96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
###################################################################
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# Copyright (c) 2016 by TAOS Technologies, Inc.
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# All rights reserved.
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#
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# This file is proprietary and confidential to TAOS Technologies.
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# No part of this file may be reproduced, stored, transmitted,
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# disclosed or used in any form or by any means other than as
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# expressly provided by the written permission from Jianhui Tao
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#
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###################################################################
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# -*- coding: utf-8 -*-
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import os
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import sys
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sys.path.insert(0, os.getcwd())
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from util.log import *
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from util.sql import *
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from util.dnodes import *
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import taos
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class TwoClients:
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def initConnection(self):
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self.host = "127.0.0.1"
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self.user = "root"
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self.password = "taosdata"
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self.config = "/home/xp/git/TDengine/sim/dnode1/cfg"
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def run(self):
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tdDnodes.init("")
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tdDnodes.setTestCluster(False)
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tdDnodes.setValgrind(False)
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tdDnodes.stopAll()
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tdDnodes.deploy(1)
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tdDnodes.start(1)
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# first client create a stable and insert data
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conn1 = taos.connect(self.host, self.user, self.password, self.config)
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cursor1 = conn1.cursor()
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cursor1.execute("drop database if exists db")
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cursor1.execute("create database db")
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cursor1.execute("use db")
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cursor1.execute("create table tb (ts timestamp, id int) tags(loc nchar(30))")
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cursor1.execute("insert into t0 using tb tags('beijing') values(now, 1)")
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# second client alter the table created by cleint
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conn2 = taos.connect(self.host, self.user, self.password, self.config)
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cursor2 = conn2.cursor()
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cursor2.execute("use db")
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cursor2.execute("alter table tb add column name nchar(30)")
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# first client should not be able to use the origin metadata
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tdSql.init(cursor1, True)
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tdSql.error("insert into t0 values(now, 2)")
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# first client should be able to insert data with udpated medadata
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tdSql.execute("insert into t0 values(now, 2, 'test')")
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tdSql.query("select * from tb")
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tdSql.checkRows(2)
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# second client drop the table
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cursor2.execute("drop table t0")
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cursor2.execute("create table t0 using tb tags('beijing')")
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tdSql.execute("insert into t0 values(now, 2, 'test')")
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tdSql.query("select * from tb")
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tdSql.checkRows(1)
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# error expected for two clients drop the same cloumn
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cursor2.execute("alter table tb drop column name")
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tdSql.error("alter table tb drop column name")
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cursor2.execute("alter table tb add column speed int")
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tdSql.error("alter table tb add column speed int")
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tdSql.execute("alter table tb add column size int")
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tdSql.query("describe tb")
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tdSql.checkRows(5)
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tdSql.checkData(0, 0, "ts")
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tdSql.checkData(1, 0, "id")
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tdSql.checkData(2, 0, "speed")
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tdSql.checkData(3, 0, "size")
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tdSql.checkData(4, 0, "loc")
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cursor1.close()
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cursor2.close()
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conn1.close()
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conn2.close()
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clients = TwoClients()
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clients.initConnection()
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clients.run() |