76c37ce3ac
Now that Django actually provides a concise way to use a RequestContext object without instantiating it, we can use that rather than the old function-based generic view that worked well to do the same. Additionally, these function-based generic views will be gone in Django 1.5, so might as well make the move now. Signed-off-by: Dan McGee <dan@archlinux.org>
257 lines
9.6 KiB
Python
257 lines
9.6 KiB
Python
from datetime import timedelta
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from itertools import groupby
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import json
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from operator import attrgetter, itemgetter
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from django import forms
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from django.forms.widgets import CheckboxSelectMultiple
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from django.core.serializers.json import DjangoJSONEncoder
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from django.db.models import Q
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from django.http import Http404, HttpResponse
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from django.shortcuts import get_object_or_404, render
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from django.views.decorators.csrf import csrf_exempt
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from django_countries.countries import COUNTRIES
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from .models import Mirror, MirrorUrl, MirrorProtocol, TIER_CHOICES
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from .utils import get_mirror_statuses, get_mirror_errors
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COUNTRY_LOOKUP = dict(COUNTRIES)
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class MirrorlistForm(forms.Form):
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country = forms.MultipleChoiceField(required=False)
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protocol = forms.MultipleChoiceField(required=False,
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widget=CheckboxSelectMultiple)
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ip_version = forms.MultipleChoiceField(required=False,
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label="IP version", choices=(('4','IPv4'), ('6','IPv6')),
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widget=CheckboxSelectMultiple)
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use_mirror_status = forms.BooleanField(required=False)
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def __init__(self, *args, **kwargs):
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super(MirrorlistForm, self).__init__(*args, **kwargs)
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fields = self.fields
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fields['country'].choices = [('all','All')] + self.get_countries()
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fields['country'].initial = ['all']
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protos = [(p.protocol, p.protocol) for p in
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MirrorProtocol.objects.filter(is_download=True)]
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initial = MirrorProtocol.objects.filter(is_download=True, default=True)
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fields['protocol'].choices = protos
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fields['protocol'].initial = [p.protocol for p in initial]
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fields['ip_version'].initial = ['4']
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def get_countries(self):
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country_codes = set()
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country_codes.update(Mirror.objects.filter(active=True).exclude(
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country='').values_list(
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'country', flat=True).order_by().distinct())
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country_codes.update(MirrorUrl.objects.filter(
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mirror__active=True).exclude(country='').values_list(
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'country', flat=True).order_by().distinct())
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countries = [(code, COUNTRY_LOOKUP[code]) for code in country_codes]
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return sorted(countries, key=itemgetter(1))
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def as_div(self):
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"Returns this form rendered as HTML <divs>s."
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return self._html_output(
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normal_row = u'<div%(html_class_attr)s>%(label)s %(field)s%(help_text)s</div>',
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error_row = u'%s',
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row_ender = '</div>',
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help_text_html = u' <span class="helptext">%s</span>',
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errors_on_separate_row = True)
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@csrf_exempt
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def generate_mirrorlist(request):
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if request.method == 'POST' or len(request.GET) > 0:
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form = MirrorlistForm(data=request.REQUEST)
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if form.is_valid():
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countries = form.cleaned_data['country']
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protocols = form.cleaned_data['protocol']
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use_status = form.cleaned_data['use_mirror_status']
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ipv4 = '4' in form.cleaned_data['ip_version']
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ipv6 = '6' in form.cleaned_data['ip_version']
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return find_mirrors(request, countries, protocols,
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use_status, ipv4, ipv6)
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else:
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form = MirrorlistForm()
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return render(request, 'mirrors/mirrorlist_generate.html',
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{'mirrorlist_form': form})
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def default_protocol_filter(original_urls):
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key_func = attrgetter('real_country')
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sorted_urls = sorted(original_urls, key=key_func)
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urls = []
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for _, group in groupby(sorted_urls, key=key_func):
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cntry_urls = list(group)
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if any(url.protocol.default for url in cntry_urls):
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cntry_urls = [url for url in cntry_urls if url.protocol.default]
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urls.extend(cntry_urls)
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return urls
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def status_filter(original_urls):
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status_info = get_mirror_statuses()
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scores = dict((u.id, u.score) for u in status_info['urls'])
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urls = []
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for u in original_urls:
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u.score = scores.get(u.id, None)
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# also include mirrors that don't have an up to date score
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# (as opposed to those that have been set with no score)
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if (u.id not in scores) or (u.score and u.score < 100.0):
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urls.append(u)
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# if a url doesn't have a score, treat it as the highest possible
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return sorted(urls, key=lambda x: x.score or 100.0)
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def find_mirrors(request, countries=None, protocols=None, use_status=False,
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ipv4_supported=True, ipv6_supported=True, smart_protocol=False):
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if not protocols:
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protocols = MirrorProtocol.objects.filter(is_download=True)
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elif hasattr(protocols, 'model') and protocols.model == MirrorProtocol:
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# we already have a queryset, no need to query again
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pass
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else:
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protocols = MirrorProtocol.objects.filter(protocol__in=protocols)
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qset = MirrorUrl.objects.select_related().filter(
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protocol__in=protocols,
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mirror__public=True, mirror__active=True)
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if countries and 'all' not in countries:
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qset = qset.filter(Q(country__in=countries) |
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Q(mirror__country__in=countries))
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ip_version = Q()
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if ipv4_supported:
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ip_version |= Q(has_ipv4=True)
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if ipv6_supported:
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ip_version |= Q(has_ipv6=True)
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qset = qset.filter(ip_version)
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if smart_protocol:
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urls = default_protocol_filter(qset)
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else:
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urls = qset
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if not use_status:
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sort_key = attrgetter('real_country', 'mirror.name', 'url')
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urls = sorted(urls, key=sort_key)
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template = 'mirrors/mirrorlist.txt'
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else:
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urls = status_filter(urls)
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template = 'mirrors/mirrorlist_status.txt'
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context = {
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'mirror_urls': urls,
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}
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return render(request, template, context, content_type='text/plain')
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def find_mirrors_simple(request, protocol):
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if protocol == 'smart':
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# generate a 'smart' mirrorlist, one that only includes FTP mirrors if
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# no HTTP mirror is available in that country.
