compareOutputFiles.py

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from Gaudi.Configuration import *
from GaudiPython import AppMgr, gbl
from ROOT import TFile, TBufferFile, TBuffer
from multiprocessing import Process, Queue
from Configurables import LHCbApp
import sys

#
# loadFile.py
# -----------
# Open a dst file for inspection
#


def checkKeys(name):
    # Check the TTree keys in each file
    fname = name[4:]  # TFile doesn't need the "PFN:" prefix
    tf = TFile(fname, 'REC')


importOptions('$STDOPTS/LHCbApplication.opts')
#importOptions( '$GAUDIPOOLDBROOT/options/GaudiPoolDbRoot.opts' )
importOptions('$GAUDICNVROOT/options/Setup.opts')


OutputStream("DstWriter").Output = ''
HistogramPersistencySvc().OutputFile = ''
MessageSvc(OutputLevel=ERROR)
EventSelector().PrintFreq = 100

ApplicationMgr(OutputLevel=ERROR,
               AppName='File Check - Serial vs Parallel')
# TopAlg = ['UnpackMCParticle', 'UnpackMCVertex'] )

PAR = 'PARALLEL'
SER = 'SERIAL'


def CompareTrees(pname, sname):
    pf = TFile(pname, 'REC')
    sf = TFile(sname, 'REC')
    event = '_Event'
    pfks = pf.GetListOfKeys()
    sfks = sf.GetListOfKeys()
    pfkeys = list([pfk.GetName() for pfk in pfks])
    pfkeys.sort()
    sfkeys = list([sfk.GetName() for sfk in sfks])
    sfkeys.sort()
    pMeta = []
    pEvent = []
    pOther = []
    for k in pfkeys:
        if k.startswith(event):
            pEvent.append(k)
        elif k.startswith('##'):
            pMeta.append(k)
        else:
            pOther.append(k)
    sMeta = []
    sEvent = []
    sOther = []
    for k in sfkeys:
        if k.startswith(event):
            sEvent.append(k)
        elif k.startswith('##'):
            sMeta.append(k)
        else:
            sOther.append(k)

    if pMeta == sMeta:
        pass
    else:
        print 'Meta Data differs'

    if pEvent == sEvent:
        pass
    else:
        print 'Event data differs'

    if pOther != sOther:
        pset = set(pOther)
        sset = set(sOther)
        pExtra = pset - sset
        sExtra = sset - pset
        if pExtra:
            print 'Extra Data in parallel file : ', pExtra
        if sExtra:
            print 'Extra Data in serial   file : ', sExtra
        if sExtra or pExtra:
            print 'Files will have different sizes'
    pf.Close()
    sf.Close()


def switchDict(d):
    # switch a dictionary around ;  make the values the keys, and vice versa
    # only works if all values are unique
    nkeys = len(d.keys())
    vals = d.values()
    nvals = len(vals)
    for v in vals:
        if vals.count(v) > 1:
            print 'Dictionary cannot be switched, values not unique'
            return None
    print 'Dict has keys/values : %i/%i' % (nkeys, nvals)
    pairs = d.items()  # returns (key, val) tuples in a list
    newd = {}
    for k, entry in pairs:
        newd[entry] = k
    return newd


def printDict(d, name='unspecified'):
    # Print out a dictionary in the form
    #
    # Dictionary Name :
    #   key     value
    #   key     value
    #   ...
    #
    print '-' * 80
    print 'Dictionary %s : ' % (name)
    for k in iter(d.keys()):
        print '\t', k, '\t', d[k]
    print '-' * 80


def Reader(readerType, filename, qacross, qToEngine):
    #
    # Process for reading a file
    # One process for reading Serial File, another for Parallel File
    #
    # First the order of events is determined, (parallel != serial, usually)
    #
    # Then the events are run *in order* using AppMgr().runSelectedEvents(pfn, evtNumber)
    # on both Serial-Reader and Parallel-Reader processes.
    #
    # The string repr of everything in the TES is placed in a dictionary and
    # sent to the comparison Process, which compares the two dictionaries
    #
    a = AppMgr()
    sel = a.evtsel()
    evt = a.evtsvc()

    header = '/Event/Rec/Header'
    sel.open(filename)
    ct = 0
    order = {}
    fname = filename[4:]  # runSelectedEvents doesn't need the "PFN:" prefix

    # determine the ordering
    while True:
        a.run(1)
        if evt[header]:
            eNumber = int(evt[header].evtNumber())
            order[eNumber] = ct
            ct += 1
        else:
            break

    if readerType == SER:
        # send the ordering details to the parallel-reader
        order = switchDict(order)
        qacross.put(order)
        qacross.put(None)
        # changeName
        serOrder = order
    elif readerType == PAR:
        # receive the serial ordering from queue,  and send ordering to SerialReader
        for serOrder in iter(qacross.get, None):
            pass
        lsks = len(serOrder.keys())
        lpks = len(order.keys())
        print 'Events in Files (serial/parallel) : %i / %i' % (lsks, lpks)

