chrome/test/ispy/server/image_handler.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 """Request handler to display an image from Google Cloud Storage."""
   6
   7 import json
   8 import os
   9 import sys
  10 import webapp2
  11
  12 from common import cloud_bucket
  13 from common import constants
  14
  15 import gs_bucket
  16
  17
  18 class ImageHandler(webapp2.RequestHandler):
  19   """A request handler to avoid the Same-Origin problem in the debug view."""
  20
  21   def get(self):
  22     """Handles get requests to the ImageHandler.
  23
  24     GET Parameters:
  25       file_path: A path to an image resource in Google Cloud Storage.
  26     """
  27     file_path = self.request.get('file_path')
  28     if not file_path:
  29       self.error(404)
  30       return
  31     bucket = gs_bucket.GoogleCloudStorageBucket(constants.BUCKET)
  32     try:
  33       image = bucket.DownloadFile(file_path)
  34     except cloud_bucket.FileNotFoundError:
  35       self.error(404)
  36     else:
  37       self.response.headers['Content-Type'] = 'image/png'
  38       self.response.out.write(image)