csrichter
/
gr-multirds
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Browse Source

added caching, moved table read to other thread (-> faster startup)

dev
Clemens Richter 9 years ago
parent
8981aa1345
commit
f707ddba9c
1 changed files with 70 additions and 29 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 77
      python/tmc_classes.py

77
python/tmc_classes.py
Unescape View File

@ -30,13 +30,22 @@
#rename to common.py?
from bitstring import BitArray
import copy,csv,code
import hashlib,os,time
import cPickle as pickle#faster for python2
from collections import namedtuple
#Street = namedtuple("Street", "name lcn")
#Street(lcn=12,name="test")
#Street(name='test', lcn=12)
#Street(lcn=12,name="test").name
import threading
#thr = threading.Thread(target=foo, args=(), kwargs={})
#thr.start() # will run "foo"
#....
#thr.is_alive() # will return whether foo is running currently
#....
#thr.join() # will wait till "foo" is done
language="de"#currently supported: de, en (both partially)
@ -53,25 +62,36 @@ def ordinal(num):
return str(num) + suffix
class lcl:
def __init__(self,lcldir):
self.init_done=False
self.thr = threading.Thread(target=self.readtables, args=[lcldir], kwargs={})
self.thr.start()
def readtables(self,lcldir):
if os.path.exists(lcldir) and not os.path.exists(lcldir+"/cache"):
os.makedirs(lcldir+"/cache")
try:
#self.points= self.dat_to_dict(lcldir+'POINTS.DAT','ISO 8859-15','LCD')
#self.poffsets= self.dat_to_dict(lcldir+'POFFSETS.DAT','ISO 8859-15','LCD')
self.names= self.dat_to_dict(lcldir+'NAMES.DAT','ISO 8859-15','NID')
#self.roads=self.dat_to_dict(lcldir+'ROADS.DAT','ISO 8859-15','LCD')
#self.segments=self.dat_to_dict(lcldir+'SEGMENTS.DAT','ISO 8859-15','LCD')
#self.allocated_codes=self.dat_to_dict(lcldir+'LOCATIONCODES.DAT','ISO 8859-15','LCD')
#self.areas=self.dat_to_dict(lcldir+'ADMINISTRATIVEAREA.DAT','ISO 8859-15','LCD')
self.allocated_codes=self.dat_to_tuple_dict(lcldir+'LOCATIONCODES.DAT','ISO 8859-15','Code')
self.points= self.dat_to_tuple_dict(lcldir+'POINTS.DAT','ISO 8859-15','Point')
self.poffsets= self.dat_to_tuple_dict(lcldir+'POFFSETS.DAT','ISO 8859-15','POffset')
self.roads=self.dat_to_tuple_dict(lcldir+'ROADS.DAT','ISO 8859-15','Road')
self.segments=self.dat_to_tuple_dict(lcldir+'SEGMENTS.DAT','ISO 8859-15','Segment')
self.areas=self.dat_to_tuple_dict(lcldir+'ADMINISTRATIVEAREA.DAT','ISO 8859-15','Area')
self.start=time.time()
#print("start\t"+str(time.time()-self.start))
#self.points= self.dat_to_dict(lcldir,'POINTS.DAT','ISO 8859-15','LCD')
#self.poffsets= self.dat_to_dict(lcldir,'POFFSETS.DAT','ISO 8859-15','LCD')
self.names= self.dat_to_dict(lcldir,'NAMES.DAT','ISO 8859-15','NID')
#self.segments=self.dat_to_dict(lcldir,'SEGMENTS.DAT','ISO 8859-15','LCD')
#self.allocated_codes=self.dat_to_dict(lcldir,'LOCATIONCODES.DAT','ISO 8859-15','LCD')
#self.areas=self.dat_to_dict(lcldir,'ADMINISTRATIVEAREA.DAT','ISO 8859-15','LCD')
self.allocated_codes=self.dat_to_tuple_dict(lcldir,'LOCATIONCODES.DAT','ISO 8859-15','Code')
