update_shell.py - mozsearch

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# This serves a different response to each request, to test service worker

# updates. If |filename| is provided, it writes that file into the body.

# Usage:

#   navigator.serviceWorker.register('update_shell.py?filename=worker.js')

# This registers worker.js as a service worker, and every update check

# will return a new response.

import os

import random

import time

from wptserve.utils import isomorphic_encode

def main(request, response):

  # Set no-cache to ensure the user agent finds a new version for each update.

  headers = [(b'Cache-Control', b'no-cache, must-revalidate'),

             (b'Pragma', b'no-cache'),

             (b'Content-Type', b'application/javascript')]

  # Return a different script for each access.

  timestamp = u'// %s %s' % (time.time(), random.random())

  body = isomorphic_encode(timestamp) + b'\n'

  # Inject the file into the response.

  if b'filename' in request.GET:

    path = os.path.join(os.path.dirname(isomorphic_encode(__file__)),

                        request.GET[b'filename'])

    with open(path, 'rb') as f:

      body += f.read()

  return headers, body