Jan Dittberner
3d18392b67
- drop Python 2 __future__ imports - fix tests to handle new Django and Python 3 module names - reformat changed files with black
478 lines
14 KiB
Python
478 lines
14 KiB
Python
"""
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This module contains the hosting package models.
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"""
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from __future__ import absolute_import, unicode_literals
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from django.conf import settings
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from django.db import transaction
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from django.db import models
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from django.urls import reverse
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from django.utils.encoding import python_2_unicode_compatible
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from django.utils.translation import ugettext_lazy as _, ungettext
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from model_utils import Choices
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from model_utils.models import TimeStampedModel
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from domains.models import HostingDomain
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from managemails.models import Mailbox
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from osusers.models import AdditionalGroup, Group, User as OsUser
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from userdbs.models import DB_TYPES, UserDatabase
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DISK_SPACE_UNITS = Choices((0, "M", _("MiB")), (1, "G", _("GiB")), (2, "T", _("TiB")))
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DISK_SPACE_FACTORS = ((1, None, None), (1024, 1, None), (1024 * 1024, 1024, 1))
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@python_2_unicode_compatible
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class HostingPackageBase(TimeStampedModel):
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description = models.TextField(_("description"), blank=True)
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mailboxcount = models.PositiveIntegerField(_("mailbox count"))
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diskspace = models.PositiveIntegerField(
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_("disk space"), help_text=_("disk space for the hosting package")
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)
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diskspace_unit = models.PositiveSmallIntegerField(
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_("unit of disk space"), choices=DISK_SPACE_UNITS
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)
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class Meta:
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abstract = True
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def __str__(self):
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return self.name
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class HostingPackageTemplate(HostingPackageBase):
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name = models.CharField(_("name"), max_length=128, unique=True)
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class Meta:
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verbose_name = _("Hosting package")
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verbose_name_plural = _("Hosting packages")
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class HostingOption(TimeStampedModel):
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"""
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This is the base class for several types of hosting options.
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"""
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@python_2_unicode_compatible
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class DiskSpaceOptionBase(models.Model):
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diskspace = models.PositiveIntegerField(_("disk space"))
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diskspace_unit = models.PositiveSmallIntegerField(
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_("unit of disk space"), choices=DISK_SPACE_UNITS
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)
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class Meta:
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abstract = True
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ordering = ["diskspace_unit", "diskspace"]
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verbose_name = _("Disk space option")
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verbose_name_plural = _("Disk space options")
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def __str__(self):
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return _("Additional disk space {space} {unit}").format(
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space=self.diskspace, unit=self.get_diskspace_unit_display()
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)
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class DiskSpaceOption(DiskSpaceOptionBase, HostingOption):
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"""
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This is a class for hosting options adding additional disk space to
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existing hosting packages.
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"""
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class Meta:
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unique_together = ["diskspace", "diskspace_unit"]
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@python_2_unicode_compatible
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class UserDatabaseOptionBase(models.Model):
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number = models.PositiveIntegerField(_("number of databases"), default=1)
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db_type = models.PositiveSmallIntegerField(_("database type"), choices=DB_TYPES)
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class Meta:
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abstract = True
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ordering = ["db_type", "number"]
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verbose_name = _("Database option")
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verbose_name_plural = _("Database options")
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def __str__(self):
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return ungettext(
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"{type} database", "{count} {type} databases", self.number
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).format(type=self.get_db_type_display(), count=self.number)
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class UserDatabaseOption(UserDatabaseOptionBase, HostingOption):
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"""
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This is a class for hosting options adding user databases to existing
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hosting packages.
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"""
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class Meta:
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unique_together = ["number", "db_type"]
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@python_2_unicode_compatible
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class MailboxOptionBase(models.Model):
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"""
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Base class for mailbox options.
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"""
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number = models.PositiveIntegerField(_("number of mailboxes"), unique=True)
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class Meta:
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abstract = True
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ordering = ["number"]
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verbose_name = _("Mailbox option")
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verbose_name_plural = _("Mailbox options")
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def __str__(self):
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return ungettext(
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"{count} additional mailbox", "{count} additional mailboxes", self.number
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).format(count=self.number)
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class MailboxOption(MailboxOptionBase, HostingOption):
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"""
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This is a class for hosting options adding more mailboxes to existing
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hosting packages.
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"""
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class CustomerHostingPackageManager(models.Manager):
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"""
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This is the default manager implementation for
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:py:class:`CustomerHostingPackage`.
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"""
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def create_from_template(self, customer, template, name, **kwargs):
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"""
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Use this method to create a new :py:class:`CustomerHostingPackage` from
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a :py:class:`HostingPackageTemplate`.
