xxq250
/
homework-jianmu
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity
homework-jianmu/tests/pytest/crash_gen.py

2305 lines
85 KiB
Python
Executable File
Raw Blame History

# -----!/usr/bin/python3.7
###################################################################
# 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 -*-
# For type hinting before definition, ref:
# https://stackoverflow.com/questions/33533148/how-do-i-specify-that-the-return-type-of-a-method-is-the-same-as-the-class-itsel
from __future__ import annotations
import taos
import crash_gen
from util.sql import *
from util.cases import *
from util.dnodes import *
from util.log import *
from queue import Queue, Empty
from typing import IO
from typing import Set
from typing import Dict
from typing import List
from requests.auth import HTTPBasicAuth
import textwrap
import datetime
import logging
import time
import random
import threading
import requests
import copy
import argparse
import getopt
import sys
import os
import io
import signal
import traceback
# Require Python 3
if sys.version_info[0] < 3:
raise Exception("Must be using Python 3")
# Global variables, tried to keep a small number.
# Command-line/Environment Configurations, will set a bit later
# ConfigNameSpace = argparse.Namespace
gConfig = argparse.Namespace() # Dummy value, will be replaced later
logger = None
def runThread(wt: WorkerThread):
wt.run()
class CrashGenError(Exception):
def __init__(self, msg=None, errno=None):
self.msg = msg
self.errno = errno
def __str__(self):
return self.msg
class WorkerThread:
def __init__(self, pool: ThreadPool, tid,
tc: ThreadCoordinator,
# te: TaskExecutor,
): # note: main thread context!
# self._curStep = -1
self._pool = pool
self._tid = tid
self._tc = tc # type: ThreadCoordinator
# self.threadIdent = threading.get_ident()
self._thread = threading.Thread(target=runThread, args=(self,))
self._stepGate = threading.Event()
# Let us have a DB connection of our own
if (gConfig.per_thread_db_connection): # type: ignore
# print("connector_type = {}".format(gConfig.connector_type))
self._dbConn = DbConn.createNative() if (
gConfig.connector_type == 'native') else DbConn.createRest()
self._dbInUse = False # if "use db" was executed already
def logDebug(self, msg):
logger.debug(" TRD[{}] {}".format(self._tid, msg))
def logInfo(self, msg):
logger.info(" TRD[{}] {}".format(self._tid, msg))
def dbInUse(self):
return self._dbInUse
def useDb(self):
if (not self._dbInUse):
self.execSql("use db")
self._dbInUse = True
def getTaskExecutor(self):
return self._tc.getTaskExecutor()
def start(self):
self._thread.start() # AFTER the thread is recorded
def run(self):
# initialization after thread starts, in the thread context
# self.isSleeping = False
logger.info("Starting to run thread: {}".format(self._tid))
if (gConfig.per_thread_db_connection): # type: ignore
logger.debug("Worker thread openning database connection")
self._dbConn.open()
self._doTaskLoop()
# clean up
if (gConfig.per_thread_db_connection): # type: ignore
self._dbConn.close()
def _doTaskLoop(self):
# while self._curStep < self._pool.maxSteps:
# tc = ThreadCoordinator(None)
while True:
tc = self._tc # Thread Coordinator, the overall master
tc.crossStepBarrier() # shared barrier first, INCLUDING the last one
logger.debug(
"[TRD] Worker thread [{}] exited barrier...".format(
self._tid))
self.crossStepGate() # then per-thread gate, after being tapped
logger.debug(
"[TRD] Worker thread [{}] exited step gate...".format(
self._tid))
if not self._tc.isRunning():
logger.debug(
"[TRD] Thread Coordinator not running any more, worker thread now stopping...")
break
# Fetch a task from the Thread Coordinator
logger.debug(
"[TRD] Worker thread [{}] about to fetch task".format(
self._tid))
task = tc.fetchTask()
# Execute such a task
logger.debug(
"[TRD] Worker thread [{}] about to execute task: {}".format(
self._tid, task.__class__.__name__))
task.execute(self)
tc.saveExecutedTask(task)
logger.debug(
"[TRD] Worker thread [{}] finished executing task".format(
self._tid))
self._dbInUse = False # there may be changes between steps
def verifyThreadSelf(self): # ensure we are called by this own thread
if (threading.get_ident() != self._thread.ident):
raise RuntimeError("Unexpectly called from other threads")
def verifyThreadMain(self): # ensure we are called by the main thread
if (threading.get_ident() != threading.main_thread().ident):
raise RuntimeError("Unexpectly called from other threads")
def verifyThreadAlive(self):
if (not self._thread.is_alive()):
raise RuntimeError("Unexpected dead thread")
# A gate is different from a barrier in that a thread needs to be "tapped"
def crossStepGate(self):
self.verifyThreadAlive()
self.verifyThreadSelf() # only allowed by ourselves
# Wait again at the "gate", waiting to be "tapped"
logger.debug(
"[TRD] Worker thread {} about to cross the step gate".format(
self._tid))
self._stepGate.wait()
self._stepGate.clear()
# self._curStep += 1 # off to a new step...
def tapStepGate(self): # give it a tap, release the thread waiting there
self.verifyThreadAlive()
self.verifyThreadMain() # only allowed for main thread
logger.debug("[TRD] Tapping worker thread {}".format(self._tid))
self._stepGate.set() # wake up!
time.sleep(0) # let the released thread run a bit
def execSql(self, sql): # TODO: expose DbConn directly
if (gConfig.per_thread_db_connection):
return self._dbConn.execute(sql)
else:
return self._tc.getDbManager().getDbConn().execute(sql)
def querySql(self, sql): # TODO: expose DbConn directly
if (gConfig.per_thread_db_connection):
return self._dbConn.query(sql)
else:
return self._tc.getDbManager().getDbConn().query(sql)
def getQueryResult(self):
if (gConfig.per_thread_db_connection):
return self._dbConn.getQueryResult()
else:
return self._tc.getDbManager().getDbConn().getQueryResult()
def getDbConn(self):
if (gConfig.per_thread_db_connection):
return self._dbConn
else:
return self._tc.getDbManager().getDbConn()
# def querySql(self, sql): # not "execute", since we are out side the DB context
# if ( gConfig.per_thread_db_connection ):
# return self._dbConn.query(sql)
# else:
# return self._tc.getDbState().getDbConn().query(sql)
# The coordinator of all worker threads, mostly running in main thread
class ThreadCoordinator:
def __init__(self, pool: ThreadPool, dbManager):
self._curStep = -1 # first step is 0
self._pool = pool
# self._wd = wd
self._te = None # prepare for every new step
self._dbManager = dbManager
self._executedTasks: List[Task] = [] # in a given step
self._lock = threading.RLock() # sync access for a few things
self._stepBarrier = threading.Barrier(
self._pool.numThreads + 1) # one barrier for all threads
self._execStats = ExecutionStats()
self._runStatus = MainExec.STATUS_RUNNING
def getTaskExecutor(self):
return self._te
def getDbManager(self) -> DbManager:
return self._dbManager
def crossStepBarrier(self):
self._stepBarrier.wait()
def requestToStop(self):
self._runStatus = MainExec.STATUS_STOPPING
self._execStats.registerFailure("User Interruption")
def run(self):
self._pool.createAndStartThreads(self)
# Coordinate all threads step by step
self._curStep = -1 # not started yet
maxSteps = gConfig.max_steps # type: ignore
self._execStats.startExec() # start the stop watch
transitionFailed = False
hasAbortedTask = False
while(self._curStep < maxSteps - 1 and
(not transitionFailed) and
(self._runStatus == MainExec.STATUS_RUNNING) and
(not hasAbortedTask)): # maxStep==10, last curStep should be 9
if not gConfig.debug:
# print this only if we are not in debug mode
print(".", end="", flush=True)
logger.debug("[TRD] Main thread going to sleep")
# Now main thread (that's us) is ready to enter a step
# let other threads go past the pool barrier, but wait at the
# thread gate
self.crossStepBarrier()
self._stepBarrier.reset() # Other worker threads should now be at the "gate"
# At this point, all threads should be pass the overall "barrier" and before the per-thread "gate"
# We use this period to do house keeping work, when all worker
# threads are QUIET.
hasAbortedTask = False
for task in self._executedTasks:
if task.isAborted():
print("Task aborted: {}".format(task))
hasAbortedTask = True
break
if hasAbortedTask: # do transition only if tasks are error free
self._execStats.registerFailure("Aborted Task Encountered")
else:
try:
sm = self._dbManager.getStateMachine()
logger.debug("[STT] starting transitions")
# at end of step, transiton the DB state
sm.transition(self._executedTasks)
logger.debug("[STT] transition ended")
# Due to limitation (or maybe not) of the Python library,
# we cannot share connections across threads
if sm.hasDatabase():
for t in self._pool.threadList:
logger.debug("[DB] use db for all worker threads")
t.useDb()
# t.execSql("use db") # main thread executing "use
# db" on behalf of every worker thread
except taos.error.ProgrammingError as err:
if (err.msg == 'network unavailable'): # broken DB connection
logger.info("DB connection broken, execution failed")
traceback.print_stack()
transitionFailed = True
self._te = None # Not running any more
self._execStats.registerFailure("Broken DB Connection")
# continue # don't do that, need to tap all threads at
# end, and maybe signal them to stop
else:
raise
# finally:
# pass
self.resetExecutedTasks() # clear the tasks after we are done
# Get ready for next step
logger.debug("<-- Step {} finished".format(self._curStep))
self._curStep += 1 # we are about to get into next step. TODO: race condition here!
