django-orchestra-test/orchestra/contrib/webapps/models.py

141 lines
4.5 KiB
Python

import os
from collections import OrderedDict
from django.db import models
from django.db.models.signals import pre_save, pre_delete
from django.dispatch import receiver
from django.utils.functional import cached_property
from django.utils.translation import ugettext_lazy as _
from jsonfield import JSONField
from orchestra.core import validators, services
from orchestra.utils.functional import cached
from . import settings
from .fields import VirtualDatabaseRelation, VirtualDatabaseUserRelation
from .options import AppOption
from .types import AppType
class WebApp(models.Model):
""" Represents a web application """
name = models.CharField(_("name"), max_length=128, validators=[validators.validate_name],
help_text=_("The app will be installed in %s") % settings.WEBAPPS_BASE_DIR)
type = models.CharField(_("type"), max_length=32, choices=AppType.get_choices())
account = models.ForeignKey('accounts.Account', verbose_name=_("Account"),
related_name='webapps')
data = JSONField(_("data"), blank=True, default={},
help_text=_("Extra information dependent of each service."))
# CMS webapps usually need a database and dbuser, with these virtual fields we tell the ORM to delete them
databases = VirtualDatabaseRelation('databases.Database')
databaseusers = VirtualDatabaseUserRelation('databases.DatabaseUser')
class Meta:
unique_together = ('name', 'account')
verbose_name = _("Web App")
verbose_name_plural = _("Web Apps")
def __str__(self):
return self.name
def get_description(self):
return self.get_type_display()
@cached_property
def type_class(self):
return AppType.get(self.type)
@cached_property
def type_instance(self):
""" Per request lived type_instance """
return self.type_class(self)
def clean(self):
apptype = self.type_instance
apptype.validate()
self.data = apptype.clean_data()
@cached
def get_options(self, merge=False):
if merge:
options = OrderedDict()
qs = WebAppOption.objects.filter(webapp__account=self.account, webapp__type=self.type)
for name, value in qs.values_list('name', 'value').order_by('name'):
if name in options:
options[name] = max(options[name], value)
else:
options[name] = value
return options
return OrderedDict(self.options.values_list('name', 'value').order_by('name'))
def get_directive(self):
return self.type_instance.get_directive()
def get_path(self):
context = {
'home': self.get_user().get_home(),
'app_name': self.name,
}
path = settings.WEBAPPS_BASE_DIR % context
public_root = self.options.filter(name='public-root').first()
if public_root:
path = os.path.join(path, public_root.value)
return os.path.normpath(path.replace('//', '/'))
def get_user(self):
return self.account.main_systemuser
def get_username(self):
return self.get_user().username
def get_groupname(self):
return self.get_username()
class WebAppOption(models.Model):
webapp = models.ForeignKey(WebApp, verbose_name=_("Web application"),
related_name='options')
name = models.CharField(_("name"), max_length=128, choices=AppType.get_options_choices())
value = models.CharField(_("value"), max_length=256)
class Meta:
unique_together = ('webapp', 'name')
verbose_name = _("option")
verbose_name_plural = _("options")
def __str__(self):
return self.name
@cached_property
def option_class(self):
return AppOption.get(self.name)
@cached_property
def option_instance(self):
""" Per request lived option instance """
return self.option_class(self)
def clean(self):
self.option_instance.validate()
services.register(WebApp)
# Admin bulk deletion doesn't call model.delete()
# So, signals are used instead of model method overriding
@receiver(pre_save, sender=WebApp, dispatch_uid='webapps.type.save')
def type_save(sender, *args, **kwargs):
instance = kwargs['instance']
instance.type_instance.save()
@receiver(pre_delete, sender=WebApp, dispatch_uid='webapps.type.delete')
def type_delete(sender, *args, **kwargs):
instance = kwargs['instance']
try:
instance.type_instance.delete()
except KeyError:
pass