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databasecmp.py
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databasecmp.py
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#encoding:utf-8
'''
Created on 2017年12月13日
@author: nifx
需要安装的包
python -m pip install cx_Oracle --upgrade
pip install xlrd
pip install xlwt
pip install xlutils
pip list
pip install pymysql
python通过cx_Oracle模块连接Oracle时,一定要注意保证三者(python,cx_Oracle,Oracle客户端)版本
'''
import xlrd
import xlwt
import pymysql as msql
import gc
import cx_Oracle as oracle # 这边显示红色是正常的
DATABASETYPE = 0
TABLENAME = 1
PRIMARYKEY = 2
TABLEDBTYPE = 3 # 主库,分库,还是唯一库出数据
CONDITIONWHRE = 4
TABLESHEET = "table"
DATABASESHEET = "database"
DBCONNECT = "CONNECT"
DBCURSOR = "CURSOR"
IPADDR = "ipaddr"
DBNAME = "dbname"
DBNAMETYPE = "dbnametype"
DBUSERNAME = "dbusername"
DBPASSWD = "dbpasswd"
dbcmpname1="mysql1"
dbcmpname2="mysql2" # 该条上面记录了要对比的表
dbcntinfo = {}
dbinfo = {}
tableinfo = {}
'''
作用:获取本地的数据库连接
{DBCONNECT:sqlcnt,DBCURSOR:sqlcur}
'''
def getMysqlConnect(curdbcntinfo):
curcntinfo = {}
# print("getMysqlConnect:(%s,%s,%s,%s)"%(curdbcntinfo[IPADDR],curdbcntinfo[DBUSERNAME],curdbcntinfo[DBPASSWD],curdbcntinfo[DBNAME]))
try:
msqlcon=msql.connect(host=curdbcntinfo[IPADDR],
user=curdbcntinfo[DBUSERNAME],
password=curdbcntinfo[DBPASSWD],
db=curdbcntinfo[DBNAME],
port=3306,
charset='gb2312')
except Exception as e:
print(e.message)
msqlcursor = msqlcon.cursor()
curcntinfo[DBCONNECT]=msqlcon
curcntinfo[DBCURSOR]=msqlcursor
return curcntinfo
'''
{DBCONNECT:sqlcnt,DBCURSOR:sqlcur}
oracle的IPADDR是net manager上面配置的监听
'''
def getOracleConnect(curdbcntinfo):
curcntinfo = {}
cnttmp = curdbcntinfo[DBUSERNAME]+"/"+curdbcntinfo[DBPASSWD]+"@"+curdbcntinfo[IPADDR]
oraclecon=oracle.connect(cnttmp)
oraclecur=oraclecon.cursor()
curcntinfo[DBCONNECT]=oraclecon
curcntinfo[DBCURSOR]=oraclecur
return curcntinfo
def getdbconnect(dbtype, dbcntinfo):
if dbtype == "mysql" :
coninfo = getMysqlConnect(dbcntinfo)
elif dbtype == "oracle" :
coninfo = getOracleConnect(dbcntinfo)
return coninfo
'''
作用:关闭数据库连接,与getMysqlConnect成对使用
'''
def closeDBConnect(curcursor, connection):
curcursor.close()
connection.close()
def closedbinfo():
global dbcntinfo
for dbcmpnametype in dbcntinfo :
dbcntlist = dbcntinfo[dbcmpnametype]
for dbcnttmp in dbcntlist :
closeDBConnect(dbcnttmp[2][DBCURSOR],dbcnttmp[2][DBCONNECT])
'''
作用:sql语句执行
'''
def execSelectSql(curcursor,strsql):
curcursor.execute(strsql)
results=curcursor.fetchall()
return results
'''
以主键作为hashkey
{hashkey1:[(),(),...], hashkey2:[(),(),...]}
'''
def getdbselectresult(selectsql, dbdisttype, cntinfo,primarytblkey):
tblrltdict= {}
prykeyhashset = set()
prykeylen = len(primarytblkey.split(','))
for cnttmp in cntinfo :
curdbdisttype = cnttmp[0]
if dbdisttype != curdbdisttype :
continue
curcntinfo = cnttmp[2]
curresultinfo = execSelectSql(curcntinfo[DBCURSOR],selectsql)
# if curdbtype == "mysql" :
# curresultinfo = execSelectMysql(curcntinfo[DBCURSOR],selectsql)
# elif curdbtype == "oracle" :
# curresultinfo = execSelectOracle(curcntinfo,selectsql)
### 根据主键来生成hash的字典
print("getdbselectresult")
for rltinfo in curresultinfo :
print(rltinfo)
prykeystr = "".join(tuple(rltinfo[:prykeylen]))
hastprykey = hash(prykeystr)
prykeyhashset.add(hastprykey)
if hastprykey in tblrltdict :
rltinfolist = tblrltdict[hastprykey]
rltinfolist.append(rltinfo)
else :
rltinfolist = []
rltinfolist.append(rltinfo)
tblrltdict[hastprykey] = rltinfolist
return tblrltdict,prykeyhashset
'''
根据数据库比对类型名称来获取对应的连接
[[分库主库,数据库类型, 数据库连接],...]
