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from datetime import datetime, date, timedelta
from decimal import Decimal
import threading
from django.core.exceptions import ImproperlyConfigured
try:
from django.utils.timezone import now
except ImportError:
now = datetime.now
try:
from django.contrib.gis.geos import *
except ImproperlyConfigured:
pass # environment without geo libs
except Exception:
pass # Avoid errors like GDALException
from django_dynamic_fixture.fixture_algorithms.default_fixture import BaseDataFixture, GeoDjangoFixtureMixin, PostgresFixtureMixin
from django_dynamic_fixture.django_helper import field_is_unique
class AutoDataFiller:
"""
Responsibility: generate a unique and sequential value for each key.
"""
def __init__(self):
self.__data_controller_map = {} # key => counter
self.__locks = {} # key => lock
# synchronized by key
def next(self, key):
if key not in self.__data_controller_map:
self.__data_controller_map[key] = 0
self.__locks[key] = threading.RLock()
self.__locks[key].acquire()
self.__data_controller_map[key] += 1
value = self.__data_controller_map[key]
self.__locks[key].release()
return value
def current(self, key):
if key not in self.__data_controller_map:
self.next(key)
return self.__data_controller_map[key]
class SequentialDataFixture(BaseDataFixture, GeoDjangoFixtureMixin, PostgresFixtureMixin):
def __init__(self):
super().__init__()
self.filler = AutoDataFiller()
def get_value(self, field, key):
return self.filler.next(key)
# NUMBERS
def integerfield_config(self, field, key):
return self.get_value(field, key)
def smallintegerfield_config(self, field, key):
return self.integerfield_config(field, key)
def positiveintegerfield_config(self, field, key):
return self.integerfield_config(field, key)
def positivesmallintegerfield_config(self, field, key):
return self.integerfield_config(field, key)
def bigintegerfield_config(self, field, key):
return self.integerfield_config(field, key)
def floatfield_config(self, field, key):
return float(self.get_value(field, key))
def decimalfield_config(self, field, key):
data = self.get_value(field, key)
number_of_digits = field.max_digits - field.decimal_places
max_value = 10 ** number_of_digits
data = data % max_value
return Decimal(str(data))
# STRINGS
def charfield_config(self, field, key):
data = self.get_value(field, key)
if field.max_length:
max_value = (10 ** field.max_length) - 1
data = str(data % max_value)
data = data[:field.max_length]
else:
data = str(data)
return data
def textfield_config(self, field, key):
return self.charfield_config(field, key)
def slugfield_config(self, field, key):
return self.charfield_config(field, key)
def commaseparatedintegerfield_config(self, field, key):
return self.charfield_config(field, key)
# BOOLEAN
def booleanfield_config(self, field, key):
return False
def nullbooleanfield_config(self, field, key):
return None
# DATE/TIME RELATED
def datefield_config(self, field, key):
data = self.get_value(field, key)
return date.today() - timedelta(days=data)
def timefield_config(self, field, key):
data = self.get_value(field, key)
return (now() - timedelta(seconds=data)).time()
def datetimefield_config(self, field, key):
data = self.get_value(field, key)
return now() - timedelta(seconds=data)
# FORMATTED STRINGS
def emailfield_config(self, field, key):
return f'a{self.get_value(field, key)}@dynamicfixture.com'
def urlfield_config(self, field, key):
return f'http://dynamicfixture{self.get_value(field, key)}.com'
# Deprecated in Django >= 1.7
def ipaddressfield_config(self, field, key):
# TODO: better workaround (this suppose ip field is not unique)
data = self.get_value(field, key)
a = '1'
b = '1'
c = '1'
d = data % 256
return f'{a}.{b}.{c}.{d}'
def xmlfield_config(self, field, key):
return f'<a>{self.get_value(field, key)}</a>'
# FILES
def filepathfield_config(self, field, key):
return str(self.get_value(field, key))
def filefield_config(self, field, key):
return str(self.get_value(field, key))
def imagefield_config(self, field, key):
return str(self.get_value(field, key))
class GlobalSequentialDataFixture(SequentialDataFixture):
def get_value(self, field, key):
return self.filler.next('ddf-global-key')
class StaticSequentialDataFixture(SequentialDataFixture):
def get_value(self, field, key):
if field_is_unique(field):
return self.filler.next(key)
else:
return self.filler.current(key)
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