The topic of "Interactive athena with ComponentAccumulator" briefly came up during the last Reco meeting.
Here is what I could come up with: Open an interactive console using python's
This is steered by a command-line parameter (
-i). The information is passed in the same (somewhat complicated and fragile) way than the debug-stage:
AthConfigFlags.fillFromArgs parses the command-line and sets the flag
Exec.Interactive. MainServiceCfg sets an attribute of the
ComponentAccumlator that is checked in the run( method.
Right now, the interactive console is started at right before
app.initialize(). This allows to inspect the final configuration (this is my primary usage of
athena -i). In principle one could at this point also go manually through the state-machine, run a few events, and then do
import AthenaPython.PyAthena as PyAthena sg=PyAthena.py_svc("StoreGateSvc")
to get hold of StoreGate. But this is not exactly user-friendly. And as far as I could see, the SG-Proxies are invalid at this point.