def home(request):
"""Home page."""
demos = (Submission.objects
.all_sorted('upandcoming')
.exclude(hidden=True))[:12]
updates = []
for s in SECTION_USAGE:
updates += Bundle.objects.recent_entries(s.updates)[:5]
community_stats = memcache.get('community_stats')
if not community_stats:
community_stats = {'contributors': 5453, 'locales': 36}
devderby_tag = str(constance.config
.DEMOS_DEVDERBY_CURRENT_CHALLENGE_TAG).strip()
context = {
'demos': demos,
'updates': updates,
'stats': community_stats,
'current_challenge_tag_name': devderby_tag,
}
return render(request, 'landing/homepage.html', context)
def clean_sessions():
"""
Queue deleting expired session items without breaking poor MySQL
"""
now = timezone.now()
logger = clean_sessions.get_logger()
chunk_size = constance.config.SESSION_CLEANUP_CHUNK_SIZE
if memcache.add(LOCK_ID, now.strftime('%c'), LOCK_EXPIRE):
total_count = get_expired_sessions(now).count()
delete_count = 0
logger.info('Deleting the %s of %s oldest expired sessions' %
(chunk_size, total_count))
try:
cursor = connection.cursor()
delete_count = cursor.execute("""
DELETE
FROM django_session
WHERE expire_date < NOW()
ORDER BY expire_date ASC
LIMIT %s;
""", [chunk_size])
transaction.commit_unless_managed()
finally:
logger.info('Deleted %s expired sessions' % delete_count)
memcache.delete(LOCK_ID)
expired_sessions = get_expired_sessions(now)
if expired_sessions.exists():
clean_sessions.apply_async()
else:
logger.error('The clean_sessions task is already running since %s' %
memcache.get(LOCK_ID))
def submission_listing_cache_key(*args, **kw):
ns_key = memcache.get(DEMOS_CACHE_NS_KEY)
if ns_key is None:
ns_key = random.randint(1, 10000)
memcache.set(DEMOS_CACHE_NS_KEY, ns_key)
full_path = args[0].get_full_path()
username = args[0].user.username
return "demos_%s:%s" % (ns_key, hashlib.md5(full_path + username).hexdigest())
def submission_listing_cache_key(*args, **kw):
ns_key = memcache.get(DEMOS_CACHE_NS_KEY)
if ns_key is None:
ns_key = random.randint(1, 10000)
memcache.set(DEMOS_CACHE_NS_KEY, ns_key)
full_path = args[0].get_full_path()
username = args[0].user.username
return 'demos_%s:%s' % (ns_key,
hashlib.md5(full_path + username).hexdigest())
def _invalidate_submission_listing_helper_cache():
"""Invalidate the cache for submission_listing helper used in templates"""
# TODO: Does this belong in helpers.py? Better done with a model save event
# subscription?
ns_key = memcache.get(DEMOS_CACHE_NS_KEY)
if ns_key is None:
ns_key = random.randint(1, 10000)
memcache.set(DEMOS_CACHE_NS_KEY, ns_key)
else:
memcache.incr(DEMOS_CACHE_NS_KEY)
def _invalidate_submission_listing_helper_cache():
"""Invalidate the cache for submission_listing helper used in templates"""
# TODO: Does this belong in helpers.py? Better done with a model save event
# subscription?
ns_key = memcache.get(DEMOS_CACHE_NS_KEY)
if ns_key is None:
ns_key = random.randint(1, 10000)
memcache.set(DEMOS_CACHE_NS_KEY, ns_key)
else:
memcache.incr(DEMOS_CACHE_NS_KEY)
def wrapper(*args, **kw):
if type(key_fn) is str:
cache_key = key_fn
else:
cache_key = key_fn(*args, **kw)
out = memcache.get(cache_key)
if out is None:
context = f(*args, **kw)
t = get_template(template).render(context)
out = jinja2.Markup(t)
memcache.set(cache_key, out, expires)
return out
def bitly_shorten(url):
"""Attempt to shorten a given URL through bit.ly / mzl.la"""
cache_key = "bitly:%s" % hashlib.md5(smart_str(url)).hexdigest()
short_url = memcache.get(cache_key)
if short_url is None:
try:
short_url = bitly.shorten(url)["url"]
memcache.set(cache_key, short_url, 60 * 60 * 24 * 30 * 12)
except (bitly_api.BitlyError, KeyError):
# Just in case the bit.ly service fails or the API key isn't
# configured, fall back to using the original URL.
return url
return short_url
def wrapper(*args, **kw):
if type(key_fn) is str:
cache_key = key_fn
else:
cache_key = key_fn(*args, **kw)
out = memcache.get(cache_key)
if out is None:
context = f(*args, **kw)
t = jingo.env.get_template(template).render(context)
out = jinja2.Markup(t)
memcache.set(cache_key, out, expires)
return out
def bitly_shorten(url):
"""Attempt to shorten a given URL through bit.ly / mzl.la"""
cache_key = 'bitly:%s' % hashlib.md5(smart_str(url)).hexdigest()
short_url = memcache.get(cache_key)
if short_url is None:
try:
short_url = bitly.shorten(url)['url']
memcache.set(cache_key, short_url, 60 * 60 * 24 * 30 * 12)
except (bitly_api.BitlyError, KeyError):
# Just in case the bit.ly service fails or the API key isn't
# configured, fall back to using the original URL.
return url
return short_url
def get_url_remaps(self, locale):
cache_key = URL_REMAPS_CACHE_KEY_TMPL % locale
remaps = memcache.get(cache_key)
if not remaps:
qs = (self.filter(document__locale=locale,
url_root__isnull=False).exclude(url_root=''))
remaps = [{
'original_path': '/docs/%s' % zone.document.slug,
'new_path': '/%s' % zone.url_root
} for zone in qs]
memcache.set(cache_key, remaps)
return remaps
def home(request):
"""Home page."""