# Now not all threads had time to go to sleep
logger.debug(
"\r\n\n--> Step {} starts with main thread waking up".format(self._curStep))
# A new TE for the new step
if not transitionFailed: # only if not failed
self._te = TaskExecutor(self._curStep)
logger.debug(
"[TRD] Main thread waking up at step {}, tapping worker threads".format(
self._curStep)) # Now not all threads had time to go to sleep
# Worker threads will wake up at this point, and each execute it's
# own task
self.tapAllThreads()
logger.debug("Main thread ready to finish up...")
if not transitionFailed: # only in regular situations
self.crossStepBarrier() # Cross it one last time, after all threads finish
self._stepBarrier.reset()
logger.debug("Main thread in exclusive zone...")
self._te = None # No more executor, time to end
logger.debug("Main thread tapping all threads one last time...")
self.tapAllThreads() # Let the threads run one last time
logger.debug("Main thread joining all threads")
self._pool.joinAll() # Get all threads to finish
logger.info("\nAll worker threads finished")
self._execStats.endExec()
def printStats(self):
self._execStats.printStats()
def isFailed(self):
return self._execStats.isFailed()
def getExecStats(self):
return self._execStats
def tapAllThreads(self): # in a deterministic manner
wakeSeq = []
for i in range(self._pool.numThreads): # generate a random sequence
if Dice.throw(2) == 1:
wakeSeq.append(i)
else:
wakeSeq.insert(0, i)
logger.debug(
"[TRD] Main thread waking up worker threads: {}".format(
str(wakeSeq)))
# TODO: set dice seed to a deterministic value
for i in wakeSeq:
# TODO: maybe a bit too deep?!
self._pool.threadList[i].tapStepGate()
time.sleep(0) # yield
def isRunning(self):
return self._te is not None
def fetchTask(self) -> Task:
if (not self.isRunning()): # no task
raise RuntimeError("Cannot fetch task when not running")
# return self._wd.pickTask()
# Alternatively, let's ask the DbState for the appropriate task
# dbState = self.getDbState()
# tasks = dbState.getTasksAtState() # TODO: create every time?
# nTasks = len(tasks)
# i = Dice.throw(nTasks)
# logger.debug(" (dice:{}/{}) ".format(i, nTasks))
# # return copy.copy(tasks[i]) # Needs a fresh copy, to save execution results, etc.
# return tasks[i].clone() # TODO: still necessary?
# pick a task type for current state
taskType = self.getDbManager().getStateMachine().pickTaskType()
return taskType(
self.getDbManager(),
self._execStats) # create a task from it
def resetExecutedTasks(self):
self._executedTasks = [] # should be under single thread
def saveExecutedTask(self, task):
with self._lock:
self._executedTasks.append(task)
# We define a class to run a number of threads in locking steps.
class ThreadPool:
def __init__(self, numThreads, maxSteps):
self.numThreads = numThreads
self.maxSteps = maxSteps
# Internal class variables
self.curStep = 0
self.threadList = [] # type: List[WorkerThread]
# starting to run all the threads, in locking steps
def createAndStartThreads(self, tc: ThreadCoordinator):
for tid in range(0, self.numThreads): # Create the threads
workerThread = WorkerThread(self, tid, tc)
self.threadList.append(workerThread)
workerThread.start() # start, but should block immediately before step 0
def joinAll(self):
for workerThread in self.threadList:
logger.debug("Joining thread...")
workerThread._thread.join()
# A queue of continguous POSITIVE integers, used by DbManager to generate continuous numbers
# for new table names
class LinearQueue():
def __init__(self):
self.firstIndex = 1 # 1st ever element
self.lastIndex = 0
self._lock = threading.RLock() # our functions may call each other
self.inUse = set() # the indexes that are in use right now
def toText(self):
return "[{}..{}], in use: {}".format(
self.firstIndex, self.lastIndex, self.inUse)
# Push (add new element, largest) to the tail, and mark it in use
def push(self):
with self._lock:
# if ( self.isEmpty() ):
# self.lastIndex = self.firstIndex
# return self.firstIndex
# Otherwise we have something
self.lastIndex += 1
self.allocate(self.lastIndex)
# self.inUse.add(self.lastIndex) # mark it in use immediately
return self.lastIndex
def pop(self):
with self._lock:
if (self.isEmpty()):
# raise RuntimeError("Cannot pop an empty queue")
return False # TODO: None?
index = self.firstIndex
if (index in self.inUse):
return False
self.firstIndex += 1
return index
def isEmpty(self):
return self.firstIndex > self.lastIndex
def popIfNotEmpty(self):
with self._lock:
if (self.isEmpty()):
return 0
return self.pop()
def allocate(self, i):
with self._lock:
# logger.debug("LQ allocating item {}".format(i))
if (i in self.inUse):
raise RuntimeError(
"Cannot re-use same index in queue: {}".format(i))
self.inUse.add(i)
def release(self, i):
with self._lock:
# logger.debug("LQ releasing item {}".format(i))
self.inUse.remove(i) # KeyError possible, TODO: why?
def size(self):
return self.lastIndex + 1 - self.firstIndex
def pickAndAllocate(self):
if (self.isEmpty()):
return None
with self._lock:
cnt = 0 # counting the interations
while True:
cnt += 1
if (cnt > self.size() * 10): # 10x iteration already
# raise RuntimeError("Failed to allocate LinearQueue element")
return None
ret = Dice.throwRange(self.firstIndex, self.lastIndex + 1)
if (ret not in self.inUse):
self.allocate(ret)
return ret
class DbConn:
TYPE_NATIVE = "native-c"
TYPE_REST = "rest-api"
TYPE_INVALID = "invalid"
@classmethod
def create(cls, connType):
if connType == cls.TYPE_NATIVE:
return DbConnNative()
elif connType == cls.TYPE_REST:
return DbConnRest()
else:
raise RuntimeError(
"Unexpected connection type: {}".format(connType))
@classmethod
def createNative(cls):
return cls.create(cls.TYPE_NATIVE)
@classmethod
def createRest(cls):
return cls.create(cls.TYPE_REST)
def __init__(self):
self.isOpen = False
self._type = self.TYPE_INVALID
def open(self):
if (self.isOpen):
raise RuntimeError("Cannot re-open an existing DB connection")
# below implemented by child classes
self.openByType()
logger.debug(
"[DB] data connection opened, type = {}".format(
self._type))
self.isOpen = True
def resetDb(self): # reset the whole database, etc.
if (not self.isOpen):
raise RuntimeError(
"Cannot reset database until connection is open")
