There is a script in the second post of thread that will get you started. That script posts to an emonhub socket, when it was originally written it was started as one of several scripts and before systemd in Jessie, but a simple service unit could be used to start and manage ir as a daemon yes.
I develop many of these little scripts that post to emonhub sockets as an initial step towards creating a bespoke emonhub interfacer. hopefully this will become an interfacer one day so that users can add a number of pulsecounters to a Pi with just a few connections and a edit of the emonhub.conf.