'''
def getdbtmpcntinfo(dbcmpname, dbinfo):
print("getdbtmpcntinfo:"+dbcmpname)
dbcnttmplist = []
dblist = dbinfo[dbcmpname]
for varlist in dblist[1:] :
dbtmpcntinfo = getdbconnect(dblist[0],varlist)
dbcntlist = [varlist[DBNAMETYPE],dblist[0], dbtmpcntinfo]
dbcnttmplist.append(dbcntlist)
return dbcnttmplist
'''
dbcntinfo {比对数据库类型名称:[[分库主库,数据库类型(mysql/oracle), 数据库连接],...]}
'''
def getdbcntinfo():
global dbinfo,tableinfo,dbcntinfo
global dbcmpname1,dbcmpname2
dbcntinfotmp = getdbtmpcntinfo(dbcmpname1, dbinfo)
dbcntinfo[dbcmpname1] = dbcntinfotmp
dbcntinfotmp = getdbtmpcntinfo(dbcmpname2, dbinfo)
dbcntinfo[dbcmpname2] = dbcntinfotmp
def getselectsql(tblname,tblvalue):
### select 语句的字段
sltsql = ','.join(tblvalue[4])
### from 语句
fromsql = " from "+tblname
### where
wheresql = ""
if len(tblvalue[3]) != 0 :
wheresql = " where " + tblvalue[3]
### order by
# ordbysql = "order by " + tblvalue[1]
sltsql = "select " + tblvalue[1] + "," + sltsql + fromsql + wheresql
print(sltsql)
return sltsql
'''
把出的值都改为字符串
'''
def getstrvar(dbtype, varstr):
chgvarstr = ""
if varstr[-1:] != ")" :
if "c_" == varstr[:2] :
chgvarstr = varstr
else :
if dbtype == "mysql" :
chgvarstr = "concat("+varstr+")"
elif dbtype == "oracle" :
chgvarstr = "to_char("+varstr+")"
else :
leftkuohaopos = varstr.find('(')
defaultvalue = varstr[leftkuohaopos+1:-1] # 取默认值
chgvarstrtmp = varstr[:leftkuohaopos]
if "c_" == varstr[:2] :
chgvarstr1 = ("case when vars is null then default"
" when vars = '' then default "
" when vars = ' ' then default "
" else vars end")
else :
if dbtype == "mysql" :
chgvarstr1 = ("case when vars is null then default"
" when vars = '' then default "
" when vars = ' ' then default "
" else concat(vars) end")
elif dbtype == "oracle" :
chgvarstr1 = ("case when vars is null then default"
" when vars = '' then default "
" when vars = ' ' then default "
" else to_char(vars) end")
chgvarstr2 = chgvarstr1.replace("vars", chgvarstrtmp)
chgvarstr = chgvarstr2.replace("default", defaultvalue)
return chgvarstr
'''
获取某表的值
'''
def getselectinfo(tblname,tablevalue,cntlist):
stlsql = getselectsql(tblname,tablevalue)
(resulttable,prykeyhashkey) = getdbselectresult(stlsql,tablevalue[2],cntlist,tablevalue[1])
return resulttable,prykeyhashkey
'''
有相同hash的值的数据进行比较
'''
def cmpoldandnewtableinfo(comuseset, oldtblinfo,oldprykey, newtblinfo, newprykey):
diffset = set()
oldprykeylen = len(oldprykey.split(','))
newprykeylen = len(newprykey.split(','))
for pykhashkey in comuseset :
oldlist = oldtblinfo[pykhashkey]
newlist = newtblinfo[pykhashkey]
### 暂时认为每个primarykey对应的hash值都是不同的。
### 查找主键相同的项,然后去除主键后做比较
oldtuple = oldlist[0]
curoldprykey = "".join(tuple(oldtuple[:oldprykeylen]))