# self._tdSql.prepare() # Recreate database, etc.
self.execute('drop database if exists db')
logger.debug("Resetting DB, dropped database")
# self._cursor.execute('create database db')
# self._cursor.execute('use db')
# tdSql.execute('show databases')
def queryScalar(self, sql) -> int:
return self._queryAny(sql)
def queryString(self, sql) -> str:
return self._queryAny(sql)
def _queryAny(self, sql): # actual query result as an int
if (not self.isOpen):
raise RuntimeError(
"Cannot query database until connection is open")
nRows = self.query(sql)
if nRows != 1:
raise RuntimeError(
"Unexpected result for query: {}, rows = {}".format(
sql, nRows))
if self.getResultRows() != 1 or self.getResultCols() != 1:
raise RuntimeError(
"Unexpected result set for query: {}".format(sql))
return self.getQueryResult()[0][0]
def execute(self, sql):
raise RuntimeError("Unexpected execution, should be overriden")
def openByType(self):
raise RuntimeError("Unexpected execution, should be overriden")
def getQueryResult(self):
raise RuntimeError("Unexpected execution, should be overriden")
def getResultRows(self):
raise RuntimeError("Unexpected execution, should be overriden")
def getResultCols(self):
raise RuntimeError("Unexpected execution, should be overriden")
# Sample: curl -u root:taosdata -d "show databases" localhost:6020/rest/sql
class DbConnRest(DbConn):
def __init__(self):
super().__init__()
self._type = self.TYPE_REST
self._url = "http://localhost:6020/rest/sql" # fixed for now
self._result = None
def openByType(self): # Open connection
pass # do nothing, always open
def close(self):
if (not self.isOpen):
raise RuntimeError(
"Cannot clean up database until connection is open")
# Do nothing for REST
logger.debug("[DB] REST Database connection closed")
self.isOpen = False
def _doSql(self, sql):
r = requests.post(self._url,
data=sql,
auth=HTTPBasicAuth('root', 'taosdata'))
rj = r.json()
# Sanity check for the "Json Result"
if ('status' not in rj):
raise RuntimeError("No status in REST response")
if rj['status'] == 'error': # clearly reported error
if ('code' not in rj): # error without code
raise RuntimeError("REST error return without code")
errno = rj['code'] # May need to massage this in the future
# print("Raising programming error with REST return: {}".format(rj))
raise taos.error.ProgrammingError(
rj['desc'], errno) # todo: check existance of 'desc'
if rj['status'] != 'succ': # better be this
raise RuntimeError(
"Unexpected REST return status: {}".format(
rj['status']))
nRows = rj['rows'] if ('rows' in rj) else 0
self._result = rj
return nRows
def execute(self, sql):
if (not self.isOpen):
raise RuntimeError(
"Cannot execute database commands until connection is open")
logger.debug("[SQL-REST] Executing SQL: {}".format(sql))
nRows = self._doSql(sql)
logger.debug(
"[SQL-REST] Execution Result, nRows = {}, SQL = {}".format(nRows, sql))
return nRows
def query(self, sql): # return rows affected
return self.execute(sql)
def getQueryResult(self):
return self._result['data']
def getResultRows(self):
print(self._result)
raise RuntimeError("TBD")
# return self._tdSql.queryRows
def getResultCols(self):
print(self._result)
raise RuntimeError("TBD")
class DbConnNative(DbConn):
def __init__(self):
super().__init__()
self._type = self.TYPE_REST
self._conn = None
self._cursor = None
def getBuildPath(self):
selfPath = os.path.dirname(os.path.realpath(__file__))
if ("community" in selfPath):
projPath = selfPath[:selfPath.find("communit")]
else:
projPath = selfPath[:selfPath.find("tests")]
for root, dirs, files in os.walk(projPath):
if ("taosd" in files):
rootRealPath = os.path.dirname(os.path.realpath(root))
if ("packaging" not in rootRealPath):
buildPath = root[:len(root) - len("/build/bin")]
break
return buildPath
def openByType(self): # Open connection
cfgPath = self.getBuildPath() + "/test/cfg"
self._conn = taos.connect(
host="127.0.0.1",
config=cfgPath) # TODO: make configurable
self._cursor = self._conn.cursor()
# Get the connection/cursor ready
self._cursor.execute('reset query cache')
# self._cursor.execute('use db') # do this at the beginning of every
# step
# Open connection
self._tdSql = TDSql()
self._tdSql.init(self._cursor)
def close(self):
if (not self.isOpen):
raise RuntimeError(
"Cannot clean up database until connection is open")
self._tdSql.close()
logger.debug("[DB] Database connection closed")
self.isOpen = False
def execute(self, sql):
if (not self.isOpen):
raise RuntimeError(
"Cannot execute database commands until connection is open")
logger.debug("[SQL] Executing SQL: {}".format(sql))
nRows = self._tdSql.execute(sql)
logger.debug(
"[SQL] Execution Result, nRows = {}, SQL = {}".format(
nRows, sql))
return nRows
def query(self, sql): # return rows affected
if (not self.isOpen):
raise RuntimeError(
"Cannot query database until connection is open")
logger.debug("[SQL] Executing SQL: {}".format(sql))
nRows = self._tdSql.query(sql)
logger.debug(
"[SQL] Query Result, nRows = {}, SQL = {}".format(
nRows, sql))
return nRows
# results are in: return self._tdSql.queryResult
def getQueryResult(self):
return self._tdSql.queryResult
def getResultRows(self):
return self._tdSql.queryRows
def getResultCols(self):
return self._tdSql.queryCols
class AnyState:
STATE_INVALID = -1
STATE_EMPTY = 0 # nothing there, no even a DB
STATE_DB_ONLY = 1 # we have a DB, but nothing else
STATE_TABLE_ONLY = 2 # we have a table, but totally empty
STATE_HAS_DATA = 3 # we have some data in the table
_stateNames = ["Invalid", "Empty", "DB_Only", "Table_Only", "Has_Data"]
STATE_VAL_IDX = 0
CAN_CREATE_DB = 1
CAN_DROP_DB = 2
CAN_CREATE_FIXED_SUPER_TABLE = 3
CAN_DROP_FIXED_SUPER_TABLE = 4
CAN_ADD_DATA = 5
CAN_READ_DATA = 6
def __init__(self):
self._info = self.getInfo()
def __str__(self):
# -1 hack to accomodate the STATE_INVALID case
return self._stateNames[self._info[self.STATE_VAL_IDX] + 1]
def getInfo(self):
raise RuntimeError("Must be overriden by child classes")
def equals(self, other):
if isinstance(other, int):
return self.getValIndex() == other
elif isinstance(other, AnyState):
return self.getValIndex() == other.getValIndex()
else:
raise RuntimeError(
"Unexpected comparison, type = {}".format(
type(other)))
def verifyTasksToState(self, tasks, newState):
raise RuntimeError("Must be overriden by child classes")
def getValIndex(self):
return self._info[self.STATE_VAL_IDX]
def getValue(self):
return self._info[self.STATE_VAL_IDX]
def canCreateDb(self):
return self._info[self.CAN_CREATE_DB]
def canDropDb(self):
return self._info[self.CAN_DROP_DB]
def canCreateFixedSuperTable(self):
return self._info[self.CAN_CREATE_FIXED_SUPER_TABLE]
def canDropFixedSuperTable(self):
return self._info[self.CAN_DROP_FIXED_SUPER_TABLE]
def canAddData(self):
return self._info[self.CAN_ADD_DATA]
def canReadData(self):
return self._info[self.CAN_READ_DATA]
def assertAtMostOneSuccess(self, tasks, cls):
sCnt = 0
for task in tasks:
if not isinstance(task, cls):
continue
if task.isSuccess():
# task.logDebug("Task success found")
sCnt += 1
if (sCnt >= 2):
raise RuntimeError(
"Unexpected more than 1 success with task: {}".format(cls))
def assertIfExistThenSuccess(self, tasks, cls):
sCnt = 0
exists = False
for task in tasks:
if not isinstance(task, cls):
continue
exists = True # we have a valid instance
if task.isSuccess():
sCnt += 1
if (exists and sCnt <= 0):
raise RuntimeError(
"Unexpected zero success for task: {}".format(cls))
def assertNoTask(self, tasks, cls):
for task in tasks:
if isinstance(task, cls):
raise CrashGenError(
"This task: {}, is not expected to be present, given the success/failure of others".format(cls.__name__))
def assertNoSuccess(self, tasks, cls):
for task in tasks:
if isinstance(task, cls):
if task.isSuccess():
raise RuntimeError(
"Unexpected successful task: {}".format(cls))
def hasSuccess(self, tasks, cls):
for task in tasks:
if not isinstance(task, cls):
continue
if task.isSuccess():
return True
return False
def hasTask(self, tasks, cls):
for task in tasks:
if isinstance(task, cls):
return True
return False
class StateInvalid(AnyState):
def getInfo(self):
return [
self.STATE_INVALID,
False, False, # can create/drop Db
False, False, # can create/drop fixed table
False, False, # can insert/read data with fixed table
]
# def verifyTasksToState(self, tasks, newState):
class StateEmpty(AnyState):
def getInfo(self):
return [
self.STATE_EMPTY,
True, False, # can create/drop Db
False, False, # can create/drop fixed table
False, False, # can insert/read data with fixed table
]
def verifyTasksToState(self, tasks, newState):
if (self.hasSuccess(tasks, TaskCreateDb)
): # at EMPTY, if there's succes in creating DB
if (not self.hasTask(tasks, TaskDropDb)): # and no drop_db tasks
# we must have at most one. TODO: compare numbers
self.assertAtMostOneSuccess(tasks, TaskCreateDb)
class StateDbOnly(AnyState):
def getInfo(self):
return [
self.STATE_DB_ONLY,
False, True,
True, False,
False, False,
]
def verifyTasksToState(self, tasks, newState):
if (not self.hasTask(tasks, TaskCreateDb)):
# only if we don't create any more
self.assertAtMostOneSuccess(tasks, TaskDropDb)
self.assertIfExistThenSuccess(tasks, TaskDropDb)
