src/tools/telemetry/telemetry/core/wpr_server.py

   1 # Copyright 2012 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 from telemetry.core import forwarders
   6 from telemetry.core import webpagereplay
   7
   8
   9 # TODO(tonyg): Move webpagereplay.py's guts into this class and
  10 # make ReplayServer subclass LocalServer.
  11
  12
  13 def GetChromeFlags(replay_host, port_pairs):
  14   return webpagereplay.GetChromeFlags(replay_host, port_pairs.http.remote_port,
  15                                       port_pairs.https.remote_port)
  16
  17
  18 class ReplayServer(object):
  19   def __init__(self, browser_backend, path, is_record_mode, is_append_mode,
  20                make_javascript_deterministic):
  21     self._browser_backend = browser_backend
  22     self._forwarder = None
  23     self._web_page_replay = None
  24     self._is_record_mode = is_record_mode
  25     self._is_append_mode = is_append_mode
  26
  27     wpr_args = browser_backend.browser_options.extra_wpr_args
  28     if self._is_record_mode:
  29       if self._is_append_mode:
  30         wpr_args.append('--append')
  31       else:
  32         wpr_args.append('--record')
  33     if not make_javascript_deterministic:
  34       wpr_args.append('--inject_scripts=')
  35     browser_backend.AddReplayServerOptions(wpr_args)
  36     self._web_page_replay = webpagereplay.ReplayServer(
  37         path, self._browser_backend.forwarder_factory.host_ip,
  38         browser_backend.wpr_port_pairs.dns.local_port if
  39         browser_backend.wpr_port_pairs.dns else 0,
  40         browser_backend.wpr_port_pairs.http.local_port,
  41         browser_backend.wpr_port_pairs.https.local_port,
  42         wpr_args)
  43     # Remove --no-dns_forwarding if it wasn't explicitly requested by backend.
  44     if '--no-dns_forwarding' not in wpr_args:
  45       self._web_page_replay.replay_options.remove('--no-dns_forwarding')
  46     self._web_page_replay.StartServer()
  47
  48     browser_backend.wpr_port_pairs = forwarders.PortPairs(
  49         http=forwarders.PortPair(
  50             self._web_page_replay.http_port,
  51             browser_backend.wpr_port_pairs.http.remote_port or
  52             self._web_page_replay.http_port),
  53         https=forwarders.PortPair(
  54             self._web_page_replay.https_port,
  55             browser_backend.wpr_port_pairs.https.remote_port or
  56             self._web_page_replay.https_port),
  57         dns=forwarders.PortPair(
  58             self._web_page_replay.dns_port,
  59             browser_backend.wpr_port_pairs.dns.remote_port or
  60             self._web_page_replay.dns_port)
  61             if browser_backend.wpr_port_pairs.dns else None)
  62
  63     self._forwarder = browser_backend.forwarder_factory.Create(
  64         browser_backend.wpr_port_pairs)
  65
  66   def __enter__(self):
  67     return self
  68
  69   def __exit__(self, *args):
  70     self.Close()
  71
  72   def Close(self):
  73     if self._forwarder:
  74       self._forwarder.Close()
  75       self._forwarder = None
  76     if self._web_page_replay:
  77       self._web_page_replay.StopServer()
  78       self._web_page_replay = None