Where do Extensions go in a Python3 install?

[raowenqmul]

Hello,
GridPP has a Dirac Extension called GridPPDIRAC.

When I installed DIRAC (v7r3p12) on python2 with our GridPP Dirac Extension at /opt/DIRAC/GridPPDIRAC
and with an install.cfg containing the following lines:

## GridPPDIRAC
  GridPP = yes
  #Extensions += GridPP
  ExtraModules += GridPPDIRAC
  Agents += Configuration/UsersAndGroupsAgent
  Agents += Configuration/AutoBdii2CSAgent

Then the installer auto discovers the 2 agents from /opt/DIRAC/GridPPDIRAC as can be seen from this extract of the installer output:

Trying to autodiscover Configuration/AutoBdii2CSAgent
Trying to load GridPPDIRAC.ConfigurationSystem.Agent.AutoBdii2CSAgent
Called from module GridPPDIRAC.ConfigurationSystem.private.AutoBDIISEs
Found GridPPDIRAC.ConfigurationSystem.Agent.AutoBdii2CSAgent

However when I installed DIRAC (7.3.12) on python3 and ask for installation in /opt/DIRAC with
./install_site.sh -i /opt/dirac -v install.cfg
and with an install.cfg containing the same lines as above then the auto discovery of agents in /opt/DIRAC/GridPPDIRAC fails with the following installer output:

2022-03-10 14:46:49 UTC dirac-setup-site [140179810096960] INFO: Trying to autodiscover Configuration/AutoBdii2CSAgent
2022-03-10 14:46:49 UTC dirac-setup-site [140179810096960] VERBOSE: Trying to load WebAppDIRAC.ConfigurationSystem.Agent.AutoBdii2CSAgent
2022-03-10 14:46:49 UTC dirac-setup-site [140179810096960] VERBOSE: Trying to load DIRAC.ConfigurationSystem.Agent.AutoBdii2CSAgent
2022-03-10 14:46:49 UTC dirac-setup-site [140179810096960] VERBOSE: Trying to load DIRACWebAppResources.ConfigurationSystem.Agent.AutoBdii2CSAgent
2022-03-10 14:46:49 UTC dirac-setup-site [140179810096960] ERROR: Software for agent Configuration/AutoBdii2CSAgent is not installed

My question is how do I tell DIRAC on python3 where to look in the filesystem for our GridPP extension?

I may well have other porting work to do but I think getting DIRAC to know where to look it probably the first step so any pointers would be gratefully received!

Many thanks for any ideas!

Alex Owen

[aldbr]

Python3 installation is a bit different from Python2 installation.
Here is the Server installation documentation: https://dirac.readthedocs.io/en/latest/AdministratorGuide/ServerInstallations/InstallingDiracServer.html

In the Primary server installation section, you can see differences between Python2 and Python3 installations:

• location, version, extension and additional packages related to the installation are passed via the command line interface in Python3 (while in Python2, you had to write them in install.cfg as you said).

Run install_site.sh giving the edited configuration file as the argument. The configuration file must have .cfg extension (CFG file). While not strictly necessary, it’s advised that a version is added with the ‘-v’ switch (pick the most recent one, see herehttps://pypi.org/project/DIRAC/#history). In the same way, extensions have to be added with the ‘-e’ switch (the name of the extension should be complete). Finally, further pip packages (e.g. WebAppDIRAC) can follow with the ‘-p’ switch, which can be repeated multiple times:

./install_site.sh -i /opt/dirac [-v <x.y.z>] [-e <extension>] [-p <extra-pip-install>] install.cfg