skel.GENtoEVGEN.py

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#  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
#
"""Functionality core of the Gen_tf transform"""
 

 

 
import ast
import os, re, string, subprocess
import AthenaCommon.AlgSequence as acas
import AthenaCommon.AppMgr as acam
from AthenaCommon.AthenaCommonFlags import jobproperties
 
from xAODEventInfoCnv.xAODEventInfoCnvConf import xAODMaker__EventInfoCnvAlg
acam.athMasterSeq += xAODMaker__EventInfoCnvAlg(xAODKey="TMPEvtInfo")
 
theApp = acam.theApp
acam.athMasterSeq += acas.AlgSequence("EvgenGenSeq")
genSeq = acam.athMasterSeq.EvgenGenSeq
acam.athMasterSeq += acas.AlgSequence("EvgenFixSeq")
fixSeq = acam.athMasterSeq.EvgenFixSeq
acam.athMasterSeq += acas.AlgSequence("EvgenPreFilterSeq")
prefiltSeq = acam.athMasterSeq.EvgenPreFilterSeq
acam.athMasterSeq += acas.AlgSequence("EvgenTestSeq")
testSeq = acam.athMasterSeq.EvgenTestSeq

from EvgenProdTools.LogicalExpressionFilter import LogicalExpressionFilter
acam.athMasterSeq += LogicalExpressionFilter("EvgenFilterSeq")
filtSeq = acam.athMasterSeq.EvgenFilterSeq
topSeq = acas.AlgSequence()
anaSeq = topSeq
topSeq += acas.AlgSequence("EvgenPostSeq")
postSeq = topSeq.EvgenPostSeq
#topAlg = topSeq #< alias commented out for now, so that accidental use throws an error
 
 

 

import AthenaCommon.AtlasUnixGeneratorJob
include("PartPropSvc/PartPropSvc.py")
 

from PerfMonComps.PerfMonFlags import jobproperties as perfmonjp
perfmonjp.PerfMonFlags.doFastMonMT = True
 

from RngComps.RngCompsConf import AthRNGSvc
svcMgr += AthRNGSvc()
 

jobproperties.AthenaCommonFlags.AllowIgnoreConfigError = False
 

from AthenaCommon.Logging import logging
evgenLog = logging.getLogger('Gen_tf')
 

 

evgenLog.debug("****************** CHECKING EVENT GENERATION ARGS *****************")
evgenLog.debug(str(runArgs))
 
if hasattr(runArgs, "inputGeneratorFile"):
   evgenLog.info("inputGeneratorFile = " + runArgs.inputGeneratorFile)
 
if hasattr(runArgs, "outputYODAFile"):
    evgenLog.info("specified outputYODAFile = " + runArgs.outputYODAFile)
 

if not hasattr(runArgs, "outputEVNTFile") and not hasattr(runArgs, "outputEVNT_PreFile"):
    if hasattr(runArgs, "outputYODAFile"):
        evgenLog.info("No outputEVNTFile specified but outputYODAFile is used")
        evgenLog.info("Will run GENtoEVGEN without saving the output EVNT file, asuming a valid outputYODAFile will be produced")
    else:
        raise RuntimeError("No output evgen EVNT or EVNT_Pre file provided.")
 

if not hasattr(runArgs, "ecmEnergy"):
    raise RuntimeError("No center of mass energy provided.")
else:
    evgenLog.info('ecmEnergy = ' + str(runArgs.ecmEnergy) )
if not hasattr(runArgs, "randomSeed"):
    raise RuntimeError("No random seed provided.")
    # TODO: or guess it from the JO name??
if not hasattr(runArgs, "firstEvent"):
    raise RuntimeError("No first number provided.")
if ( runArgs.firstEvent <= 0):
    evgenLog.warning("Run argument firstEvent should be > 0") 
 

 

evgenLog.debug("****************** CONFIGURING EVENT GENERATION *****************")
 

from EvgenJobTransforms.EvgenConfig import evgenConfig
from GeneratorConfig.GenConfigHelpers import gens_known, gen_lhef, gens_lhef, gen_sortkey, gens_testhepmc, gens_notune, gen_require_steering, gens_purgenoendvtx
 

from EvgenProdTools.EvgenProdToolsConf import FixHepMC
if not hasattr(fixSeq, "FixHepMC"):
    fixSeq += FixHepMC()
 

from EvgenProdTools.EvgenProdToolsConf import TestHepMC
testSeq += TestHepMC(CmEnergy=runArgs.ecmEnergy*Units.GeV)
#testSeq += TestHepMC(CmEnergy=runArgs.ecmEnergy)
if not hasattr(svcMgr, 'THistSvc'):
    from GaudiSvc.GaudiSvcConf import THistSvc
    svcMgr += THistSvc()
svcMgr.THistSvc.Output = ["TestHepMCname DATAFILE='TestHepMC.root' OPT='RECREATE'"]
 

from EvgenProdTools.EvgenProdToolsConf import CopyEventWeight
if not hasattr(postSeq, "CopyEventWeight"):
    postSeq += CopyEventWeight(mcEventWeightsKey="TMPEvtInfo.mcEventWeights")
 
