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import re
import numpy
import ConfigParser
import binascii
term = {'td_len':(lambda x : len(x)==32),
'data_num':(lambda x : len(x)==4),
'url':(lambda x : x.find['NUll']),
'sfh_len':(lambda x : len(x)>20),
'not_null':(lambda x : len(x)!=0)}
class calculation(object):
"""docstring for calculation"""
def __init__(self, arg):
super(calculation, self).__init__()
self.arg = arg
@staticmethod
def cal_ent(x):
x_value_list = set([x[i] for i in range(x.shape[0])])
ent = 0.0
num_0 = x[x == 0].shape[0]
for x_value in x_value_list:
if(x_value==0):
continue
p = float(x[x == x_value].shape[0])/(x.shape[0]- num_0)
logp = numpy.log2(p)
ent -=p*logp
return ent
class data_value(object):
"""docstring for data_value"""
def __init__(self, arg):
super(data_value, self).__init__()
self.arg = arg
@staticmethod
def get_data_values(data):
data_set = re.split(r"URL:|ServerIP:|MediaType:|MediaLen:|Etag:|LastModify:",data)
#data_set[0]=null,data_set[1]=url
data_value_dic = [long(0)]*6
for x in xrange(1,len(feature_list)+1):
if(x==1):
if(term['not_null'](data_set[x])==True):
data_value_dic[0] = binascii.crc32(data_set[x])
else:
data_value_dic[0] = 0
elif(x==2):
if(term['not_null'](data_set[x])==True):
data_value_dic[1] = binascii.crc32(data_set[x])
else:
data_value_dic[1] = 0
elif(x==3):
data_value_dic[2] = long(data_set[x])
elif(x==4):
data_value_dic[3] = long(data_set[x])
elif(x==5):
if(term['not_null'](data_set[x])==True):
data_value_dic[4] = binascii.crc32(data_set[x])
else:
data_value_dic[4] = 0
elif(x==6):
if(term['not_null'](data_set[x])==True):
data_value_dic[5] = binascii.crc32(data_set[x])
else:
data_value_dic[5] = 0
return data_value_dic
config = ConfigParser.RawConfigParser()
config.read("cal_information.conf")
raw_file_address = config.get("file","raw_file_address")
ripe_file_address = config.get("file","ripe_file_address")
feature_list =[i for i in config.get("feature","feature_name").split(",")]
i=0
with open(raw_file_address,'r') as infile:
for line in infile:
i+=1
if(i%10000==0):
print i
if(i==50000):
break
line_split = re.split(";",line)
data_value_temp = data_value.get_data_values(line_split[5])
data_value_temp.extend([binascii.crc32(line_split[j]) for j in range(6,19)])
data_value_temp.append(binascii.crc32(line_split[0]))
if(i==1):
a=numpy.array(data_value_temp)
else:
a=numpy.row_stack((a,numpy.array(data_value_temp)))
for i in range(20):
if(i==0):
print "URL:"+str(calculation.cal_ent(a[:,i]))
elif(i==1):
print "ServerIP:"+str(calculation.cal_ent(a[:,i]))
elif(i==2):
print "MediaType:"+str(calculation.cal_ent(a[:,i]))
elif(i==3):
print "MediaLen:"+str(calculation.cal_ent(a[:,i]))
elif(i==4):
print "Etag:"+str(calculation.cal_ent(a[:,i]))
elif(i==5):
print "LastModify:"+str(calculation.cal_ent(a[:,i]))
elif(i==6):
print "td_0k:"+str(calculation.cal_ent(a[:,i]))
elif(i==7):
print "td_data_md5_1k:"+str(calculation.cal_ent(a[:,i]))
elif(i==8):
print "td_1k:"+str(calculation.cal_ent(a[:,i]))
elif(i==9):
print "td_data_md5_2k:"+str(calculation.cal_ent(a[:,i]))
elif(i==10):
print "td_2k:"+str(calculation.cal_ent(a[:,i]))
elif(i==11):
print "td_data_md5_4k:"+str(calculation.cal_ent(a[:,i]))
elif(i==12):
print "td_4k:"+str(calculation.cal_ent(a[:,i]))
elif(i==13):
print "td_data_md5_8k:"+str(calculation.cal_ent(a[:,i]))
elif(i==14):
print "td_8k:"+str(calculation.cal_ent(a[:,i]))
elif(i==15):
print "td_data_md5_16k:"+str(calculation.cal_ent(a[:,i]))
elif(i==16):
print "td_16k:"+str(calculation.cal_ent(a[:,i]))
elif(i==17):
print "td_data_md5_32k:"+str(calculation.cal_ent(a[:,i]))
elif(i==18):
print "td_32k:"+str(calculation.cal_ent(a[:,i]))
elif(i==19):
print "id:"+str(calculation.cal_ent(a[:,i]))
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