# self.assertAtMostOneSuccess(tasks, CreateFixedTableTask) # not true in massively parrallel cases
# Nothing to be said about adding data task
# if ( self.hasSuccess(tasks, DropDbTask) ): # dropped the DB
# self.assertHasTask(tasks, DropDbTask) # implied by hasSuccess
# self.assertAtMostOneSuccess(tasks, DropDbTask)
# self._state = self.STATE_EMPTY
# if ( self.hasSuccess(tasks, TaskCreateSuperTable) ): # did not drop db, create table success
# # self.assertHasTask(tasks, CreateFixedTableTask) # tried to create table
# if ( not self.hasTask(tasks, TaskDropSuperTable) ):
# self.assertAtMostOneSuccess(tasks, TaskCreateSuperTable) # at most 1 attempt is successful, if we don't drop anything
# self.assertNoTask(tasks, DropDbTask) # should have have tried
# if ( not self.hasSuccess(tasks, AddFixedDataTask) ): # just created table, no data yet
# # can't say there's add-data attempts, since they may all fail
# self._state = self.STATE_TABLE_ONLY
# else:
# self._state = self.STATE_HAS_DATA
# What about AddFixedData?
# elif ( self.hasSuccess(tasks, AddFixedDataTask) ):
# self._state = self.STATE_HAS_DATA
# else: # no success in dropping db tasks, no success in create fixed table? read data should also fail
# # raise RuntimeError("Unexpected no-success scenario") # We might just landed all failure tasks,
# self._state = self.STATE_DB_ONLY # no change
class StateSuperTableOnly(AnyState):
def getInfo(self):
return [
self.STATE_TABLE_ONLY,
False, True,
False, True,
True, True,
]
def verifyTasksToState(self, tasks, newState):
if (self.hasSuccess(tasks, TaskDropSuperTable)
): # we are able to drop the table
#self.assertAtMostOneSuccess(tasks, TaskDropSuperTable)
# we must have had recreted it
self.hasSuccess(tasks, TaskCreateSuperTable)
# self._state = self.STATE_DB_ONLY
# elif ( self.hasSuccess(tasks, AddFixedDataTask) ): # no success dropping the table, but added data
# self.assertNoTask(tasks, DropFixedTableTask) # not true in massively parrallel cases
# self._state = self.STATE_HAS_DATA
# elif ( self.hasSuccess(tasks, ReadFixedDataTask) ): # no success in prev cases, but was able to read data
# self.assertNoTask(tasks, DropFixedTableTask)
# self.assertNoTask(tasks, AddFixedDataTask)
# self._state = self.STATE_TABLE_ONLY # no change
# else: # did not drop table, did not insert data, did not read successfully, that is impossible
# raise RuntimeError("Unexpected no-success scenarios")
# TODO: need to revamp!!
class StateHasData(AnyState):
def getInfo(self):
return [
self.STATE_HAS_DATA,
False, True,
False, True,
True, True,
]
def verifyTasksToState(self, tasks, newState):
if (newState.equals(AnyState.STATE_EMPTY)):
self.hasSuccess(tasks, TaskDropDb)
if (not self.hasTask(tasks, TaskCreateDb)):
self.assertAtMostOneSuccess(tasks, TaskDropDb) # TODO: dicy
elif (newState.equals(AnyState.STATE_DB_ONLY)): # in DB only
if (not self.hasTask(tasks, TaskCreateDb)
): # without a create_db task
# we must have drop_db task
self.assertNoTask(tasks, TaskDropDb)
self.hasSuccess(tasks, TaskDropSuperTable)
# self.assertAtMostOneSuccess(tasks, DropFixedSuperTableTask) # TODO: dicy
# elif ( newState.equals(AnyState.STATE_TABLE_ONLY) ): # data deleted
# self.assertNoTask(tasks, TaskDropDb)
# self.assertNoTask(tasks, TaskDropSuperTable)
# self.assertNoTask(tasks, TaskAddData)
# self.hasSuccess(tasks, DeleteDataTasks)
else: # should be STATE_HAS_DATA
if (not self.hasTask(tasks, TaskCreateDb)
): # only if we didn't create one
# we shouldn't have dropped it
self.assertNoTask(tasks, TaskDropDb)
if (not self.hasTask(tasks, TaskCreateSuperTable)
): # if we didn't create the table
# we should not have a task that drops it
self.assertNoTask(tasks, TaskDropSuperTable)
# self.assertIfExistThenSuccess(tasks, ReadFixedDataTask)
class StateMechine:
def __init__(self, dbConn):
self._dbConn = dbConn
self._curState = self._findCurrentState() # starting state
# transitition target probabilities, indexed with value of STATE_EMPTY,
# STATE_DB_ONLY, etc.
self._stateWeights = [1, 3, 5, 15]
def getCurrentState(self):
return self._curState
def hasDatabase(self):
return self._curState.canDropDb() # ha, can drop DB means it has one
# May be slow, use cautionsly...
def getTaskTypes(self): # those that can run (directly/indirectly) from the current state
def typesToStrings(types):
ss = []
for t in types:
ss.append(t.__name__)
return ss
allTaskClasses = StateTransitionTask.__subclasses__() # all state transition tasks
firstTaskTypes = []
for tc in allTaskClasses:
# t = tc(self) # create task object
if tc.canBeginFrom(self._curState):
firstTaskTypes.append(tc)
# now we have all the tasks that can begin directly from the current
# state, let's figure out the INDIRECT ones
taskTypes = firstTaskTypes.copy() # have to have these
for task1 in firstTaskTypes: # each task type gathered so far
endState = task1.getEndState() # figure the end state
if endState is None: # does not change end state
continue # no use, do nothing
for tc in allTaskClasses: # what task can further begin from there?
if tc.canBeginFrom(endState) and (tc not in firstTaskTypes):
taskTypes.append(tc) # gather it
if len(taskTypes) <= 0:
raise RuntimeError(
"No suitable task types found for state: {}".format(
self._curState))
logger.debug(
"[OPS] Tasks found for state {}: {}".format(
self._curState,
typesToStrings(taskTypes)))
return taskTypes
def _findCurrentState(self):
dbc = self._dbConn
ts = time.time() # we use this to debug how fast/slow it is to do the various queries to find the current DB state
if dbc.query("show databases") == 0: # no database?!
# logger.debug("Found EMPTY state")
logger.debug(
"[STT] empty database found, between {} and {}".format(
ts, time.time()))
return StateEmpty()
# did not do this when openning connection, and this is NOT the worker
# thread, which does this on their own
dbc.execute("use db")
if dbc.query("show tables") == 0: # no tables
# logger.debug("Found DB ONLY state")
logger.debug(
"[STT] DB_ONLY found, between {} and {}".format(
ts, time.time()))
return StateDbOnly()
if dbc.query("SELECT * FROM db.{}".format(DbManager.getFixedSuperTableName())
) == 0: # no regular tables
# logger.debug("Found TABLE_ONLY state")
logger.debug(
"[STT] SUPER_TABLE_ONLY found, between {} and {}".format(
ts, time.time()))
return StateSuperTableOnly()
else: # has actual tables
# logger.debug("Found HAS_DATA state")
logger.debug(
"[STT] HAS_DATA found, between {} and {}".format(
ts, time.time()))
return StateHasData()
def transition(self, tasks):
if (len(tasks) == 0): # before 1st step, or otherwise empty
logger.debug("[STT] Starting State: {}".format(self._curState))
return # do nothing
# this should show up in the server log, separating steps
self._dbConn.execute("show dnodes")
# Generic Checks, first based on the start state
if self._curState.canCreateDb():
self._curState.assertIfExistThenSuccess(tasks, TaskCreateDb)
# self.assertAtMostOneSuccess(tasks, CreateDbTask) # not really, in
# case of multiple creation and drops
if self._curState.canDropDb():
self._curState.assertIfExistThenSuccess(tasks, TaskDropDb)
# self.assertAtMostOneSuccess(tasks, DropDbTask) # not really in
# case of drop-create-drop
# if self._state.canCreateFixedTable():
# self.assertIfExistThenSuccess(tasks, CreateFixedTableTask) # Not true, DB may be dropped
# self.assertAtMostOneSuccess(tasks, CreateFixedTableTask) # not
# really, in case of create-drop-create
# if self._state.canDropFixedTable():
# self.assertIfExistThenSuccess(tasks, DropFixedTableTask) # Not True, the whole DB may be dropped
# self.assertAtMostOneSuccess(tasks, DropFixedTableTask) # not
# really in case of drop-create-drop
# if self._state.canAddData():
# self.assertIfExistThenSuccess(tasks, AddFixedDataTask) # not true
# actually
# if self._state.canReadData():
# Nothing for sure
newState = self._findCurrentState()
logger.debug("[STT] New DB state determined: {}".format(newState))
# can old state move to new state through the tasks?
self._curState.verifyTasksToState(tasks, newState)
self._curState = newState
def pickTaskType(self):
# all the task types we can choose from at curent state
taskTypes = self.getTaskTypes()
weights = []
for tt in taskTypes:
endState = tt.getEndState()
if endState is not None:
# TODO: change to a method
weights.append(self._stateWeights[endState.getValIndex()])
else:
# read data task, default to 10: TODO: change to a constant
weights.append(10)
i = self._weighted_choice_sub(weights)
# logger.debug(" (weighted random:{}/{}) ".format(i, len(taskTypes)))
return taskTypes[i]
# ref:
# https://eli.thegreenplace.net/2010/01/22/weighted-random-generation-in-python/
def _weighted_choice_sub(self, weights):
# TODO: use our dice to ensure it being determinstic?
rnd = random.random() * sum(weights)
for i, w in enumerate(weights):
rnd -= w
if rnd < 0:
return i
# Manager of the Database Data/Connection
class DbManager():
def __init__(self, resetDb=True):
self.tableNumQueue = LinearQueue()
# datetime.datetime(2019, 1, 1) # initial date time tick
self._lastTick = self.setupLastTick()
self._lastInt = 0 # next one is initial integer
self._lock = threading.RLock()
# self.openDbServerConnection()
self._dbConn = DbConn.createNative() if (
gConfig.connector_type == 'native') else DbConn.createRest()
try:
self._dbConn.open() # may throw taos.error.ProgrammingError: disconnected
except taos.error.ProgrammingError as err:
# print("Error type: {}, msg: {}, value: {}".format(type(err), err.msg, err))
if (err.msg == 'client disconnected'): # cannot open DB connection
print(
"Cannot establish DB connection, please re-run script without parameter, and follow the instructions.")
