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indexspatial.py
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indexspatial.py
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import bz2, sys, os, time, math, struct
import xmlprocessing, slippy
from pycontainers import compressedfile, qsfs
#UK dump size nodes=33017987 ways=4040979 relations=80851
def StoreFactoryCreate(fina):
try:
os.unlink(sys.argv[2])
except:
pass
outFileSystem = qsfs.Qsfs(compressedfile.CompressedFile(fina, createFile=True), initFs = 1,
deviceSize = 1024 * 1024 * 1024 * 1024, #1Tb
maxFileSize = 200 * 1024 * 1024,
blockSize = 1024 * 1024,
maxFiles = 5000000)
print outFileSystem.statvfs("/")
tileStorage = TileStorage(outFileSystem)
return tileStorage, outFileSystem
def StoreFactoryOpen(fina):
outFileSystem = qsfs.Qsfs(compressedfile.CompressedFile(fina, createFile=False), initFs = 0)
print outFileSystem.statvfs("/")
tileStorage = TileStorage(outFileSystem)
return tileStorage, outFileSystem
class TileStorage(object):
def __init__(self, outFileSystem):
self.outFileSystem = outFileSystem
self.minZoom = 11
self.maxZoom = 11
#self.entry = struct.Struct(">ffQI")
self.entry = struct.Struct(">QI")
for i in range(self.maxZoom+1):
self.outFileSystem.mkdir("/"+str(i))
self.handleCache = {}
self.handleAccessTime = {}
def Add(self, lat, lon, objId, version):
self.RecusiveZoomAdd(self.minZoom, lat, lon, objId, version)
def Open(self, currentZoom, tilex, tiley):
datFilename = "/{0}/{1}/{2}.dat".format(currentZoom, tilex, tiley)
if datFilename in self.handleCache:
self.handleAccessTime[datFilename] = time.time()
return self.handleCache[datFilename]
try:
fi = self.outFileSystem.open(datFilename, "a+")
except:
folderName = "/{0}/{1}".format(currentZoom, tilex)
if not self.outFileSystem.exists(folderName):
self.outFileSystem.mkdir(folderName)
fi = self.outFileSystem.open(datFilename, "a+")
self.handleCache[datFilename] = fi
self.handleAccessTime[datFilename] = time.time()
#Discard old handles
if len(self.handleCache) > 100000:
sortableList = zip(self.handleAccessTime.values(), self.handleAccessTime.keys())
sortableList.sort()
cutPoint = len(sortableList) / 10
for ti, fina in sortableList[:cutPoint]:
del self.handleAccessTime[fina]
del self.handleCache[fina]
return fi
def RecusiveZoomAdd(self, currentZoom, lat, lon, objId, version):
tilex, tiley = slippy.deg2num(lat, lon, currentZoom)
#print lat, lon, tilex, tiley
#fullFile = "/{0}/{1}/{2}.full".format(currentZoom, tilex, tiley)
#if self.outFileSystem.exists(fullFile) and currentZoom < self.maxZoom:
# self.RecusiveZoomAdd(currentZoom + 1, lat, lon, objId, version)
# return
fi = self.Open(currentZoom, tilex, tiley)
objIdInt = int(objId)
if objIdInt == 0:
print "Warning: adding a zero objId"
fi.write(self.entry.pack(objIdInt, version))
numEntries = len(fi) / self.entry.size
#print lat, lon, currentZoom, numEntries
#if numEntries >= 100 and currentZoom < self.maxZoom:
# self.outFileSystem.open(fullFile, "w")
def flush(self):
self.outFileSystem.flush()
class TagIndex(object):
def __init__(self, fina, createFile=True):
self.nodes = 0
self.ways = 0
self.relations = 0
self.objs = 0
self.lastDisplayTime = time.time()
self.lastDisplayCount = 0
self.objNumStart = None
self.objNumEnd = None
if createFile:
self.outfi, self.outFileSystem = StoreFactoryCreate(fina)
else:
self.outfi, self.outFileSystem = StoreFactoryOpen(fina)
def __del__(self):
print "Flushing"
self.flush()
def flush(self):
self.outfi.flush()
self.outFileSystem.flush()
def TagLimitCallback(self, name, depth, attr, childTags, childMembers):
if depth != 2:
return
if time.time() - self.lastDisplayTime > 1.:
rate = (self.objs - self.lastDisplayCount) / (time.time() - self.lastDisplayTime)
self.lastDisplayCount = self.objs
self.lastDisplayTime = time.time()
print self.nodes, self.ways, self.relations, self.objs, "("+str(rate)+" obj per sec)"
doInsert = True
if self.objNumStart is not None and self.objNumStart > self.objs:
doInsert = False
if self.objNumEnd is not None and self.objNumEnd < self.objs:
doInsert = False
if name == "node":
self.nodes += 1
if doInsert:
lat = float(attr['lat'])
lon = float(attr['lon'])
objId = int(attr['id'])
version = int(attr['version'])
self.outfi.Add(lat, lon, objId, version)
if name == "way":
self.ways += 1
if name == "relation":
self.relations += 1
self.objs += 1
if __name__ == "__main__":
if len(sys.argv) < 2:
print "Specify input file as argument"
exit(1)
if len(sys.argv) < 3:
print "Specify output file as argument"
exit(1)
infi = bz2.BZ2File(sys.argv[1])
tagIndex = TagIndex(sys.argv[2]+"/sp")
parser = xmlprocessing.ReadXml()
parser.TagLimitCallback = tagIndex.TagLimitCallback
parser.ParseFile(infi)
#print len(tagIndex.nodeStartTable)
#print tagIndex.nodeStartTable.binsInUse
#print tagIndex.nodeStartTable.hashMask
print tagIndex.nodes, tagIndex.ways, tagIndex.relations, tagIndex.objs
tagIndex.flush()
del tagIndex
del parser
print "All done"