self.points= self.dat_to_tuple_dict(lcldir,'POINTS.DAT','ISO 8859-15','Point')
self.poffsets= self.dat_to_tuple_dict(lcldir,'POFFSETS.DAT','ISO 8859-15','POffset')
self.roads=self.dat_to_tuple_dict(lcldir,'ROADS.DAT','ISO 8859-15','Road')
self.segments=self.dat_to_tuple_dict(lcldir,'SEGMENTS.DAT','ISO 8859-15','Segment')
self.areas=self.dat_to_tuple_dict(lcldir,'ADMINISTRATIVEAREA.DAT','ISO 8859-15','Area')
self.init_done=True
print("lcl time:\t"+str(time.time()-self.start))
# code.interact(local=locals())
except IOError as e:
print(e)
print("location table not found")
def lcn_allocated(self,LCN):
self.thr.join()
if self.allocated_codes.has_key(LCN):
return self.allocated_codes[LCN].ALLOCATED==u"1"
else:
@ -91,8 +111,21 @@ class lcl:
return self.points[LCD]
def get_name(self,NID):
return self.names[NID]["NAME"]
def dat_to_tuple_dict(self,filename,encoding,tuple_name):
csv_reader = csv.reader(open(filename), delimiter=';', quotechar='"')
def dat_to_tuple_dict(self,lcldir,filename,encoding,tuple_name):
cache_version_str="v1.0"
md5_hash=hashlib.md5(open(lcldir+filename, 'rb').read()+cache_version_str).hexdigest()
if os.path.exists(lcldir+"/cache/"+md5_hash) and os.path.exists(lcldir+"/cache/"+md5_hash+"_header"):#return cached table
#code.interact(local=locals())
#print("unpickle_start\t"+str(time.time()-self.start))
header=pickle.load( open(lcldir+"/cache/"+md5_hash+"_header", "rb" ) )
tupleClass=namedtuple(tuple_name," ".join(header))
globals()[tuple_name] = tupleClass#so that pickle finds the dynamic class
ret_dict=pickle.load( open(lcldir+"/cache/"+md5_hash, "rb" ) )
#print("unpickle_end\t"+str(time.time()-self.start))
return ret_dict
else:#read DAT file and cache result
#print("read_start\t"+str(time.time()-self.start))
csv_reader = csv.reader(open(lcldir+filename), delimiter=';', quotechar='"')
header=csv_reader.next()
ret_dict={}
tupleClass=namedtuple(tuple_name," ".join(header))
@ -102,9 +135,16 @@ class lcl:
linetuple=tupleClass(*unirow)# "*" unpacks the list
lcn=int(linetuple.LCD)
ret_dict[lcn]=linetuple
#code.interact(local=locals())
#print("pickle_start\t"+str(time.time()-self.start))
globals()[tuple_name] = tupleClass#so that pickle finds the dynamic class
pickle.dump( ret_dict, open( lcldir+"/cache/"+md5_hash, "wb" ) )
pickle.dump( header, open( lcldir+"/cache/"+md5_hash+"_header", "wb" ) )
#print("pickle_end\t"+str(time.time()-self.start))
return ret_dict
def dat_to_dict(self,filename,encoding,id_col_name):
csv_reader = csv.reader(open(filename), delimiter=';', quotechar='"')
def dat_to_dict(self,lcldir,filename,encoding,id_col_name):
#print("datbegin\t"+str(time.time()-self.start))
csv_reader = csv.reader(open(lcldir+filename), delimiter=';', quotechar='"')
header=csv_reader.next()
ret_dict={}
for row in csv_reader:
@ -113,6 +153,7 @@ class lcl:
linedict=dict(zip(header,unirow))
id_num=int(linedict[id_col_name])
ret_dict[id_num]=linedict
#print("datend\t"+str(time.time()-self.start))
return ret_dict
class tmc_event:
def __init__(self,ecn,tableobj):

Write Preview
Loading…
Cancel
Save