sys.exit(2)
else:
raise
except BaseException:
print("[=] Unexpected exception")
raise
if resetDb:
self._dbConn.resetDb() # drop and recreate DB
# Do this after dbConn is in proper shape
self._stateMachine = StateMechine(self._dbConn)
def getDbConn(self):
return self._dbConn
def getStateMachine(self) -> StateMechine:
return self._stateMachine
# def getState(self):
# return self._stateMachine.getCurrentState()
# We aim to create a starting time tick, such that, whenever we run our test here once
# We should be able to safely create 100,000 records, which will not have any repeated time stamp
# when we re-run the test in 3 minutes (180 seconds), basically we should expand time duration
# by a factor of 500.
# TODO: what if it goes beyond 10 years into the future
# TODO: fix the error as result of above: "tsdb timestamp is out of range"
def setupLastTick(self):
t1 = datetime.datetime(2020, 6, 1)
t2 = datetime.datetime.now()
# maybe a very large number, takes 69 years to exceed Python int range
elSec = int(t2.timestamp() - t1.timestamp())
elSec2 = (elSec % (8 * 12 * 30 * 24 * 60 * 60 / 500)) * \
500 # a number representing seconds within 10 years
# print("elSec = {}".format(elSec))
t3 = datetime.datetime(2012, 1, 1) # default "keep" is 10 years
t4 = datetime.datetime.fromtimestamp(
t3.timestamp() + elSec2) # see explanation above
logger.info("Setting up TICKS to start from: {}".format(t4))
return t4
def pickAndAllocateTable(self): # pick any table, and "use" it
return self.tableNumQueue.pickAndAllocate()
def addTable(self):
with self._lock:
tIndex = self.tableNumQueue.push()
return tIndex
@classmethod
def getFixedSuperTableName(cls):
return "fs_table"
def releaseTable(self, i): # return the table back, so others can use it
self.tableNumQueue.release(i)
def getNextTick(self):
with self._lock: # prevent duplicate tick
if Dice.throw(10) == 0: # 1 in 10 chance
return self._lastTick + datetime.timedelta(0, -100)
else: # regular
# add one second to it
self._lastTick += datetime.timedelta(0, 1)
return self._lastTick
def getNextInt(self):
with self._lock:
self._lastInt += 1
return self._lastInt
def getNextBinary(self):
return "Beijing_Shanghai_Los_Angeles_New_York_San_Francisco_Chicago_Beijing_Shanghai_Los_Angeles_New_York_San_Francisco_Chicago_{}".format(
self.getNextInt())
def getNextFloat(self):
return 0.9 + self.getNextInt()
def getTableNameToDelete(self):
tblNum = self.tableNumQueue.pop() # TODO: race condition!
if (not tblNum): # maybe false
return False
return "table_{}".format(tblNum)
def cleanUp(self):
self._dbConn.close()
class TaskExecutor():
class BoundedList:
def __init__(self, size=10):
self._size = size
self._list = []
def add(self, n: int):
if not self._list: # empty
self._list.append(n)
return
# now we should insert
nItems = len(self._list)
insPos = 0
for i in range(nItems):
insPos = i
if n <= self._list[i]: # smaller than this item, time to insert
break # found the insertion point
insPos += 1 # insert to the right
if insPos == 0: # except for the 1st item, # TODO: elimiate first item as gating item
return # do nothing
# print("Inserting at postion {}, value: {}".format(insPos, n))
self._list.insert(insPos, n) # insert
newLen = len(self._list)
if newLen <= self._size:
return # do nothing
elif newLen == (self._size + 1):
del self._list[0] # remove the first item
else:
raise RuntimeError("Corrupt Bounded List")
def __str__(self):
return repr(self._list)
_boundedList = BoundedList()
def __init__(self, curStep):
self._curStep = curStep
@classmethod
def getBoundedList(cls):
return cls._boundedList
def getCurStep(self):
return self._curStep
def execute(self, task: Task, wt: WorkerThread): # execute a task on a thread
task.execute(wt)
def recordDataMark(self, n: int):
# print("[{}]".format(n), end="", flush=True)
self._boundedList.add(n)
# def logInfo(self, msg):
# logger.info(" T[{}.x]: ".format(self._curStep) + msg)
# def logDebug(self, msg):
# logger.debug(" T[{}.x]: ".format(self._curStep) + msg)
class Task():
taskSn = 100
@classmethod
def allocTaskNum(cls):
Task.taskSn += 1 # IMPORTANT: cannot use cls.taskSn, since each sub class will have a copy
# logger.debug("Allocating taskSN: {}".format(Task.taskSn))
return Task.taskSn
def __init__(self, dbManager: DbManager, execStats: ExecutionStats):
self._dbManager = dbManager
self._workerThread = None
self._err = None
self._aborted = False
self._curStep = None
self._numRows = None # Number of rows affected
# Assign an incremental task serial number
self._taskNum = self.allocTaskNum()
# logger.debug("Creating new task {}...".format(self._taskNum))
self._execStats = execStats
self._lastSql = "" # last SQL executed/attempted
def isSuccess(self):
return self._err is None
def isAborted(self):
return self._aborted
def clone(self): # TODO: why do we need this again?
newTask = self.__class__(self._dbManager, self._execStats)
return newTask
def logDebug(self, msg):
self._workerThread.logDebug(
"Step[{}.{}] {}".format(
self._curStep, self._taskNum, msg))
def logInfo(self, msg):
self._workerThread.logInfo(
"Step[{}.{}] {}".format(
self._curStep, self._taskNum, msg))
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
raise RuntimeError(
"To be implemeted by child classes, class name: {}".format(
self.__class__.__name__))
def execute(self, wt: WorkerThread):
wt.verifyThreadSelf()
self._workerThread = wt # type: ignore
te = wt.getTaskExecutor()
self._curStep = te.getCurStep()
self.logDebug(
"[-] executing task {}...".format(self.__class__.__name__))
self._err = None
self._execStats.beginTaskType(
self.__class__.__name__) # mark beginning
try:
self._executeInternal(te, wt) # TODO: no return value?
except taos.error.ProgrammingError as err:
errno2 = err.errno if (err.errno > 0) else 0x80000000 + err.errno # correct error scheme
if ( errno2 in [
0x05, # TSDB_CODE_RPC_NOT_READY
0x200, 0x360, 0x362, 0x36A, 0x36B, 0x36D, 0x381, 0x380, 0x383, 0x503,
0x510, # vnode not in ready state
0x600,
1000 # REST catch-all error
]) : # allowed errors
self.logDebug("[=] Acceptable Taos library exception: errno=0x{:X}, msg: {}, SQL: {}".format(errno2, err, self._lastSql))
print("_", end="", flush=True)
self._err = err
else:
errMsg = "[=] Unexpected Taos library exception: errno=0x{:X}, msg: {}, SQL: {}".format(
errno2, err, self._lastSql)
self.logDebug(errMsg)
if gConfig.debug:
raise # so that we see full stack
else: # non-debug
print(
"\n\n----------------------------\nProgram ABORTED Due to Unexpected TAOS Error: \n\n{}\n".format(errMsg) +
"----------------------------\n")
# sys.exit(-1)
self._err = err
self._aborted = True
except Exception as e:
self.logInfo("Non-TAOS exception encountered")
self._err = e
self._aborted = True
traceback.print_exc()
except BaseException:
self.logDebug(
"[=] Unexpected exception, SQL: {}".format(
self._lastSql))
raise
self._execStats.endTaskType(self.__class__.__name__, self.isSuccess())
self.logDebug("[X] task execution completed, {}, status: {}".format(
self.__class__.__name__, "Success" if self.isSuccess() else "Failure"))
