Fork runtest.py and everything it needs src-side for easier hacking

infra/scripts/legacy/scripts/slave/bootstrap.py

Index: infra/scripts/legacy/scripts/slave/bootstrap.py
diff --git a/infra/scripts/legacy/scripts/slave/bootstrap.py b/infra/scripts/legacy/scripts/slave/bootstrap.py
new file mode 100644
index 0000000000000000000000000000000000000000..2bfa4cede28ef8ca648099128f9d4bb6f14509e8
--- /dev/null
+++ b/infra/scripts/legacy/scripts/slave/bootstrap.py
@@ -0,0 +1,47 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Utilities to enable slaves to determine their master without importing any
+buildbot or twisted code.
+"""
+
+import inspect
+import os
+import sys
+
+from common import chromium_utils
+import config_bootstrap
+
+
+def ImportMasterConfigs(master_name=None, include_internal=True):
+  """Imports master configs.
+
+  Normally a slave can use chromium_utils.GetActiveMaster() to find
+  itself and determine which ActiveMaster to use.  In that case, the
+  active master name is passed in as an arg, and we only load the
+  site_config.py that defines it.  When testing, the current "slave"
+  won't be found.  In that case, we don't know which config to use, so
+  load them all.  In either case, masters are assigned as attributes
+  to the config.Master object.
+  """
+  for master in chromium_utils.ListMasters(include_internal=include_internal):
+    path = os.path.join(master, 'master_site_config.py')
+    if os.path.exists(path):
+      local_vars = {}
+      try:
+        execfile(path, local_vars)
+      # pylint: disable=W0703
+      except Exception, e:
+        # Naked exceptions are banned by the style guide but we are
+        # trying to be resilient here.
+        print >> sys.stderr, 'WARNING: cannot exec ' + path
+        print >> sys.stderr, e
+      for (symbol_name, symbol) in local_vars.iteritems():
+        if inspect.isclass(symbol):
+          setattr(symbol, 'local_config_path', master)
+          setattr(config_bootstrap.Master, symbol_name, symbol)
+          # If we have a master_name and it matches, set
+          # config_bootstrap.Master.active_master.
+          if master_name and master_name == symbol_name:
+            setattr(config_bootstrap.Master, 'active_master', symbol)