    # now run files in the order specified by the serial ordering
    # and send them one by one to the comparison engine
    for i in iter(serOrder.keys()):
        if readerType == PAR:
            i = order[serOrder[i]]

        a.runSelectedEvents(fname, i)
        lst = evt.getList()

        lst.sort()
        ascii = dict(
            [(l, (evt[l].__class__.__name__, evt[l].__repr__())) for l in lst])
        qToEngine.put(ascii)
    qToEngine.put(None)
    print '%s Reader Finished' % (readerType)


def ComparisonEngine(pQueue, sQueue):
    # The Comparison Engine runs on a seperate forked process and receives
    # events in pairs, one each from Serial FileReader and Parallel FileReader
    #
    # The events arrive in Dictionary Format, d[path]=(className, string_repr)
    # and are compared using the compareEvents method
    #
    # Results are stored in an array of bools (PerfectMatch=True, Diff=False)
    #
    results = []
    while True:
        pitem = pQueue.get()
        sitem = sQueue.get()
        if pitem == sitem == None:
            print 'Termination Signals received ok'
            break
        elif pitem == None:
            print 'pitem != sitem : ', pitem, sitem
            break
        elif sitem == None:
            print 'pitem != sitem : ', pitem, sitem
            break
        results.append(compareEvents(pitem, sitem))
    print '=' * 80
    print 'Comparison Engine Finished'
    print '-' * 80
    print 'Total Events Checked : %i' % (len(results))
    print 'Perfect Matches      : %i' % (sum(results))
    print 'Errors               : %i' % (len(results) - sum(results))
    print '=' * 80


def checkForAddressDifference(a, b):
    # the __repr__() method for Event Data Objects will return a generic
    # string "DataObject at 0xADDRESS" for non-Pythonised objects
    # If these objects have the same path, they are equal, but this
    # cannot be tested with "==" in Python, as the memory address will
    # be different for the two different DataObjects, so this method
    # will check if the difference is in the address
    #
    # args : a, b two string representations
    ref = 'DataObject at 0x'
    if a[:16] == b[:16] == ref:
        return True
    else:
        return False


def compareEvents(s, p):
    # events in form of dictionary, with form
    # d[ path ] = tuple( className, string_repr )

    # check 1 : number of keys (paths)
    sks = s.keys()
    pks = p.keys()
    sks.sort()
    pks.sort()
    if len(sks) == len(pks):
        pass
    else:
        # There may be extra keys in the parallel file
        # example: DstWriter may ask for /Event/Prev/MC/Header#1
        #          but in TESSerializer, *all* DataObjects will be sent
        #          including /Event/Prev and /Event/Prev/MC

        # check for extra keys in the parallel file which are just containing DataObjects
        # if found, remove them

        extras = list(set(pks) - set(sks))
        for e in extras:
            if p[e][0] == 'DataObject':
                pks.remove(e)
            else:
                print 'Extra Other thing found!', e, p[e][0]
                return False

    # check 2 : same paths?
    if sks == pks:
        pass
    else:
        return False

    # check 3 : check the content
    l = len(sks)
    diffs = []
    for i in xrange(l):
        key = sks[i]
        # compare class name
        if s[key][0] == p[key][0]:
            pass
        else:
            diffs.append(key)
        # compare string representation
        if s[key][1] == p[key][1]:
            pass
        elif checkForAddressDifference(p[key][1], s[key][1]):
            pass
        else:
            diffs.append(key)

    # finish
    if diffs:
        return False
    else:
        return True


def CheckFileRecords(par, ser):

    print "Checking File Records"

    parFSR = GetFSRdicts(par)
    serFSR = GetFSRdicts(ser)

    diff1 = set(parFSR["TimeSpanFSR"].iteritems()) - \
        set(serFSR["TimeSpanFSR"].iteritems())
    diff2 = set(parFSR["EventCountFSR"].iteritems()) - \
        set(serFSR["EventCountFSR"].iteritems())

    print "\nDifferent entries in TimeSpanFSR:  \t" + str(len(diff1)) + "\nDifferent entries in EventCountFSR:\t" + str(len(diff2))

    for k in ["LumiFSRBeamCrossing", "LumiFSRBeam2", "LumiFSRNoBeam"]:
        diff3 = set(parFSR[k]["key"]) - set(serFSR[k]["key"])
        diff4 = set(parFSR[k]["incr"]) - set(serFSR[k]["incr"])
        diff5 = set(parFSR[k]["integral"]) - set(serFSR[k]["integral"])
        print "Different entries in " + str(k) + ": \tkey: " + str(len(diff3)) + " increment: " + str(len(diff4)) + " integral: " + str(len(diff5))


def LumiFSR(lumi):

    runs = []
    files = []
    info = {}
    keys = []

    for r in lumi.runNumbers():
        runs.append(r)

    for f in lumi.fileIDs():
        files.append(f)
    s = str(lumi)
    sa = s.split("info (key/incr/integral) : ")[-1]
    sa = sa.split('/')[:-1]

    key = []
    incr = []
    integral = []
    for rec in sa:
        k, i, t = rec.split()
        key.append(int(k))
        incr.append(int(i))
        integral.append(int(t))

    return (runs, files, key, incr, integral)


def GetFSRdict(filename, queue):

