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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
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