146 lines
4.2 KiB
Python
146 lines
4.2 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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from util.log import *
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from util.cases import *
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from util.sql import *
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from util.common import *
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from util.sqlset import *
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import random
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import time
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import traceback
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class TDTestCase:
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def init(self, conn, logSql, replicaVar=1):
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self.replicaVar = int(replicaVar)
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tdLog.debug("start to execute %s" % __file__)
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tdSql.init(conn.cursor(), True)
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# describe table
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def describe_table(self, tbname):
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columns = []
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tags = []
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sql = f"describe {tbname}"
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row_cnt = tdSql.query(sql)
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for i in range(0, row_cnt):
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col_name = tdSql.queryResult[i][0]
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type_name = tdSql.queryResult[i][3]
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if type_name == "TAG":
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tags.append(col_name)
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else:
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columns.append(col_name)
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return columns,tags
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# show tables
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def show_tables(self):
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sql = "show tables;"
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row_cnt = tdSql.query(sql)
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tables = []
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for i in range(0, row_cnt):
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tb_name = tdSql.queryResult[i][0]
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tables.append(tb_name)
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# execute sql
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def execute(self, sql):
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try:
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tdSql.execute(sql, 3)
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tdLog.info(f" exec ok. {sql}")
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except:
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tdLog.info(f" exe failed. {sql}")
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traceback.print_exc()
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# query
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def query_table(self, columns, tags):
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if len(columns) < 5 :
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return
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if len(tags) < 5:
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return
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sel_cols = random.sample(columns, random.randint(1,int(len(columns)-1)))
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sel_tags = random.sample(tags, random.randint(1, int(len(tags)-1)))
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field_cols = ",".join(sel_cols)
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field_tags = ",".join(sel_tags)
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#sql = f"select {field_cols},{field_tags} from meters ;"
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sql = f"select {field_cols},{field_tags} from meters"
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try:
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tdLog.info( " query sql:" + sql)
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tdSql.query("select * from meters limit 1")
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except:
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tdLog.info( " query failed :" + sql)
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traceback.print_exc()
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# change table schema
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def drop_table(self, change_cnt):
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# init
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tables = self.show_tables()
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for i in range(change_cnt):
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col_idx = random.randint(0, ncol - 1)
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tag_idx = random.randint(0, ntag - 1)
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cols = list(self.column_dict.keys())
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tags = list(self.tag_dict.keys())
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# column
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key = cols[col_idx]
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value = self.column_dict[key]
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sql = f'alter table meters drop column {key}'
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self.execute(sql)
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sql = f'alter table meters add column {key} {value}'
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self.execute(sql)
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# column
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key = tags[col_idx]
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value = self.tag_dict[key]
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sql = f'alter table meters drop tag {key}'
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self.execute(sql)
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sql = f'alter table meters add tag {key} {value}'
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self.execute(sql)
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# drop and rename
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if i % 5 == 0:
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# update columns
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#columns,tags = self.describe_table("meters")
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tdLog.info(f" ======= describe table column count = {len(cols)} tags= {len(tags)}======")
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self.query_table(cols, tags)
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# run
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def run(self):
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# seed
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random.seed(int(time.time()))
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self.dbname = "schema_change"
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# switch db
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tdSql.execute(f"use {self.dbname};")
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# change meters
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self.drop_table(1000000)
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# stop
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def stop(self):
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tdSql.close()
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tdLog.success("%s successfully executed" % __file__)
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tdCases.addWindows(__file__, TDTestCase())
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tdCases.addLinux(__file__, TDTestCase()) |