Resource manager hooks

[PawelPlesniak]

Description

Fixes #756

This PR implements a parsing of the configuration file to determine the set of resources requested for a particular session. A dummy resource manager configuration has been added to config/tests/one-controller-config.data.xml to validate that this is working as intended.

Requirements

• Gcrone/managed object confmodel#89
• Gcrone/managed object appmodel#275

Manual testing suggestions

Run the changed config and validate that the requested resources are indeed parsed out of the configuraiton

Test the change without a defined set of resources

drunc-unified-shell ssh-standalone pythoncode/drunc/config/tests/one-controller-config.data.xml one-controller-config pawel
bo[2026/02/26 18:56:25 UTC] INFO       shell.py:197                             drunc.unified_shell                                This session has requested the following resources: set()
[2026/02/26 18:56:25 UTC] INFO       shell.py:201                             drunc.unified_shell                                Setting up to use the process manager with configuration ssh-standalone and configuration id "one-controller-config" from oksconflibs:pythoncode/drunc/config/tests/one-controller-config.data.xml
[2026/02/26 18:56:25 UTC] INFO       shell.py:223                             drunc.unified_shell                                Starting process manager
[2026/02/26 18:56:25 UTC] INFO       process_manager.py:110                   drunc.process_manager                              process_manager communicating through address 10.73.136.71:35857
o[2026/02/26 18:56:25 UTC] INFO       shell.py:571                             drunc.unified_shell                                unified_shell ready with process_manager and controller commands
drunc-unified-shell > boot
[2026/02/26 18:56:27 UTC] INFO       process_manager_driver.py:96             drunc.process_manager_driver                       Booting session pawel
[2026/02/26 18:56:27 UTC] INFO       ssh_process_manager.py:368               drunc.process_manager.SSH_SHELL_process_manager    Booted 'local-connection-server' from session 'pawel' with UUID df418eaa-f8cc-499d-a3da-57e68a883ae5
[2026/02/26 18:56:29 UTC] INFO       ssh_process_manager.py:368               drunc.process_manager.SSH_SHELL_process_manager    Booted 'controller-0' from session 'pawel' with UUID 8d3d4dac-5618-4444-9216-b747823da3c4
  Looking for controller-0 on the connectivity service... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0:00:00 0:00:01
⠋ Trying to talk to the root controller... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -:--:-- 0:00:00
                                             pawel status                                             
┏━━━━━━━━━━━━━━┳━━━━━━┳━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Name         ┃ Info ┃ State   ┃ Substate ┃ In error ┃ Included ┃ Endpoint                          ┃
┡━━━━━━━━━━━━━━╇━━━━━━╇━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
│ controller-0 │      │ initial │ initial  │ No       │ Yes      │ grpc://np04-srv-029.cern.ch:34919 │
└──────────────┴──────┴─────────┴──────────┴──────────┴──────────┴───────────────────────────────────┘
Waiting on tree initialisation... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━   0% -:--:--
[2026/02/26 18:56:31 UTC] INFO       commands.py:133                          drunc.unified_shell.boot                           Booted successfully
drunc-unified-shell > terminate
[2026/02/26 18:56:33 UTC] INFO       ssh_process_manager.py:203               drunc.process_manager.SSH_SHELL_process_manager    Terminating
[2026/02/26 18:56:33 UTC] INFO       ssh_process_manager.py:206               drunc.process_manager.SSH_SHELL_process_manager    Killing all the known processes before exiting
[2026/02/26 18:56:33 UTC] INFO       ssh_process_lifetime_manager_shell.py:56 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Terminating role 'unknown' from provided UUIDs ---
[2026/02/26 18:56:33 UTC] INFO       ssh_process_lifetime_manager_shell.py:56 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Terminating role 'application' from provided UUIDs ---
[2026/02/26 18:56:33 UTC] INFO       ssh_process_lifetime_manager_shell.py:56 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Terminating role 'segment-controller' from provided UUIDs ---
[2026/02/26 18:56:33 UTC] INFO       ssh_process_lifetime_manager_shell.py:56 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Terminating role 'root-controller' from provided UUIDs ---
[2026/02/26 18:56:33 UTC] INFO       ssh_process_lifetime_manager_shell.py:50 drunc.process_manager.SSH_SHELL_process_manager    Killing 1 process(es) with role 'root-controller' from 2 candidates
[2026/02/26 18:56:35 UTC] INFO       ssh_process_manager.py:305               drunc.process_manager.SSH_SHELL_process_manager    Process 'controller-0' (session: 'pawel', user: 'pplesnia') process exited with exit code 0
[2026/02/26 18:56:35 UTC] INFO       ssh_process_lifetime_manager_shell.py:10 drunc.process_manager.SSH_SHELL_process_manager    Remote process 8d3d4dac-5618-4444-9216-b747823da3c4 (PID 2758205) terminated gracefully following SIGQUIT signal.
[2026/02/26 18:56:36 UTC] INFO       ssh_process_lifetime_manager_shell.py:57 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Role 'root-controller' complete ---
[2026/02/26 18:56:36 UTC] INFO       ssh_process_lifetime_manager_shell.py:56 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Terminating role 'local-connection-server' from provided UUIDs ---
[2026/02/26 18:56:36 UTC] INFO       ssh_process_lifetime_manager_shell.py:50 drunc.process_manager.SSH_SHELL_process_manager    Killing 1 process(es) with role 'local-connection-server' from 2 candidates
[2026/02/26 18:56:36 UTC] INFO       ssh_process_manager.py:305               drunc.process_manager.SSH_SHELL_process_manager    Process 'local-connection-server' (session: 'pawel', user: 'pplesnia') process exited with exit code 0
[2026/02/26 18:56:37 UTC] INFO       ssh_process_lifetime_manager_shell.py:10 drunc.process_manager.SSH_SHELL_process_manager    Remote process df418eaa-f8cc-499d-a3da-57e68a883ae5 (PID 2758004) terminated gracefully following SIGQUIT signal.
[2026/02/26 18:56:37 UTC] INFO       ssh_process_lifetime_manager_shell.py:57 drunc.process_manager.SSH_SHELL_process_manager    --- Shutdown stage: Role 'local-connection-server' complete ---

