#!/usr/bin/env python2.6
#
# Copyright(c) 2013      Christoph Niethammer <niethammer@hlrs.de> 
#

import os
import datetime
from optparse import OptionParser


modules = list()
modulestats = dict()

logdir = '/sw/laki/hlrs/system/modules/logs/'
enddate = datetime.date.today()
startdate = datetime.date(enddate.year, enddate.month, 1)
modulepattern=""

parser = OptionParser(usage="%prog [options] [pattern]")
parser.add_option("--logdir", metavar="DIR", dest="logdir")
parser.add_option("--startdate", metavar="YYYY-MM-DD", dest="startdate")
parser.add_option("--enddate", metavar="YYYY-MM-DD", dest="enddate")
(options, args) = parser.parse_args()
if options.logdir :
    logdir = options.logdir
if options.startdate :
    d = options.startdate
    startdate = datetime.date(int(d[0:4]),int(d[5:7]),int(d[8:10]))
if options.enddate :
    d = options.enddate
    enddate = datetime.date(int(d[0:4]),int(d[5:7]),int(d[8:10]))
if len(args) > 0 :
    modulepattern = args[0]


for logfilename in os.listdir(logdir) :
    d = datetime.date(int(logfilename[0:4]),int(logfilename[4:6]),int(logfilename[6:8]))
    if d < startdate :
        continue
    if d > enddate :
        continue
    date = d.strftime('%Y-%m-%d')
    logfile = os.path.join(logdir, logfilename)
    f = open(logfile)
    for line in f :
        if ' load' in line and modulepattern in line :
            module = line.split()[-1]
            if module not in modules:
                modules.append(module)
                modulestats[module] = 1
            else :
                modulestats[module] = modulestats[module] + 1
#        if ' swap' in line :
#            print line.split()
            

print "-"*78
print "Module statistics for " + startdate.strftime('%Y-%m-%d') + " - " + enddate.strftime('%Y-%m-%d')
print "-"*78
for (v,m) in sorted( ((v,k) for k,v in modulestats.iteritems()), reverse=True) :
    print "{0:70s}{1:>8d}".format(m, v)