from base64 import b64decode from datetime import datetime from itertools import groupby from pgpdump import BinaryData from django.db import models from django.contrib.auth.models import User from django.contrib.sites.models import Site from .fields import PositiveBigIntegerField from .utils import cache_function, set_created_field, utc_now class TodolistManager(models.Manager): def incomplete(self): return self.filter(todolistpkg__complete=False).order_by().distinct() class PackageManager(models.Manager): def flagged(self): """Used by dev dashboard.""" return self.filter(flag_date__isnull=False) def normal(self): return self.select_related('arch', 'repo') class Donor(models.Model): name = models.CharField(max_length=255, unique=True) visible = models.BooleanField(default=True, help_text="Should we show this donor on the public page?") created = models.DateTimeField() def __unicode__(self): return self.name class Meta: db_table = 'donors' ordering = ('name',) get_latest_by = 'when' class Arch(models.Model): name = models.CharField(max_length=255, unique=True) agnostic = models.BooleanField(default=False, help_text="Is this architecture non-platform specific?") def __unicode__(self): return self.name def __lt__(self, other): return self.name < other.name class Meta: db_table = 'arches' ordering = ['name'] verbose_name_plural = 'arches' class Repo(models.Model): name = models.CharField(max_length=255, unique=True) testing = models.BooleanField(default=False, help_text="Is this repo meant for package testing?") staging = models.BooleanField(default=False, help_text="Is this repo meant for package staging?") bugs_project = models.SmallIntegerField(default=1, help_text="Flyspray project ID for this repository.") bugs_category = models.SmallIntegerField(default=2, help_text="Flyspray category ID for this repository.") svn_root = models.CharField(max_length=64, help_text="SVN root (e.g. path) for this repository.") def __unicode__(self): return self.name def __lt__(self, other): return self.name < other.name class Meta: db_table = 'repos' ordering = ['name'] verbose_name_plural = 'repos' class Package(models.Model): repo = models.ForeignKey(Repo, related_name="packages", on_delete=models.PROTECT) arch = models.ForeignKey(Arch, related_name="packages", on_delete=models.PROTECT) pkgname = models.CharField(max_length=255) 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) pkgdesc = models.TextField(null=True) url = models.CharField(max_length=255, null=True) filename = models.CharField(max_length=255) compressed_size = PositiveBigIntegerField() installed_size = PositiveBigIntegerField() build_date = models.DateTimeField(null=True) last_update = models.DateTimeField(db_index=True) files_last_update = models.DateTimeField(null=True, blank=True) packager_str = models.CharField(max_length=255) packager = models.ForeignKey(User, null=True, on_delete=models.SET_NULL) pgp_signature = models.TextField(null=True, blank=True) flag_date = models.DateTimeField(null=True) objects = PackageManager() class Meta: db_table = 'packages' ordering = ('pkgname',) get_latest_by = 'last_update' unique_together = (('pkgname', 'repo', 'arch'),) def __unicode__(self): return self.pkgname @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 get_absolute_url(self): return '/packages/%s/%s/%s/' % (self.repo.name.lower(), self.arch.name, self.pkgname) def get_full_url(self, proto='https'): '''get a URL suitable for things like email including the domain''' domain = Site.objects.get_current().domain return '%s://%s%s' % (proto, domain, self.get_absolute_url()) @property @cache_function(15) def signature(self): try: data = b64decode(self.pgp_signature) except TypeError: return None data = BinaryData(data) packets = list(data.packets()) return packets[0] @property @cache_function(15) def signer(self): sig = self.signature if sig and sig.key_id: try: user = User.objects.get( userprofile__pgp_key__endswith=sig.key_id) except User.DoesNotExist: user = None return user return None _maintainers = None @property def maintainers(self): from packages.models import PackageRelation if self._maintainers is None: self._maintainers = User.objects.filter( package_relations__pkgbase=self.pkgbase, package_relations__type=PackageRelation.MAINTAINER) return self._maintainers @maintainers.setter def maintainers(self, maintainers): self._maintainers = maintainers @cache_function(1800) def applicable_arches(self): '''The list of (this arch) + (available agnostic arches).''' arches = set(Arch.objects.filter(agnostic=True)) arches.add(self.arch) return list(arches) @cache_function(119) def get_requiredby(self): """ Returns a list of package objects. An attempt will be made to keep this list slim by including the corresponding package in the same testing category as this package if that check makes sense. """ from packages.models import Depend provides = set(self.provides.values_list('name', flat=True)) provides.add(self.pkgname) requiredby = Depend.objects.select_related('pkg', 'pkg__arch', 'pkg__repo').filter( name__in=provides).order_by( 'pkg__pkgname', 'pkg__arch__name', 'pkg__repo__name') if not self.arch.agnostic: # make sure we match architectures if possible requiredby = requiredby.filter( pkg__arch__in=self.applicable_arches()) # sort out duplicate packages; this happens if something has a double # versioned dep such as a kernel module requiredby = [list(vals)[0] for _, vals in groupby(requiredby, lambda x: x.pkg.id)] # find another package by this name in the opposite testing setup # TODO: figure out staging exclusions too if not Package.objects.filter(pkgname=self.pkgname, arch=self.arch).exclude(id=self.id).exclude( repo__testing=self.repo.testing).exists(): # there isn't one? short circuit, all required by entries are fine return requiredby trimmed = [] # for each unique package name, try to screen our package list down to # those packages in the same testing category (yes or no) iff there is # a package in the same testing category. for _, dep_pkgs in groupby(requiredby, lambda x: x.pkg.pkgname): dep_pkgs = list(dep_pkgs) dep = dep_pkgs[0] if len(dep_pkgs) > 1: dep_pkgs = [d for d in dep_pkgs if d.pkg.repo.testing == self.repo.testing and d.pkg.repo.staging == self.repo.staging] if len(dep_pkgs) > 0: dep = dep_pkgs[0] trimmed.append(dep) return trimmed @cache_function(121) def get_depends(self): """ Returns a list of dicts. Each dict contains ('dep', 'pkg', and 'providers'). If it represents a found package both vars will be available; else pkg will be None if it is a 'virtual' dependency. If pkg is None and providers are known, they will be available in providers. Packages will match the testing status of this package if possible. """ deps = [] arches = None # TODO: we can use list comprehension and an 'in' query to make this more effective for dep in self.depends.order_by('optional', 'name'): pkg = dep.get_best_satisfier() providers = None if not pkg: providers = dep.get_providers() deps.append({'dep': dep, 'pkg': pkg, 'providers': providers}) return deps @cache_function(125) def base_package(self): """ Locate the base package for this package. It may be this very package, or if it was built in a way that the base package isn't real, will return None. """ try: # start by looking for something in this repo return Package.objects.normal().get(arch=self.arch, repo=self.repo, pkgname=self.pkgbase) except Package.DoesNotExist: # this package might be split across repos? just find one # that matches the correct [testing] repo flag pkglist = Package.objects.normal().filter(arch=self.arch, repo__testing=self.repo.testing, repo__staging=self.repo.staging, pkgname=self.pkgbase) if len(pkglist) > 0: return pkglist[0] return None def split_packages(self): """ Return all packages that were built with this one (e.g. share a pkgbase value). The package this method is called on will never be in the list, and we will never return a package that does not have the same repo.testing and repo.staging flags. For any non-split packages, the return value will be an empty list. """ return Package.objects.normal().filter(arch__in=self.applicable_arches(), repo__testing=self.repo.testing, repo__staging=self.repo.staging, pkgbase=self.pkgbase).exclude(id=self.id) def flag_request(self): if not self.flag_date: return None from packages.models import FlagRequest try: request = FlagRequest.objects.filter(pkgbase=self.pkgbase, repo=self.repo).latest() return request except FlagRequest.DoesNotExist: return None def is_same_version(self, other): 'is this package similar, name and version-wise, to another' return self.pkgname == other.pkgname \ and self.pkgver == other.pkgver \ and self.pkgrel == other.pkgrel \ and self.epoch == other.epoch def in_testing(self): '''attempt to locate this package in a testing repo; if we are in a testing repo we will always return None.''' if self.repo.testing: return None try: return Package.objects.normal().get(repo__testing=True, pkgname=self.pkgname, arch=self.arch) except Package.DoesNotExist: return None def