84 lines
2.6 KiB
Python
84 lines
2.6 KiB
Python
###################################################################
|
|
# Copyright (c) 2016 by TAOS Technologies, Inc.
|
|
# All rights reserved.
|
|
#
|
|
# This file is proprietary and confidential to TAOS Technologies.
|
|
# No part of this file may be reproduced, stored, transmitted,
|
|
# disclosed or used in any form or by any means other than as
|
|
# expressly provided by the written permission from Jianhui Tao
|
|
#
|
|
###################################################################
|
|
|
|
# -*- coding: utf-8 -*-
|
|
|
|
import sys
|
|
import taos
|
|
import time
|
|
from datetime import datetime
|
|
import csv
|
|
|
|
|
|
class DBWriteNonStop:
|
|
def __init__(self):
|
|
self.host = "127.0.0.1"
|
|
self.user = "root"
|
|
self.password = "taosdata"
|
|
self.config = "/etc/taos"
|
|
|
|
def connectDB(self):
|
|
self.conn = taos.connect(
|
|
self.host,
|
|
self.user,
|
|
self.password,
|
|
self.config)
|
|
self.cursor = self.conn.cursor()
|
|
|
|
def createTable(self):
|
|
self.cursor.execute("drop database if exists dbwrite")
|
|
self.cursor.execute("create database dbwrite")
|
|
self.cursor.execute("use dbwrite")
|
|
self.cursor.execute(
|
|
"create table if not exists st (ts timestamp, value nchar(50), speed int) tags(dev nchar(50))")
|
|
|
|
def writeDataToCSVFile(self, data, duration):
|
|
csvFile = open('/root/csvFile.csv', 'a', newline='')
|
|
writer = csv.writer(csvFile)
|
|
writer.writerow([data[0][0], data[0][1], data[0][2],
|
|
data[0][3], data[0][4], data[0][5], duration])
|
|
csvFile.close()
|
|
|
|
def insertData(self):
|
|
print("===============inserting data===============")
|
|
i = 1
|
|
startTime = datetime.now()
|
|
while True:
|
|
self.cursor.execute(
|
|
"insert into st1 using st tags('dev_001') values(now, 'taosdata%d', %d)" %
|
|
(i %
|
|
10000,
|
|
i %
|
|
100000))
|
|
i += 1
|
|
i = i % 32000000
|
|
endTime = datetime.now()
|
|
if (endTime - startTime).seconds >= 3600 * 1:
|
|
startTime = endTime
|
|
start = datetime.now()
|
|
self.cursor.execute(
|
|
"select first(ts), last(ts), min(speed), max(speed), avg(speed), count(*) from st")
|
|
data = self.cursor.fetchall()
|
|
end = datetime.now()
|
|
self.writeDataToCSVFile(data, (end - start).seconds)
|
|
time.sleep(.001)
|
|
|
|
def closeConn(self):
|
|
self.cursor.close()
|
|
self.conn.close()
|
|
|
|
|
|
test = DBWriteNonStop()
|
|
test.connectDB()
|
|
test.createTable()
|
|
test.insertData()
|
|
test.closeConn()
|