Recipe package system.

recipe_engine/run.py

 # Copyright (c) 2013-2015 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.
 
 """Entry point for fully-annotated builds.
 
 This script is part of the effort to move all builds to annotator-based
 systems. Any builder configured to use the AnnotatorFactory.BaseFactory()
 found in scripts/master/factory/annotator_factory.py executes a single
 AddAnnotatedScript step. That step (found in annotator_commands.py) calls
@@ skipping 430 matching lines @@
     'TESTING_MASTERNAME' in os.environ or
     'TESTING_SLAVENAME' in os.environ)):
     properties['use_mirror'] = False
 
   engine = RecipeEngine(stream, properties, test_data)
 
   # Create all API modules and top level RunSteps function.  It doesn't launch
   # any recipe code yet; RunSteps needs to be called.
   api = None
   with stream.step('setup_build') as s:
-    assert 'recipe' in properties # Should be ensured by get_recipe_properties.
+    assert 'recipe' in properties
     recipe = properties['recipe']
 
     properties_to_print = properties.copy()
     if 'use_mirror' in properties:
       del properties_to_print['use_mirror']
 
     run_recipe_help_lines = [
         'To repro this locally, run the following line from a build checkout:',
         '',
         './scripts/tools/run_recipe.py %s --properties-file - <<EOF' % recipe,
@@ skipping 468 matching lines @@
     Args:
       step: ConfigGroup object with information about the step, see
         recipe_modules/step/config.py.
 
     Returns:
       Opaque engine specific object that is understood by 'run_steps' method.
     """
     return step.as_jsonish()