in_staging(self): '''attempt to locate this package in a staging repo; if we are in a staging repo we will always return None.''' if self.repo.staging: return None try: return Package.objects.normal().get(repo__staging=True, pkgname=self.pkgname, arch=self.arch) except Package.DoesNotExist: return None def elsewhere(self): '''attempt to locate this package anywhere else, regardless of architecture or repository. Excludes this package from the list.''' return Package.objects.normal().filter( pkgname=self.pkgname).exclude(id=self.id).order_by( 'arch__name', 'repo__name') class PackageFile(models.Model): pkg = models.ForeignKey(Package) is_directory = models.BooleanField(default=False) directory = models.CharField(max_length=255) filename = models.CharField(max_length=255, null=True, blank=True) def __unicode__(self): return "%s%s" % (self.directory, self.filename or '') class Meta: db_table = 'package_files' class PackageDepend(models.Model): pkg = models.ForeignKey(Package, related_name='depends') depname = models.CharField(max_length=255, db_index=True) depvcmp = models.CharField(max_length=255, default='') optional = models.BooleanField(default=False) description = models.TextField(null=True, blank=True) def get_best_satisfier(self): '''Find a satisfier for this dependency that best matches the given criteria. It will not search provisions, but will find packages named and matching repo characteristics if possible.''' pkgs = Package.objects.normal().filter(pkgname=self.depname) 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 get_providers(self): '''Return providers of this dep. Does *not* include exact matches as it checks the Provision names only, use get_best_satisfier() instead.''' pkgs = Package.objects.normal().filter( provides__name=self.depname).order_by().distinct() if not self.pkg.arch.agnostic: # make sure we match architectures if possible arches = self.pkg.applicable_arches() pkgs = pkgs.filter(arch__in=arches) # Logic here is to filter out packages that are in multiple repos if # they are not requested. For example, if testing is False, only show a # testing package if it doesn't exist in a non-testing repo. filtered = {} for package in pkgs: if package.pkgname not in filtered or \ package.repo.staging == self.pkg.repo.staging: filtered[package.pkgname] = package pkgs = filtered.values() filtered = {} for package in pkgs: if package.pkgname not in filtered or \ package.repo.testing == self.pkg.repo.testing: filtered[package.pkgname] = package pkgs = filtered.values() return pkgs def __unicode__(self): return "%s%s" % (self.depname, self.depvcmp) class Meta: db_table = 'package_depends' class Todolist(models.Model): creator = models.ForeignKey(User, on_delete=models.PROTECT) name = models.CharField(max_length=255) description = models.TextField() date_added = models.DateTimeField(db_index=True) objects = TodolistManager() def __unicode__(self): return self.name _packages = None @property def packages(self): if not self._packages: # select_related() does not use LEFT OUTER JOIN for nullable # ForeignKey fields. That is why we need to explicitly list the # ones we want. self._packages = TodolistPkg.objects.select_related( 'pkg__repo', 'pkg__arch').filter(list=self).order_by('pkg') return self._packages @property def package_names(self): # depends on packages property returning a queryset return self.packages.values_list( 'pkg__pkgname', flat=True).order_by().distinct() class Meta: db_table = 'todolists' def get_absolute_url(self): return '/todo/%i/' % self.id def get_full_url(self, proto='https'): '''get a URL suitable for things like email including the domain''' domain = Site.objects.get_current().domain return '%s://%s%s' % (proto, domain, self.get_absolute_url()) class TodolistPkg(models.Model): list = models.ForeignKey(Todolist) pkg = models.ForeignKey(Package) complete = models.BooleanField(default=False) class Meta: db_table = 'todolist_pkgs' unique_together = (('list','pkg'),) def set_todolist_fields(sender, **kwargs): todolist = kwargs['instance'] if not todolist.date_added: todolist.date_added = utc_now() # connect signals needed to keep cache in line with reality from main.utils import refresh_latest from django.db.models.signals import pre_save, post_save post_save.connect(refresh_latest, sender=Package, dispatch_uid="main.models") pre_save.connect(set_todolist_fields, sender=Todolist, dispatch_uid="main.models") pre_save.connect(set_created_field, sender=Donor, dispatch_uid="main.models") # vim: set ts=4 sw=4 et: