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from datetime import timedelta
from itertools import groupby
import json
from operator import attrgetter, itemgetter
from django.core.serializers.json import DjangoJSONEncoder
from django.db import connection
from django.http import Http404, HttpResponse
from django.shortcuts import get_object_or_404, render
from django.utils.timezone import now
from django.views.decorators.cache import cache_page
from django.views.decorators.http import condition
from django_countries.fields import Country
from ..models import (Mirror, MirrorUrl, MirrorProtocol, MirrorLog,
CheckLocation)
from ..utils import get_mirror_statuses, get_mirror_errors, DEFAULT_CUTOFF
def mirrors(request):
mirror_list = Mirror.objects.select_related().order_by('tier', 'name')
protos = MirrorUrl.objects.values_list(
'mirror_id', 'protocol__protocol').order_by(
'mirror_id', 'protocol__protocol').distinct()
countries = MirrorUrl.objects.values_list(
'mirror_id', 'country').order_by(
'mirror_id', 'country').distinct()
if not request.user.is_authenticated():
mirror_list = mirror_list.filter(public=True, active=True)
protos = protos.filter(
mirror__public=True, mirror__active=True, active=True)
countries = countries.filter(
mirror__public=True, mirror__active=True, active=True)
protos = {k: list(v) for k, v in groupby(protos, key=itemgetter(0))}
countries = {k: list(v) for k, v in groupby(countries, key=itemgetter(0))}
for mirror in mirror_list:
item_protos = protos.get(mirror.id, [])
mirror.protocols = [item[1] for item in item_protos]
mirror.country = None
item_countries = countries.get(mirror.id, [])
if len(item_countries) == 1:
mirror.country = Country(item_countries[0][1])
return render(request, 'mirrors/mirrors.html',
{'mirror_list': mirror_list})
def mirror_details(request, name):
mirror = get_object_or_404(Mirror, name=name)
authorized = request.user.is_authenticated()
if not authorized and \
(not mirror.public or not mirror.active):
raise Http404
error_cutoff = timedelta(days=7)
status_info = get_mirror_statuses(mirror_id=mirror.id,
show_all=authorized)
checked_urls = {url for url in status_info['urls'] \
if url.mirror_id == mirror.id}
all_urls = mirror.urls.select_related('protocol')
if not authorized:
all_urls = all_urls.filter(active=True)
all_urls = set(all_urls)
# Add dummy data for URLs that we haven't checked recently
other_urls = all_urls.difference(checked_urls)
for url in other_urls:
for attr in ('last_sync', 'completion_pct', 'delay', 'duration_avg',
'duration_stddev', 'score'):
setattr(url, attr, None)
all_urls = sorted(checked_urls.union(other_urls), key=attrgetter('url'))
error_logs = get_mirror_errors(mirror_id=mirror.id, cutoff=error_cutoff,
show_all=True)
context = {
'mirror': mirror,
'urls': all_urls,
'cutoff': error_cutoff,
'error_logs': error_logs,
}
return render(request, 'mirrors/mirror_details.html', context)
def mirror_details_json(request, name):
authorized = request.user.is_authenticated()
mirror = get_object_or_404(Mirror, name=name)
if not authorized and (not mirror.public or not mirror.active):
raise Http404
status_info = get_mirror_statuses(mirror_id=mirror.id,
show_all=authorized)
data = status_info.copy()
data['version'] = 3
to_json = json.dumps(data, ensure_ascii=False,
cls=ExtendedMirrorStatusJSONEncoder)
response = HttpResponse(to_json, content_type='application/json')
return response
def url_details(request, name, url_id):
url = get_object_or_404(MirrorUrl.objects.select_related(),
id=url_id, mirror__name=name)
mirror = url.mirror
authorized = request.user.is_authenticated()
if not authorized and \
(not mirror.public or not mirror.active or not url.active):
raise Http404
error_cutoff = timedelta(days=7)
cutoff_time = now() - error_cutoff
logs = MirrorLog.objects.select_related('location').filter(
url=url, check_time__gte=cutoff_time).order_by('-check_time')
context = {
'url': url,
'logs': logs,
}