oldtuplestr = "".join(tuple(oldtuple[oldprykeylen:]))
newtuple = newlist[0]
curnewprykey = "".join(tuple(newtuple[:newprykeylen]))
newtuplestr = "".join(tuple(newtuple[newprykeylen:]))
if oldtuplestr != newtuplestr :
diffset.add(pykhashkey)
# diffset.set([pykhashkey,curoldprykey,curnewprykey])
# for oldtuple in oldlist :
# curoldprykey = "".join(tuple(oldtuple[:oldprykeylen]))
# for newtuple in newlist :
# curnewprykey = "".join(tuple(newtuple[:newprykeylen]))
# if curoldprykey == curnewprykey :
# oldtuplestr = "".join(tuple(oldtuple[oldprykeylen:]))
# newtuplestr = "".join(tuple(newtuple[newprykeylen:]))
# if oldtuplestr != newtuplestr :
# diffset.set([pykhashkey,curoldprykey])
# else :
# useset.set([pykhashkey,curoldprykey])
return diffset
'''
比对两张表的条数是否一致
'''
def gettablediff():
global tableinfo,dbcntinfo
global dbcmpname1,dbcmpname2
newtabledict = tableinfo[dbcmpname2]
oldtabledict = tableinfo[dbcmpname1]
newcntlist = dbcntinfo[dbcmpname2]
oldcntlist = dbcntinfo[dbcmpname1]
for tablename in newtabledict :
oldmoreset = set()
newmoreset = set()
useset = set()
newtablevalue = newtabledict[tablename]
oldcmptable = newtablevalue[0]
oldtablevalue = oldtabledict[oldcmptable]
(newslttableinfo, newprykeyhashset) = getselectinfo(tablename,newtablevalue,newcntlist)
(oldslttableinfo, oldprykeyhashset) = getselectinfo(oldcmptable,oldtablevalue,oldcntlist)
useset = newprykeyhashset&oldprykeyhashset ## 交集
diffset = cmpoldandnewtableinfo(useset,oldslttableinfo,oldtablevalue[1], newslttableinfo,newtablevalue[1])
oldmoreset = oldprykeyhashset - newprykeyhashset
newmoreset = newprykeyhashset - oldprykeyhashset
writetalbeinfo2excel(tablename,dbcmpname1, oldcmptable, oldmoreset, oldslttableinfo)
writetalbeinfo2excel(tablename,dbcmpname2, tablename, newmoreset, newslttableinfo)
writedifftalbeinfo2excel(tablename,diffset, dbcmpname1,oldcmptable,oldslttableinfo, dbcmpname2,tablename,newslttableinfo)
del newslttableinfo,oldslttableinfo
del oldmoreset,newmoreset,diffset,useset
gc.collect
'''
获取数据类型信息
{比对数据库名称(dbcmpname):[数据库类型,[{ip地址:ipaddr,数据库名称:dbname,数据库名称类型(主库/分库):dbnametype,用户名:username,密码:passwd},...]}
IPADDR = "ipaddr"
DBNAME = "dbname"
DBNAMETYPE = "dbnametype"
DBUSERNAME = "dbusername"
DBPASSWD = "dbpasswd"
'''
def getdbinfo(dbsheet):
global dbinfo
for rownum in range(1, dbsheet.nrows) :
rowstrings = dbsheet.row_values(rownum)
dbcmpname = rowstrings[0]
if len(dbcmpname.strip()) == 0 :
break
dbtype = rowstrings[1]
dbipaddr = rowstrings[2]
dbname = rowstrings[3]
dbnametype = int(rowstrings[4])
dbusername = rowstrings[5]
dbpasswd = rowstrings[6]
dbdictnew = {IPADDR:dbipaddr,DBNAME:dbname,DBNAMETYPE:dbnametype,DBUSERNAME:dbusername,DBPASSWD:dbpasswd}
