Possible to suppress empty messages?

[bewing]

I am dealing with a system that is mapping an internal database to arbitrary path elements in gNMI where keys are part of the elem path string, instead of actually being filterable keys. As a result, I am doing a LOT of filtering on events, and in some cases, end up with messages (lists of Events) that are comprised of just empty events after using the event-drop filter to delete unwanted data. The file output looks like this:

[
  {}
]
[
  {},
  {}
]
[
  {}
]
[
  {},
  {}
]
[
  {},
  {}
]
[
  {},
  {}
]
[
  {}
]
[
  {},
  {}
]

Is it possible to completely remove empty events from the message, and drop/suppress empty messages instead of writing them to outputs further downstream?

[karimra]

I think it should be doable to add a knob under the output, something like ignore-empty: true

[Sparc0]

would like this setting added also.

[karimra]

@bewing , @Sparc0 #61 makes the drop processor remove matching messages from the events list. The messages won't make it to the downstream outputs.