return render(request, 'mirrors/url_details.html', context)
def status_last_modified(request, *args, **kwargs):
cursor = connection.cursor()
cursor.execute("SELECT MAX(check_time) FROM mirrors_mirrorlog")
return cursor.fetchone()[0]
@condition(last_modified_func=status_last_modified)
def status(request, tier=None):
if tier is not None:
tier = int(tier)
if tier not in [t[0] for t in Mirror.TIER_CHOICES]:
raise Http404
bad_timedelta = timedelta(days=3)
status_info = get_mirror_statuses()
urls = status_info['urls']
good_urls = []
bad_urls = []
for url in urls:
# screen by tier if we were asked to
if tier is not None and url.mirror.tier != tier:
continue
# split them into good and bad lists based on delay
if url.completion_pct is None:
# skip URLs that have never been checked
continue
elif not url.delay or url.delay > bad_timedelta:
bad_urls.append(url)
else:
good_urls.append(url)
error_logs = get_mirror_errors()
if tier is not None:
error_logs = [log for log in error_logs
if log['url'].mirror.tier == tier]
context = status_info.copy()
context.update({
'good_urls': sorted(good_urls, key=attrgetter('score')),
'bad_urls': sorted(bad_urls, key=lambda u: u.delay or timedelta.max),
'error_logs': error_logs,
'tier': tier,
})
return render(request, 'mirrors/status.html', context)
class MirrorStatusJSONEncoder(DjangoJSONEncoder):
'''Base JSONEncoder extended to handle datetime.timedelta and MirrorUrl
serialization. The base class takes care of datetime.datetime types.'''
url_attributes = ('url', 'protocol', 'last_sync', 'completion_pct',
'delay', 'duration_avg', 'duration_stddev', 'score')
def default(self, obj):
if isinstance(obj, timedelta):
# always returned as integer seconds
return obj.days * 24 * 3600 + obj.seconds
if isinstance(obj, MirrorUrl):
data = {attr: getattr(obj, attr) for attr in self.url_attributes}
country = obj.country
data['country'] = unicode(country.name)
data['country_code'] = country.code
return data
if isinstance(obj, MirrorProtocol):
return unicode(obj)
return super(MirrorStatusJSONEncoder, self).default(obj)
class ExtendedMirrorStatusJSONEncoder(MirrorStatusJSONEncoder):
'''Adds URL check history information.'''
log_attributes = ('check_time', 'last_sync', 'duration', 'is_success',
'location_id')
def default(self, obj):
if isinstance(obj, MirrorUrl):
data = super(ExtendedMirrorStatusJSONEncoder, self).default(obj)
cutoff = now() - DEFAULT_CUTOFF
data['logs'] = list(obj.logs.filter(
check_time__gte=cutoff).order_by('check_time'))
return data
if isinstance(obj, MirrorLog):
return {attr: getattr(obj, attr) for attr in self.log_attributes}
return super(ExtendedMirrorStatusJSONEncoder, self).default(obj)
@cache_page(67)
@condition(last_modified_func=status_last_modified)
def status_json(request, tier=None):
if tier is not None:
tier = int(tier)
if tier not in [t[0] for t in Mirror.TIER_CHOICES]:
raise Http404
status_info = get_mirror_statuses()
data = status_info.copy()
if tier is not None:
data['urls'] = [url for url in data['urls'] if url.mirror.tier == tier]
data['version'] = 3
to_json = json.dumps(data, ensure_ascii=False, cls=MirrorStatusJSONEncoder)
response = HttpResponse(to_json, content_type='application/json')
return response
class LocationJSONEncoder(DjangoJSONEncoder):
'''Base JSONEncoder extended to handle CheckLocation objects.'''
def default(self, obj):
if isinstance(obj, CheckLocation):
return {
'id': obj.pk,
'hostname': obj.hostname,
'source_ip': obj.source_ip,
'country': unicode(obj.country.name),
'country_code': obj.country.code,
'ip_version': obj.ip_version,
}
return super(LocationJSONEncoder, self).default(obj)
def locations_json(request):
data = {}
data['version'] = 1
data['locations'] = list(CheckLocation.objects.all().order_by('pk'))
to_json = json.dumps(data, ensure_ascii=False, cls=LocationJSONEncoder)
response = HttpResponse(to_json, content_type='application/json')
return response
# vim: set ts=4 sw=4 et:
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