def can_purge(user,contentcopy):
from cache import ContentCopy, TYPE_COMPUTER
allCopies = ContentCopy.all().filter("content =",contentcopy.content).fetch(limit = 1000) #now fetch all the copies
allCopies = filter(available_soon_cc,allCopies) #only the ones that are online
if len(allCopies) > LEAVE_COPIES_ON_DARKNET+1:
copies_on_team = 0
chk_team = team_of(contentcopy)
for copy in allCopies:
if copy.key()==contentcopy.key(): continue #not interested in the copy we want to purge
if chk_team.key()==team_of(copy).key(): copies_on_team += 1
if copies_on_team >= LEAVE_COPIES_ON_TEAM:
if not user.team_leader_flag: #wait for the team leader to purge the crap.
team_leader_copies = filter(lambda x: x.where.type==TYPE_COMPUTER, copies_on_team)
from user_sn import all_team_leaders_for
leaders = all_team_leaders_for(user.team)
leaders = map(lambda x: x.key(),leaders)
team_leader_copies = filter(lambda x: x.where.last_touched.key() in leaders)
if len(team_leader_copies) != 0:
logging.info("Team leader has a copy. Not purging.")
return MOVE_TO_SOFTCACHE
else:
return PURGE_AT_WILL
#this is conservative logic. If there's an outstanding request on the sneakernet, leave the file in place
from request import Request
reqs = Request.all().filter("file =",contentcopy.content).get()
if reqs==None:
return MOVE_TO_SOFTCACHE
return LEAVE_IN_PLACE
def get_from_tl(request, allcopies):
logging.info("Searching team leader...")
from user_sn import all_team_leaders_for
leaders = all_team_leaders_for(request.user.team)
leader_copies = []
from cache import TYPE_COMPUTER, is_cache_available_soon, TYPE_LOCAL_FD
for copy in allcopies:
if (
copy.where.last_touched.team.key() == request.user.team.key()
and copy.where.type == TYPE_COMPUTER
and is_cache_available_soon(copy.where)
and copy.where.last_touched.team_leader_flag
):
logging.info("Found copy from team leader!")
dest = request.user.team
if (
RequestCopy.all()
.filter("file =", request.file)
.filter("dest =", dest)
.filter("dest_int =", TYPE_LOCAL_FD)
.get()
== None
):
logging.info("No RequestCopy currently exists; creating...")
rc = RequestCopy(
file=request.file,
req=request,
dest=dest,
dest_int=TYPE_LOCAL_FD,
emailed_user=copy.where.last_touched,
)
rc.put()
send_run_msg(rc.emailed_user)
else:
logging.info("RequestCopy already exists.")
return True
return False
def get_from_any_ext_cache(request, allcopies):
logging.info("Searching all external caches...")
from cache import TYPE_EXTERN_FD, is_cache_available_soon
for copy in allcopies:
if copy.where.type == TYPE_EXTERN_FD and is_cache_available_soon(copy.where):
logging.info(
"Found a copy on team %s's external cache %s"
% (copy.where.permanent_location.team_responsible.name, copy.where.friendlyName)
)
dest = request.user.team
if (
RequestCopy.all()
.filter("file =", request.file)
.filter("dest =", dest)
.filter("dest_int =", TYPE_EXTERN_FD)
.get()
== None
):
logging.info("No RequestCopy currently exists; creating...")
# we need to get ahold of a team leader
from user_sn import all_team_leaders_for
leaders = all_team_leaders_for(request.user.team)
from random import choice
flag_leader = choice(leaders)
rc = RequestCopy(
file=request.file, req=request, dest=dest, dest_int=TYPE_EXTERN_FD, emailed_user=flag_leader
)
rc.put()
send_run_msg(flag_leader)
else:
logging.info("RequestCopy already exists.")
return True
return False
