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tools.py
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tools.py
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from google.appengine.api import memcache
from google.appengine.api import urlfetch
import logging
import alarm
import yaml
from model import Deliver, FreebieItem
def enqueue_delivery(giver, rcpt, objname, redirecturl):
#check memcache for giver's queue
token = "deliveries_%s" % giver
deliveries = memcache.get(token)
if deliveries is None:
#if not, create new key and save
memcache.set(token, [[objname, rcpt]])
return True
else:
if len(deliveries) > 200:
logging.error('Queue for %s hosting %s is too long, data not stored' % (giver, objname))
alarm.SendAlarm('Vendor', giver, True, 'Vendor queue for %s hosting %s is too long, data not stored. Please make sure to check the object and the database usage!' % (giver, objname), redirecturl)
return False
else:
if len(deliveries) > 50:
logging.warning('Queue for %s hosting %s is getting long (%d entries)' % (giver, objname, len(deliveries)))
logging.info('queue for %s is %s' % (giver, deliveries))
deliveries.append([objname, rcpt])#yes I really mean append. this is a list of lists
memcache.set(token, deliveries)
return True
def remove_item_url(name, deliver):
item = FreebieItem.gql("WHERE freebie_name = :1", name).get()
if item is None:
#could not find item to look up its deliverer. return an error
logging.info("Removing %s deliver from %s but item is not found." % (deliver, name)) #return None
else:
logging.info("Removing %s deliver from %s" % (deliver, name))
item.givers.remove(deliver)
item.put()
token = 'item_%s' % name
token2 = 'paid_item_%s' % name
data = yaml.safe_dump({
"name":name,
"version":item.freebie_version,
"giver":item.freebie_giver,
"givers":item.givers,
"designer_key":item.designer_key,
"designer_cut":item.designer_cut,
"baseprice":item.baseprice
})
if item.baseprice == 0:
memcache.set(token, data)
memcache.set(token2, data)
def httpin_delivery(self, rcpt, objname, recordid):
name = objname
item = get_item(name, True)
if item is None:
#could not find item to look up its deliverer. return an error
logging.error('Error, Paid item %s not found yet was found before. Requested by %s using %s.' % (name, self.request.headers['X-SecondLife-Owner-Name'], self.request.headers['X-SecondLife-Object-Name']))
self.error(403)
return
name_version = "%s - %s" % (name, item['version'])
if item['givers'] == []:
logging.error('Error, Paid item %s does not have http urls.' % (name))
self.error(403)
return
givers = item['givers']
#need to add a way to rotate the urls
url_token = 'url_%s' % name
url = ''
url_num = 0
for _i in range(3):
#will move the code here to compact it instead of the else and ifs
url_num = memcache.incr(url_token, initial_value=0)
url_num = url_num % ((len(givers)))
url_cached = True
count_token = 'item_count_%s' % name
memcache.incr(count_token, initial_value=0)
deliv_url_token = 'deliv_url_%s' % givers[url_num]
cacheddist = memcache.get(deliv_url_token)
if cacheddist is None:
deliv = Deliver.get_by_key_name("Deliv:%s" % givers[url_num])
if deliv is None:
#could not find item deliverer.
remove_item_url(name, givers[url_num])
continue
else:
url_cached = False
url = deliv.url
memcache.set(deliv_url_token, deliv.url)
else:
url = cacheddist
logging.debug("Tring to send %s to %s using deliver %s" % (name, rcpt, givers[url_num]))
result = urlfetch.fetch(url, method="POST", payload="%s|%s" % (name_version, rcpt) , headers={}, deadline = 10)
if result.content == "sent":
#record = Purchases(purchaser = rcpt, item = name, seller = self.request.headers['X-SecondLife-Owner-Key'], item_reciver = 'request', loc = '%s %s' % (self.request.headers['X-SecondLife-Region'], self.request.headers['X-SecondLife-Local-Position']), vender_name = self.request.headers['X-SecondLife-Object-Name'], amount_paid = paid)
#have the vendor transfer the money
return 'sent|%s|%s|%s' % (rcpt, name_version, recordid)#do we need all of this?
elif result.status_code == 410:
#the item is not in that box remove the box from that item
remove_item_url(name, givers[url_num])
elif result.status_code == 404:
if url_cached:
deliv = Deliver.get_by_key_name("Deliv:%s" % givers[url_num])
if deliv is None:
#check for no results.
remove_item_url(name, givers[url_num])
elif url != deliv.url:
#try again as the url was out of date
url_cached = False
memcache.set(deliv_url_token, deliv.url)
url = deliv.url
else:
remove_item_url(name, givers[url_num])
else:
remove_item_url(name, givers[url_num])
else:
logging.error('Error, item %s did not get sent by %s may try again. Status %s Message from vendor: %s' % (name_version, givers[url_num], result.status_code, result.content))
else:
logging.error('Error, Paid item %s did not get sent. Status %s Message from vendor: %s' % (name_version, result.status_code, result.content))
self.error(403)
def get_item(name, paid):
if (paid):
token = 'paid_item_%s' % name
else:
token = 'item_%s' % name
cacheditem = memcache.get(token)
if cacheditem is None:
if (paid):
itemlookup = FreebieItem.gql("WHERE freebie_name = :1", name).get()
else:
itemlookup = FreebieItem.gql("WHERE freebie_name = :1 and cost = 0", name).get()
if itemlookup is None:
#could not find item to look up its deliverer. return an error
return None
else:
item = {
"name":name,
"version":itemlookup.freebie_version,
"giver":itemlookup.freebie_giver,
"givers":itemlookup.givers,
"designer_key":itemlookup.designer_key,
"designer_cut":itemlookup.designer_cut,
"baseprice":itemlookup.baseprice
}
memcache.set(token, yaml.safe_dump(item))
else:
#pull the item's details out of the yaml'd dict
item = yaml.safe_load(cacheditem)
return item