def arxiv_threads(tids,r):
"""
Put threads with ids [tids] to archive
Tags and comments of the thread are also stored
"""
deleted_comments = []
deleted_threads = []
try:
headers = db.get_thread_headers(tids)
for h in headers:
if (int(time()) - int(h['time']))>DENGO_TIME_LIMIT:
creator = LcUser.objects.get(pk = h['cid'])
try:
Thread.objects.get(id=h['id'])
except Thread.DoesNotExist:
#
# Save the thread
#
t = Thread(id=h['id'],
creator=creator,
title=h['title'],
summary=h['summary'],
suggested_title=h['suggested_title'],
url = h['url'],
domain = h['domain'],
time_created = h['time'])
t.save()
#
# Save tags
#
for redistag in h['tags']:
tagid = redistag[0]
tagname = redistag[1]
tag = Tag.objects.filter(name = tagname)
if len(tag) == 0:
tag = Tag(id = tagid, name = tagname)
tag.threads.add(t)
tag.save()
else:
tag = tag[0]
if len(tag.threads.filter(id = t.id)) == 0:
tag.threads.add(t)
tag.save()
#
# Save comments
#
cids = db.get_thread_comments(h['id'])
comments = db.get_comments(cids)
for comment in comments:
if comment['pid'] != -1:
try:
parent = Comment.objects.get(pk = comment['pid'])
except:
connection._rollback()
parent = None
else:
parent = None
c = Comment(id = comment['cid'],
creator=creator,
thread = t,
parent = parent,
text=comment['text'],
time_created = comment['time'],
up = comment['up'],
down = comment['down'])
c.save()
#
# Remove thread data from redis
# Later: Put into a function
#
# Remove thread header
r.delete('t:'+str(h['id']))
# Remove thread from active thread id list
r.lrem('act:ids',h['id'])
# Remove thread ids from t:tags:<tid>
tagids = r.lrange('t:tags:'+str(h['id']),0,-1)
r.delete('t:tags:'+str(h['id']))
for tagid in tagids:
r.zrem('tag:t:'+str(tagid),h['id'])
# Remove comments associated with tid
cids = r.lrange('t:comm:'+str(h['id']),0,-1)
deleted_comments = deleted_comments + cids
r.delete('t:comm:'+str(h['id']))
for cid in cids:
r.delete('c:'+str(cid))
r.delete('c:up:'+str(cid))
r.delete('c:down:'+str(cid))
# Remove follower data
foll_uids = r.smembers('t:foll:'+str(h['id']))
for uid in foll_uids:
r.srem('u:foll:'+str(uid),str(h['id']))
r.delete('t:foll:'+str(h['id']))
deleted_threads = deleted_threads + [h['id']]
else:
#
# Remove thread data from redis
# Later: Put into a function
#
# Remove thread header
r.delete('t:'+str(h['id']))
# Remove thread from active thread id list
r.lrem('act:ids',h['id'])
# Remove thread ids from t:tags:<tid>
tagids = r.lrange('t:tags:'+str(h['id']),0,-1)
r.delete('t:tags:'+str(h['id']))
for tagid in tagids:
r.zrem('tag:t:'+str(tagid),h['id'])
# Remove comments associated with tid
cids = r.lrange('t:comm:'+str(h['id']),0,-1)
deleted_comments = deleted_comments + cids
r.delete('t:comm:'+str(h['id']))
for cid in cids:
r.delete('c:'+str(cid))
r.delete('c:up:'+str(cid))
r.delete('c:down:'+str(cid))
# Remove follower data
foll_uids = r.smembers('t:foll:'+str(h['id']))
for uid in foll_uids:
r.srem('u:foll:'+str(uid),str(h['id']))
r.delete('t:foll:'+str(h['id']))
deleted_threads = deleted_threads + [h['id']]
else:
print "Thread is new"
# Delete the sorted act:id list since if act:id has been updated
if not deleted_threads:
r.delete('act:ids:sorted')
# Update user keys - remove archived comments from u:up u:down u:comm
for comment_id in deleted_comments:
u_up_keys = r.keys('u:up:*')
for key in u_up_keys:
r.srem(key,str(comment_id))
u_down_keys = r.keys('u:down:*')
for key in u_down_keys:
r.srem(key,str(comment_id))
u_comm_keys = r.keys('u:comm:*')
for key in u_comm_keys:
r.lrem(key,comment_id)
# Update user keys - remove archived threads from u:notif
u_notif_keys = r.keys('u:notif:*')
for key in u_notif_keys:
for i,notif in enumerate(r.zrange(key,0,-1)):
notif_data = msgpack.unpackb(notif)
if notif_data['tid'] in deleted_threads:
# NOTE: works only for redis 2.0+
r.zremrangebyrank(key,i,i)
# Remove empty tag keys
tag_threads = r.keys('tag:t:*')
for t in tag_threads:
if len(r.zrange(t,0,-1))==0:
tagid = int(t.split(':')[2])
tagname = r.get('tag:'+str(tagid))
r.delete('tag:'+str(tagid))
r.delete('tag:'+str(tagname))
return (True,deleted_threads) # threads are in archive
except:
connection._rollback()
return (False,str(traceback.format_exc()))