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import datetime
import json
import time
def _url_dir(request):
return u'/'.join(request.url_parts.path.split(u'/')[:-1]) + u'/'
def store_request_timing_and_headers(request):
"""Store the current timestamp and request's headers in the stash object of
the server. The request must a GET request and must have the "id" parameter.
"""
id = request.GET.first(b"id")
timestamp = datetime.datetime.now().timestamp()
value = {
"timestamp": timestamp,
"headers": request.raw_headers,
}
url_dir = _url_dir(request)
request.server.stash.put(id, value, url_dir)
def get_request_timing_and_headers(request, id=None):
"""Get previously stored timestamp and request headers associated with the
given "id". When "id" is not given the id is retrieved from "request".
"""
if id is None:
id = request.GET.first(b"id")
url_dir = _url_dir(request)
item = request.server.stash.take(id, url_dir)
if not item:
return None
return json.dumps(item)
def wait_for_preload_to_finish(request, id):
"""Wait until a preload associated with "id" is sent."""
while True:
if get_request_timing_and_headers(request, id):
break
time.sleep(0.1)
time.sleep(0.1)