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import json
from django.db.models import Count, Sum
from django.http import HttpResponse
from django.shortcuts import render
from django.views.decorators.cache import cache_page
from main.models import Package, Arch, Repo
def index(request):
return render(request, 'visualize/index.html')
def arch_repo_data():
qs = Package.objects.select_related().values(
'arch__name', 'repo__name').annotate(
count=Count('pk'), csize=Sum('compressed_size'),
isize=Sum('installed_size'),
flagged=Count('flag_date')).order_by()
arches = Arch.objects.values_list('name', flat=True)
repos = Repo.objects.values_list('name', flat=True)
def build_map(name, arch, repo):
key = '%s:%s' % (repo or '', arch or '')
return {
'key': key,
'name': name,
'arch': arch,
'repo': repo,
'data': [],
}
# now transform these results into two mappings: one ordered (repo, arch),
# and one ordered (arch, repo).
arch_groups = {a: build_map(a, a, None) for a in arches}
repo_groups = {r: build_map(r, None, r) for r in repos}
for row in qs:
arch = row['arch__name']
repo = row['repo__name']
values = {
'arch': arch,
'repo': repo,
'name': '%s (%s)' % (repo, arch),
'key': '%s:%s' % (repo, arch),
'csize': row['csize'],
'isize': row['isize'],
'count': row['count'],
'flagged': row['flagged'],
}
arch_groups[arch]['data'].append(values)
repo_groups[repo]['data'].append(values)
data = {
'by_arch': { 'name': 'Architectures', 'data': arch_groups.values() },
'by_repo': { 'name': 'Repositories', 'data': repo_groups.values() },
}
return data
@cache_page(1800)
def by_arch(request):
data = arch_repo_data()
to_json = json.dumps(data['by_arch'], ensure_ascii=False)
return HttpResponse(to_json, mimetype='application/json')
@cache_page(1800)
def by_repo(request):
data = arch_repo_data()
to_json = json.dumps(data['by_repo'], ensure_ascii=False)
return HttpResponse(to_json, mimetype='application/json')
# vim: set ts=4 sw=4 et:
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