Add Web Page Replay support.

scripts/slave/runtest.py

Index: scripts/slave/runtest.py
===================================================================
--- scripts/slave/runtest.py	(revision 132640)
+++ scripts/slave/runtest.py	(working copy)
@@ -171,6 +171,21 @@
                                              (e, output_dir))
   return http_server
 
+def start_wpr_server(test_exe_path):
+  """Start Web Page Replay server.
+
+  WPR makes it easy to record all the resources for a web page and serve
+  that page with a simulated network.
+  """
+  import google.webpagereplay_utils

[cmp, 2012/04/18 20:37:22]

it seems like sys.path needs to be manipulated so that
'src/third_party/webpagereplay/.../' is correctly in it.  wdyt?

[slamm_google, 2012/04/18 20:42:55]

Line 31 does that manipulation:
   sys.path.insert(0, os.path.abspath('src/tools/python'))

It was already needed for start_http_server() which imports google.httpd_utils
and google.platform_utils.

[cmp_google, 2012/04/18 20:47:15]

Thanks, I didn't see that.

+  test_exe_name = os.path.splitext(os.path.basename(test_exe_path))[0]
+  paths = google.webpagereplay_utils.ChromiumPaths(
+      TEST_EXE_NAME=test_exe_name, TEST_NAME='2012Q2')
+  wpr_server = google.webpagereplay_utils.ReplayLauncher(
+      paths['replay'], paths['.wpr'], paths['logs'], ['--no-dns_forwarding'])
+  wpr_server.StartServer()
+  return wpr_server
+
 def main_mac(options, args):
   if len(args) < 1:
     raise chromium_utils.MissingArgument('Usage: %s' % USAGE)
@@ -233,10 +248,13 @@
 
   try:
     http_server = None
+    webpagereplay_server = None
     if options.document_root:
       http_server = start_http_server('mac', build_dir=build_dir,
                                       test_exe_path=test_exe_path,
                                       document_root=options.document_root)
+      if options.enable_wpr:
+        webpagereplay_server = start_wpr_server(test_exe_path)
     if options.factory_properties.get('asan', False):
       symbolize = os.path.abspath(os.path.join('src', 'third_party', 'asan',
                                                'scripts', 'asan_symbolize.py'))
@@ -247,6 +265,8 @@
   finally:
     if http_server:
       http_server.StopServer()
+    if webpagereplay_server:
+      webpagereplay_server.StopServer()
 
   if options.generate_json_file:
     _GenerateJSONForTestResults(options, results_tracker)
@@ -353,10 +373,13 @@
 
   try:
     http_server = None
+    webpagereplay_server = None
     if options.document_root:
       http_server = start_http_server('linux', build_dir=build_dir,
                                       test_exe_path=test_exe_path,
                                       document_root=options.document_root)
+      if options.enable_wpr:
+        webpagereplay_server = start_wpr_server(test_exe_path)
     if options.xvfb:
       xvfb.StartVirtualX(
           slave_name, bin_dir,
@@ -372,6 +395,8 @@
   finally:
     if http_server:
       http_server.StopServer()
+    if webpagereplay_server:
+      webpagereplay_server.StopServer()
     if options.xvfb:
       xvfb.StopVirtualX(slave_name)
 
@@ -484,6 +509,10 @@
                            default=None, metavar='DOC_ROOT',
                            help='Start a local httpd server using the given '
                                 'document root, relative to the current dir')
+  option_parser.add_option('', '--enable-wpr', action='store_true',
+                           default=False,
+                           help='Start the given Web Page Replay server using '
+                                'the httpd document root as the archive root.')
   option_parser.add_option('', '--total-shards', dest='total_shards',
                            default=None, type="int",
                            help='Number of shards to split this test into.')