from EvgenProdTools.EvgenProdToolsConf import FillFilterValues
if not hasattr(postSeq, "FillFilterValues"):
    postSeq += FillFilterValues(mcFilterHTKey="TMPEvtInfo.mcFilterHT")
 

from EvgenProdTools.EvgenProdToolsConf import CountHepMC
svcMgr.EventSelector.FirstEvent = runArgs.firstEvent
theApp.EvtMax = -1
# This is necessary for athenaMP # commented out for now
#if hasattr(runArgs, "maxEvents"):
#  theApp.EvtMax = runArgs.maxEvents
 
if not hasattr(postSeq, "CountHepMC"):
    postSeq += CountHepMC(InputEventInfo="TMPEvtInfo",
                          OutputEventInfo="EventInfo",
                          mcEventWeightsKey="mcEventWeights")
#postSeq.CountHepMC.RequestedOutput = evgenConfig.nEventsPerJob if runArgs.maxEvents == -1 else runArgs.maxEvents
 
postSeq.CountHepMC.FirstEvent = runArgs.firstEvent
postSeq.CountHepMC.CorrectHepMC = True
postSeq.CountHepMC.CorrectEventID = True
 

if hasattr(runArgs, "printEvts") and runArgs.printEvts > 0:
    from TruthIO.TruthIOConf import PrintMC
    postSeq += PrintMC()
    postSeq.PrintMC.McEventKey = "GEN_EVENT"
    postSeq.PrintMC.VerboseOutput = True
    postSeq.PrintMC.PrintStyle = "Barcode"
    postSeq.PrintMC.FirstEvent = 1
    postSeq.PrintMC.LastEvent  = runArgs.printEvts
 

from EvgenProdTools.EvgenProdToolsConf import SimTimeEstimate
if not hasattr(postSeq, "SimTimeEstimate"):
    postSeq += SimTimeEstimate()
 

if hasattr(runArgs, "rivetAnas"):
    from Rivet_i.Rivet_iConf import Rivet_i
    anaSeq += Rivet_i()
    anaSeq.Rivet_i.Analyses = runArgs.rivetAnas
    anaSeq.Rivet_i.AnalysisPath = os.environ['PWD']
    if hasattr(runArgs, "outputYODAFile"):
      anaSeq.Rivet_i.HistoFile = runArgs.outputYODAFile
 
# in case of mc23 protect against changing run number in McEventSelector 
rel = os.popen("echo $AtlasVersion").read()
rel = rel.strip()
if not rel or int(rel[:2]) > 22: 
  from AthenaCommon.AppMgr import ServiceMgr
  ServiceMgr.EventSelector.EventsPerRun = int(2**63 - 1) #sys.maxint on a 64-bit machine
 

 

evgenLog.debug("****************** LOADING PRE-INCLUDES AND JOB CONFIG *****************")
 

if hasattr(runArgs, "preInclude"):
    for fragment in runArgs.preInclude:
        include(fragment)
 

if hasattr(runArgs, "preExec"):
    evgenLog.info("Transform pre-exec")
    for cmd in runArgs.preExec:
        evgenLog.info(cmd)
        exec(cmd)
 
def get_immediate_subdirectories(a_dir):
            return [name for name in os.listdir(a_dir)
                    if os.path.isdir(os.path.join(a_dir, name))]
        
# TODO: Explain!!!
def OutputTXTFile():
    outputTXTFile = None
    if hasattr(runArgs,"outputTXTFile"): outputTXTFile=runArgs.outputTXTFile
    return outputTXTFile

if len(runArgs.jobConfig) != 1:
    evgenLog.info("runArgs.jobConfig = %s" % runArgs.jobConfig)
    evgenLog.error("You must supply one and only one jobConfig file argument")
    sys.exit(1)
 
evgenLog.info("Using JOBOPTSEARCHPATH (as seen in skeleton) = '%s'" % os.environ["JOBOPTSEARCHPATH"])
FIRST_DIR = (os.environ['JOBOPTSEARCHPATH']).split(":")[0]
 
jofiles = [f for f in os.listdir(FIRST_DIR) if (f.startswith('mc') and f.endswith('.py'))]
if len(jofiles) !=1:
    evgenLog.error("You must supply one and only one jobOption file in DSID directory")
    sys.exit(1)
jofile = jofiles[0]
 
joparts = (os.path.basename(jofile)).split(".")

