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Code Issues 19 Projects 3 Activity
6ae5c0d912
troggle/databaseReset.py
Philip Sargent 50d753a87b Convert codebase for python3 usage
2020-05-24 20:56:27 +01:00

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from __future__ import (absolute_import, division,
print_function)
import os
import time
import timeit
import json
import settings
os.environ['PYTHONPATH'] = settings.PYTHON_PATH
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'settings')
from django.core import management
from django.db import connection, close_old_connections
from django.contrib.auth.models import User
from django.http import HttpResponse
from django.core.urlresolvers import reverse
from troggle.core.models import Cave, Entrance
import troggle.settings
import troggle.flatpages.models
import troggle.logbooksdump
# NOTE databaseReset.py is *imported* by views_other.py as it is used in the control panel
# presented there.
expouser=settings.EXPOUSER
expouserpass=settings.EXPOUSERPASS
expouseremail=settings.EXPOUSER_EMAIL
def reinit_db():
"""Rebuild database from scratch. Deletes the file first if sqlite is used,
otherwise it drops the database and creates it.
"""
currentdbname = settings.DATABASES['default']['NAME']
if settings.DATABASES['default']['ENGINE'] == 'django.db.backends.sqlite3':
try:
os.remove(currentdbname)
except OSError:
pass
else:
cursor = connection.cursor()
cursor.execute("DROP DATABASE %s" % currentdbname)
cursor.execute("CREATE DATABASE %s" % currentdbname)
cursor.execute("ALTER DATABASE %s CHARACTER SET=utf8" % currentdbname)
cursor.execute("USE %s" % currentdbname)
syncuser()
def syncuser():
"""Sync user - needed after reload
"""
print("Synchronizing user")
management.call_command('migrate', interactive=False)
user = User.objects.create_user(expouser, expouseremail, expouserpass)
user.is_staff = True
user.is_superuser = True
user.save()
def dirsredirect():
"""Make directories that troggle requires and sets up page redirects
"""
#should also deal with permissions here.
#if not os.path.isdir(settings.PHOTOS_ROOT):
#os.mkdir(settings.PHOTOS_ROOT)
for oldURL, newURL in [("indxal.htm", reverse("caveindex"))]:
f = troggle.flatpages.models.Redirect(originalURL = oldURL, newURL = newURL)
f.save()
def import_caves():
import troggle.parsers.caves
print("Importing Caves")
troggle.parsers.caves.readcaves()
def import_people():
import troggle.parsers.people
print("Importing People (folk.csv)")
troggle.parsers.people.LoadPersonsExpos()
def import_logbooks():
import troggle.parsers.logbooks
print("Importing Logbooks")
troggle.parsers.logbooks.LoadLogbooks()
def import_QMs():
print("Importing QMs (old caves)")
import troggle.parsers.QMs
# import process itself runs on qm.csv in only 3 old caves, not the modern ones!
def import_survexblks():
import troggle.parsers.survex
print("Importing Survex Blocks")
troggle.parsers.survex.LoadAllSurvexBlocks()
def import_survexpos():
import troggle.parsers.survex
print("Importing Survex x/y/z Positions")
troggle.parsers.survex.LoadPos()
def import_surveyimgs():
"""This appears to store data in unused objects. The code is kept
for future re-working to manage progress against notes, plans and elevs.
"""
#import troggle.parsers.surveys
#print("Importing survey images")
#troggle.parsers.surveys.parseSurveys(logfile=settings.LOGFILE)
def import_surveyscans():
import troggle.parsers.surveys
print("Importing Survey Scans")
troggle.parsers.surveys.LoadListScans()
def import_tunnelfiles():
import troggle.parsers.surveys
print("Importing Tunnel files")
troggle.parsers.surveys.LoadTunnelFiles()
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# These functions moved to a different file - not used currently.
#import logbooksdump
#def import_auto_logbooks():
#def dumplogbooks():
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
class JobQueue():
"""A list of import operations to run. Always reports profile times
in the same order.
"""
def __init__(self,run):
self.runlabel = run
self.queue = [] # tuples of (jobname, jobfunction)
self.results = {}
self.results_order=[
"date","runlabel","reinit", "caves", "people",
"logbooks", "QMs", "survexblks", "survexpos",
"tunnel", "scans", "surveyimgs", "test", "dirsredirect", "syncuser" ]
for k in self.results_order:
self.results[k]=[]
self.tfile = "import_profile.json"
self.htmlfile = "profile.html" # for HTML results table. Not yet done.
