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from collections import namedtuple
from django.db import models
from django.db.models.signals import pre_save
from django.contrib.auth.models import User
from main.models import Arch, Repo, Package
from main.utils import set_created_field
class PackageRelation(models.Model):
'''
Represents maintainership (or interest) in a package by a given developer.
It is not a true foreign key to packages as we want to key off
pkgbase/pkgname instead, as well as preserve this information across
package deletes, adds, and in all repositories.
'''
MAINTAINER = 1
WATCHER = 2
TYPE_CHOICES = (
(MAINTAINER, 'Maintainer'),
(WATCHER, 'Watcher'),
)
pkgbase = models.CharField(max_length=255)
user = models.ForeignKey(User, related_name="package_relations")
type = models.PositiveIntegerField(choices=TYPE_CHOICES, default=MAINTAINER)
created = models.DateTimeField(editable=False)
def get_associated_packages(self):
# TODO: delayed import to avoid circular reference
from main.models import Package
return Package.objects.normal().filter(pkgbase=self.pkgbase)
def repositories(self):
packages = self.get_associated_packages()
return sorted(set([p.repo for p in packages]))
def __unicode__(self):
return u'%s: %s (%s)' % (
self.pkgbase, self.user, self.get_type_display())
class Meta:
unique_together = (('pkgbase', 'user', 'type'),)
class SignoffSpecificationManager(models.Manager):
def get_from_package(self, pkg):
'''Utility method to pull all relevant name-version fields from a
package and get a matching signoff specification.'''
return self.get(
pkgbase=pkg.pkgbase, pkgver=pkg.pkgver, pkgrel=pkg.pkgrel,
epoch=pkg.epoch, arch=pkg.arch, repo=pkg.repo)
def get_or_default_from_package(self, pkg):
'''utility method to pull all relevant name-version fields from a
package and get a matching signoff specification, or return the default
base case.'''
try:
return self.get(
pkgbase=pkg.pkgbase, pkgver=pkg.pkgver, pkgrel=pkg.pkgrel,
epoch=pkg.epoch, arch=pkg.arch, repo=pkg.repo)
except SignoffSpecification.DoesNotExist:
return DEFAULT_SIGNOFF_SPEC
class SignoffSpecification(models.Model):
'''
A specification for the signoff policy for this particular revision of a
package. The default is requiring two signoffs for a given package. These
are created only if necessary; e.g., if one wanted to override the
required=2 attribute, otherwise a sane default object is used.
'''
pkgbase = models.CharField(max_length=255, db_index=True)
pkgver = models.CharField(max_length=255)
pkgrel = models.CharField(max_length=255)
epoch = models.PositiveIntegerField(default=0)
arch = models.ForeignKey(Arch)
repo = models.ForeignKey(Repo)
user = models.ForeignKey(User, null=True)
created = models.DateTimeField(editable=False)
required = models.PositiveIntegerField(default=2,
help_text="How many signoffs are required for this package?")
enabled = models.BooleanField(default=True,
help_text="Is this package eligible for signoffs?")
known_bad = models.BooleanField(default=False,
help_text="Is package is known to be broken in some way?")
comments = models.TextField(null=True, blank=True)
objects = SignoffSpecificationManager()
@property
def full_version(self):
if self.epoch > 0:
return u'%d:%s-%s' % (self.epoch, self.pkgver, self.pkgrel)
return u'%s-%s' % (self.pkgver, self.pkgrel)
def __unicode__(self):
return u'%s-%s' % (self.pkgbase, self.full_version)
# fake default signoff spec when we don't have a persisted one in the database
FakeSignoffSpecification = namedtuple('FakeSignoffSpecification',
('required', 'enabled', 'known_bad', 'comments'))
DEFAULT_SIGNOFF_SPEC = FakeSignoffSpecification(2, True, False, u'')
class SignoffManager(models.Manager):
def get_from_package(self, pkg, user, revoked=False):
'''Utility method to pull all relevant name-version fields from a
package and get a matching signoff.'''
not_revoked = not revoked
return self.get(
pkgbase=pkg.pkgbase, pkgver=pkg.pkgver, pkgrel=pkg.pkgrel,
epoch=pkg.epoch, arch=pkg.arch, repo=pkg.repo,
revoked__isnull=not_revoked, user=user)
def get_or_create_from_package(self, pkg, user):
'''Utility method to pull all relevant name-version fields from a
package and get or create a matching signoff.'''
return self.get_or_create(
pkgbase=pkg.pkgbase, pkgver=pkg.pkgver, pkgrel=pkg.pkgrel,
epoch=pkg.epoch, arch=pkg.arch, repo=pkg.repo,
revoked=None, user=user)
def for_package(self, pkg):
return self.select_related('user').filter(
pkgbase=pkg.pkgbase, pkgver=pkg.pkgver, pkgrel=pkg.pkgrel,
epoch=pkg.epoch, arch=pkg.arch, repo=pkg.repo)
class Signoff(models.Model):
'''
A signoff for a package (by pkgbase) at a given point in time. These are
not keyed directly to a Package object so they don't ever get deleted when
Packages come and go from testing repositories.