if joparts[0].startswith("mc") and all(c in string.digits for c in joparts[0][2:]):
    
    if len(joparts) != 3:
        evgenLog.error(jofile + " name format is wrong: must be of the form mc.<physicsShort>.py: please rename.")
        sys.exit(1)
    
    jo_physshortpart = joparts[1]
    max_jo_physshort_length = 50
    if len(jo_physshortpart) > max_jo_physshort_length:
        evgenLog.error(f"{jofile} contains a physicsShort field of more than {max_jo_physshort_length} characters: please rename.")
        sys.exit(1)
    
    jo_physshortparts = jo_physshortpart.split("_")
    if len(jo_physshortparts) < 2:
        evgenLog.error(jofile + " has too few physicsShort fields separated by '_': should contain <generators>(_<tune+PDF_if_available>)_<process>. Please rename.")
        sys.exit(1)
    
    check_jofiles="/cvmfs/atlas.cern.ch/repo/sw/Generators/MCJobOptions/scripts/check_jo_consistency.py"
    if os.path.exists(check_jofiles):
        include(check_jofiles)
        check_naming(os.path.basename(jofile))
    else:
        evgenLog.waring("check_jo_consistency.py not found, will proceed without JOs check.")
else:
    
    sys.exit(1)
 

include(jofile)
 

 

evgenLog.debug("****************** CHECKING EVGEN CONFIGURATION *****************")
 
if hasattr(runArgs,'inputGeneratorFile') and int(evgenConfig.inputFilesPerJob) == 0 : 
   evgenConfig.inputFilesPerJob = 1 
 

for opt in str(evgenConfig).split(os.linesep):
    evgenLog.info(opt)
evgenLog.info(".transform =                  Gen_tf")
 

evgenLog.info(".platform = "+str(os.environ['BINARY_TAG']))
 

if evgenConfig.obsolete:
    evgenLog.error("JOs or icludes are obsolete, please check them")
    sys.exit(1)

if not evgenConfig.generators:
    evgenLog.error("No entries in evgenConfig.generators: invalid configuration, please check your JO")
    sys.exit(1)

if len(evgenConfig.generators) > len(set(evgenConfig.generators)):
    evgenLog.error("Duplicate entries in evgenConfig.generators: invalid configuration, please check your JO")
    sys.exit(1)

gennames = sorted(evgenConfig.generators, key=gen_sortkey)

if joparts[0].startswith("Mc"): #< if this is an "official" JO
    genpart = jo_physshortparts[0]
    expectedgenpart = ''.join(gennames)
    
    expectedgenpart = expectedgenpart.replace("HerwigJimmy", "Herwig")
    def _norm(s):
        # TODO: add EvtGen to this normalization for MC14?
        return s.replace("Photospp", "").replace("Photos", "").replace("TauolaPP", "").replace("Tauolapp", "").replace("Tauola", "")
    def _norm2(s):
        if "P8B" in s:
           return s.replace("P8B","Pythia8B").replace("MG","MadGraph").replace("Ph","Powheg").replace("Ag","Alpgen").replace("EG","EvtGen")
        else:
           return s.replace("Py","Pythia").replace("MG","MadGraph").replace("Ph","Powheg").replace("H7","Herwig7").replace("Sh","Sherpa").replace("Ag","Alpgen").replace("EG","EvtGen").replace("PG","ParticleGun").replace("HepMC","HepMCAscii")
    def _short2(s):
        if "Pythia8B" in s:
           return s.replace("Pythia8B","P8B").replace("MadGraph","MG").replace("Powheg","Ph").replace("Herwig7","H7").replace("Sherpa","Sh").replace("Alpgen","Ag").replace("EvtGen","EG").replace("PG","ParticleGun")
        else:        
           return s.replace("Pythia","Py").replace("MadGraph","MG").replace("Powheg","Ph").replace("Herwigpp","Hpp").replace("Sherpa","Sh").replace("Alpgen","Ag").replace("EvtGen","EG").replace("PG","ParticleGun").replace("HepMCAscii","HepMC")
     
    if genpart != _norm(expectedgenpart)  and _norm2(genpart) != _norm(expectedgenpart):
        evgenLog.error("Expected first part of JO name to be '%s' or '%s', but found '%s'" % (_norm(expectedgenpart), _norm(_short2(expectedgenpart)), genpart))
        evgenLog.error("gennames '%s' " %(expectedgenpart))
        sys.exit(1)
 
    del _norm
    
    if not gens_notune(gennames) and len(jo_physshortparts) < 3:
        evgenLog.error(jofile + " with generators " + expectedgenpart +
                       " has too few physicsShort fields separated by '_'." +
                       " It should contain <generators>_<tune+PDF_<process>. Please rename.")
        sys.exit(1)
 

if gen_require_steering(gennames):
    if hasattr(runArgs, "outputEVNTFile") and not hasattr(runArgs, "outputEVNT_PreFile"):
        raise RuntimeError("'EvtGen' found in job options name, please set '--steering=afterburn'")
 
 

rounding = 0
if hasattr(runArgs,'inputGeneratorFile') and ',' in runArgs.inputGeneratorFile:   multiInput = runArgs.inputGeneratorFile.count(',')+1
else:
   multiInput = 0
 
