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app.py
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app.py
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from __future__ import division
from datetime import datetime
import json
import logging
import cgi
import boto
import boto.sqs
from boto.sqs.jsonmessage import JSONMessage
from google.appengine.runtime import DeadlineExceededError
from google.appengine.datastore.datastore_query import Cursor
from google.appengine.ext import ndb
from google.appengine.api import taskqueue
import webapp2
class TriggerInit(webapp2.RequestHandler):
def get(self):
taskqueue.add(url='/init_ranks')
self.response.write("<html><body>OK.</body></html>")
class TriggerRank(webapp2.RequestHandler):
def get(self):
taskqueue.add(url='/rank_users')
self.response.write("<html><body>OK.</body></html>")
class TriggerSend(webapp2.RequestHandler):
def get(self):
taskqueue.add(url='/send_request')
self.response.write("<html><body>OK.</body></html>")
class InitRanks(webapp2.RequestHandler):
def post(self):
best = Ranking()
now = datetime.now()
for user in (LanternUser.query(LanternUser.everSignedIn == True)
.iter(projection=[LanternUser.bytesProxied,
LanternUser.created,
LanternUser.directBytes,
LanternUser.requestsProxied])):
set_user_age(user, now)
for attr in ["age",
"bytesProxied",
"directBytes",
"requestsProxied"]:
user_score = getattr(user, attr, 0)
if user_score > getattr(best, attr):
setattr(best, attr, user_score)
best.put()
self.response.write("<html><body>OK.</body></html>")
def set_user_age(user, now):
user.age = int((now-user.created).total_seconds())
user.age *= user.age
class RankUsers(webapp2.RequestHandler):
def post(self):
best, = Ranking.query().fetch(1)
now = datetime.now()
cursor_str = self.request.get('cursor')
cursor = (Cursor(urlsafe=cursor_str) if cursor_str
else None)
logging.info("cursor_str: %r" % cursor_str)
try:
while True:
users, cursor, more = (
LanternUser.query(LanternUser.everSignedIn == True)
.fetch_page(10,
start_cursor=cursor,
projection=[LanternUser.bytesProxied,
LanternUser.created,
LanternUser.directBytes,
LanternUser.requestsProxied]))
scores = []
for user in users:
set_user_age(user, now)
score = sum(getattr(user, attr) / getattr(best, attr)
for attr in ["age",
"bytesProxied",
"directBytes",
"requestsProxied"])
scores.append(UserScore(id=user.key.id(), score=score))
if scores:
logging.info("Committing a batch of %s" % len(scores))
ndb.put_multi(scores)
if not more:
logging.info("Done!")
break
except DeadlineExceededError:
cursor_str = cursor.urlsafe()
logging.info("Deadline exceeded; rescheduling to %r." % cursor_str)
task_queue.add(url='/rank_users',
params={'cursor': cursor_str})
self.response.write("<html><body>OK.</body></html>")
class SendRequest(webapp2.RequestHandler):
def post(self):
users_future = (UserScore.query(UserScore.ported == False)
.order(-UserScore.score)
.fetch_async(500))
# Include secrets as a submodule if anything grows out of this.
aws_creds = {'aws_access_key_id': '<REDACTED>',
'aws_secret_access_key': '<REDACTED>'}
sqs = boto.sqs.connect_to_region('ap-southeast-1', **aws_creds)
q = sqs.get_queue("notify_lanternctrl1-2")
q.set_message_class(JSONMessage)
msg = JSONMessage()
users = list(users_future.get_result())
msg.set_body({'port-users': '\n'.join(u.key.id() for u in users)})
q.write(msg)
logging.info("Sent request.")
for user in users:
user.ported = True
ndb.put_multi(users)
logging.info("Marked users as ported.")
class LanternUser(ndb.Model):
bytesProxied = ndb.IntegerProperty(default=0)
created = ndb.DateTimeProperty(auto_now_add=True)
directBytes = ndb.IntegerProperty(default=0)
everSignedIn = ndb.BooleanProperty(default=False)
requestsProxied = ndb.IntegerProperty(default=0)
class UserScore(ndb.Model):
score = ndb.FloatProperty(default=0)
ported = ndb.BooleanProperty(default=False)
class Ranking(ndb.Model):
age = ndb.IntegerProperty(default=0)
bytesProxied = ndb.IntegerProperty(default=0)
directBytes = ndb.IntegerProperty(default=0)
requestsProxied = ndb.IntegerProperty(default=0)
app = webapp2.WSGIApplication([('/trigger_init', TriggerInit),
('/trigger_rank', TriggerRank),
('/trigger_send', TriggerSend),
('/init_ranks', InitRanks),
('/rank_users', RankUsers),
('/send_request', SendRequest)],
debug=True)