    FSR = {"TimeSpanFSR":  {'earliest': 0, 'latest': 0},
           "LumiFSRBeamCrossing":  {'key': 0, 'incr': 0, 'integral': 0},
           "LumiFSRBeam1":  {'key': 0, 'incr': 0, 'integral': 0},
           "LumiFSRBeam2":  {'key': 0, 'incr': 0, 'integral': 0},
           "LumiFSRNoBeam":  {'key': 0, 'incr': 0, 'integral': 0},
           "EventCountFSR":  {'input': 0, 'output': 0, 'statusFlag': 0}}

    options = "from LumiAlgs.LumiFsrReaderConf import LumiFsrReaderConf as LumiFsrReader; LumiFsrReader().OutputLevel =  INFO; LumiFsrReader().inputFiles = ['%s'] ;" % filename
    options += "LumiFsrReader().Persistency='ROOT'; LumiFsrReader().EvtMax = 1; from Configurables import LHCbApp; LHCbApp().Persistency='ROOT';  from Configurables import CondDB, DDDBConf;"
    options += " CondDB().UseLatestTags=['%s']; DDDBConf(DataType='%s');" % (
        2011, 2011)
    exec options
    app = AppMgr()
    app.run(1)
    fsr = app.filerecordsvc()

    lst = fsr.getHistoNames()

    if lst:
        for l in lst:

            ob = fsr.retrieveObject(l)

            if "LumiFSR" in l:

                assert ob.numberOfObjects() == 1
                k = ob.containedObject(0)
                runs, files, keys, increment, integral = LumiFSR(k)

                FSR[l[l.rfind('/') + 1:]]['runs'] = runs
                FSR[l[l.rfind('/') + 1:]]['files'] = files
                FSR[l[l.rfind('/') + 1:]]['key'] = keys
                FSR[l[l.rfind('/') + 1:]]['incr'] = increment
                FSR[l[l.rfind('/') + 1:]]['integral'] = integral

            if "TimeSpanFSR" in l:

                FSR["TimeSpanFSR"]['earliest'] = ob.containedObject(
                    0).earliest()
                FSR["TimeSpanFSR"]['latest'] = ob.containedObject(0).latest()

            if "EventCountFSR" in l:

                FSR["EventCountFSR"]['input'] = ob.input()
                FSR["EventCountFSR"]['output'] = ob.output()
                FSR["EventCountFSR"]['statusFlag'] = ob.statusFlag()

    app.stop()
    app.finalize()

    queue.put(FSR)


def CompareFSR(pout, sout):

    parFSR = pout.get()
    serFSR = sout.get()

    print "Comparing File Records"

    diff1 = set(parFSR["TimeSpanFSR"].iteritems()) - \
        set(serFSR["TimeSpanFSR"].iteritems())
    diff2 = set(parFSR["EventCountFSR"].iteritems()) - \
        set(serFSR["EventCountFSR"].iteritems())

    print "\nDifferent entries in TimeSpanFSR:  \t" + str(len(diff1)) + "\nDifferent entries in EventCountFSR:\t" + str(len(diff2))

    for k in ["LumiFSRBeamCrossing", "LumiFSRBeam2", "LumiFSRNoBeam"]:
        diff3 = set(parFSR[k]['key']) - set(serFSR[k]['key'])
        diff4 = set(parFSR[k]['incr']) - set(serFSR[k]['incr'])
        diff5 = set(parFSR[k]['integral']) - set(serFSR[k]["integral"])
        print "Different entries in " + str(k) + ": \tkey: " + str(len(diff3)) + " increment: " + str(len(diff4)) + " integral: " + str(len(diff5))

    print "\nParallel: \n" + str(parFSR)
    print "\nSerial: \n" + str(serFSR)


if __name__ == '__main__':

    args = sys.argv
    args.pop(0)  # get rid of script name
    if len(args) != 2:
        print 'Please supply two arguments : > python loadFile <parallelFile> <serialFile>'
        sys.exit(0)
    else:
        par = 'PFN:' + args[0]
        ser = 'PFN:' + args[1]
        print 'Parallel File to be analysed : %s' % (par)
        print 'Serial   File to be analysed : %s' % (ser)

    pname = par[4:]  # TFile doesn't need the "PFN:" prefix
    sname = ser[4:]

    qacross = Queue()
    pout = Queue()
    sout = Queue()

    par = Process(target=Reader, args=(PAR, par, qacross, pout))
    ser = Process(target=Reader, args=(SER, ser, qacross, sout))
    com = Process(target=ComparisonEngine, args=(pout, sout))

    #com.start() ; par.start() ; ser.start()
    #ser.join()  ; par.join()  ; com.join()

    #CompareTrees( pname, sname )

    print "Check File Records"

    ser = sys.argv[0]
    par = sys.argv[1]

    pout = Queue()
    sout = Queue()

    sp = Process(target=GetFSRdict, args=(ser, sout))
    pp = Process(target=GetFSRdict, args=(par, pout))
    cp = Process(target=CompareFSR, args=(pout, sout))

    sp.start()
    pp.start()
    cp.start()
    sp.join()
    pp.join()
    cp.join()