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dba.py
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dba.py
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import cPickle
#import bsddb.db as db
from bsddb import db, dbutils
import time,hashlib
import zlib
import porterstemming
import contentprocess as contentline
class preparecontent(object):
def __init__(self):
self.bufferlist={}
self.isclosed=0
self.dbstart()
def dbstart(self):
self.ctempdb=db.DB()
self.ctempdb.open('/tmp/tempdb.db', None, db.DB_HASH, db.DB_CREATE)
def insertbufferlist(self,urlkey,content):
self.bufferlist[urlkey]=content
def gettempurl(self):
return self.ctempdb.keys()
def gettempsize(self):
return self.ctempdb.stat()["ndata"]
def gettempdic(self):
tdic={}
for x in self.ctempdb.keys():
tl=cPickle.loads(self.ctempdb[x])
tdic[x]=tl
return tdic
def sync(self):
for x in self.bufferlist.keys():
cl=cPickle.dumps(self.bufferlist[x],protocol=1)
dbutils.DeadlockWrap(self.ctempdb.put, x , cl, max_retries=12)
self.cleardic()
self.ctempdb.sync()
def delete(self):
for x in self.ctempdb.keys():
self.ctempdb.delete(x)
self.cleardic()
self.ctempdb.sync()
def cleardic(self):
self.bufferlist={}
def close(self):
# self.sync()
self.isclosed=1
self.ctempdb.close()
class DicQuery(object):
def __init__(self):
self.pstemmer=porterstemming.PorterStemmer()
dicdir="dic/"
self.utf8doc=dicdir+"utf-8doc.db"
#self.spae=dicdir+"spae.db"
self.utf8anu=dicdir+"utf-8anu.db"
self.docdb=db.DB()
#self.spaedb=db.DB()
self.anudb=db.DB()
self.docdb.open(self.utf8doc, None, db.DB_HASH, db.DB_DIRTY_READ)
#self.spaedb.open(self.spae, None, db.DB_HASH, db.DB_DIRTY_READ)
self.anudb.open(self.utf8anu, None, db.DB_HASH, db.DB_DIRTY_READ)
def dicclose(self):
self.docdb.close()
#self.spaedb.close()
self.anudb.close()
def tailobject(self,tail):
worddic={}
wordlist=[]
for i in tail:
for qword in i.dicword:
word=qword[0]
if self.docdb.has_key(word.encode("utf-8")):
dbname=self.docdb[word.encode("utf-8")]
worddic[dbname]=word
wordlist.append(dbname)
for qword in i.companword:
word=qword[0]
aw=0
for x in word:
if 58>=ord(x)>=127:
print ord(x)
break
else:
aw=1
if aw==1:
word=self.pstemmer.stem(word.lower(),0,len(word)-1)
if self.anudb.has_key(word.encode("utf-8")):
dbname=self.anudb[word.encode("utf-8")]
worddic[dbname]=word
wordlist.append(dbname)
return (worddic,wordlist)
class DataInsert(object):
def __init__(self):
self.wordlist=[]
self.md5url=''
self.url=''
self.companwordcount=0
self.dicdir="dic/"
self.pstemmer=porterstemming.PorterStemmer()
def urldbinit(self):
self.urldb=db.DB()
self.anurldb=db.DB()
self.urlreltime=db.DB()
self.urldb.open(self.dicdir+'anurl.db', None, db.DB_HASH, db.DB_CREATE)
self.anurldb.open(self.dicdir+'url.db', None, db.DB_HASH, db.DB_CREATE)
self.urlreltime.open(self.dicdir+'urlreltime.db', None, db.DB_HASH, db.DB_CREATE)
def urldbclose(self):
self.urldb.close()
self.anurldb.close()
self.urlreltime.close()
def md5hex(self,str):
return hashlib.md5(str).hexdigest()
def httpsplit(self,url):
diclist = url.split('/')
i=0
enuri="http:/"
for deuri in diclist:
if i:
enuri=enuri+'/'+deuri
i+=1
return enuri
def inserturldb(self):
self.uri=self.url
if not self.anurldb.has_key(self.uri):
self.urldb['%s'%self.md5url]='%s'%self.uri
self.anurldb['%s'%self.uri]='%s'%self.md5url
self.urlreltime['%s'%self.md5url]='%s'%time.time()
else:
self.urlreltime['%s'%self.md5url]='%s'%time.time()
def outdicdbinit(self):
#self.spaedb=db.DB()
#self.spaedb.set_cachesize(0,10*1024*1024,0)
self.anuwdb=db.DB()
self.anuwdb.set_cachesize(0,10*1024*1024,0)
#self.spaedb.open(self.dicdir+'spae.db', None, db.DB_HASH, db.DB_CREATE)
self.anuwdb.open(self.dicdir+'utf-8anu.db', None, db.DB_HASH, db.DB_CREATE)
def outdicdbclose(self):
#self.spaedb.sync()
self.anuwdb.sync()
#self.spaedb.close()
self.anuwdb.close()
def anuworddb(self):
for x in self.wordlist:
comencode=x[0].encode("utf-8")
if x[1]==2:
comencode=self.pstemmer.stem(comencode.lower(),0,len(comencode)-1)
# print comencode
# comencode=comencodestemed
if x[1]>2:
self.companwordcount+=1
if not self.anuwdb.has_key(comencode):
self.anuwdb['%s'%comencode]='%s'%(self.md5hex(comencode))
# self.anuwdb.sync()
class OriginalPage(object):
def __init__(self):
self.url=''
self.content=''
self.exist=0
self.synccount=0
self.initdb()
def initdb(self):
self.dbfile="database/original.db"
self.dbhtmlserial="database/oriserial.db"
self.odb=db.DB()
self.odb.set_cachesize(0,100*1024*1024,0)
self.odb.open(self.dbfile, None, db.DB_HASH, db.DB_CREATE)
self.serialdb=db.DB()
self.serialdb.set_cachesize(0,100*1024*1024,0)
self.serialdb.open(self.dbhtmlserial, None, db.DB_HASH, db.DB_CREATE)
self.serialdb[chr(0)*4]='0' # initial serial db.