# TODO: merge with above.
self._execStats.incExecCount(self.__class__.__name__, self.isSuccess())
def execSql(self, sql):
self._lastSql = sql
return self._dbManager.execute(sql)
def execWtSql(self, wt: WorkerThread, sql): # execute an SQL on the worker thread
self._lastSql = sql
return wt.execSql(sql)
def queryWtSql(self, wt: WorkerThread, sql): # execute an SQL on the worker thread
self._lastSql = sql
return wt.querySql(sql)
def getQueryResult(self, wt: WorkerThread): # execute an SQL on the worker thread
return wt.getQueryResult()
class ExecutionStats:
def __init__(self):
# total/success times for a task
self._execTimes: Dict[str, [int, int]] = {}
self._tasksInProgress = 0
self._lock = threading.Lock()
self._firstTaskStartTime = None
self._execStartTime = None
self._elapsedTime = 0.0 # total elapsed time
self._accRunTime = 0.0 # accumulated run time
self._failed = False
self._failureReason = None
def __str__(self):
return "[ExecStats: _failed={}, _failureReason={}".format(
self._failed, self._failureReason)
def isFailed(self):
return self._failed
def startExec(self):
self._execStartTime = time.time()
def endExec(self):
self._elapsedTime = time.time() - self._execStartTime
def incExecCount(self, klassName, isSuccess): # TODO: add a lock here
if klassName not in self._execTimes:
self._execTimes[klassName] = [0, 0]
t = self._execTimes[klassName] # tuple for the data
t[0] += 1 # index 0 has the "total" execution times
if isSuccess:
t[1] += 1 # index 1 has the "success" execution times
def beginTaskType(self, klassName):
with self._lock:
if self._tasksInProgress == 0: # starting a new round
self._firstTaskStartTime = time.time() # I am now the first task
self._tasksInProgress += 1
def endTaskType(self, klassName, isSuccess):
with self._lock:
self._tasksInProgress -= 1
if self._tasksInProgress == 0: # all tasks have stopped
self._accRunTime += (time.time() - self._firstTaskStartTime)
self._firstTaskStartTime = None
def registerFailure(self, reason):
self._failed = True
self._failureReason = reason
def printStats(self):
logger.info(
"----------------------------------------------------------------------")
logger.info(
"| Crash_Gen test {}, with the following stats:". format(
"FAILED (reason: {})".format(
self._failureReason) if self._failed else "SUCCEEDED"))
logger.info("| Task Execution Times (success/total):")
execTimesAny = 0
for k, n in self._execTimes.items():
execTimesAny += n[0]
logger.info("| {0:<24}: {1}/{2}".format(k, n[1], n[0]))
logger.info(
"| Total Tasks Executed (success or not): {} ".format(execTimesAny))
logger.info(
"| Total Tasks In Progress at End: {}".format(
self._tasksInProgress))
logger.info(
"| Total Task Busy Time (elapsed time when any task is in progress): {:.3f} seconds".format(
self._accRunTime))
logger.info(
"| Average Per-Task Execution Time: {:.3f} seconds".format(self._accRunTime / execTimesAny))
logger.info(
"| Total Elapsed Time (from wall clock): {:.3f} seconds".format(
self._elapsedTime))
logger.info(
"| Top numbers written: {}".format(
TaskExecutor.getBoundedList()))
logger.info(
"----------------------------------------------------------------------")
class StateTransitionTask(Task):
LARGE_NUMBER_OF_TABLES = 35
SMALL_NUMBER_OF_TABLES = 3
LARGE_NUMBER_OF_RECORDS = 50
SMALL_NUMBER_OF_RECORDS = 3
@classmethod
def getInfo(cls): # each sub class should supply their own information
raise RuntimeError("Overriding method expected")
_endState = None
@classmethod
def getEndState(cls): # TODO: optimize by calling it fewer times
raise RuntimeError("Overriding method expected")
# @classmethod
# def getBeginStates(cls):
# return cls.getInfo()[0]
# @classmethod
# def getEndState(cls): # returning the class name
# return cls.getInfo()[0]
@classmethod
def canBeginFrom(cls, state: AnyState):
# return state.getValue() in cls.getBeginStates()
raise RuntimeError("must be overriden")
@classmethod
def getRegTableName(cls, i):
return "db.reg_table_{}".format(i)
def execute(self, wt: WorkerThread):
super().execute(wt)
class TaskCreateDb(StateTransitionTask):
@classmethod
def getEndState(cls):
return StateDbOnly()
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canCreateDb()
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
self.execWtSql(wt, "create database db")
class TaskDropDb(StateTransitionTask):
@classmethod
def getEndState(cls):
return StateEmpty()
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canDropDb()
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
self.execWtSql(wt, "drop database db")
logger.debug("[OPS] database dropped at {}".format(time.time()))
class TaskCreateSuperTable(StateTransitionTask):
@classmethod
def getEndState(cls):
return StateSuperTableOnly()
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canCreateFixedSuperTable()
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
if not wt.dbInUse(): # no DB yet, to the best of our knowledge
logger.debug("Skipping task, no DB yet")
return
tblName = self._dbManager.getFixedSuperTableName()
# wt.execSql("use db") # should always be in place
self.execWtSql(
wt,
"create table db.{} (ts timestamp, speed int) tags (b binary(200), f float) ".format(tblName))
# No need to create the regular tables, INSERT will do that
# automatically
class TaskReadData(StateTransitionTask):
@classmethod
def getEndState(cls):
return None # meaning doesn't affect state
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canReadData()
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
sTbName = self._dbManager.getFixedSuperTableName()
self.queryWtSql(wt, "select TBNAME from db.{}".format(
sTbName)) # TODO: analyze result set later
if random.randrange(
5) == 0: # 1 in 5 chance, simulate a broken connection. TODO: break connection in all situations
wt.getDbConn().close()
wt.getDbConn().open()
else:
# wt.getDbConn().getQueryResult()
rTables = self.getQueryResult(wt)
# print("rTables[0] = {}, type = {}".format(rTables[0], type(rTables[0])))
for rTbName in rTables: # regular tables
self.execWtSql(wt, "select * from db.{}".format(rTbName[0]))
# tdSql.query(" cars where tbname in ('carzero', 'carone')")
class TaskDropSuperTable(StateTransitionTask):
@classmethod
def getEndState(cls):
return StateDbOnly()
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canDropFixedSuperTable()
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
# 1/2 chance, we'll drop the regular tables one by one, in a randomized
# sequence
if Dice.throw(2) == 0:
tblSeq = list(range(
2 + (self.LARGE_NUMBER_OF_TABLES if gConfig.larger_data else self.SMALL_NUMBER_OF_TABLES)))
random.shuffle(tblSeq)
tickOutput = False # if we have spitted out a "d" character for "drop regular table"
isSuccess = True
for i in tblSeq:
regTableName = self.getRegTableName(
i) # "db.reg_table_{}".format(i)
try:
self.execWtSql(wt, "drop table {}".format(
regTableName)) # nRows always 0, like MySQL
except taos.error.ProgrammingError as err:
# correcting for strange error number scheme
errno2 = err.errno if (
err.errno > 0) else 0x80000000 + err.errno
if (errno2 in [0x362]): # mnode invalid table name
isSuccess = False
logger.debug(
"[DB] Acceptable error when dropping a table")
continue # try to delete next regular table
if (not tickOutput):
tickOutput = True # Print only one time
if isSuccess:
print("d", end="", flush=True)
else:
print("f", end="", flush=True)
# Drop the super table itself
tblName = self._dbManager.getFixedSuperTableName()
self.execWtSql(wt, "drop table db.{}".format(tblName))
class TaskAlterTags(StateTransitionTask):
@classmethod
def getEndState(cls):
return None # meaning doesn't affect state
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canDropFixedSuperTable() # if we can drop it, we can alter tags
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
tblName = self._dbManager.getFixedSuperTableName()
dice = Dice.throw(4)
if dice == 0:
sql = "alter table db.{} add tag extraTag int".format(tblName)
elif dice == 1:
sql = "alter table db.{} drop tag extraTag".format(tblName)
elif dice == 2:
sql = "alter table db.{} drop tag newTag".format(tblName)
else: # dice == 3
sql = "alter table db.{} change tag extraTag newTag".format(
tblName)
self.execWtSql(wt, sql)
class TaskAddData(StateTransitionTask):
# Track which table is being actively worked on
activeTable: Set[int] = set()
# We use these two files to record operations to DB, useful for power-off
# tests
fAddLogReady = None
fAddLogDone = None
@classmethod
def prepToRecordOps(cls):
if gConfig.record_ops:
if (cls.fAddLogReady is None):
logger.info(
"Recording in a file operations to be performed...")
cls.fAddLogReady = open("add_log_ready.txt", "w")
if (cls.fAddLogDone is None):
logger.info("Recording in a file operations completed...")