Test the change with a defined set of resources

drunc-unified-shell ssh-standalone config/daqsystemtest/example-configs.data.xml local-1x1-config pawel
[2026/02/26 18:57:37 UTC] INFO       shell.py:201                             drunc.unified_shell                                Setting up to use the process manager with configuration ssh-standalone and configuration id "local-1x1-config" from oksconflibs:config/daqsystemtest/example-configs.data.xml
[2026/02/26 18:57:37 UTC] INFO       shell.py:223                             drunc.unified_shell                                Starting process manager
[2026/02/26 18:57:37 UTC] INFO       process_manager.py:110                   drunc.process_manager                              process_manager communicating through address 10.73.136.71:40151
[2026/02/26 18:57:37 UTC] INFO       shell.py:571                             drunc.unified_shell                                unified_shell ready with process_manager and controller commands
drunc-unified-shell > boot
[2026/02/26 18:57:38 UTC] INFO       commands.py:72                           drunc.unified_shell.boot                           Placeholder Requesting objects in the following segments:
[2026/02/26 18:57:38 UTC] INFO       shell_utils.py:180                       drunc.unified_shell.boot                           └── df-segment: {'storage:localhost:.'}
[2026/02/26 18:57:38 UTC] INFO       commands.py:77                           drunc.unified_shell.boot                           Empty segments (skipped): ru-segment, trg-segment, hsi-fake-segment
... 
drunc-unified-shell > exit
[2026/02/26 18:57:52 UTC] INFO       shell.py:435                             drunc.unified_shell                                Shutting down the unified_shell

[2026/02/26 18:57:52 UTC] INFO       shell_utils.py:135                       drunc.utils.ShellContext                           You will not be able to issue commands to the controller anymore.
[2026/02/26 18:57:52 UTC] INFO       shell_utils.py:137                       drunc.utils.ShellContext                           Controller driver has been deleted.
[2026/02/26 18:57:52 UTC] INFO       commands.py:162                          drunc.unified_shell.terminate                      Placeholder Releasing managed objects in the following segments:
[2026/02/26 18:57:52 UTC] INFO       shell_utils.py:180                       drunc.unified_shell.terminate                      └── df-segment: {'storage:localhost:.'}
[2026/02/26 18:57:52 UTC] INFO       commands.py:168                          drunc.unified_shell.terminate                      Empty segments (skipped): ru-segment, trg-segment, hsi-fake-segment
[2026/02/26 18:57:52 UTC] INFO       ssh_process_manager.py:203               drunc.process_manager.SSH_SHELL_process_manager    Terminating
...

Type of change

• Documentation (non-breaking change that adds or improves the documentation)
• New feature (non-breaking change which adds functionality)
• Optimization (non-breaking, back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (whatever its nature)

Key checklist

• All tests pass (eg. python -m pytest)
• Pre-commit hooks run successfully (eg. pre-commit run --all-files)

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added or an issue has been opened to tackle that in the future.
  (Indicate issue here: [Feature]: Unit tests for unified shell #787)

[PawelPlesniak]

TODOs

• Make a storage of what resources the segments are using, stored in the segment controller metadata.
• The above should be done with a generic RPC that can be later be used to update resources as required.

[PawelPlesniak]

This is working as intended and MSQT passes. Will run the full test after @mroda88 approval

[mroda88]

Looks good to me and it works well for give an idea to the other WGs

[PawelPlesniak]

Converted to draft as the scope is unclear as of right now