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return find_mirrors(request, smart_protocol=True)
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proto = get_object_or_404(MirrorProtocol, protocol=protocol)
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return find_mirrors(request, protocols=[proto])
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def mirrors(request):
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mirror_list = Mirror.objects.select_related().order_by('tier', 'country')
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if not request.user.is_authenticated():
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mirror_list = mirror_list.filter(public=True, active=True)
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return render(request, 'mirrors/mirrors.html',
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{'mirror_list': mirror_list})
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def mirror_details(request, name):
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mirror = get_object_or_404(Mirror, name=name)
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if not request.user.is_authenticated() and \
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(not mirror.public or not mirror.active):
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raise Http404
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status_info = get_mirror_statuses()
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checked_urls = [url for url in status_info['urls'] \
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if url.mirror_id == mirror.id]
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all_urls = mirror.urls.select_related('protocol')
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# get each item from checked_urls and supplement with anything in all_urls
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# if it wasn't there
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all_urls = set(checked_urls).union(all_urls)
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all_urls = sorted(all_urls, key=attrgetter('url'))
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return render(request, 'mirrors/mirror_details.html',
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{'mirror': mirror, 'urls': all_urls})
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def status(request, tier=None):
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if tier is not None:
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tier = int(tier)
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if tier not in [t[0] for t in TIER_CHOICES]:
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raise Http404
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bad_timedelta = timedelta(days=3)
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status_info = get_mirror_statuses()
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urls = status_info['urls']
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good_urls = []
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bad_urls = []
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for url in urls:
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# screen by tier if we were asked to
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if tier is not None and url.mirror.tier != tier:
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continue
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# split them into good and bad lists based on delay
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if not url.delay or url.delay > bad_timedelta:
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bad_urls.append(url)
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else:
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good_urls.append(url)
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error_logs = get_mirror_errors()
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if tier is not None:
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error_logs = [log for log in error_logs
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if log['url__mirror__tier'] == tier]
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context = status_info.copy()
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context.update({
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'good_urls': sorted(good_urls, key=attrgetter('score')),
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'bad_urls': sorted(bad_urls, key=lambda u: u.delay or timedelta.max),
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'error_logs': error_logs,
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'tier': tier,
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})
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return render(request, 'mirrors/status.html', context)
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class MirrorStatusJSONEncoder(DjangoJSONEncoder):
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'''Base JSONEncoder extended to handle datetime.timedelta and MirrorUrl
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serialization. The base class takes care of datetime.datetime types.'''
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url_attributes = ['url', 'protocol', 'last_sync', 'completion_pct',
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'delay', 'duration_avg', 'duration_stddev', 'score']
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def default(self, obj):
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if isinstance(obj, timedelta):
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# always returned as integer seconds
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return obj.days * 24 * 3600 + obj.seconds
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if hasattr(obj, '__iter__'):
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# mainly for queryset serialization
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return list(obj)
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if isinstance(obj, MirrorUrl):
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data = dict((attr, getattr(obj, attr))
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for attr in self.url_attributes)
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# get any override on the country attribute first
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country = obj.real_country
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data['country'] = unicode(country.name)
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data['country_code'] = country.code
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return data
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if isinstance(obj, MirrorProtocol):
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return unicode(obj)
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return super(MirrorStatusJSONEncoder, self).default(obj)
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def status_json(request):
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status_info = get_mirror_statuses()
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data = status_info.copy()
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data['version'] = 3
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to_json = json.dumps(data, ensure_ascii=False, cls=MirrorStatusJSONEncoder)
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response = HttpResponse(to_json, mimetype='application/json')
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return response
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# vim: set ts=4 sw=4 et:
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