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views.py
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views.py
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#!/usr/bin/env python
import datetime
import os
import re
from urllib import unquote
from django.contrib.auth.models import User
from django.conf import settings
from django.db.models import Count
from django.http import HttpResponse
from django.shortcuts import render_to_response
from django.utils.timezone import now
from livesettings import config_value
from tastypie.serializers import Serializer
from panda.api.category import CategoryResource
from panda.models import ActivityLog, Category, Dataset, SearchLog
def index(request):
"""
Page shell for the client-side application.
Bootstraps read-once data onto the page.
"""
serializer = Serializer()
cr = CategoryResource()
categories = list(Category.objects.annotate(dataset_count=Count('datasets')))
bundles = [cr.build_bundle(obj=c) for c in categories]
categories_bootstrap = [cr.full_dehydrate(b) for b in bundles]
uncategorized = Category(
id=settings.PANDA_UNCATEGORIZED_ID,
slug=settings.PANDA_UNCATEGORIZED_SLUG,
name=settings.PANDA_UNCATEGORIZED_NAME)
uncategorized.__dict__['dataset_count'] = Dataset.objects.filter(categories=None).count()
uncategorized_bundle = cr.full_dehydrate(cr.build_bundle(obj=uncategorized))
categories_bootstrap.append(uncategorized_bundle)
return render_to_response('index.html', {
'settings': settings,
'max_upload_size': int(config_value('MISC', 'MAX_UPLOAD_SIZE')),
'demo_mode': int(config_value('MISC', 'DEMO_MODE')),
'bootstrap_data': serializer.to_json({
'categories': categories_bootstrap
})
})
def _get_total_disk_space(p):
"""
Calculate the total disk space of the device on which a given file path resides.
"""
s = os.statvfs(p)
return s.f_frsize * s.f_blocks
def _get_free_disk_space(p):
"""
Returns the number of free bytes on the drive that ``p`` is on
"""
s = os.statvfs(p)
return s.f_frsize * s.f_bavail
def dashboard(request):
"""
Render HTML for dashboard/metrics view.
"""
# Datasets
dataset_count = Dataset.objects.all().count()
datasets_without_descriptions = [(unquote(dataset['name']), dataset['slug']) for dataset in Dataset.objects.filter(description='').values('name', 'slug')]
datasets_without_categories = [(unquote(dataset['name']), dataset['slug']) for dataset in Dataset.objects.filter(categories=None).values('name', 'slug')]
# Users
user_count = User.objects.all().count()
inactive_user_count = User.objects.filter(is_active=False).count()
most_active_users = \
User.objects.all() \
.annotate(Count('activity_logs')) \
.filter(activity_logs__count__gt=0) \
.order_by('-activity_logs__count')[:10]
least_active_users = \
User.objects.all() \
.annotate(Count('activity_logs')) \
.exclude(id__in=[user.id for user in most_active_users]) \
.order_by('activity_logs__count')[:10]
today = now().date()
thirty_days_ago = today - datetime.timedelta(days=30)
_active_users_by_day = \
list(ActivityLog.objects.filter(when__gt=thirty_days_ago) \
.values('when') \
.annotate(Count('id')) \
.order_by('when'))
dates = [thirty_days_ago + datetime.timedelta(days=x) for x in range(0, 31)]
active_users_by_day = []
for d in dates:
if _active_users_by_day and _active_users_by_day[0]['when'] == d:
_d = _active_users_by_day.pop(0)
active_users_by_day.append(_d)
else:
active_users_by_day.append({ 'when': d, 'id__count': 0 })
# Searches
total_searches = SearchLog.objects.count()
most_searched_datasets = [(unquote(dataset['name']), dataset['slug'], dataset['searches__count']) for dataset in \
Dataset.objects.all() \
.annotate(Count('searches')) \
.filter(searches__count__gt=0) \
.order_by('-searches__count') \
.values('name', 'slug', 'searches__count')[:10]]
_searches_by_day = \
list(SearchLog.objects.filter(when__gt=thirty_days_ago) \
.extra(select={ 'day': '"when"::date' }) \
.values('day') \
.annotate(Count('when')) \
.order_by('day'))
dates = [thirty_days_ago + datetime.timedelta(days=x) for x in range(0, 31)]
searches_by_day = []
for d in dates:
if _searches_by_day and _searches_by_day[0]['day'] == d:
_d = _searches_by_day.pop(0)
searches_by_day.append(_d)
else:
searches_by_day.append({ 'day': d, 'when__count': 0 })
# Disk space
root_disk = os.stat('/').st_dev
upload_disk = os.stat(settings.MEDIA_ROOT).st_dev
indices_disk = os.stat(settings.SOLR_DIRECTORY).st_dev
root_disk_total = _get_total_disk_space('/')
root_disk_free = _get_free_disk_space('/')
root_disk_percent_used = 100 - (float(root_disk_free) / root_disk_total * 100)
if upload_disk != root_disk:
upload_disk_total = _get_total_disk_space(settings.MEDIA_ROOT)
upload_disk_free = _get_free_disk_space(settings.MEDIA_ROOT)
upload_disk_percent_used = 100 - (float(upload_disk_free) / upload_disk_total * 100)
else:
upload_disk_total = None
upload_disk_free = None
upload_disk_percent_used = None
if indices_disk != root_disk:
indices_disk_total = _get_total_disk_space(settings.SOLR_DIRECTORY)
indices_disk_free = _get_free_disk_space(settings.SOLR_DIRECTORY)
indices_disk_percent_used = 100 - (float(indices_disk_free) / indices_disk_total * 100)
else:
indices_disk_total = None
indices_disk_free = None
indices_disk_percent_used = None
return render_to_response('dashboard.html', {
'settings': settings,
'dataset_count': dataset_count,
'datasets_without_descriptions': datasets_without_descriptions,
'datasets_without_categories': datasets_without_categories,
'user_count': user_count,
'inactive_user_count': inactive_user_count,
'most_active_users': most_active_users,
'least_active_users': least_active_users,
'active_users_by_day': active_users_by_day,
'total_searches': total_searches,
'most_searched_datasets': most_searched_datasets,
'searches_by_day': searches_by_day,
'root_disk_total': root_disk_total,
'root_disk_free': root_disk_free,
'root_disk_percent_used': root_disk_percent_used,
'upload_disk_total': upload_disk_total,
'upload_disk_free': upload_disk_free,
'upload_disk_percent_used': upload_disk_percent_used,
'indices_disk_total': indices_disk_total,
'indices_disk_free': indices_disk_free,
'indices_disk_percent_used': indices_disk_percent_used
})
def jst(request):
"""
Compile JST templates into a javascript module.
"""
templates_path = os.path.join(settings.SITE_ROOT, 'client/static/templates')
compiled = ''
for dirpath, dirnames, filenames in os.walk(templates_path):
for filename in filenames:
name, extension = os.path.splitext(filename)
if extension != '.jst':
continue
fullpath = os.path.join(dirpath, filename)
with open(fullpath, 'r') as f:
contents = f.read()
# Borrowed from django-pipeline
contents = re.sub(r"\r?\n", "", contents)
contents = re.sub(r"'", "\\'", contents)
compiled += "PANDA.templates['%s'] = _.template('%s');\n" % (
name,
contents
)
return HttpResponse(compiled, mimetype='text/javascript')