[TPC-QC] Add functionality to query the PV position from CCDB.

[makor]

Feature needs to be tested. Right now I am also not sure what timestamp is used for MeanVertexObject.
Depends on the 02 (also draft) PR: AliceO2Group/AliceO2#13922

[knopers8]

Right now I am also not sure what timestamp is used for MeanVertexObject.

I could be wrong, but I think DPL matches the timestamp to whatever timestamp is associated with the data that arrives in the same timeslice.

[makor]

Feature needs to be tested. Right now I am also not sure what timestamp is used for MeanVertexObject. Depends on the 02 (also draft) PR: AliceO2Group/AliceO2#13922

I found these lines in the log regarding the validity of the object. Piotr is right and the timestamps are matched as far as I can tell:
[551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:17.904910 Received the following activity boundary propositions: 1732335520904, 0, 0, 1740658757226. Selected: 1732335520904 [551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:17.904930 Received the following activity boundary propositions: 1732338196479, 18446744073709551615, 18446744073709551615, 1740658757226. Selected: 1732338196479 [551000:qc-task-TPC-Tracks]: [13:19:17][INFO] Correctly handshaken websocket connection. [550998:internal-dpl-ccdb-backend]: Info in <TJAlienConnectionManager>: Opening connection to JCentral. Please wait [550998:internal-dpl-ccdb-backend]: Info in <TJAlienConnectionManager>: Opening connection to 128.142.249.34 [550998:internal-dpl-ccdb-backend]: Info in <TJAlienConnectionManager>: Successfully connected to 128.142.249.34 [550998:internal-dpl-ccdb-backend]: Info in <TJAlienFile::Open>: Accessing file /alice/data/CCDB/CTP/Calib/OrbitReset/15/03564/90aeb374-a93b-11ef-81ce-0aa140641b9a in SE <ALICE::GSI::SE2> [550998:internal-dpl-ccdb-backend]: [13:19:18][INFO] ccdb reads http://alice-ccdb.cern.ch/CTP/Calib/OrbitReset/1732325876352/90aeb374-a93b-11ef-81ce-0aa140641b9a for 1732335520904 (load to memory, agent_id: makorr-1740658756-n20VMa), [550998:internal-dpl-ccdb-backend]: [13:19:18][WARN] timestamp 1732325876352 for orbit 0 and orbit reset time 1732325876351 differs by >5000 from the TF creation time 1732335520904, use the latter [550998:internal-dpl-ccdb-backend]: Info in <TJAlienFile::Open>: Accessing file /alice/data/CCDB/GLO/Calib/MeanVertex/01/30280/66fe33a1-a952-11ef-81cf-0aa200321b9a in SE <ALICE::GSI::SE2> [550998:internal-dpl-ccdb-backend]: [13:19:18][INFO] ccdb reads http://alice-ccdb.cern.ch/GLO/Calib/MeanVertex/1732335510902/66fe33a1-a952-11ef-81cf-0aa200321b9a for 1732335520904 (load to memory, agent_id: makorr-1740658756-n20VMa), [550998:internal-dpl-ccdb-backend]: Info in <TJAlienFile::Open>: Accessing file /alice/data/CCDB/GLO/Config/GRPECS/14/16656/fbc29916-c973-11ec-b790-2a010e0a0b16 in SE <ALICE::GSI::SE2> [550998:internal-dpl-ccdb-backend]: [13:19:19][INFO] ccdb reads http://alice-ccdb.cern.ch/GLO/Config/GRPECS/1451602800000/fbc29916-c973-11ec-b790-2a010e0a0b16 for 1732335520904 (load to memory, agent_id: makorr-1740658756-n20VMa), [550998:internal-dpl-ccdb-backend]: Info in <TJAlienFile::Open>: Accessing file /alice/data/CCDB/GLO/Config/GRPMagField/09/18739/3c7b19a5-a92e-11ef-81ce-0aa202c71b9a in SE <ALICE::GSI::SE2> [550998:internal-dpl-ccdb-backend]: [13:19:19][INFO] ccdb reads http://alice-ccdb.cern.ch/GLO/Config/GRPMagField/1732320152000/3c7b19a5-a92e-11ef-81ce-0aa202c71b9a for 1732335520904 (load to memory, agent_id: makorr-1740658756-n20VMa), [550998:internal-dpl-ccdb-backend]: Info in <TJAlienFile::Open>: Accessing file /alice/data/CCDB/GLO/Param/MatLUT/06/29739/3f0d0f81-99d9-11ee-b9a2-200114580202 in SE <ALICE::GSI::SE2> [550998:internal-dpl-ccdb-backend]: [13:19:19][INFO] ccdb reads http://alice-ccdb.cern.ch/GLO/Param/MatLUT/1546300800000/3f0d0f81-99d9-11ee-b9a2-200114580202 for 1732335520904 (load to memory, agent_id: makorr-1740658756-n20VMa), [550998:internal-dpl-ccdb-backend]: [13:19:19][INFO] Sending end-of-stream message to channel from_internal-dpl-ccdb-backend_to_qc-task-TPC-Tracks [550998:internal-dpl-ccdb-backend]: [13:19:19][INFO] Sending end-of-stream message to channel from_internal-dpl-ccdb-backend_to_internal-dpl-injected-dummy-sink [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] GRP MagField object updated [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] MagneticField::Print: MagneticFieldMap: [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] MagneticField::Print: Solenoid (-0.999995*)5 kG, Dipole ON (-0.999994) [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] MagneticField::Print: Machine B fields for p-p beam (7000 GeV): QGrad: 22.0002 Dipole: 37.8781 [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] MagneticField::Print: Uses Sol30_Dip6_Hole of /home/max/alice/sw/ubuntu2204_x86-64/O2/dev-local2/share/Common/maps/mfchebKGI_sym.root [551000:qc-task-TPC-Tracks]: Info in <TGeoGlobalMagField::SetField>: Global magnetic field set to <MagneticFieldMap> [551000:qc-task-TPC-Tracks]: Info in <TGeoGlobalMagField::Lock>: Global magnetic field <MagneticFieldMap> is now locked [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] Caching in 123354567314512 ptr to GLO/GRPMAGFIELD/0 (0xb7d8b80) [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] GRP ECS object updated [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] Caching in 123354567311568 ptr to GLO/GRPECS/0 (0x9e1dfb0) [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] material LUT updated [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] Initializing voxel layer lookup [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] Loaded 440 params from $(O2_ROOT)/share/Common/maps/sol5k.txt [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] Caching in 123354588756992 ptr to GLO/MATLUT/0 (0xc0e7ff0) [551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:19.870085 ! �[1;33mWarning - Seen TFID equal to 0, which is not expected in production data. Will use 1 instead, will not warn further.�[0m [551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:19.870100 Got nOrbitsPerTF 128 for TF 1 [551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:19.872052 ! �[1;33mWarning - Could not update CCDB objects requested by GRPGeomHelper�[0m [551000:qc-task-TPC-Tracks]: [13:19:19][INFO] Caching in 123354567308608 ptr to GLO/MEANVERTEX/0 (0x98da680) [551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:19.872774 Received an EndOfStream, finishing the current cycle [551000:qc-task-TPC-Tracks]: 2025-02-27 13:19:19.872787 The objects validity is (1732335520904, 1732338196479), (1732335520904, 1732335520914), (1, 1)