self.serialcursor=self.serialdb.cursor()
def insertoriginalct(self):
if not self.odb.has_key(self.url):
try:
serialnumber=contentline.asciitoint(self.serialcursor.last()[0])+1
asciiserial=contentline.inttoascii(serialnumber)
dbutils.DeadlockWrap(self.serialdb.put, asciiserial, self.url,max_retries=12)
except db.DBPageNotFoundError:
print "WARNING: DBPageNotFoundError while loading database"
self.serialdb.sync()
self.close()
print 'Close db',
time.sleep(3)
self.initdb()
print '-> initial db'
self.serialdb.sync()
serialnumber=contentline.asciitoint(serialcursor.last()[0])+1
asciiserial=contentline.inttoascii(serialnumber)
dbutils.DeadlockWrap(self.serialdb.put, asciiserial, self.url,max_retries=12)
compresscontent=zlib.compress(self.content,9)
dbutils.DeadlockWrap(self.odb.put, self.url, compresscontent,max_retries=12)
#self.odb['%s'%self.url]='%s'%(compresscontent)
self.synccount+=1
if self.synccount//20000==0:
self.sync()
return
def checkexist(self):
if not self.odb.has_key(self.url):
self.exist=True
else:
self.exist=False
return self.exist
def queryoriginalct(self):
try:
if self.odb.has_key(self.url):
if len(self.odb.get(self.url))>0:
return zlib.decompress(self.odb.get(self.url),15)
except db.DBRunRecoveryError:
print "WARNING: db.DBRunRecoveryError while loading database"
self.odb.sync()
self.close()
print 'Close db',
time.sleep(3)
self.initdb()
print '-> initial db'
self.odb.sync()
def sync(self):
self.odb.sync()
self.serialdb.sync()
def close(self):
self.odb.sync()
self.odb.close()
self.serialdb.sync()
self.serialdb.close()
return
class Purecontent(object):
def __init__(self,dbmode):
self.url_md5=''
self.content=''
self.title=''
self.purecotentinline=[]
self.exist=0
#self.dbmode="r"
self.openpdb(dbmode)
def openpdb(self,dbmode):
dbenv = db.DBEnv()
envflags= db.DB_THREAD | db.DB_INIT_MPOOL | db.DB_INIT_LOCK
dbenv.set_mp_mmapsize(10*1024*1024)
dbenv.set_cachesize(0,50*1024*1024,0)
homeDir='database/'
dbenv.open(homeDir, envflags|db.DB_CREATE)
self.pdb=db.DB(dbenv)
self.pdb.open('purecontent.db', None, db.DB_HASH, db.DB_CREATE)
self.tdb=db.DB()
titledb="database/title.db"
#self.dbfile="database/purecontent.db"
inlinedb="database/purecontentinline.db"
countline="database/purecontentcount.db"
dbconserial="database/pureserial.db"
dbpureserial="database/serialpure.db"
self.serialdb=db.DB()
self.puresedb=db.DB()
self.pureinline=db.DB()
self.purecontentcount=db.DB()
if dbmode=="c":
self.tdb.open(titledb, None, db.DB_HASH, db.DB_CREATE)
self.puresedb.open(dbpureserial, None, db.DB_HASH, db.DB_CREATE)
self.pureinline.open(inlinedb, None, db.DB_HASH, db.DB_CREATE)
self.purecontentcount.open(countline, None, db.DB_HASH, db.DB_CREATE)
self.serialdb.open(dbconserial, None, db.DB_HASH, db.DB_CREATE)
self.serialcursor=self.serialdb.cursor()
else:
self.tdb.open(titledb, None, db.DB_HASH, db.DB_DIRTY_READ)
self.puresedb.open(dbpureserial, None, db.DB_HASH, db.DB_DIRTY_READ)
self.pureinline.open(inlinedb, None, db.DB_HASH, db.DB_DIRTY_READ)
self.purecontentcount.open(countline, None, db.DB_HASH, db.DB_DIRTY_READ)
self.serialdb.open(dbconserial, None, db.DB_HASH, db.DB_DIRTY_READ)
def insertPurecontent(self):
if not self.pdb.has_key(self.url_md5) and len(self.content) > 1:
self.serialdb[chr(0)*4]='0' # initial serial db.