# check if default nEventsPerJob used 
if not evgenConfig.nEventsPerJob:
    evgenLog.info('#############################################################')
    evgenLog.info(' !!!! no nEventsPerJob set !!!  The default 10000 used. !!! ') 
    evgenLog.info('#############################################################')
else:
    evgenLog.info(' nEventsPerJob = ' + str(evgenConfig.nEventsPerJob)  )
 
if evgenConfig.minevents > 0 :
    raise RuntimeError("evgenConfig.minevents is obsolete and should be removed from the JOs")
if evgenConfig.nEventsPerJob < 1:
    raise RuntimeError("evgenConfig.nEventsPerJob must be at least 1")
elif evgenConfig.nEventsPerJob > 100000:
    raise RuntimeError("evgenConfig.nEventsPerJob can be max. 100000")
else:
    allowed_nEventsPerJob_lt1000 = [1, 2, 5, 10, 20, 25, 50, 100, 200, 500, 1000]
    msg = "evgenConfig.nEventsPerJob = %d: " % evgenConfig.nEventsPerJob
 
    if evgenConfig.nEventsPerJob >= 1000 and evgenConfig.nEventsPerJob <=10000 and (evgenConfig.nEventsPerJob % 1000 != 0 or 10000 % evgenConfig.nEventsPerJob != 0):
           msg += "nEventsPerJob in range [1K, 10K] must be a multiple of 1K and a divisor of 10K"
           raise RuntimeError(msg)
    elif evgenConfig.nEventsPerJob > 10000  and evgenConfig.nEventsPerJob % 10000 != 0:
           msg += "nEventsPerJob >10K must be a multiple of 10K"
           raise RuntimeError(msg)
    elif evgenConfig.nEventsPerJob < 1000 and evgenConfig.nEventsPerJob not in allowed_nEventsPerJob_lt1000:
           msg += "nEventsPerJob in range <= 1000 must be one of %s" % allowed_nEventsPerJob_lt1000
           raise RuntimeError(msg)
    postSeq.CountHepMC.RequestedOutput = evgenConfig.nEventsPerJob if runArgs.maxEvents == -1  else runArgs.maxEvents
    evgenLog.info('Requested output events = '+str(postSeq.CountHepMC.RequestedOutput))
 
    # Special case of N<100: adjust TestHepMC. We will allow _one_ event to fail the checks.
    # This means the minimum efficiency is N/N+1 for N generated events. Note that if N<100,
    # each failed event costs us more than 1% of efficiency.
    if hasattr(testSeq, "TestHepMC") and postSeq.CountHepMC.RequestedOutput<100:
        testSeq.TestHepMC.EffFailThreshold = postSeq.CountHepMC.RequestedOutput/(postSeq.CountHepMC.RequestedOutput+1) - 0.01
 

if evgenConfig.keywords:
    from GeneratorConfig.GenConfigHelpers import checkKeywords
    checkKeywords(evgenConfig, evgenLog)
 

if evgenConfig.categories:
    
    lkwfile = "CategoryList.txt"
    lkwpath = None
    for p in os.environ["DATAPATH"].split(":"):
        lkwpath = os.path.join(p, lkwfile)
        if os.path.exists(lkwpath):
            break
        lkwpath = None

    allowed_cat = []
    if lkwpath:
        with open(lkwpath, 'r') as catlist:
            for line in catlist:
               allowed_list = ast.literal_eval(line)
               allowed_cat.append(allowed_list)
 
        
        bad_cat =[]
        it = iter(evgenConfig.categories)
        for x in it:
           l1 = x
           l2 = next(it)
           if "L1:" in l2 and "L2:" in l1:
               l1, l2 = l2, l1
           print ("first",l1,"second",l2)
           bad_cat.extend([l1, l2])
           for a1,a2 in allowed_cat:
               if l1.strip().lower()==a1.strip().lower() and l2.strip().lower()==a2.strip().lower():
                 bad_cat=[]
           if bad_cat:
               msg = "evgenConfig.categories contains non-standard category: %s. " % ", ".join(bad_cat)
               msg += "Please check the allowed categories list and fix."
               evgenLog.error(msg)
               sys.exit(1)
    else:
        evgenLog.warning("Could not find CategoryList.txt file %s in $DATAPATH" % lkwfile)
 
if hasattr( runArgs, "outputEVNTFile") or hasattr( runArgs, "outputEVNT_PreFile"):
    
    from AthenaPoolCnvSvc.WriteAthenaPool import AthenaPoolOutputStream
    from AthenaPoolCnvSvc.AthenaPoolCnvSvcConf import AthenaPoolCnvSvc
    if hasattr(runArgs, "outputEVNTFile"):
        poolFile = runArgs.outputEVNTFile
    elif hasattr(runArgs, "outputEVNT_PreFile"):
        poolFile = runArgs.outputEVNT_PreFile
    else:
        raise RuntimeError("Output pool file, either EVNT or EVNT_Pre, is not known.")
 
