Widget to visualize a channel as entity

[jvalkeal]

Current pip widgets are great to visualize if something is flowing between two systems. It however limit visualization to either from A to B or B to A. For some systems metrics are basically telling what's happening in the system/channel. e.g. messages exchanged through the channel which doesn't describe the direction, just combined metric A to B + B to A.

Visualization should show that something is happening in the channel without indication of the direction.