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import json
import os
import askbot.models as askbot
import dateutil
from pprint import pprint
from itertools import groupby
from askbot.conf import settings as askbot_settings
from django.core.management.base import BaseCommand, CommandError
from django.db.utils import IntegrityError
from django.core.exceptions import ValidationError
MAX_TRIES = 10
class Command(BaseCommand):
help = "Loads OSQA data from json database dump"
def handle(self, *arg, **kwarg):
if len(arg) < 1 or not os.path.isfile(arg[0]):
raise CommandError('Error: first argument must be a json file with the osqa forum data')
data = []
with open(arg[0]) as f:
data = json.load(f)
grouped = dict([(k,list(g)) for k,g in groupby(data, lambda x: x['model'])])
self.nodes = {}
self.tags = {}
self.users = {}
askbot_settings.update('LIMIT_ONE_ANSWER_PER_USER', False)
print('Migrating users...')
self.migrate_users(grouped['auth.user'])
print('done.\n\n')
print('Migrating tags...')
self.migrate_tags(grouped['forum.tag'])
print('done.\n\n')
print('Migrating questions, answers and comments...')
self.migrate_qac(grouped['forum.node'])
print('done.')
print('Migrating revisions...')
self.migrate_revisions(grouped['forum.noderevision'])
print('done.')
print('Migrating Actions...')
self.migrate_actions(grouped['forum.action'])
print('done.')
def migrate_users(self, entries_raw):
for data_raw in entries_raw:
osqa = data_raw['fields']
try:
user = askbot.User.objects.get(username = osqa['username'])
print("already exist")
except askbot.User.DoesNotExist:
user = askbot.User()
user.username = osqa['username']
user.realname = "%s %s" % (osqa['first_name'],osqa['last_name'])
user.id = data_raw['pk']
user.email = osqa['email']
user.reputation = 1 #it's actually re-computed
user.last_login = osqa['last_login']
user.last_seen = osqa['last_login']
user.is_active = True
user.set_unusable_password() # we use ldap
if osqa['is_superuser']:
user.set_admin_status()
print("Creating User: %s...\t" % user.username),
try:
user.save()
print("success")
except IntegrityError:
print('error')
self.users[data_raw['pk']] = user
def migrate_tags(self, entries_raw):
for data_raw in entries_raw:
osqa = data_raw['fields']
print("Creating Tag: %s..." % osqa['name']),
try:
tag = askbot.Tag.objects.get(name=osqa['name'])
print("already exists")
except askbot.Tag.DoesNotExist:
author_id = osqa['created_by']
author = self.users[author_id]
tag = askbot.Tag(osqa['name'], created_by = author)
print("success")
self.tags[data_raw['pk']] = tag
def migrate_qac(self, entries_raw):
amount = len(entries_raw)
success = 0
while len(entries_raw) > 0:
data_raw = entries_raw.pop(0)
osqa = data_raw['fields']
try:
author_id = osqa['author']
author = self.users[author_id]
added_at = dateutil.parser.parse(osqa['added_at'])
except KeyError:
continue
post_type = osqa['node_type']
if post_type == 'question':
print("Creating Question: %s...\t" % osqa['title']),
try:
if osqa['state_string'] == "(deleted)":
print("skipped - (deleted question)")
continue
q = self.nodes[osqa['parent']]
q.title = osqa['title'],
q.body_text = osqa['body'],
q.save()
except KeyError:
try:
q = author.post_question(
title = osqa['title'],
body_text = osqa['body'],
tags = osqa['tagnames'] or None,
wiki = False,
timestamp = added_at
)
q.thread.view_count = osqa['extra_count']
q.save()
except ValidationError:
continue
self.nodes[data_raw['pk']] = q
print('success')
success += 1
elif post_type == 'answer':
try:
print("Creating Answer by %s...\t" % author.username),
q = self.nodes[osqa['parent']]
p = author.post_answer(
question = q,
body_text = osqa['body'],
timestamp = added_at
)
self.nodes[data_raw['pk']] = p
print('success')
success += 1
except ValidationError:
print("validation error")
except KeyError:
if 'tried' in data_raw:
if data_raw['tried'] > MAX_TRIES:
pprint(data_raw)
print("error", self.nodes.keys())
continue
else:
data_raw['tried'] = 1
print("skipping")#, osqa['parent'], self.nodes.keys())
data_raw['tried'] += 1
entries_raw.append(data_raw)
elif post_type == 'comment':
try:
print("Creating Comment by %s...\t" % author.username),
q = self.nodes[osqa['parent']]
q.add_comment(
comment = osqa['body'],
added_at = osqa['added_at'],
user = author
)
self.nodes[data_raw['pk']] = q
success += 1
print('success')
except ValidationError:
print("validation error")
except KeyError:
if 'tried' in data_raw:
if data_raw['tried'] > MAX_TRIES:
pprint(data_raw)
print("error", self.nodes.keys())
continue
else:
data_raw['tried'] = 1
print("skipping")#, osqa['parent'], self.nodes.keys())
data_raw['tried'] += 1
entries_raw.append(data_raw)
else:
print("unknown type:",osqa['node_type'])
print("Added %d of %d questions,comments or answers" % (success,amount))
def migrate_revisions(self, entries_raw):
for data_raw in entries_raw:
osqa = data_raw['fields']
try:
print("Creating revision: %d...\t" % data_raw['pk']),
p = self.nodes[osqa['node']]
p.title = osqa['title'],
p.body_text = osqa['body'],
p.save()
print("success")
except KeyError:
print("not found")
def migrate_actions(self, raw):
valid = {'voteup' : 'upvote', 'votedown':'downvote',
'acceptanswer':'accept_best_answer'}
accepted = [x for x in raw if x['fields']['action_type'] in valid.keys()]
for action in accepted:
osqa = action['fields']
try:
print("Adding action %s..." % osqa['action_type']),
post = self.nodes[osqa['node']]
user_id = osqa['user']
user = self.users[user_id]
vote_method = getattr(askbot.User, valid[osqa['action_type']])
vote_method(
user, post,
timestamp = dateutil.parser.parse(osqa['action_date']),
force = True
)
print("success")
except:
print("error")
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