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from django import forms
from django.db.models import Avg, Count, Max, Min, StdDev
from django.db.models import Q
from django.views.decorators.csrf import csrf_exempt
from django.views.generic.simple import direct_to_template
from main.utils import make_choice
from .models import Mirror, MirrorUrl, MirrorProtocol
from .models import MirrorLog
import datetime
class MirrorlistForm(forms.Form):
country = forms.MultipleChoiceField(required=False)
protocol = forms.MultipleChoiceField(required=False)
def __init__(self, *args, **kwargs):
super(MirrorlistForm, self).__init__(*args, **kwargs)
mirrors = Mirror.objects.filter(active=True).values_list(
'country', flat=True).distinct().order_by('country')
self.fields['country'].choices = make_choice(mirrors)
self.fields['country'].initial = ['Any']
protos = make_choice(
MirrorProtocol.objects.exclude(protocol__iexact='rsync'))
self.fields['protocol'].choices = protos
self.fields['protocol'].initial = [t[0] for t in protos]
@csrf_exempt
def generate_mirrorlist(request):
if request.REQUEST.get('country', ''):
form = MirrorlistForm(data=request.REQUEST)
if form.is_valid():
countries = form.cleaned_data['country']
protocols = form.cleaned_data['protocol']
return find_mirrors(request, countries, protocols)
else:
form = MirrorlistForm()
return direct_to_template(request, 'mirrors/index.html', {'mirrorlist_form': form})
def find_mirrors(request, countries=None, protocols=None):
if not protocols:
protocols = MirrorProtocol.objects.exclude(
protocol__iexact='rsync').values_list('protocol', flat=True)
qset = MirrorUrl.objects.select_related().filter(
protocol__protocol__in=protocols,
mirror__public=True, mirror__active=True, mirror__isos=True
)
if countries and 'all' not in countries:
qset = qset.filter(mirror__country__in=countries)
qset = qset.order_by('mirror__country', 'mirror__name', 'url')
return direct_to_template(request, 'mirrors/mirrorlist.txt', {
'mirror_urls': qset,
},
mimetype='text/plain')
def status(request):
cutoff_time = datetime.datetime.utcnow() - datetime.timedelta(hours=24)
bad_timedelta = datetime.timedelta(days=3)
protocols = MirrorProtocol.objects.exclude(protocol__iexact='rsync')
# I swear, this actually has decent performance...
urls = MirrorUrl.objects.select_related(
'mirror', 'protocol').filter(
mirror__active=True, mirror__public=True,
protocol__in=protocols).filter(
logs__check_time__gte=cutoff_time).annotate(
check_count=Count('logs'), last_sync=Max('logs__last_sync'),
last_check=Max('logs__check_time'),
duration_avg=Avg('logs__duration'), duration_min=Min('logs__duration'),
duration_max=Max('logs__duration'), duration_stddev=StdDev('logs__duration')
).order_by('-last_sync', '-duration_avg')
# errors during check process go in another table
error_logs = MirrorLog.objects.filter(
is_success=False, check_time__gte=cutoff_time).values(
'url__url', 'url__protocol__protocol', 'url__mirror__country',
'error').annotate(
error_count=Count('error'), last_occurred=Max('check_time')
).order_by('-last_occurred', '-error_count')
last_check = max([u.last_check for u in urls])
good_urls = []
bad_urls = []
for url in urls:
if url.last_check and url.last_sync:
d = url.last_check - url.last_sync
url.delay = d
url.score = d.days * 24 + d.seconds / 3600 + url.duration_avg + url.duration_stddev
else:
url.delay = None
url.score = None
# split them into good and bad lists based on delay
if not url.delay or url.delay > bad_timedelta:
bad_urls.append(url)
else:
good_urls.append(url)
context = {
'last_check': last_check,
'good_urls': good_urls,
'bad_urls': bad_urls,
'error_logs': error_logs,
}
return direct_to_template(request, 'mirrors/status.html', context)
# vim: set ts=4 sw=4 et:
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