if dbcmpname in dbinfo :
dblist = dbinfo[dbcmpname]
dblist.append(dbdictnew)
else :
dblist = [dbtype]
dblist.append(dbdictnew)
dbinfo[dbcmpname] = dblist
print("getdbinfo")
print(dbinfo)
'''
返回的数据格式是
{数据库比对名称:{表名:[比对表,主键,主库分库,where条件,[字段列表]],...}}
'''
def gettableinfo(tablesheet):
global tableinfo,dbinfo
for rownum in range(1, tablesheet.nrows) :
rowstrings = tablesheet.row_values(rownum)
databasetype=rowstrings[DATABASETYPE]
# print("The databasetype %s"%(databasetype))
tablename=rowstrings[TABLENAME]
if rownum&1 != 0 :
cmptablename = tablename
# print("The tablename %s"%(tablename))
primarykey=rowstrings[PRIMARYKEY]
# print("The primary key %s"%(primarykey))
tabledbtype=int(rowstrings[TABLEDBTYPE])
# print("主分库还是唯一%d"%(tabledbtype))
conwhere=rowstrings[CONDITIONWHRE]
# print("The where %s"%(conwhere))
### mysql/oracle
dbtype = dbinfo[databasetype][0]
varlist = []
for colnum in range(CONDITIONWHRE+1, tablesheet.ncols) :
varstr = tablesheet.cell(rownum,colnum).value.strip()
if len(varstr) == 0 :
break
chgvarstr = getstrvar(dbtype,varstr)
varlist.append(chgvarstr)
if rownum&1 != 0 :
tallist = ["",primarykey,tabledbtype,conwhere,varlist]
else :
tallist = [cmptablename,primarykey,tabledbtype,conwhere,varlist]
# print("tallist")
# print(tallist)
tavardict = {}
if databasetype in tableinfo :
# print("true"+databasetype)
tavardict = tableinfo[databasetype]
tavardict[tablename] = tallist
else :
# print("false"+databasetype)
tavardict[tablename] = tallist
tableinfo[databasetype] = tavardict
print("dddddtabledict")
print(tableinfo)
'''
读取excel里面的数据并进行存储
'''
def tablecmp(xlsfilename):
'''Read tablecmp Excel with xlrd'''
#file
TC_workbook=xlrd.open_workbook(xlsfilename)
#sheet
all_sheets_list=TC_workbook.sheet_names()
# print("All sheets name in File:",all_sheets_list)
for sheetstr in all_sheets_list :
if TABLESHEET in sheetstr :
tablesheet = sheetstr
if DATABASESHEET in sheetstr :
databasesheet = sheetstr
dbsheet=TC_workbook.sheet_by_name(databasesheet)
getdbinfo(dbsheet)
tablecmp=TC_workbook.sheet_by_name(tablesheet)
gettableinfo(tablecmp)
'''
以表名为excel的名称,数据库比对类型作为sheet,第一行为主键和要比对的字段
第二行开始是具体的值
'''
def writetalbeinfo2excel(excelfile, dbcmpname, cmptablename, tablehashset, slttableinfo):
'''Write content to excelfile.xlsx'''
global tableinfo
tabledict = tableinfo[dbcmpname]
tablelist = tabledict[cmptablename]
primarykey = tablelist[1]
varlist = tablelist[4]
new_workbook=xlwt.Workbook(encoding = 'ascii')
ws= new_workbook.add_sheet(dbcmpname)
### 写入第一行
rownum = 0
primarykeylist = primarykey.split(',')
primarykeylistlen = len(primarykeylist)
for prykeycol in range(0,primarykeylistlen) :
ws.write(rownum,prykeycol, primarykeylist[prykeycol])