'''
pkgbase = models.CharField(max_length=255, db_index=True)
pkgver = models.CharField(max_length=255)
pkgrel = models.CharField(max_length=255)
epoch = models.PositiveIntegerField(default=0)
arch = models.ForeignKey(Arch)
repo = models.ForeignKey(Repo)
user = models.ForeignKey(User, related_name="package_signoffs")
created = models.DateTimeField(editable=False)
revoked = models.DateTimeField(null=True)
comments = models.TextField(null=True, blank=True)
objects = SignoffManager()
@property
def packages(self):
# TODO: delayed import to avoid circular reference
from main.models import Package
return Package.objects.normal().filter(pkgbase=self.pkgbase,
pkgver=self.pkgver, pkgrel=self.pkgrel, epoch=self.epoch,
arch=self.arch, repo=self.repo)
@property
def full_version(self):
if self.epoch > 0:
return u'%d:%s-%s' % (self.epoch, self.pkgver, self.pkgrel)
return u'%s-%s' % (self.pkgver, self.pkgrel)
def __unicode__(self):
revoked = u''
if self.revoked:
revoked = u' (revoked)'
return u'%s-%s: %s%s' % (
self.pkgbase, self.full_version, self.user, revoked)
class FlagRequest(models.Model):
'''
A notification the package is out-of-date submitted through the web site.
'''
user = models.ForeignKey(User, blank=True, null=True)
user_email = models.EmailField('email address')
created = models.DateTimeField(editable=False)
# Great work, Django... https://code.djangoproject.com/ticket/18212
ip_address = models.GenericIPAddressField(verbose_name='IP address',
unpack_ipv4=True)
pkgbase = models.CharField(max_length=255, db_index=True)
version = models.CharField(max_length=255, default='')
repo = models.ForeignKey(Repo)
num_packages = models.PositiveIntegerField('number of packages', default=1)
message = models.TextField('message to developer', blank=True)
is_spam = models.BooleanField(default=False,
help_text="Is this comment from a real person?")
is_legitimate = models.BooleanField(default=True,
help_text="Is this actually an out-of-date flag request?")
class Meta:
get_latest_by = 'created'
def who(self):
if self.user:
return self.user.get_full_name()
return self.user_email
def __unicode__(self):
return u'%s from %s on %s' % (self.pkgbase, self.who(), self.created)
class PackageGroup(models.Model):
'''
Represents a group a package is in. There is no actual group entity,
only names that link to given packages.
'''
pkg = models.ForeignKey('main.Package', related_name='groups')
name = models.CharField(max_length=255, db_index=True)
def __unicode__(self):
return "%s: %s" % (self.name, self.pkg)
class License(models.Model):
pkg = models.ForeignKey('main.Package', related_name='licenses')
name = models.CharField(max_length=255)
def __unicode__(self):
return self.name
class Meta:
ordering = ['name']
class RelatedToBase(models.Model):
'''A base class for conflicts/provides/replaces/etc.'''
name = models.CharField(max_length=255, db_index=True)
version = models.CharField(max_length=255, default='')
def get_best_satisfier(self):
'''Find a satisfier for this related package that best matches the
given criteria. It will not search provisions, but will find packages
named and matching repo characteristics if possible.'''
# NOTE: this is cribbed directly from the PackageDepend method of the
# same name. Really, all of these things could use the same method if
# the PackageDepend class was moved here and field names were changed
# to match the layout we use here.
pkgs = Package.objects.normal().filter(pkgname=self.name)
if not self.pkg.arch.agnostic:
# make sure we match architectures if possible
arches = self.pkg.applicable_arches()
pkgs = pkgs.filter(arch__in=arches)
if len(pkgs) == 0:
# couldn't find a package in the DB
# it should be a virtual depend (or a removed package)
return None
if len(pkgs) == 1:
return pkgs[0]
# more than one package, see if we can't shrink it down
# grab the first though in case we fail
pkg = pkgs[0]
# prevents yet more DB queries, these lists should be short;
# after each grab the best available in case we remove all entries
pkgs = [p for p in pkgs if p.repo.staging == self.pkg.repo.staging]
if len(pkgs) > 0:
pkg = pkgs[0]
pkgs = [p for p in pkgs if p.repo.testing == self.pkg.repo.testing]
if len(pkgs) > 0:
pkg = pkgs[0]
return pkg
def __unicode__(self):
if self.version:
return u'%s%s%s' % (self.name, self.comparison, self.version)
return self.name
class Meta:
abstract = True
ordering = ['name']
class Conflict(RelatedToBase):
pkg = models.ForeignKey('main.Package', related_name='conflicts')
comparison = models.CharField(max_length=255, default='')
class Provision(RelatedToBase):
pkg = models.ForeignKey('main.Package', related_name='provides')
# comparison must be '=' for provides
@property
def comparison(self):
if self.version is not None and self.version != '':
return '='
return None
class Replacement(RelatedToBase):
pkg = models.ForeignKey('main.Package', related_name='replaces')
comparison = models.CharField(max_length=255, default='')
# hook up some signals
for sender in (PackageRelation, SignoffSpecification, Signoff):
pre_save.connect(set_created_field, sender=sender,
dispatch_uid="packages.models")
# vim: set ts=4 sw=4 et:
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