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The method copies data from the template to the new
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:py:class:`CustomerHostingPackage` instance.
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:param customer: a Django user representing a customer
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:param template: a :py:class:`HostingPackageTemplate`
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:param str name: the name of the hosting package there must only be
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one hosting package of this name for each customer
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:return: customer hosting package
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:rtype: :py:class:`CustomerHostingPackage`
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"""
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package = CustomerHostingPackage(
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customer=customer, template=template, name=name
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)
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package.description = template.description
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package.copy_template_attributes()
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if "commit" in kwargs and kwargs["commit"] is True:
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package.save(**kwargs)
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return package
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@python_2_unicode_compatible
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class CustomerHostingPackage(HostingPackageBase):
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"""
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This class defines customer specific hosting packages.
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"""
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customer = models.ForeignKey(
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settings.AUTH_USER_MODEL, verbose_name=_("customer"), on_delete=models.CASCADE
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)
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template = models.ForeignKey(
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HostingPackageTemplate,
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verbose_name=_("hosting package template"),
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help_text=_(
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"The hosting package template that this hosting package is based" " on"
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),
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on_delete=models.CASCADE,
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)
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name = models.CharField(_("name"), max_length=128)
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osuser = models.OneToOneField(
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OsUser,
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verbose_name=_("Operating system user"),
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blank=True,
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null=True,
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on_delete=models.CASCADE,
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)
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objects = CustomerHostingPackageManager()
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class Meta:
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unique_together = ["customer", "name"]
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verbose_name = _("customer hosting package")
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verbose_name_plural = _("customer hosting packages")
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def __str__(self):
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return _("{name} for {customer}").format(name=self.name, customer=self.customer)
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def get_absolute_url(self):
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return reverse(
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"hosting_package_details",
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kwargs={"user": self.customer.username, "pk": self.id},
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)
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def copy_template_attributes(self):
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"""
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Copy the attributes of the hosting package's template to the package.
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"""
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for attrname in ("diskspace", "diskspace_unit", "mailboxcount"):
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setattr(self, attrname, getattr(self.template, attrname))
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def get_hostingoptions(self):
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opts = []
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for opt_type in [
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CustomerDiskSpaceOption,
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CustomerMailboxOption,
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CustomerUserDatabaseOption,
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]:
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opts.extend(opt_type.objects.filter(hosting_package=self))
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return opts
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hostingoptions = property(get_hostingoptions)
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def get_disk_space(self, unit=None):
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"""
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Get the total disk space reserved for this hosting package and all its
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additional disk space options.
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:param unit: value from :py:data:`DISK_SPACE_UNITS` or :py:const:`None`
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:return: disk space in unit or bytes (if parameter unit is
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:py:const:`None`)
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:rtype: int
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"""
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diskspace = self.diskspace
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min_unit = self.diskspace_unit
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options = CustomerDiskSpaceOption.objects.filter(hosting_package=self)
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for option in options:
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if option.diskspace_unit == min_unit:
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diskspace += option.diskspace
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elif option.diskspace_unit > min_unit:
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diskspace += (
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DISK_SPACE_FACTORS[option.diskspace_unit][min_unit]
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* option.diskspace
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)
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else:
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diskspace = (
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DISK_SPACE_FACTORS[min_unit][option.diskspace_unit] * diskspace
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) + option.diskspace
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min_unit = option.diskspace_unit
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if unit is None:
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return DISK_SPACE_FACTORS[min_unit][0] * diskspace * 1024 ** 2
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if unit > min_unit:
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return DISK_SPACE_FACTORS[unit][min_unit] * diskspace
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return DISK_SPACE_FACTORS[min_unit][unit] * diskspace
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def get_package_space(self, unit=None):
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"""
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Get the total disk space reserved for this package without looking at
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any additional dis space options.
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:param unit: value from :py:data:`DISK_SPACE_UNITS` or :py:const:`None`
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:return: disk space in unit or bytes (if parameter unit is
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:py:const:`None`)
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:rtype: int
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"""
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if unit is None:
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return (
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DISK_SPACE_FACTORS[self.diskspace_unit][0] * self.diskspace * 1024 ** 2
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)
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if unit > self.diskspace_unit:
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return DISK_SPACE_FACTORS[unit][self.diskspace_unit] * self.diskspace
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return DISK_SPACE_FACTORS[self.diskspace_unit][unit] * self.diskspace
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def get_quota(self):
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soft = 1024 * self.get_disk_space(DISK_SPACE_UNITS.M)
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hard = soft * 105 // 100
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return (soft, hard)
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def get_mailboxes(self):
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if self.osuser:
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return Mailbox.objects.filter(osuser=self.osuser).all()
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mailboxes = property(get_mailboxes)
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def get_used_mailbox_count(self):
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"""
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Get the number of used mailboxes for this hosting package.
