RootImport1.py

#!/usr/bin/env python3
 
 
'''
DQM RootImport test
Test import for Offline root file
with histogram name include subdir prefix
'''
import os
import basf2 as b2
from ROOT import TFile, TH1F, gROOT
 
gROOT.SetBatch(True)
 
filein = "histin1.root"
fileout = 'histout1.root'
 
f = TFile(filein, "RECREATE")
 
h_expno = TH1F("DQMInfo/expno", "1", 1, 0, 1)
h_runno = TH1F("DQMInfo/runno", "1", 1, 0, 1)
h_rtype = TH1F("DQMInfo/rtype", "null", 1, 0, 1)
h_test = TH1F("TEST/test", "", 1, 0, 1)
h_nevent = TH1F("DAQ/Nevent", "", 1, 0, 1)
for n in range(0, 10):
    h_nevent.Fill(n)
 
f.Write()
f.Close()
 
main = b2.create_path()
 
dqminput = b2.register_module('DQMHistAnalysisInputRootFile')
dqminput.param('SelectHistograms', [])  # leave blank to include all folders
dqminput.param('FileList', [filein])
dqminput.param('EventInterval', 0)
dqminput.param("EnableRunInfo", True)
main.add_module(dqminput)
 
main.add_module("DQMHistAutoCanvas")
 
dqmoutput = b2.register_module('DQMHistAnalysisOutputFile')
dqmoutput.param('OutputFolder', './')
dqmoutput.param('Filename', fileout)
main.add_module(dqmoutput)
 
# Process all events
b2.process(main)
 
expected = ["DQMInfo/c_info", "DAQ/c_Nevent", "DQMInfo/c_expno", "DQMInfo/c_runno", "DQMInfo/c_rtype", "TEST/c_test"]
print("== resulting file content ==")
f = TFile(fileout, "READ")
for k in f.GetListOfKeys():
    o = k.ReadObj()
    print(o.ClassName(), k)
    if o.GetName() == "DQMInfo/c_info":
        if "Exp 1, Run 1, RunType null" not in o.GetTitle():
            b2.B2ERROR(f"Run Info not found in {o.GetName()}: {o.GetTitle()}")
    if o.GetName() in expected:
        expected.remove(o.GetName())
print("============================")
if len(expected) > 0:
    b2.B2ERROR("missing items in outfile: ", expected)
 
os.remove(filein)
os.remove(fileout)