serialnumber=contentline.asciitoint(self.serialcursor.last()[0])+1
asciiserial=contentline.inttoascii(serialnumber)
self.serialdb[asciiserial]=self.url_md5 # serialdb insert
self.puresedb['%s'%self.url_md5]=asciiserial # insert serial to url_md5
compresscontent=zlib.compress(self.content,9)
self.pdb['%s'%asciiserial]='%s'%(compresscontent)
if not self.tdb.has_key(asciiserial) and len(self.title) > 1:
self.tdb['%s'%asciiserial]='%s'%(self.title)
# insert purecontentcount and pureinline
totallinesize=len(self.purecotentinline)
self.purecontentcount['%s'%asciiserial]='%s'%str(totallinesize)
# 2 bytes serial line
self.pureinline['%s'%asciiserial+contentline.lintoascii(0)]=self.title
for x in xrange(totallinesize):
serialkey=asciiserial+contentline.lintoascii(x+1)
self.pureinline['%s'%serialkey]=self.purecotentinline[x]
def queryencodcontent(self, md5url):
purecon,puretitle='',''
if self.pdb.has_key(md5url):
purecon=self.pdb.get(md5url)
if self.tdb.has_key(md5url):
puretitle=self.tdb.get(md5url)
return (purecon,puretitle)
def serialpure(self, md5url):
return self.serialdb.get(md5url)
def querycontentinline(self, pureconserial):
return self.pureinline.get(pureconserial)
def querycontentcount(self, asciiserial):
return self.purecontentcount.get(asciiserial)
def queryserial(self, md5url):
return self.puresedb.get(md5url)
def querycontent(self, key):
pil,puretitle='',''
if self.pureinline.has_key(key):
pil=self.pureinline.get(key)
if self.tdb.has_key(key[0:4]):
puretitle=self.tdb.get(key[0:4])
return (pil.decode("utf-8"),puretitle)
def queryPurecontent(self, md5url):
if self.pdb.has_key(md5url[0:4]):
purecon=zlib.decompress(self.pdb.get(md5url[0:4]),15)
#purecon=self.pdb.get(md5url[0:4])
else:
purecon=''
if self.tdb.has_key(md5url[0:4]):
puretitle=self.tdb.get(md5url[0:4])
else:
puretitle=''
return (purecon,puretitle)
def checkexist(self):
if not self.puresedb.has_key(self.url_md5):
self.exist=True
else:
self.exist=False
return self.exist
def close(self):
self.pdb.close()
self.tdb.close()
self.serialdb.close()
self.puresedb.close()
self.pureinline.close()
self.purecontentcount.close()
class TextInsert(object):
def __init__(self):
self.getdicdb=0
self.dicword=[]
self.insertbuffer={} # For wpage Buffer
self.tempbuffer={} # For tempdb Buffer
self.content='' # pure page content without html target.