updates = list(Bundle.objects.recent_entries(SECTION_HACKS.updates)[:5])
community_stats = memcache.get('community_stats')
if not community_stats:
community_stats = {'contributors': 5453, 'locales': 36}
default_filters = Filter.objects.default_filters()
context = {
'updates': updates,
'stats': community_stats,
'default_filters': default_filters,
}
return render(request, 'landing/homepage.html', context)
def home(request):
"""Home page."""
demos = Submission.objects.all_sorted(sort="recentfeatured", max=12)
updates = []
for s in SECTION_USAGE:
updates += Bundle.objects.recent_entries(s.updates)[:5]
community_stats = memcache.get("community_stats")
if not community_stats:
community_stats = {"contributors": 5453, "locales": 36}
devderby_tag = str(config.DEMOS_DEVDERBY_CURRENT_CHALLENGE_TAG).strip()
context = {"demos": demos, "updates": updates, "stats": community_stats, "current_challenge_tag_name": devderby_tag}
return render(request, "landing/homepage.html", context)
def home(request):
"""Home page."""
updates = []
for s in SECTION_USAGE:
updates += Bundle.objects.recent_entries(s.updates)[:5]
community_stats = memcache.get('community_stats')
if not community_stats:
community_stats = {'contributors': 5453, 'locales': 36}
default_filters = Filter.objects.default_filters()
context = {
'updates': updates,
'stats': community_stats,
'default_filters': default_filters,
}
return render(request, 'landing/homepage.html', context)
def home(request):
"""Home page."""
updates = []
for s in SECTION_USAGE:
updates += Bundle.objects.recent_entries(s.updates)[:5]
community_stats = memcache.get('community_stats')
if not community_stats:
community_stats = {'contributors': 5453, 'locales': 36}
groups = FilterGroup.objects.all()
serializer = GroupWithFiltersSerializer(groups, many=True)
context = {
'updates': updates,
'stats': community_stats,
'command_search_filters': serializer.data
}
return render(request, 'landing/homepage.html', context)
def document_last_modified(request, document_slug, document_locale):
"""
Utility function to derive the last modified timestamp of a document.
Mainly for the @condition decorator.
"""
# build an adhoc natural cache key to not have to do DB query
adhoc_natural_key = (document_locale, document_slug)
natural_key_hash = Document.natural_key_hash(adhoc_natural_key)
cache_key = DOCUMENT_LAST_MODIFIED_CACHE_KEY_TMPL % natural_key_hash
try:
last_mod = memcache.get(cache_key)
if last_mod is None:
doc = Document.objects.get(locale=document_locale,
slug=document_slug)
last_mod = doc.fill_last_modified_cache()
# Convert the cached Unix epoch seconds back to Python datetime
return datetime.fromtimestamp(float(last_mod))
except Document.DoesNotExist:
return None
def document_last_modified(request, document_slug, document_locale):
"""
Utility function to derive the last modified timestamp of a document.
Mainly for the @condition decorator.
"""
# build an adhoc natural cache key to not have to do DB query
adhoc_natural_key = (document_locale, document_slug)
natural_key_hash = Document.natural_key_hash(adhoc_natural_key)
cache_key = DOCUMENT_LAST_MODIFIED_CACHE_KEY_TMPL % natural_key_hash
try:
last_mod = memcache.get(cache_key)
if last_mod is None:
doc = Document.objects.get(locale=document_locale,
slug=document_slug)
last_mod = doc.fill_last_modified_cache()
# Convert the cached Unix epoch seconds back to Python datetime
return datetime.fromtimestamp(float(last_mod))
except Document.DoesNotExist:
return None
def home(request):
"""Home page."""
demos = Submission.objects.all_sorted(sort='recentfeatured', max=12)
updates = []
for s in SECTION_USAGE:
updates += Bundle.objects.recent_entries(s.updates)[:5]
community_stats = memcache.get('community_stats')
if not community_stats:
community_stats = {'contributors': 5453, 'locales': 36}
devderby_tag = str(config.DEMOS_DEVDERBY_CURRENT_CHALLENGE_TAG).strip()
context = {
'demos': demos,
'updates': updates,
'stats': community_stats,
'current_challenge_tag_name': devderby_tag,
}
return render(request, 'landing/homepage.html', context)
def get_url_remaps(self, locale):
cache_key = self.model.cache_key(locale)
remaps = memcache.get(cache_key)
if not remaps:
remaps = self.reset_url_remaps(locale, cache_key)
return remaps
