnmi.TypedValue_JsonIetfVal:
		jsondata = updValue.GetJsonIetfVal()
	case *gnmi.TypedValue_JsonVal:
		jsondata = updValue.GetJsonVal()

If that is the case, I will open a case with the manufacturer, however I would need to precisely dump the response from the device. Is there a way to do that ?

Secondly, could we make the json parsing more forgiving (custom parser maybe) ?

[karimra]

You can see the original response by adding --format prototext to the command.