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Check presence of hit files before adding to TChain #13842

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merged 1 commit into from
Jan 9, 2025
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Check presence of hit files before adding to TChain #13842

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3 changes: 3 additions & 0 deletions DataFormats/simulation/include/SimulationDataFormat/DigitizationContext.h
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Original file line number Diff line number Diff line change
Expand Up @@ -209,6 +209,9 @@ inline void DigitizationContext::retrieveHits(std::vector<TChain*> const& chains
int entryID,
std::vector<T>* hits) const
{
if (chains.size() <= sourceID) {
return;
}
auto br = chains[sourceID]->GetBranch(brname);
if (!br) {
LOG(error) << "No branch found with name " << brname;
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8 changes: 8 additions & 0 deletions DataFormats/simulation/src/DigitizationContext.cxx
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Expand Up @@ -99,6 +99,14 @@ bool DigitizationContext::initSimChains(o2::detectors::DetID detid, std::vector<
return false;
}

// check that all files are present, otherwise quit
for (int source = 0; source < mSimPrefixes.size(); ++source) {
if (!std::filesystem::exists(o2::base::DetectorNameConf::getHitsFileName(detid, mSimPrefixes[source].data()))) {
LOG(info) << "Not hit file present for " << detid.getName() << " (exiting SimChain setup)";
return false;
}
}

simchains.emplace_back(new TChain("o2sim"));
// add the main (background) file
simchains.back()->AddFile(o2::base::DetectorNameConf::getHitsFileName(detid, mSimPrefixes[0].data()).c_str());
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