    # ROOT inadvertently broke forward compatibility in v6.30+ (see root/issues/15964)
    # This workaround is needed so that older releases can read files created by the new ones
    # For more information see ATEAM-1001 and ATEAM-1015 (for DataHeaderForm)
    svcMgr.AthenaPoolCnvSvc.PoolAttributes += [ f"DatabaseName = '{poolFile}'; FILEFORWARD_COMPATIBILITY = '1'" ]
    svcMgr.AthenaPoolCnvSvc.OneDataHeaderForm = False
 
    StreamEVGEN = AthenaPoolOutputStream("StreamEVGEN", poolFile, noTag=True, eventInfoKey="EventInfo")
 
    StreamEVGEN.ForceRead = True
    StreamEVGEN.ItemList += ["EventInfo#*", "xAOD::EventInfo#EventInfo*", "xAOD::EventAuxInfo#EventInfoAux.*", "McEventCollection#*"]
    StreamEVGEN.RequireAlgs += ["EvgenFilterSeq"]
    
    if evgenConfig.saveJets:
       StreamEVGEN.ItemList += ["xAOD::JetContainer#AntiKt4TruthJets", "xAOD::AuxContainerBase!#AntiKt4TruthJetsAux.-PseudoJet.-constituentLinks.-constituentWeights"]
       StreamEVGEN.ItemList += ["xAOD::JetContainer#AntiKt6TruthJets", "xAOD::AuxContainerBase!#AntiKt6TruthJetsAux.-PseudoJet.-constituentLinks.-constituentWeights"]
    if evgenConfig.savePileupTruthParticles:
       StreamEVGEN.ItemList += ["xAOD::TruthParticleContainer#TruthPileupParticles*"]
       StreamEVGEN.ItemList += ["xAOD::TruthParticleAuxContainer#TruthPileupParticlesAux.*"]
 
    # Remove any requested items from the ItemList so as not to write out
    for removeItem in evgenConfig.doNotSaveItems: StreamEVGEN.ItemList.remove( removeItem )
 
    # Allow (re-)addition to the output stream
    for addItem in evgenConfig.extraSaveItems: StreamEVGEN.ItemList += [ addItem ]
 

dsid = os.path.basename(runArgs.jobConfig[0])
if not dsid.isdigit():
    dsid = "999999"
svcMgr.EventSelector.RunNumber = int(dsid)
 

from GeneratorConfig.Versioning import generatorsGetInitialVersionedDictionary, generatorsVersionedStringList
gendict = generatorsGetInitialVersionedDictionary(gennames)
gennamesvers = generatorsVersionedStringList(gendict)
 
import EventInfoMgt.EventInfoMgtInit
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"hepmc_version": "HepMC" + str(os.environ['HEPMCVER'])})
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"mc_channel_number":str(dsid)})
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"lhefGenerator": '+'.join( filter( gen_lhef, gennames ) ) })
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"generators": '+'.join(gennamesvers)})
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"evgenProcess": evgenConfig.process})
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"evgenTune": evgenConfig.tune})
if hasattr( evgenConfig, "hardPDF" ) : svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"hardPDF": evgenConfig.hardPDF})
if hasattr( evgenConfig, "softPDF" ) : svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"softPDF": evgenConfig.softPDF})
if hasattr( runArgs, "randomSeed") :  svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"randomSeed": str(runArgs.randomSeed)})
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"keywords": ", ".join(evgenConfig.keywords).lower()})
 
# print version of HepMC to the log
evgenLog.info("HepMC version  " + str(os.environ['HEPMCVER']))
 
# Set AMITag in in-file metadata
from PyUtils import AMITagHelper
AMITagHelper.SetAMITag(runArgs=runArgs)
 

svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"beam_energy": str(int(runArgs.ecmEnergy*Units.GeV/2.0))})
svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"beam_type": 'collisions'})
 

from OutputStreamAthenaPool.OutputStreamAthenaPoolConf import CopyEventStreamInfo
streamInfoTool = CopyEventStreamInfo( "StreamEVGEN_CopyEventStreamInfo" )
ToolSvc += streamInfoTool
svcMgr.MetaDataSvc.MetaDataTools += [ streamInfoTool ]
 

include("EvgenJobTransforms/Generate_ecmenergies.py")
 
if 'ParticleGun' in evgenConfig.generators:

   from RngComps.RngCompsConf import AtRndmGenSvc
   svcMgr += AtRndmGenSvc()
   include("EvgenJobTransforms/Generate_randomseeds.py")
else:
# Propagate DSID and seed to the generators
   include("EvgenJobTransforms/Generate_dsid_ranseed.py")
 

generatorsList = evgenConfig.generators.copy()
if hasattr(genSeq, "Pythia8"):
    if (hasattr(genSeq.Pythia8, "Beam1") and genSeq.Pythia8.Beam1 != "PROTON" ) or \
       (hasattr(genSeq.Pythia8, "Beam2") and genSeq.Pythia8.Beam2 != "PROTON" ):
        # generator name is still "Pythia8", even when colliding nuclei
        generatorsList.append("Pythia8-Angantyr")
if gens_purgenoendvtx(generatorsList):
    fixSeq.FixHepMC.PurgeUnstableWithoutEndVtx = True
 

if 'Sherpa' in evgenConfig.generators:
    fixSeq.FixHepMC.IgnoreSemiDisconnected = True
 