#Adding elements to queue - enqueue
def enq(self,label,func):
self.queue.append((label,func))
return True
#Removing the last element from the queue - dequeue
# def deq(self):
# if len(self.queue)>0:
# return self.queue.pop()
# return ("Queue Empty!")
def loadprofiles(self):
"""Load timings for previous runs from file
"""
if os.path.isfile(self.tfile):
try:
f = open(self.tfile, "r")
data = json.load(f)
for j in data:
self.results[j] = data[j]
except:
print("FAILURE parsing JSON file %s" % (self.tfile))
# Python bug: https://github.com/ShinNoNoir/twitterwebsearch/issues/12
f.close()
for j in self.results_order:
self.results[j].append(None) # append a placeholder
return True
def saveprofiles(self):
with open(self.tfile, 'w') as f:
json.dump(self.results, f)
return True
def memdumpsql(self):
djconn = django.db.connection
from dump import _iterdump
with open('memdump.sql', 'w') as f:
for line in _iterdump(djconn):
f.write('%s\n' % line.encode("utf8"))
return True
def runqonce(self):
"""Run all the jobs in the queue provided - once
"""
print("** Running job ", self.runlabel)
jobstart = time.time()
self.results["date"].pop()
self.results["date"].append(jobstart)
self.results["runlabel"].pop()
self.results["runlabel"].append(self.runlabel)
for i in self.queue:
start = time.time()
i[1]() # looks ugly but invokes function passed in the second item in the tuple
duration = time.time()-start
print("\n*- Ended \"", i[0], "\" %.1f seconds" % duration)
self.results[i[0]].pop() # the null item
self.results[i[0]].append(duration)
jobend = time.time()
jobduration = jobend-jobstart
print("** Ended job %s - %.1f seconds total." % (self.runlabel,jobduration))
return True
def run(self):
"""First runs all the jobs in the queue against a scratch in-memory db
then re-runs the import against the db specified in settings.py
Default behaviour is to skip the in-memory phase.
When MySQL is the db the in-memory phase crashes as MySQL does not properly
relinquish some kind of db connection (not fixed yet)
"""
self.loadprofiles()
# save db settings for later
dbengine = settings.DATABASES['default']['ENGINE']
dbname = settings.DATABASES['default']['NAME']
dbdefault = settings.DATABASES['default']
skipmem = False
if self.runlabel:
if self.runlabel == "":
skipmem = True
elif self.runlabel[0:2] == "F-":
skipmem = True
else:
skipmem = True
print("-- ", settings.DATABASES['default']['NAME'], settings.DATABASES['default']['ENGINE'])
#print "-- DATABASES.default", settings.DATABASES['default']
if dbname ==":memory:":
# just run, and save the sql file
self.runqonce()
self.memdumpsql() # saved contents of scratch db, could be imported later..
self.saveprofiles()
elif skipmem:
self.runqonce()
self.saveprofiles()
else:
django.db.close_old_connections() # needed if MySQL running?
# run all the imports through :memory: first
settings.DATABASES['default']['ENGINE'] = 'django.db.backends.sqlite3'
settings.DATABASES['default']['NAME'] = ":memory:"
settings.DATABASES['default'] = {'ENGINE': 'django.db.backends.sqlite3',
'AUTOCOMMIT': True,
'ATOMIC_REQUESTS': False,
'NAME': ':memory:',
'CONN_MAX_AGE': 0,
'TIME_ZONE': 'UTC',
'OPTIONS': {},
'HOST': '',
'USER': '',
'TEST': {'COLLATION': None, 'CHARSET': None, 'NAME': None, 'MIRROR': None},
'PASSWORD': '',
'PORT': ''}
print("-- ", settings.DATABASES['default']['NAME'], settings.DATABASES['default']['ENGINE'])
print("-- DATABASES.default", settings.DATABASES['default'])
# but because the user may be expecting to add this to a db with lots of tables already there,
# the jobqueue may not start from scratch so we need to initialise the db properly first
# because we are using an empty :memory: database
# But initiating twice crashes it; so be sure to do it once only.
# Damn. syncdb() is still calling MySQL somehow **conn_params not sqlite3. So crashes on expo server.
if ("reinit",reinit_db) not in self.queue:
reinit_db()
if ("dirsredirect",dirsredirect) not in self.queue:
dirsredirect()
if ("caves",import_caves) not in self.queue:
import_caves() # sometime extract the initialising code from this and put in reinit...
if ("people",import_people) not in self.queue:
import_people() # sometime extract the initialising code from this and put in reinit...
django.db.close_old_connections() # maybe not needed here
self.runqonce()
self.memdumpsql()
self.showprofile()
# restore the original db and import again
# if we wanted to, we could re-import the SQL generated in the first pass to be
# blazing fast. But for the present just re-import the lot.
settings.DATABASES['default'] = dbdefault
settings.DATABASES['default']['ENGINE'] = dbengine
settings.DATABASES['default']['NAME'] = dbname
print("-- ", settings.DATABASES['default']['NAME'], settings.DATABASES['default']['ENGINE'])
django.db.close_old_connections() # maybe not needed here
for j in self.results_order:
self.results[j].pop() # throw away results from :memory: run
self.results[j].append(None) # append a placeholder
django.db.close_old_connections() # magic rune. works. found by looking in django.db__init__.py
#django.setup() # should this be needed?
self.runqonce() # crashes because it thinks it has no migrations to apply, when it does.
