add multi-threading test case

[TD-450]

tests/pytest/random-test/random-test-multi-threading.py

+###################################################################
+#           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 random
+import threading
+
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+
+current_tb = ""
+last_tb = ""
+written = 0
+
+
+class Test (threading.Thread):
+    def __init__(self, threadId, name, sleepTime):
+        threading.Thread.__init__(self)
+        self.threadId = threadId
+        self.name = name
+        self.sleepTime = sleepTime
+
+        self.threadLock = threading.Lock()
+
+    def create_table(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("create a table")
+        current_tb = "tb%d" % int(round(time.time() * 1000))
+        tdLog.info("current table %s" % current_tb)
+
+        if (current_tb == last_tb):
+            return
+        else:
+            tdSql.execute(
+                'create table %s (ts timestamp, speed int)' %
+                current_tb)
+            last_tb = current_tb
+            written = 0
+
+    def insert_data(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("will insert data to table")
+        if (current_tb == ""):
+            tdLog.info("no table, create first")
+            self.create_table()
+
+        tdLog.info("insert data to table")
+        for i in range(0, 10):
+            self.threadLock.acquire()
+            insertRows = 1000
+            tdLog.info("insert %d rows to %s" % (insertRows, current_tb))
+
+            for j in range(0, insertRows):
+                ret = tdSql.execute(
+                    'insert into %s values (now + %dm, %d)' %
+                    (current_tb, j, j))
+                written = written + 1
+            self.threadLock.release()
+
+    def query_data(self):
+        global current_tb
+        global last_tb
+        global written
+
+        if (written > 0):
+            tdLog.info("query data from table")
+            tdSql.query("select * from %s" % last_tb)
+            tdSql.checkRows(written)
+
+    def create_stable(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("create a super table")
+
+    def restart_database(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("restart databae")
+        tdDnodes.stop(1)
+        tdDnodes.start(1)
+        tdLog.sleep(5)
+
+    def force_restart(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("force restart database")
+        tdDnodes.forcestop(1)
+        tdDnodes.start(1)
+        tdLog.sleep(5)
+
+    def drop_table(self):
+        global current_tb
+        global last_tb
+        global written
+
+        for i in range(0, 10):
+            self.threadLock.acquire()
+
+            tdLog.info("current_tb %s" % current_tb)
+
+            if (current_tb != ""):
+                tdLog.info("drop current tb %s" % current_tb)
+                tdSql.execute("drop table %s" % current_tb)
+                current_tb = ""
+                last_tb = ""
+                written = 0
+            tdLog.sleep(self.sleepTime)
+            self.threadLock.release()
+
+    def reset_query_cache(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("reset query cache")
+        tdSql.execute("reset query cache")
+        tdLog.sleep(1)
+
+    def reset_database(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("reset database")
+        tdDnodes.forcestop(1)
+        tdDnodes.deploy(1)
+        current_tb = ""
+        last_tb = ""
+        written = 0
+        tdDnodes.start(1)
+        tdSql.prepare()
+
+    def delete_datafiles(self):
+        global current_tb
+        global last_tb
+        global written
+
+        tdLog.info("delete data files")
+        dnodesDir = tdDnodes.getDnodesRootDir()
+        dataDir = dnodesDir + '/dnode1/*'
+        deleteCmd = 'rm -rf %s' % dataDir
+        os.system(deleteCmd)
+
+        current_tb = ""
+        last_tb = ""
+        written = 0
+        tdDnodes.start(1)
+        tdSql.prepare()
+
+    def run(self):
+        switch = {
+            1: self.create_table,
+            2: self.insert_data,
+            3: self.query_data,
+            4: self.create_stable,
+            5: self.restart_database,
+            6: self.force_restart,
+            7: self.drop_table,
+            8: self.reset_query_cache,
+            9: self.reset_database,
+            10: self.delete_datafiles,
+        }
+
+        switch.get(self.threadId, lambda: "ERROR")()
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def run(self):
+        tdSql.prepare()
+
+        test1 = Test(2, "insert_data", 1)
+        test2 = Test(7, "drop_table", 2)
+
+        test1.start()
+        test2.start()
+        test1.join()
+        test2.join()
+
+        tdLog.info("end of test")
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())