cls.fAddLogDone = open("add_log_done.txt", "w")
@classmethod
def getEndState(cls):
return StateHasData()
@classmethod
def canBeginFrom(cls, state: AnyState):
return state.canAddData()
def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
ds = self._dbManager
# wt.execSql("use db") # TODO: seems to be an INSERT bug to require
# this
tblSeq = list(
range(
self.LARGE_NUMBER_OF_TABLES if gConfig.larger_data else self.SMALL_NUMBER_OF_TABLES))
random.shuffle(tblSeq)
for i in tblSeq:
if (i in self.activeTable): # wow already active
# logger.info("Concurrent data insertion into table: {}".format(i))
# print("ct({})".format(i), end="", flush=True) # Concurrent
# insertion into table
print("x", end="", flush=True)
else:
self.activeTable.add(i) # marking it active
# No need to shuffle data sequence, unless later we decide to do
# non-increment insertion
regTableName = self.getRegTableName(
i) # "db.reg_table_{}".format(i)
for j in range(
self.LARGE_NUMBER_OF_RECORDS if gConfig.larger_data else self.SMALL_NUMBER_OF_RECORDS): # number of records per table
nextInt = ds.getNextInt()
if gConfig.record_ops:
self.prepToRecordOps()
self.fAddLogReady.write(
"Ready to write {} to {}\n".format(
nextInt, regTableName))
self.fAddLogReady.flush()
os.fsync(self.fAddLogReady)
sql = "insert into {} using {} tags ('{}', {}) values ('{}', {});".format(
regTableName,
ds.getFixedSuperTableName(),
ds.getNextBinary(), ds.getNextFloat(),
ds.getNextTick(), nextInt)
self.execWtSql(wt, sql)
# Successfully wrote the data into the DB, let's record it
# somehow
te.recordDataMark(nextInt)
if gConfig.record_ops:
self.fAddLogDone.write(
"Wrote {} to {}\n".format(
nextInt, regTableName))
self.fAddLogDone.flush()
os.fsync(self.fAddLogDone)
self.activeTable.discard(i) # not raising an error, unlike remove
# Deterministic random number generator
class Dice():
seeded = False # static, uninitialized
@classmethod
def seed(cls, s): # static
if (cls.seeded):
raise RuntimeError(
"Cannot seed the random generator more than once")
cls.verifyRNG()
random.seed(s)
cls.seeded = True # TODO: protect against multi-threading
@classmethod
def verifyRNG(cls): # Verify that the RNG is determinstic
random.seed(0)
x1 = random.randrange(0, 1000)
x2 = random.randrange(0, 1000)
x3 = random.randrange(0, 1000)
if (x1 != 864 or x2 != 394 or x3 != 776):
raise RuntimeError("System RNG is not deterministic")
@classmethod
def throw(cls, stop): # get 0 to stop-1
return cls.throwRange(0, stop)
@classmethod
def throwRange(cls, start, stop): # up to stop-1
if (not cls.seeded):
raise RuntimeError("Cannot throw dice before seeding it")
return random.randrange(start, stop)
# Anyone needing to carry out work should simply come here
# class WorkDispatcher():
# def __init__(self, dbState):
# # self.totalNumMethods = 2
# self.tasks = [
# # CreateTableTask(dbState), # Obsolete
# # DropTableTask(dbState),
# # AddDataTask(dbState),
# ]
# def throwDice(self):
# max = len(self.tasks) - 1
# dRes = random.randint(0, max)
# # logger.debug("Threw the dice in range [{},{}], and got: {}".format(0,max,dRes))
# return dRes
# def pickTask(self):
# dice = self.throwDice()
# return self.tasks[dice]
# def doWork(self, workerThread):
# task = self.pickTask()
# task.execute(workerThread)
class LoggingFilter(logging.Filter):
def filter(self, record: logging.LogRecord):
if (record.levelno >= logging.INFO):
return True # info or above always log
# Commenting out below to adjust...
# if msg.startswith("[TRD]"):
# return False
return True
class MyLoggingAdapter(logging.LoggerAdapter):
def process(self, msg, kwargs):
return "[{}]{}".format(threading.get_ident() % 10000, msg), kwargs
# return '[%s] %s' % (self.extra['connid'], msg), kwargs
class SvcManager:
MAX_QUEUE_SIZE = 10000
def __init__(self):
print("Starting service manager")
signal.signal(signal.SIGTERM, self.sigIntHandler)
signal.signal(signal.SIGINT, self.sigIntHandler)
signal.signal(signal.SIGUSR1, self.sigUsrHandler)
self.ioThread = None
self.subProcess = None
self.shouldStop = False
# self.status = MainExec.STATUS_RUNNING # set inside _startTaosService()
def svcOutputReader(self, out: IO, queue):
# Important Reference: https://stackoverflow.com/questions/375427/non-blocking-read-on-a-subprocess-pipe-in-python
print("This is the svcOutput Reader...")
# for line in out :
for line in iter(out.readline, b''):
# print("Finished reading a line: {}".format(line))
# print("Adding item to queue...")
line = line.decode("utf-8").rstrip()
queue.put(line) # This might block, and then causing "out" buffer to block
print("_i", end="", flush=True)
# Trim the queue if necessary
oneTenthQSize = self.MAX_QUEUE_SIZE // 10
if (queue.qsize() >= (self.MAX_QUEUE_SIZE - oneTenthQSize) ) : # 90% full?
print("Triming IPC queue by: {}".format(oneTenthQSize))
for i in range(0, oneTenthQSize) :
try:
queue.get_nowait()
except Empty:
break # break out of for loop, no more trimming
if self.shouldStop :
print("Stopping to read output from sub process")
break
# queue.put(line)
print("\nNo more output (most likely) from IO thread managing TDengine service") # meaning sub process must have died
out.close()
def _doMenu(self):
choice = ""
while True:
print("\nInterrupting Service Program, Choose an Action: ")
print("1: Resume")
print("2: Terminate")
print("3: Restart")
# Remember to update the if range below
# print("Enter Choice: ", end="", flush=True)
while choice == "":
choice = input("Enter Choice: ")
if choice != "":
break # done with reading repeated input
if choice in ["1", "2", "3"]:
break # we are done with whole method
print("Invalid choice, please try again.")
choice = "" # reset
return choice
def sigUsrHandler(self, signalNumber, frame) :
print("Interrupting main thread execution upon SIGUSR1")
if self.status != MainExec.STATUS_RUNNING :
print("Ignoring repeated SIG...")
return # do nothing if it's already not running
self.status = MainExec.STATUS_STOPPING
choice = self._doMenu()
if choice == "1" :
self.sigHandlerResume() # TODO: can the sub-process be blocked due to us not reading from queue?
elif choice == "2" :
self.stopTaosService()
elif choice == "3" :
self.stopTaosService()
self.startTaosService()
else:
raise RuntimeError("Invalid menu choice: {}".format(choice))
def sigIntHandler(self, signalNumber, frame):
print("Sig INT Handler starting...")
if self.status != MainExec.STATUS_RUNNING :
print("Ignoring repeated SIG_INT...")
return
self.status = MainExec.STATUS_STOPPING # immediately set our status
self.stopTaosService()
print("INT signal handler returning...")
def sigHandlerResume(self) :
print("Resuming TDengine service manager thread (main thread)...\n\n")
self.status = MainExec.STATUS_RUNNING
def joinIoThread(self):
if self.ioThread:
self.ioThread.join()
self.ioThread = None
else :
print("Joining empty thread, doing nothing")
TD_READY_MSG = "TDengine is initialized successfully"
def _procIpcBatch(self):
# Process all the output generated by the underlying sub process, managed by IO thread
while True :
try:
line = self.ipcQueue.get_nowait() # getting output at fast speed
print("_o", end="", flush=True)
if self.status == MainExec.STATUS_STARTING : # we are starting, let's see if we have started
if line.find(self.TD_READY_MSG) != -1 : # found
self.status = MainExec.STATUS_RUNNING
except Empty:
# time.sleep(2.3) # wait only if there's no output
# no more output
return # we are done with THIS BATCH
else: # got line
print(line)
def _procIpcAll(self):
while True :
print("<", end="", flush=True)
self._procIpcBatch() # process one batch
# check if the ioThread is still running
if (not self.ioThread) or (not self.ioThread.is_alive()):
print("IO Thread (with subprocess) has ended, main thread now exiting...")
self.stopTaosService()
self._procIpcBatch() # one more batch
return # TODO: maybe one last batch?
# Maybe handler says we should exit now
if self.shouldStop:
print("Main thread ending all IPC processing with IOThread/SubProcess")
self._procIpcBatch() # one more batch
return
print(">", end="", flush=True)
time.sleep(0.5)
def getBuildPath(self):
selfPath = os.path.dirname(os.path.realpath(__file__))
if ("community" in selfPath):
projPath = selfPath[:selfPath.find("communit")]
else:
projPath = selfPath[:selfPath.find("tests")]
for root, dirs, files in os.walk(projPath):
if ("taosd" in files):
rootRealPath = os.path.dirname(os.path.realpath(root))
if ("packaging" not in rootRealPath):
buildPath = root[:len(root) - len("/build/bin")]
break
return buildPath
def startTaosService(self):
ON_POSIX = 'posix' in sys.builtin_module_names
taosdPath = self.getBuildPath() + "/build/bin/taosd"
cfgPath = self.getBuildPath() + "/test/cfg"
svcCmd = [taosdPath, '-c', cfgPath]
# svcCmd = ['vmstat', '1']
if self.subProcess : # already there
raise RuntimeError("Corrupt process state")
self.subProcess = subprocess.Popen(
svcCmd,
stdout=subprocess.PIPE,
# bufsize=1, # not supported in binary mode
close_fds=ON_POSIX) # had text=True, which interferred with reading EOF
self.ipcQueue = Queue()
if self.ioThread :
raise RuntimeError("Corrupt thread state")
self.ioThread = threading.Thread(target=self.svcOutputReader, args=(self.subProcess.stdout, self.ipcQueue))
self.ioThread.daemon = True # thread dies with the program
self.ioThread.start()
self.shouldStop = False # don't let the main loop stop
self.status = MainExec.STATUS_STARTING
# wait for service to start
for i in range(0, 10) :
time.sleep(1.0)
self._procIpcBatch() # pump messages
print("_zz_", end="", flush=True)
if self.status == MainExec.STATUS_RUNNING :
print("TDengine service READY to process requests")
return # now we've started
raise RuntimeError("TDengine service did not start successfully") # TODO: handle this better?
def stopTaosService(self):
# can be called from both main thread or signal handler
print("Terminating TDengine service running as the sub process...")