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"""
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if self.osuser:
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return Mailbox.objects.filter(osuser=self.osuser).count()
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return 0
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used_mailbox_count = property(get_used_mailbox_count)
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def get_mailbox_count(self):
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"""
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Get the number of mailboxes provided by this hosting package and all
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of its mailbox options.
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"""
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result = CustomerMailboxOption.objects.filter(hosting_package=self).aggregate(
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mailbox_sum=models.Sum("number")
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)
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return self.mailboxcount + (result["mailbox_sum"] or 0)
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mailbox_count = property(get_mailbox_count)
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def may_add_mailbox(self):
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return self.used_mailbox_count < self.mailbox_count
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def get_databases(self):
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"""
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Get the number of user databases provided by user database hosting
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options for this hosting package.
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"""
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return (
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CustomerUserDatabaseOption.objects.values("db_type")
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.filter(hosting_package=self)
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.annotate(number=models.Sum("number"))
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.all()
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)
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def get_databases_flat(self):
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if self.osuser:
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return UserDatabase.objects.filter(db_user__osuser=self.osuser).all()
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databases = property(get_databases_flat)
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def may_add_database(self):
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return (
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CustomerUserDatabaseOption.objects.filter(hosting_package=self).count()
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> UserDatabase.objects.filter(db_user__osuser=self.osuser).count()
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)
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@transaction.atomic
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def save(self, *args, **kwargs):
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"""
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Save the hosting package to the database.
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If this is a new hosting package a new operating system user is
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created and assigned to the hosting package.
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:param args: positional arguments to be passed on to
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:py:meth:`django.db.Model.save`
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:param kwargs: keyword arguments to be passed on to
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:py:meth:`django.db.Model.save`
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:return: self
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:rtype: :py:class:`CustomerHostingPackage`
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"""
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if self.pk is None:
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self.copy_template_attributes()
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self.osuser = OsUser.objects.create_user(self.customer)
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for group in settings.OSUSER_DEFAULT_GROUPS:
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AdditionalGroup.objects.create(
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user=self.osuser, group=Group.objects.get(groupname=group)
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)
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return super(CustomerHostingPackage, self).save(*args, **kwargs)
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@python_2_unicode_compatible
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class CustomerHostingPackageDomain(TimeStampedModel):
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"""
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This class defines the relationship from a hosting package to a hosting
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domain.
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"""
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hosting_package = models.ForeignKey(
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CustomerHostingPackage,
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verbose_name=_("hosting package"),
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related_name="domains",
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on_delete=models.CASCADE,
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)
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domain = models.OneToOneField(
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HostingDomain, verbose_name=_("hosting domain"), on_delete=models.CASCADE
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)
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def __str__(self):
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return self.domain.domain
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def is_usable_for_email(self):
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"""
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Tells wether the related domain is usable for email addresses.
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"""
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return self.domain.maildomain is not None
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class CustomerHostingPackageOption(TimeStampedModel):
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"""
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This class defines options for customer hosting packages.
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"""
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hosting_package = models.ForeignKey(
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CustomerHostingPackage,
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verbose_name=_("hosting package"),
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on_delete=models.CASCADE,
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)
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class Meta:
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verbose_name = _("customer hosting option")
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verbose_name_plural = _("customer hosting options")
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class CustomerDiskSpaceOption(DiskSpaceOptionBase, CustomerHostingPackageOption):
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"""
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This is a class for customer hosting package options adding additional disk
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space to existing customer hosting package.
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"""
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template = models.ForeignKey(
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DiskSpaceOption,
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verbose_name=_("disk space option template"),
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help_text=_(
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"The disk space option template that this disk space option is" " based on"
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),
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on_delete=models.CASCADE,
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)
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class CustomerUserDatabaseOption(UserDatabaseOptionBase, CustomerHostingPackageOption):
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"""
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This is a class for customer hosting package options adding user databases
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to existing customer hosting packages.
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"""
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template = models.ForeignKey(
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UserDatabaseOption,
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verbose_name=_("user database option template"),
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help_text=_(
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"The user database option template that this database option is" " based on"
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),
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on_delete=models.CASCADE,
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)
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class CustomerMailboxOption(MailboxOptionBase, CustomerHostingPackageOption):
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"""
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This is a class for customer hosting package options adding additional
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mailboxes to existing customer hosting packages.
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"""
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template = models.ForeignKey(
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MailboxOption,
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verbose_name=_("mailbox option template"),
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help_text=_("The mailbox option template that this mailbox option is based on"),
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on_delete=models.CASCADE,
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)
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