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from operator import attrgetter
from main.models import Arch, Package
from main.utils import cache_function, groupby_preserve_order, PackageStandin
class RecentUpdate(object):
def __init__(self, packages):
if len(packages) == 0:
raise Exception
first = packages[0]
self.pkgbase = first.pkgbase
self.repo = first.repo
self.version = ''
self.classes = set()
self.classes.add(self.repo.name.lower())
if self.repo.testing:
self.classes.add('testing')
if self.repo.staging:
self.classes.add('staging')
packages = sorted(packages, key=attrgetter('arch', 'pkgname'))
# split the packages into two lists. we need to prefer packages
# matching pkgbase as our primary, and group everything else in other.
self.packages = [pkg for pkg in packages if pkg.pkgname == pkg.pkgbase]
self.others = [pkg for pkg in packages if pkg.pkgname != pkg.pkgbase]
if self.packages:
version = self.packages[0].full_version
if all(version == pkg.full_version for pkg in self.packages):
self.version = version
elif self.others:
version = self.others[0].full_version
if all(version == pkg.full_version for pkg in self.others):
self.version = version
def package_links(self):
'''Returns either actual packages or package-standins for virtual
pkgbase packages.'''
if self.packages:
# we have real packages- just yield each in sequence
for package in self.packages:
yield package
else:
# fake out the template- this is slightly hacky but yields one
# 'package-like' object per arch which is what the normal loop does
arches = set()
for package in self.others:
if package.arch not in arches and not arches.add(package.arch):
yield PackageStandin(package)
@cache_function(62)
def get_recent_updates(number=15):
# This is a bit of magic. We are going to show 15 on the front page, but we
# want to try and eliminate cross-architecture wasted space. Pull enough
# packages that we can later do some screening and trim out the fat.
pkgs = []
# grab a few extra so we can hopefully catch everything we need
fetch = number * 6
for arch in Arch.objects.all():
pkgs += list(Package.objects.normal().filter(
arch=arch).order_by('-last_update')[:fetch])
pkgs.sort(key=attrgetter('last_update'), reverse=True)
same_pkgbase_key = lambda x: (x.repo.name, x.pkgbase)
grouped = groupby_preserve_order(pkgs, same_pkgbase_key)
updates = []
for group in grouped:
update = RecentUpdate(group)
updates.append(update)
return updates[:number]
# vim: set ts=4 sw=4 et:
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