Work around unicode issues by re-encoding properties as utf-8

recipe_engine/util.py

 # Copyright 2013 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 import contextlib
 import datetime
 import functools
 import logging
 import os
 import sys
@@ skipping 291 matching lines @@
     it (iterable): An iterable to traverse.
     exc_types (list): An optional list of specific exception types to defer.
         If empty, Exception will be used. Any Exceptions not referenced by this
         list will skip deferring and be immediately raised.
   """
   mexc_builder = MultiException.Builder()
   for e in it:
     with mexc_builder.catch(*exc_types):
       fn(e)
   mexc_builder.raise_if_any()
+
+def strip_unicode(obj):
+  """Recursively re-encodes strings as utf-8 inside |obj|. Returns the result.
+  """
+  if isinstance(obj, unicode):
+    return obj.encode('utf-8', 'replace')
+
+  if isinstance(obj, list):
+    return map(strip_unicode, obj)
+
+  if isinstance(obj, dict):
+    new_obj = type(obj)(
+        (strip_unicode(k), strip_unicode(v)) for k, v in obj.iteritems() )
+    return new_obj
+
+  return obj