if (hasattr( runArgs, "VERBOSE") and runArgs.VERBOSE ) or (hasattr( runArgs, "loglevel") and runArgs.loglevel == "DEBUG") or (hasattr( runArgs, "loglevel") and runArgs.loglevel == "VERBOSE"):
   include("EvgenJobTransforms/Generate_debug_level.py")
 

svcMgr.TagInfoMgr.ExtraTagValuePairs.update({"specialConfiguration": evgenConfig.specialConfig })
 

if hasattr(testSeq, "TestHepMC") and not gens_testhepmc(evgenConfig.generators):
    evgenLog.info("Removing TestHepMC sanity checker")
    del testSeq.TestHepMC
 

def checkBlockList(relFlavour,cache,generatorName) :
    isError = None
    with open('/cvmfs/atlas.cern.ch/repo/sw/Generators/MCJobOptions/common/BlackList_caches.txt') as bfile:
        for line in bfile.readlines():
            if not line.strip():
                continue
            # Blocklisted release flavours
            badRelFlav=line.split(',')[0].strip()
            # Blocklisted caches
            badCache=line.split(',')[1].strip()
            # Blocklisted generators
            badGens=line.split(',')[2].strip()
            
            used_gens = ','.join(generatorName)
            #Match Generator and release type e.g. AtlasProduction, MCProd
            if relFlavour==badRelFlav and cache==badCache and re.search(badGens,used_gens) is not None:
                if badGens=="": badGens="all generators"
                isError=relFlavour+","+cache+" is blocklisted for " + badGens
                return isError
    return isError
 
def checkPurpleList(relFlavour,cache,generatorName) :
    isError = None
    with open('/cvmfs/atlas.cern.ch/repo/sw/Generators/MCJobOptions/common/PurpleList_generators.txt') as bfile:
        for line in bfile.readlines():
            if not line.strip():
                continue
            # Purple-listed release flavours
            purpleRelFlav=line.split(',')[0].strip()
            # Purple-listed caches
            purpleCache=line.split(',')[1].strip()
            # Purple-listed generators
            purpleGens=line.split(',')[2].strip()
            # Purple-listed process
            purpleProcess=line.split(',')[3].strip()
 
            used_gens = ','.join(generatorName)
            #Match Generator and release type e.g. AtlasProduction, MCProd
            if relFlavour==purpleRelFlav and cache==purpleCache and re.search(purpleGens,used_gens) is not None:
                isError=relFlavour+","+cache+" is blocklisted for " + purpleGens + " if it uses " + purpleProcess
                return isError
    return isError
 

evgenLog.debug("****************** CHECKING RELEASE IS NOT BLACKLISTED *****************")
if os.path.exists('/cvmfs/atlas.cern.ch/repo/sw/Generators/MCJobOptions/common'):
   errorBL = checkBlockList("AthGeneration",rel,gennames)
   if (errorBL):
     if (hasattr( runArgs, "ignoreBlackList") and runArgs.ignoreBlackList): 
         evgenLog.warning("This run is blocklisted for this generator, please use a different one for production !! "+ errorBL )
     else:
         raise RuntimeError("This run is blocklisted for this generator, please use a different one !! "+ errorBL)   
 
   errorPL = checkPurpleList("AthGeneration",rel,gennames)
   if (errorPL):
      evgenLog.warning("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
      evgenLog.warning("!!! WARNING  !!! "+ errorPL )
      evgenLog.warning("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
 
else:
   msg.waring("No access to cvmfs, so blocklisted runs will not be checked")  

 
if hasattr(runArgs, "postInclude"):
    for fragment in runArgs.postInclude:
        include(fragment)
 
if hasattr(runArgs, "postExec"):
    evgenLog.info("Transform post-exec")
    for cmd in runArgs.postExec:
        evgenLog.info(cmd)
        exec(cmd)
 
 

acas.dumpMasterSequence()
 
 

 

evgenLog.debug("****************** HANDLING EVGEN INPUT FILES *****************")
 

datFile = None
if "McAtNlo" in evgenConfig.generators and "Herwig" in evgenConfig.generators:
    datFile = "inparmMcAtNlo.dat"
elif "Alpgen" in evgenConfig.generators:
    datFile = "inparmAlpGen.dat"
elif "Protos" in evgenConfig.generators:
    datFile = "protos.dat"
elif "ProtosLHEF" in evgenConfig.generators:
    datFile = "protoslhef.dat"
elif "AcerMC" in evgenConfig.generators:
    datFile = "inparmAcerMC.dat"
elif "CompHep" in evgenConfig.generators:
    datFile = "inparmCompHep.dat"
 

eventsFile = None
if "Alpgen" in evgenConfig.generators:
    eventsFile = "alpgen.unw_events"
elif "Protos" in evgenConfig.generators: 
    eventsFile = "protos.events"
elif "ProtosLHEF" in evgenConfig.generators:
    eventsFile = "protoslhef.events"
elif "BeamHaloGenerator" in evgenConfig.generators:
    eventsFile = "beamhalogen.events"
elif "HepMCAscii" in evgenConfig.generators:
    eventsFile = "events.hepmc"
elif "ReadMcAscii" in evgenConfig.generators:
    eventsFile = "events.hepmc"
elif gens_lhef(evgenConfig.generators):
    eventsFile = "events.lhe"
 