self.saveprofiles()
return True
def showprofile(self):
"""Prints out the time it took to run the jobqueue
"""
for k in self.results_order:
if k =="dirsredirect":
break
elif k =="syncuser":
break
elif k =="test":
break
elif k =="date":
print(" days ago ", end=' ')
else:
print('%10s (s)' % k, end=' ')
percen=0
r = self.results[k]
for i in range(len(r)):
if k == "runlabel":
if r[i]:
rp = r[i]
else:
rp = " - "
print('%8s' % rp, end=' ')
elif k =="date":
# Calculate dates as days before present
if r[i]:
if i == len(r)-1:
print(" this", end=' ')
else:
# prints one place to the left of where you expect
days = (r[i]-r[len(r)-1])/(24*60*60)
print('%8.2f' % days, end=' ')
elif r[i]:
print('%8.1f' % r[i], end=' ')
if i == len(r)-1 and r[i-1]:
percen = 100* (r[i] - r[i-1])/r[i-1]
if abs(percen) >0.1:
print('%8.1f%%' % percen, end=' ')
else:
print(" - ", end=' ')
print("")
print("\n")
return True
def usage():
print("""Usage is 'python databaseReset.py <command> [runlabel]'
where command is:
test - testing... imports people and prints profile. Deletes nothing.
profile - print the profile from previous runs. Import nothing.
reset - normal usage: clear database and reread everything from files - time-consuming
caves - read in the caves
logbooks - read in the logbooks
people - read in the people from folk.csv
QMs - read in the QM csv files (older caves only)
scans - the survey scans in all the wallets
survex - read in the survex files - all the survex blocks but not the x/y/z positions
survexpos - just the x/y/z Pos out of the survex files
survexall - both survex and survexpos
tunnel - read in the Tunnel files - which scans the survey scans too
drawings - Tunnel, QMs, scans
reinit - clear database (delete everything) and make empty tables. Import nothing.
syncuser - needed after reloading database from SQL backup
autologbooks - Not used. read in autologbooks (what are these?)
dumplogbooks - Not used. write out autologbooks (not working?)
surveyimgs - Not used. read in scans by-expo, must run after "people".
and [runlabel] is an optional string identifying this run of the script
in the stored profiling data 'import-profile.json'
if [runlabel] is absent or begins with "F-" then it will skip the :memory: pass
caves and logbooks must be run on an empty db before the others as they
set up db tables used by the others.
""")
if __name__ == "__main__":
import troggle.core.models
import sys
import django
django.setup()
if len(sys.argv)>2:
runlabel = sys.argv[len(sys.argv)-1]
else:
runlabel=None
jq = JobQueue(runlabel)
if len(sys.argv)==1:
usage()
exit()
elif "test" in sys.argv:
jq.enq("caves",import_caves)
jq.enq("people",import_people)
elif "caves" in sys.argv:
jq.enq("caves",import_caves)
elif "logbooks" in sys.argv:
jq.enq("logbooks",import_logbooks)
elif "people" in sys.argv:
jq.enq("people",import_people)
elif "QMs" in sys.argv:
jq.enq("QMs",import_QMs)
elif "reinit" in sys.argv:
jq.enq("reinit",reinit_db)
elif "reset" in sys.argv:
jq.enq("reinit",reinit_db)
jq.enq("dirsredirect",dirsredirect)
jq.enq("caves",import_caves)
jq.enq("people",import_people)
jq.enq("scans",import_surveyscans)
jq.enq("logbooks",import_logbooks)
jq.enq("QMs",import_QMs)
jq.enq("survexblks",import_survexblks)
jq.enq("survexpos",import_survexpos)
jq.enq("tunnel",import_tunnelfiles)
elif "scans" in sys.argv:
jq.enq("scans",import_surveyscans)
elif "survex" in sys.argv:
jq.enq("survexblks",import_survexblks)
elif "survexpos" in sys.argv:
jq.enq("survexpos",import_survexpos)
elif "tunnel" in sys.argv:
jq.enq("tunnel",import_tunnelfiles)
elif "survexall" in sys.argv:
jq.enq("survexblks",import_survexblks)
jq.enq("survexpos",import_survexpos)
elif "drawings" in sys.argv:
jq.enq("QMs",import_QMs)
jq.enq("scans",import_surveyscans)
jq.enq("tunnel",import_tunnelfiles)
elif "surveyimgs" in sys.argv:
jq.enq("surveyimgs",import_surveyimgs) # imports into tables which are never read
elif "autologbooks" in sys.argv: # untested in 2020
import_auto_logbooks()
elif "dumplogbooks" in sys.argv: # untested in 2020
dumplogbooks()
elif "profile" in sys.argv:
jq.loadprofiles()
jq.showprofile()
exit()
elif "help" in sys.argv:
usage()
exit()
else:
usage()
print(("%s not recognised as a command." % sys.argv[1]))
exit()
jq.run()
jq.showprofile()
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