www/webapp/handlers_iuse.py

   1 #!/usr/bin/python
   2
   3 import tornado.web
   4
   5 from handlers_base import *
   6 import backend
   7
   8 class IUseImage(BaseHandler):
   9         @property
  10         def iuse(self):
  11                 return backend.IUse()
  12
  13         @property
  14         def stasy(self):
  15                 return backend.Stasy()
  16
  17         def get(self, profile_id, image_id):
  18                 # Try to get the image from memcache. If we have a cache miss we
  19                 # build a new one.
  20                 mem_id = "iuse-%s-%s" % (profile_id, image_id)
  21                 image = self.memcached.get(mem_id)
  22
  23                 if not image:
  24                         image_cls = self.iuse.get_imagetype(image_id)
  25                         if not image_cls:
  26                                 raise tornado.web.HTTPError(404, "Image class is unknown: %s" % image_id)
  27
  28                         profile = self.stasy.get_profile(profile_id)
  29                         if not profile:
  30                                 raise tornado.web.HTTPError(404, "Profile '%s' was not found." % profile_id)
  31
  32                         # Render the image
  33                         image = image_cls(profile).to_string()
  34
  35                         # Save the image to the memcache for 15 minutes
  36                         self.memcached.set(mem_id, image, 15*60)
  37
  38                 self.set_header("Content-Type", "image/png")
  39                 self.write(image)
  40