 

def find_unique_file(pattern):
    "Return a matching file, provided it is unique"
    import glob
    files = glob.glob(pattern)

    if not files:
        raise RuntimeError("No '%s' file found" % pattern)
    elif len(files) > 1:
        raise RuntimeError("More than one '%s' file found" % pattern)
    return files[0]
 
# This function merges a list of input LHE file to make one outputFile.  The header is taken from the first
# file, but the number of events is updated to equal the total number of events in all the input files
def merge_lhe_files(listOfFiles,outputFile):
    if(os.path.exists(outputFile)):
      print ("outputFile ",outputFile," already exists.  Will rename to ",outputFile,".OLD")
      os.rename(outputFile,outputFile+".OLD")
    output = open(outputFile,'w')
    holdHeader = ""
    nevents=0
    for file in listOfFiles:
       cmd = "grep /event "+file+" | wc -l"
       nevents+=int(subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True))
 
    for file in listOfFiles:
       inHeader = True
       header = ""
       print ("*** Starting file ",file)
       for line in open(file,"r"):

          if("<event" in line and inHeader):
             inHeader = False
             if(len(holdHeader)<1):
                holdHeader = header
                output.write(header)
             output.write(line)

          elif(not inHeader and not ("</LesHouchesEvents>" in line)):
              output.write(line)
          if(inHeader):

             if("nevents" in line):

                tmp = line.split("=")
                line = line.replace(tmp[0],str(nevents))
             elif("numevts" in line):

                tmp = line.split(" ")
                nnn = str(nevents)
                line = line.replace(tmp[1],nnn)
             header+=line
    output.write("</LesHouchesEvents>\n")
    output.close()
 
 
def mk_symlink(srcfile, dstfile):
    "Make a symlink safely"
    if dstfile:
        if os.path.exists(dstfile) and not os.path.samefile(dstfile, srcfile):
            os.remove(dstfile)
        if not os.path.exists(dstfile):
            evgenLog.info("Symlinking %s to %s" % (srcfile, dstfile))
            print ("Symlinking %s to %s" % (srcfile, dstfile))
            os.symlink(srcfile, dstfile)
        else:
            evgenLog.debug("Symlinking: %s is already the same as %s" % (dstfile, srcfile))
 

if eventsFile or datFile:
    if not hasattr(runArgs, "inputGeneratorFile") or runArgs.inputGeneratorFile == "NONE":
        raise RuntimeError("%s needs input file (argument inputGeneratorFile)" % runArgs.jobConfig)
    if evgenConfig.inputfilecheck and not re.search(evgenConfig.inputfilecheck, runArgs.inputGeneratorFile):
        raise RuntimeError("inputGeneratorFile=%s is incompatible with inputfilecheck '%s' in %s" %
                           (runArgs.inputGeneratorFile, evgenConfig.inputfilecheck, runArgs.jobConfig))
    if datFile:
      if ".tar" in os.path.basename(runArgs.inputGeneratorFile):
        inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".tar.")[0]
      elif ".tgz" in os.path.basename(runArgs.inputGeneratorFile):
        inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".tgz")[0]
      elif ".gz" in os.path.basename(runArgs.inputGeneratorFile):
        inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".gz")[0]
      else:  
        inputroot = os.path.basename(runArgs.inputGeneratorFile).split("._")[0]
 
      realDatFile = find_unique_file('*%s*.dat' % inputroot)
      mk_symlink(realDatFile, datFile)
    if eventsFile:
        myinputfiles = runArgs.inputGeneratorFile
        genInputFiles = myinputfiles.split(',')
        numberOfFiles = len(genInputFiles)
        # if there is a single file, make a symlink.  If multiple files, merge them into one output eventsFile
        if(numberOfFiles<2):
           if ".tar" in os.path.basename(runArgs.inputGeneratorFile):
             inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".tar.")[0]
           elif ".tgz" in os.path.basename(runArgs.inputGeneratorFile):
             inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".tgz")[0]
           elif ".gz" in os.path.basename(runArgs.inputGeneratorFile):
             inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".gz")[0]
           else:  
             inputroot = os.path.basename(runArgs.inputGeneratorFile).split("._")[0]
 
           if "events" in inputroot :
               inputroot = inputroot.replace(".events","")
           realEventsFile = find_unique_file('*%s.*ev*ts' % inputroot)
           mk_symlink(realEventsFile, eventsFile)
        else:
           allFiles = []
           for file in genInputFiles:
#             Since we can have multiple files from the same task, inputroot must include more of the filename
#             to make it unique
              if ".tar" in os.path.basename(runArgs.inputGeneratorFile):
                inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".tar.")[0]
              elif ".tgz" in os.path.basename(runArgs.inputGeneratorFile):
                inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".tgz")[0]
              elif ".gz" in os.path.basename(runArgs.inputGeneratorFile):
                inputroot = os.path.basename(runArgs.inputGeneratorFile).split(".gz")[0]
              else:  
                input0 = os.path.basename(file).split("._")[0]
                input1 = (os.path.basename(file).split("._")[1]).split(".")[0]
                inputroot = input0+"._"+input1
              evgenLog.info("inputroot = %s",inputroot)
              realEventsFile = find_unique_file('*%s.*ev*ts' % inputroot)
#             The only input format where merging is permitted is LHE
              with open(realEventsFile, 'r') as f:
                 first_line = f.readline()
                 if(not ("LesHouche" in first_line)):
                    raise RuntimeError("%s is NOT a LesHouche file" % realEventsFile)
                 allFiles.append(realEventsFile)
           merge_lhe_files(allFiles,eventsFile)
 
