Service to write luminosity information to TTree when reading from FSRs

Sprucing writes FSRs containing the count of lumievents per run to the output mdf files. This draft will provide a service intended for use in DaVinci. The service will read the FSR when the input file is opened, create a list of pairs (run number, n_lumievents), merge any duplicated entry by run number, and write an output tree with two branches: runNumber and sumLumievents.

The user obtaining rootfiles from DaVinci jobs will hadd these rootfiles and obtain, in addition to the data, a tree with luminosity-by-run information.

Goes with DaVinci!937 (merged).

assigned to @egraveri

Add @fferrari, @elniel , @clemenci as watchers.

But don't look at it just yet please ;-)

added RTA label

Hi @egraveri, it's very nice to see this (am not looking at it yet ;-)). Can you link to the relevant tasks and add labels, to "see" the work?

Note that Sprucing outputs ROOT files, not MDFs. It is probably worth amending your header above.

Advance thanks.

added DPA-WP3 DPA-operations labels

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• 1c076047 - Add FileSummaryRecord.read_lumi test example

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• 1c076047...61942fe6 - 84 commits from branch master
• 26fefe24 - Add skeleton of service that writes the content of input FSRs to output TTree
• e118c9c7 - [LumiFSRtoTTree] The algorithm is there, now need to get it to work (and test)
• 9578a39a - [LumiFSRtoTTree] The algorithm is there, now need to get it to work (and test)
• b686e3d0 - Add FileSummaryRecord.read_lumi test example
• 85eeb866 - [LumiFSRtoTTree] Modify CMakeLists

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• fc2546b9 - Fix compilation

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• d37b347c - (WIP) [FSR to TTree] Add skeleton of test. TODO: read lumiTree during test and...

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• 6e7ddb99 - Fixed formatting

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• 33f7c79c - [FSR to TTree] test passes! though not very clean but it passes

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• 2435c405 - Fixed formatting

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@erodrigu , I'd like to test that this works in the normal use case of someone running DaVinci code on Sprucing output. I have a sample output file from running the Sprucing test make fast/Moore/test ARGS='-R Hlt2Conf.sprucing.test_excl_spruce_2022_data'. I have no clue how Run3 DaVinci works though! Can you provide a sample script in which I can include the execution of this service?

@erodrigu awesome, I'll try this out. I assume service loading is done similarly to the way it is done in Moore, e.g. https://gitlab.cern.ch/lhcb/LHCb/-/blob/master/PyConf/python/PyConf/application.py#L1044 with a ComponentConfig, similar to what is used in this LHCb project test https://gitlab.cern.ch/lhcb/LHCb/-/blob/master/Kernel/FileSummaryRecord/tests/python/FSRTests/write_lumi.py#L57 ? Or should I simply append to algs (how?)?

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• e283c04c - [tests] Add assertion test
• e8686ec3 - [tests] Add assertion test
• c92806cc - [tests] Comment out tests already done by read_lumi.py
• bd135c58 - [tests] Remove tests already done by read_lumi.py

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