1 files changed, 76 insertions, 0 deletions
diff --git a/chromium/third_party/skia/tools/buildbot_globals.py b/chromium/third_party/skia/tools/buildbot_globals.py
new file mode 100755
index 00000000000..bb6c38fc841
--- /dev/null
+++ b/chromium/third_party/skia/tools/buildbot_globals.py
@@ -0,0 +1,76 @@
+#!/usr/bin/python
+
+# Copyright (c) 2013 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.
+
+"""
+Provides read access to buildbot's global_variables.json .
+"""
+
+
+import HTMLParser
+import json
+import re
+import retrieve_from_googlesource
+import svn
+import sys
+
+
+_global_vars = None
+
+
+SKIABOT_REPO = 'https://skia.googlesource.com/buildbot'
+_GLOBAL_VARS_PATH = 'site_config/global_variables.json'
+
+
+class GlobalVarsRetrievalError(Exception):
+  """Exception which is raised when the global_variables.json file cannot be
+  retrieved from the Skia buildbot repository."""
+  pass
+
+
+class JsonDecodeError(Exception):
+  """Exception which is raised when the global_variables.json file cannot be
+  interpreted as JSON. This may be due to the file itself being incorrectly
+  formatted or due to an incomplete or corrupted downloaded version of the file.
+  """
+  pass
+
+
+class NoSuchGlobalVariable(KeyError):
+  """Exception which is raised when a given variable is not found in the
+  global_variables.json file."""
+  pass
+
+
+def Get(var_name):
+  """Return the value associated with this name in global_variables.json.
+
+  Args:
+      var_name: string; the variable to look up.
+  Returns:
+      The value of the variable.
+  Raises:
+      NoSuchGlobalVariable if there is no variable with that name.
+  """
+  global _global_vars
+  if not _global_vars:
+    try:
+      global_vars_text = retrieve_from_googlesource.get(SKIABOT_REPO,
+                                                        _GLOBAL_VARS_PATH)
+    except Exception as e:
+      raise GlobalVarsRetrievalError('Failed to retrieve %s from %s:\n%s' %
+                                     (_GLOBAL_VARS_PATH, SKIABOT_REPO, str(e)))
+    try:
+      _global_vars = json.loads(global_vars_text)
+    except ValueError as e:
+      raise JsonDecodeError(e.message + '\n' + global_vars_text)
+  try:
+    return _global_vars[var_name]['value']
+  except KeyError:
+    raise NoSuchGlobalVariable(var_name)
+
+
+if __name__ == '__main__':
+  print Get(sys.argv[1])