else:
    if hasattr(runArgs, "inputGeneratorFile") and runArgs.inputGeneratorFile != "NONE":
        raise RuntimeError("inputGeneratorFile arg specified for %s, but generators %s do not require an input file" %
                           (runArgs.jobConfig, str(gennames)))
    if evgenConfig.inputfilecheck:
        raise RuntimeError("evgenConfig.inputfilecheck specified in %s, but generators %s do not require an input file" %
                           (runArgs.jobConfig, str(gennames)))
 

if evgenConfig.auxfiles:
    from PyJobTransformsCore.trfutil import get_files
    get_files(evgenConfig.auxfiles, keepDir=False, errorIfNotFound=True)
 
 

 
def _checkattr(attr, required=False):
    if not hasattr(evgenConfig, attr) or not getattr(evgenConfig, attr):
        msg = "evgenConfig attribute '%s' not found." % attr
        if required:
            raise RuntimeError("Required " + msg)
        return False
    return True
 
if hasattr(runArgs, "outputTXTFile"):
    # counting the number of events in LHE output
    count_ev = 0
    with open(eventsFile) as f:
        for line in f:
           count_ev += line.count('/event')
 
    print("MetaData: %s = %s" % ("Number of produced LHE events ", count_ev))
elif hasattr(runArgs, "inputGeneratorFile"):
    # counting the number of events in LHE input
    count_ev = 0
    with open(eventsFile) as f:
        for line in f:
           count_ev += line.count('/event')
 
    print("MetaData: %s = %s" % ("Number of input LHE events ", count_ev))
 
 
if _checkattr("description", required=True):
    msg = evgenConfig.description
    if _checkattr("notes"):
        msg += " " + evgenConfig.notes
    print ("MetaData: %s = %s" % ("physicsComment", msg))
 
if _checkattr("generators", required=True):
    print ("MetaData: %s = %s" % ("generatorName", "+".join(gennamesvers)))
if _checkattr("process"):
    print ("MetaData: %s = %s" % ("physicsProcess", evgenConfig.process))
if _checkattr("tune"):
    print ("MetaData: %s = %s" % ("generatorTune", evgenConfig.tune))
if _checkattr("hardPDF"):
    print ("MetaData: %s = %s" % ("hardPDF", evgenConfig.hardPDF))
if _checkattr("softPDF"):
    print ("MetaData: %s = %s" % ("softPDF", evgenConfig.softPDF))
if _checkattr("nEventsPerJob"):
    print ("MetaData: %s = %s" % ("nEventsPerJob", evgenConfig.nEventsPerJob))
if _checkattr("keywords"):
    print ("MetaData: %s = %s" % ("keywords", ", ".join(evgenConfig.keywords).lower()))
if _checkattr("categories"):
    print ("MetaData: %s = %s" % ("categories", ", ".join(evgenConfig.categories)))
if _checkattr("specialConfig"):
    print ("MetaData: %s = %s" % ("specialConfig", evgenConfig.specialConfig))
# TODO: Require that a contact / JO author is always set
if _checkattr("contact"):
    print ("MetaData: %s = %s" % ("contactPhysicist", ", ".join(evgenConfig.contact)))
print ("MetaData: %s = %s" % ("randomSeed", str(runArgs.randomSeed)))
 
# Output list of generator filters used
filterNames = [alg.getType() for alg in acas.iter_algseq(filtSeq)]
excludedNames = ['AthSequencer', 'PyAthena::Alg', 'TestHepMC']
filterNames = list(set(filterNames) - set(excludedNames))
print ("MetaData: %s = %s" % ("genFilterNames", ", ".join(filterNames)))
 
if (hasattr( runArgs, "allowOldFilter") and runArgs.allowOldFilter):
  for alg in acas.iter_algseq(filtSeq):
     filtName = alg.getType()
     exceptName =['xAOD','Jet']
     if filtName not in excludedNames:
        if not any(ex in filtName for ex in exceptName):  
           alg.AllowOldFilter=True
 

 
from PyJobTransformsCore.runargs import RunArguments
runPars = RunArguments()
runPars.nEventsPerJob = evgenConfig.nEventsPerJob
runPars.maxeventsstrategy = evgenConfig.maxeventsstrategy
with open("config.pickle", "wb") as f:
    import pickle
    pickle.dump(runPars, f)
 
 

evgenLog.info("****************** STARTING EVENT GENERATION *****************")