# Linux will send Control-C generated SIGINT to the TDengine process already, ref: https://unix.stackexchange.com/questions/176235/fork-and-how-signals-are-delivered-to-processes
if not self.subProcess :
print("Process already stopped")
return
retCode = self.subProcess.poll()
if retCode : # valid return code, process ended
self.subProcess = None
else: # process still alive, let's interrupt it
print("Sub process still running, sending SIG_INT and waiting for it to stop...")
self.subProcess.send_signal(signal.SIGINT) # sub process should end, then IPC queue should end, causing IO thread to end
try :
self.subProcess.wait(10)
except subprocess.TimeoutExpired as err:
print("Time out waiting for TDengine service process to exit")
else:
print("TDengine service process terminated successfully from SIG_INT")
self.subProcess = None
if self.subProcess and (not self.subProcess.poll()):
print("Sub process is still running... pid = {}".format(self.subProcess.pid))
self.shouldStop = True
self.joinIoThread()
def run(self):
self.startTaosService()
# proc = subprocess.Popen(['echo', '"to stdout"'],
# stdout=subprocess.PIPE,
# )
# stdout_value = proc.communicate()[0]
# print('\tstdout: {}'.format(repr(stdout_value)))
self._procIpcAll()
print("End of loop reading from IPC queue")
self.joinIoThread() # should have started already
print("SvcManager Run Finished")
class ClientManager:
def __init__(self):
print("Starting service manager")
signal.signal(signal.SIGTERM, self.sigIntHandler)
signal.signal(signal.SIGINT, self.sigIntHandler)
self.status = MainExec.STATUS_RUNNING
self.tc = None
def sigIntHandler(self, signalNumber, frame):
if self.status != MainExec.STATUS_RUNNING:
print("Ignoring repeated SIGINT...")
return # do nothing if it's already not running
self.status = MainExec.STATUS_STOPPING # immediately set our status
print("Terminating program...")
self.tc.requestToStop()
def _printLastNumbers(self): # to verify data durability
dbManager = DbManager(resetDb=False)
dbc = dbManager.getDbConn()
if dbc.query("show databases") == 0: # no databae
return
if dbc.query("show tables") == 0: # no tables
return
dbc.execute("use db")
sTbName = dbManager.getFixedSuperTableName()
# get all regular tables
# TODO: analyze result set later
dbc.query("select TBNAME from db.{}".format(sTbName))
rTables = dbc.getQueryResult()
bList = TaskExecutor.BoundedList()
for rTbName in rTables: # regular tables
dbc.query("select speed from db.{}".format(rTbName[0]))
numbers = dbc.getQueryResult()
for row in numbers:
# print("<{}>".format(n), end="", flush=True)
bList.add(row[0])
print("Top numbers in DB right now: {}".format(bList))
print("TDengine client execution is about to start in 2 seconds...")
time.sleep(2.0)
dbManager = None # release?
def prepare(self):
self._printLastNumbers()
def run(self):
if gConfig.auto_start_service :
svcMgr = SvcManager()
svcMgr.startTaosService()
self._printLastNumbers()
dbManager = DbManager() # Regular function
Dice.seed(0) # initial seeding of dice
thPool = ThreadPool(gConfig.num_threads, gConfig.max_steps)
self.tc = ThreadCoordinator(thPool, dbManager)
self.tc.run()
# print("exec stats: {}".format(self.tc.getExecStats()))
# print("TC failed = {}".format(self.tc.isFailed()))
self.conclude()
if gConfig.auto_start_service :
svcMgr.stopTaosService()
# print("TC failed (2) = {}".format(self.tc.isFailed()))
# Linux return code: ref https://shapeshed.com/unix-exit-codes/
return 1 if self.tc.isFailed() else 0
def conclude(self):
self.tc.printStats()
self.tc.getDbManager().cleanUp()
class MainExec:
STATUS_STARTING = 1
STATUS_RUNNING = 2
STATUS_STOPPING = 3
# STATUS_STOPPED = 3 # Not used yet
@classmethod
def runClient(cls):
clientManager = ClientManager()
return clientManager.run()
@classmethod
def runService(cls):
svcManager = SvcManager()
svcManager.run()
@classmethod
def runTemp(cls): # for debugging purposes
# # Hack to exercise reading from disk, imcreasing coverage. TODO: fix
# dbc = dbState.getDbConn()
# sTbName = dbState.getFixedSuperTableName()
# dbc.execute("create database if not exists db")
# if not dbState.getState().equals(StateEmpty()):
# dbc.execute("use db")
# rTables = None
# try: # the super table may not exist
# sql = "select TBNAME from db.{}".format(sTbName)
# logger.info("Finding out tables in super table: {}".format(sql))
# dbc.query(sql) # TODO: analyze result set later
# logger.info("Fetching result")
# rTables = dbc.getQueryResult()
# logger.info("Result: {}".format(rTables))
# except taos.error.ProgrammingError as err:
# logger.info("Initial Super table OPS error: {}".format(err))
# # sys.exit()
# if ( not rTables == None):
# # print("rTables[0] = {}, type = {}".format(rTables[0], type(rTables[0])))
# try:
# for rTbName in rTables : # regular tables
# ds = dbState
# logger.info("Inserting into table: {}".format(rTbName[0]))
# sql = "insert into db.{} values ('{}', {});".format(
# rTbName[0],
# ds.getNextTick(), ds.getNextInt())
# dbc.execute(sql)
# for rTbName in rTables : # regular tables
# dbc.query("select * from db.{}".format(rTbName[0])) # TODO: check success failure
# logger.info("Initial READING operation is successful")
# except taos.error.ProgrammingError as err:
# logger.info("Initial WRITE/READ error: {}".format(err))
# Sandbox testing code
# dbc = dbState.getDbConn()
# while True:
# rows = dbc.query("show databases")
# print("Rows: {}, time={}".format(rows, time.time()))
return
def main():
# Super cool Python argument library:
# https://docs.python.org/3/library/argparse.html
parser = argparse.ArgumentParser(
formatter_class=argparse.RawDescriptionHelpFormatter,
description=textwrap.dedent('''\
TDengine Auto Crash Generator (PLEASE NOTICE the Prerequisites Below)
---------------------------------------------------------------------
1. You build TDengine in the top level ./build directory, as described in offical docs
2. You run the server there before this script: ./build/bin/taosd -c test/cfg
'''))
parser.add_argument('-a', '--auto-start-service', action='store_true',
help='Automatically start/stop the TDengine service (default: false)')
parser.add_argument('-c', '--connector-type', action='store', default='native', type=str,
help='Connector type to use: native, rest, or mixed (default: 10)')
parser.add_argument('-d', '--debug', action='store_true',
help='Turn on DEBUG mode for more logging (default: false)')
parser.add_argument('-e', '--run-tdengine', action='store_true',
help='Run TDengine service in foreground (default: false)')
parser.add_argument('-l', '--larger-data', action='store_true',
help='Write larger amount of data during write operations (default: false)')
parser.add_argument('-p', '--per-thread-db-connection', action='store_true',
help='Use a single shared db connection (default: false)')
parser.add_argument('-r', '--record-ops', action='store_true',
help='Use a pair of always-fsynced fils to record operations performing + performed, for power-off tests (default: false)')
parser.add_argument('-s', '--max-steps', action='store', default=1000, type=int,
help='Maximum number of steps to run (default: 100)')
parser.add_argument('-t', '--num-threads', action='store', default=5, type=int,
help='Number of threads to run (default: 10)')
global gConfig
gConfig = parser.parse_args()
# if len(sys.argv) == 1:
# parser.print_help()
# sys.exit()
# Logging Stuff
global logger
_logger = logging.getLogger('CrashGen') # real logger
_logger.addFilter(LoggingFilter())
ch = logging.StreamHandler()
_logger.addHandler(ch)
# Logging adapter, to be used as a logger
logger = MyLoggingAdapter(_logger, [])
if (gConfig.debug):
logger.setLevel(logging.DEBUG) # default seems to be INFO
else:
logger.setLevel(logging.INFO)
# Run server or client
if gConfig.run_tdengine: # run server
MainExec.runService()
else:
return MainExec.runClient()
# logger.info("Crash_Gen execution finished")
if __name__ == "__main__":
exitCode = main()
# print("Exiting with code: {}".format(exitCode))
sys.exit(exitCode)
Reference in New Issue View Git Blame Copy Permalink