Hi Ian,
This sounds very interesting.
You should be able to make a plugin that does what you want without modifying the log_run function.
The email_adj.py plugin contains some code that could give you some ideas. It checks each station once a second to determine when a change happens. Actually there is an easier way. The list gv.srvals holds the state of the stations/zones (see gv_reference.txt in the OSPi directory for more.). You could copy that list then use a loop to check when a change happens:
import time
from gv import srvals, lrun
zone_state = srvals[:]
while zone_state == srvals:
time.sleep(1)
The list gv.lrun holds the data that is used to create log entries in log_run(). You could use that even if logging is disabled.
As far as the Android app goes, I think it uses it’s own logging functions separate from the one in ospi. There are some issues with the logging in ospi that will be addressed soon so log_run() will likely change in the near future.
Dan