varlistlen = len(varlist)
for varcol in range(primarykeylistlen,primarykeylistlen+varlistlen) :
ws.write(rownum,varcol, varlist[varcol-primarykeylistlen])
### 写入第二行之后的数据,这个是一定要考虑一个hash下面是否对应多个主键了。
### {hashkey1:[(),(),...], hashkey2:[(),(),...]}
tuplelen = primarykeylistlen+varlistlen
rownum = rownum +1
for tblhashtmp in tablehashset :
slttbllist = slttableinfo[tblhashtmp]
for curtupletmp in slttbllist :
for varcol in range(0,tuplelen) :
ws.write(rownum,varcol, curtupletmp[varcol])
rownum = rownum +1
### 保存文件
excelfile = excelfile+"_"+dbcmpname+".xls"
new_workbook.save(excelfile)
'''
以表名为excel的名称,数据库比对类型作为sheet,第一行为主键和要比对的字段
第二行开始是具体的值
'''
def writedifftalbeinfo2excel(excelfile,tablediffhashset,olddbcmpname,oldtablename,oldslttableinfo, newdbcmpname,newtablename,newslttableinfo) :
'''Write content to excelfile.xlsx'''
global tableinfo
new_workbook=xlwt.Workbook(encoding = 'ascii')
ws= new_workbook.add_sheet(olddbcmpname+"_"+newdbcmpname)
oldpattern = xlwt.Pattern()
oldpattern.pattern = xlwt.Pattern.SOLID_PATTERN
oldpattern.pattern_fore_colour = 2
oldcell_style = xlwt.XFStyle()
oldcell_style.pattern = oldpattern
newpattern = xlwt.Pattern()
newpattern.pattern = xlwt.Pattern.SOLID_PATTERN
newpattern.pattern_fore_colour = 3
newcell_style = xlwt.XFStyle()
newcell_style.pattern = newpattern
newtablelist = tableinfo[newdbcmpname][newtablename]
primarykey = newtablelist[1]
varlist = newtablelist[4]
### 写入第一行
rownum = 0
ws.write(rownum,0, "比对数据库类型")
primarykeylist = primarykey.split(',')
primarykeylistlen = len(primarykeylist)
for prykeycol in range(1,primarykeylistlen+1) :
ws.write(rownum,prykeycol, primarykeylist[prykeycol-1])
varlistlen = len(varlist)
for varcol in range(primarykeylistlen+1,primarykeylistlen+varlistlen+1) :
ws.write(rownum,varcol, varlist[varcol-primarykeylistlen-1])
### 写入第二行之后的数据,这个是一定要考虑一个hash下面是否对应多个主键了。
### {hashkey1:[(),(),...], hashkey2:[(),(),...]}
tuplelen = primarykeylistlen+varlistlen
rownum = rownum +1
for tblhashtmp in tablediffhashset :
slttbllist = oldslttableinfo[tblhashtmp]
for curtupletmp in slttbllist :
ws.write(rownum,0, olddbcmpname,oldcell_style)
for varcol in range(1,tuplelen+1) :
ws.write(rownum,varcol, curtupletmp[varcol-1],oldcell_style)
rownum = rownum +1
slttbllist = newslttableinfo[tblhashtmp]
for curtupletmp in slttbllist :
ws.write(rownum,0, newdbcmpname,newcell_style)
for varcol in range(1,tuplelen+1) :
ws.write(rownum,varcol, curtupletmp[varcol-1],newcell_style)
rownum = rownum +1
excelfile = excelfile+"_"+olddbcmpname+"_"+newdbcmpname+".xls"
new_workbook.save(excelfile)
if __name__ == '__main__':
tablecmp("tablecmp.xlsx")
getdbcntinfo()
gettablediff()
closedbinfo()