self.dicdir="dic/"
self.dbfile="database/word_database.db"
self.pstemmer=porterstemming.PorterStemmer()
self.utf8doc=db.DB()
self.utf8doc.open(self.dicdir+"utf-8doc.db", None, db.DB_HASH, db.DB_DIRTY_READ)
self.utf8anu=db.DB()
self.utf8anu.open(self.dicdir+"utf-8anu.db", None, db.DB_HASH, db.DB_DIRTY_READ)
self.wdbenv = db.DBEnv()
self.envflags= db.DB_THREAD | db.DB_INIT_MPOOL | db.DB_INIT_LOCK
self.wdbenv.set_mp_mmapsize(100*1024*1024)
self.wdbenv.set_cachesize(0,200*1024*1024,0)
self.homeDir='database/wpage/'
self.wdbenv.open(self.homeDir, self.envflags|db.DB_CREATE)
self.wpagedb=db.DB(self.wdbenv)
self.wpagedb.open('wpagedb.db', None, db.DB_HASH, db.DB_CREATE)
# DB Env
self.dbtype = db.DB_HASH
self.dbopenflags = db.DB_THREAD
self.envflags = db.DB_THREAD | db.DB_INIT_MPOOL | db.DB_INIT_LOCK
self.dbenv = db.DBEnv()
self.homeDir='database/world/'
self.dbenv.set_mp_mmapsize(50*1024*1024)
self.dbenv.set_cachesize(0,100*1024*1024,0)
self.dbenv.open(self.homeDir, self.envflags|db.DB_CREATE)
self.tempdb=db.DB(self.dbenv)
self.tempdb.open('tempwdb.db', mode=0660, dbtype=self.dbtype, flags=self.dbopenflags|db.DB_CREATE)
#self.dicdb=db.DB()
def opendicdb(self):
if self.getdicdb==1:
self.dicdb=self.utf8doc
elif self.getdicdb==2:
self.dicdb=self.utf8anu
def Stringloadcheck(self,UrlString):
return 1
def x3tracp(self,x3t):
a=contentline.lintoascii(x3t[0])
b=chr(x3t[1]-x3t[0])
return a+b
def anureload(self):
self.utf8anu.close()
self.utf8anu=db.DB()
self.utf8anu.open(self.dicdir+"utf-8anu.db", None, db.DB_HASH, db.DB_DIRTY_READ)
def tempwurl(self,querykey): # to create temp database befor into the world database
""" querykey is pureserial+contentprocess.lintoascii(seri) """
self.opendicdb()
sercheck={}
for sx in self.dicword:
if sx[1]==2:
x=self.pstemmer.stem(sx[0].lower(),0,len(sx[0])-1).encode("utf-8")
else:
x=sx[0].encode("utf-8")
if sercheck.has_key(x):
sercheck[x]+=1
else:
sercheck[x]=0
if self.dicdb.has_key(x) and sercheck[x]==0:
dicdbmd5=hashlib.md5(x).hexdigest()
if self.tempbuffer.has_key(dicdbmd5):
self.tempbuffer[dicdbmd5]=self.tempbuffer[dicdbmd5]+querykey
else:
if self.tempdb.has_key(dicdbmd5):
diclinklist=zlib.decompress(self.tempdb.get(dicdbmd5))
self.tempbuffer[dicdbmd5]=diclinklist+querykey
#dbutils.DeadlockWrap(self.tempdb.put, dicdbmd5, diclinklist+querykey,max_retries=12)
else:
self.tempbuffer[dicdbmd5]=querykey
#dbutils.DeadlockWrap(self.tempdb.put, dicdbmd5, querykey,max_retries=12)
# total size will be 6 bytes querykey + 1 bytes wordcount + wordcount * 3 bytes position.
if self.dicdb.has_key(x) and (sx[2][1]-sx[2][0])<255:
dicdbmd5=hashlib.md5(x).hexdigest()
if self.insertbuffer.has_key(dicdbmd5+querykey):
self.insertbuffer[dicdbmd5+querykey]=self.insertbuffer[dicdbmd5+querykey]+self.x3tracp(sx[2])
else:
self.insertbuffer[dicdbmd5+querykey]=self.x3tracp(sx[2])
def sync_wpage(self):
winsertdata={}
for dix in self.insertbuffer.keys():
if (len(self.insertbuffer[dix])//3-1)>255: # I do think this word may useless, if there are so many.
self.insertbuffer[dix]=self.insertbuffer[dix][0:255*3]
chrsize=chr(len(self.insertbuffer[dix])//3-1) # start from 0.
if winsertdata.has_key(dix[0:32]):
winsertdata[dix[0:32]]=winsertdata[dix[0:32]]+dix[-6:]+chrsize+self.insertbuffer[dix]
else:
winsertdata[dix[0:32]]=dix[-6:]+chrsize+self.insertbuffer[dix]
self.insertbuffer={} # reset this value
for ik in winsertdata.keys():
if self.wpagedb.has_key(ik):
swprice=zlib.decompress(self.wpagedb.get(ik))
compressedik=zlib.compress(swprice+winsertdata[ik])
dbutils.DeadlockWrap(self.wpagedb.put, ik, compressedik, max_retries=12)
else:
compressedik=zlib.compress(winsertdata[ik])
dbutils.DeadlockWrap(self.wpagedb.put, ik, compressedik, max_retries=12)
winsertdata={} # release memory.
for itd in self.tempbuffer.keys():
dbutils.DeadlockWrap(self.tempdb.put, itd, zlib.compress(self.tempbuffer[itd]), max_retries=12)
self.tempbuffer={}
def closedicdb(self):
# self.dicdb.close()
self.tempdb.sync()
self.wpagedb.sync()
self.tempdb.close()
self.wpagedb.close()