PyInventory/inventory/management/commands/seed_data.py

136 wiersze
4.7 KiB
Python

import itertools
import logging
from collections import Counter
from django.contrib.auth.hashers import UNUSABLE_PASSWORD_PREFIX
from django.contrib.auth.models import User
from django.core.management.base import BaseCommand
from inventory.models import ItemModel, LocationModel
SEED_DATA_USER_PREFIX = 'seed-data-user-'
class SetupLogger:
def __init__(self, level):
self.level = level
def __enter__(self):
self.old_level = logging.root.manager.disable
logging.disable(self.level)
def __exit__(self, exit_type, exit_value, exit_traceback):
logging.disable(self.old_level)
def iter_location_chain(user, location_count):
room_no = itertools.count(start=1)
cupboard_no = itertools.count(start=1)
drawer_no = itertools.count(start=1)
location_no = 0
while True:
room = LocationModel.objects.create(user=user, name=f'Room {next(room_no)}')
room.full_clean()
for _ in range(2):
cupboard = LocationModel.objects.create(user=user, name=f'Cupboard {next(cupboard_no)}', parent=room)
cupboard.full_clean()
for _ in range(2):
drawer = LocationModel.objects.create(user=user, name=f'Drawer {next(drawer_no)}', parent=cupboard)
drawer.full_clean()
yield drawer
location_no += 1
if location_no >= location_count:
return
class ItemCreator:
def __init__(self):
self.equipment_no = itertools.count(start=1)
self.item_no = itertools.count(start=1)
self.part_no = itertools.count(start=1)
self.part_per_location = Counter()
def create_items(self, user, location, item_count):
assert user
assert location
while True:
equipment = ItemModel.objects.create(
user=user,
location=location,
name=f'Equipment {next(self.equipment_no):03}',
)
equipment.full_clean()
yield equipment
while True:
item = ItemModel.objects.create(
user=user,
location=location,
name=f'Item {next(self.item_no):03}',
parent=equipment,
)
item.full_clean()
yield item
while True:
part = ItemModel.objects.create(
user=user,
location=location,
name=f'Part {next(self.part_no):03}',
parent=item,
)
part.full_clean()
yield part
self.part_per_location[location] += 1
if self.part_per_location[location] >= item_count:
return
class Command(BaseCommand):
help = 'Fill database with example data'
def add_arguments(self, parser):
parser.add_argument('--user-count', type=int, default=3, choices=range(1, 10), help='User count')
parser.add_argument('--location-count', type=int, default=3, choices=range(1, 20), help='Location count')
parser.add_argument('--item-count', type=int, default=4, choices=range(1, 40), help='Item count')
def handle(self, **options):
self.stdout.write(self.help)
user_count = options['user_count']
location_count = options['location_count']
item_count = options['item_count']
verbosity = options['verbosity']
if verbosity > 2:
log_level = logging.DEBUG
else:
log_level = logging.WARNING
with SetupLogger(level=log_level):
existing_users = User.objects.filter(username__startswith=SEED_DATA_USER_PREFIX)
for user in existing_users:
self.stdout.write(f'Clean data from user {user}...')
info = user.delete()
self.stdout.write(f'done: {info}')
item_creator = ItemCreator()
for user_no in range(1, user_count + 1):
self.stdout.write('_' * 100)
user = User.objects.create_user(
username=f'{SEED_DATA_USER_PREFIX}{user_no}',
email=f'{SEED_DATA_USER_PREFIX}{user_no}@test.tld',
password=f'{UNUSABLE_PASSWORD_PREFIX} no password',
)
self.stdout.write(f'Create seed data for user {user}')
for location in iter_location_chain(user, location_count):
for item in item_creator.create_items(user, location, item_count):
self.stdout.write(f'{location} | {item}')
self.stdout.write('\nSeed data created.')