Add Validation for BuildFactory Configuration

master/skia_master_scripts/factory.py

 # 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.
 
 
 """Utility class to build the Skia master BuildFactory's.
 
 Based on gclient_factory.py and adds Skia-specific steps."""
 
 
 from buildbot.process.properties import WithProperties
 from config_private import AUTOGEN_SVN_BASEURL, SKIA_SVN_BASEURL
 from master.factory import gclient_factory
 from master.factory.build_factory import BuildFactory
 from skia_master_scripts import commands as skia_commands
 import config
 import config_private
 import ntpath
+import os
 import posixpath
+import utils
 
 
 # TODO(epoger): My intent is to make the build steps identical on all platforms
 # and thus remove the need for the whole target_platform parameter.
 # For now, these must match the target_platform values used in
 # third_party/chromium_buildbot/scripts/master/factory/gclient_factory.py ,
 # because we pass these values into GClientFactory.__init__() .
 TARGET_PLATFORM_LINUX = 'linux'
 TARGET_PLATFORM_MAC = 'mac'
 TARGET_PLATFORM_WIN32 = 'win32'
@@ skipping 76 matching lines @@
 
     # Set _default_clobber based on config.Master
     self._default_clobber = getattr(config.Master, 'default_clobber', False)
 
     self._do_upload_results = do_upload_results
     self._do_upload_bench_results = do_upload_results and \
         perf_output_basedir != None
     self._do_patch_step = do_patch_step
 
     if not environment_variables:
-      my_env_vars = {}
+      self._env_vars = {}
     else:
-      my_env_vars = dict(environment_variables)
-    gyp_defines = my_env_vars.get('GYP_DEFINES', '')
-    my_env_vars['GYP_DEFINES'] = gyp_defines + \
+      self._env_vars = dict(environment_variables)
+    gyp_defines = self._env_vars.get('GYP_DEFINES', '')
+    self._env_vars['GYP_DEFINES'] = gyp_defines + \
         ' skia_warnings_as_errors=%d' % int(compile_warnings_as_errors)
 
     # Get an implementation of SkiaCommands as appropriate for
     # this target_platform.
     workdir = self.TargetPathJoin('build', build_subdir)
     self._skia_cmd_obj = skia_commands.SkiaCommands(
         target_platform=target_platform, factory=self,
         configuration=configuration, workdir=workdir,
         target_arch=None, default_timeout=default_timeout,
-        environment_variables=my_env_vars)
+        environment_variables=self._env_vars)
 
     self._perf_output_basedir = perf_output_basedir
 
     self._configuration = configuration
     if self._configuration not in CONFIGURATIONS:
       raise ValueError('Invalid configuration %s.  Must be one of: %s' % (
           self._configuration, CONFIGURATIONS))
 
     self._skia_svn_username_file = '.skia_svn_username'
     self._skia_svn_password_file = '.skia_svn_password'
@@ skipping 36 matching lines @@
         '--make_flags', '"%s"' % ' '.join(self._make_flags),
         '--test_args', '"%s"' % ' '.join(test_args),
         '--gm_args', '"%s"' % ' '.join(gm_args),
         '--bench_args', '"%s"' % ' '.join(bench_args),
         '--num_cores', WithProperties('%(num_cores:-None)s'),
         '--is_try', str(self._do_patch_step),
         '--bench_pictures_cfg', bench_pictures_cfg,
         ]
     BuildFactory.__init__(self, build_factory_properties=properties)
 
+  def Validate(self):
+    """ Validate the Factory against the known good configuration. """
+    test_dir = os.path.join(os.path.dirname(__file__), os.pardir, os.pardir,
+                            'tools', 'tests', 'factory_configuration')
+    expected_dir = os.path.join(test_dir, 'expected')
+    actual_dir = os.path.join(test_dir, 'actual')
+    if not os.path.exists(actual_dir):
+      os.makedirs(actual_dir)
+    try:
+      expectation = open(os.path.join(expected_dir, self._builder_name)).read()
+    except IOError:
+      raise Exception('Warning: No expected factory configuration for %s.' %
+          self._builder_name)
+    self_as_string = utils.ToString(self.__dict__)
+    with open(os.path.join(actual_dir, self._builder_name), 'w') as f:
+      f.write(self_as_string)
+    if self_as_string != expectation:
+      raise ValueError('Factory configuration for %s does not match '
+                       'expectation!' % self._builder_name)
+
   def AddSlaveScript(self, script, description, args=None, timeout=None,
                      halt_on_failure=False, is_upload_step=False,
                      is_rebaseline_step=False, get_props_from_stdout=None,
                      workdir=None):
     """ Add a BuildStep consisting of a python script.
 
     script: which slave-side python script to run.
     description: string briefly describing the BuildStep.
     args: optional list of strings; arguments to pass to the script.
     timeout: optional integer; maximum time for the BuildStep to complete.
@@ skipping 293 matching lines @@
       self.UploadBenchGraphs()
 
   def Build(self, clobber=None):
     """Build and return the complete BuildFactory.
 
     clobber: boolean indicating whether we should clean before building
     """
     self.CommonSteps(clobber)
     self.NonPerfSteps()
     self.PerfSteps()
+    self.Validate()
     return self
 
   def BuildCompileOnly(self, clobber=None):
     """Build and return the complete BuildFactory, with only the compile step.
     Does not build in one step; the assumption is that if we're only performing
     the compile, we want as much information as possible about *which* compile
     steps are passing and failing.
 
     clobber: boolean indicating whether we should clean before building
     """
     self.UpdateSteps()
     self.Compile(clobber=clobber, build_in_one_step=False)
+    self.Validate()
     return self
 
   def BuildNoPerf(self, clobber=None):
     """Build and return the complete BuildFactory, without the benchmarking
     steps.
 
     clobber: boolean indicating whether we should clean before building
     """
     self.CommonSteps(clobber)
     self.NonPerfSteps()
+    self.Validate()
     return self
 
   def BuildPerfOnly(self, clobber=None):
     """Build and return the complete BuildFactory, with only the benchmarking
     steps.
 
     clobber: boolean indicating whether we should clean before building
     """
     if not self._perf_output_basedir:
       raise ValueError(
           'BuildPerfOnly requires perf_output_basedir to be defined.')
     if self._configuration != CONFIG_RELEASE:
       raise ValueError('BuildPerfOnly should run in %s configuration.' %
                        CONFIG_RELEASE)
     self.CommonSteps(clobber)
     self.PerfSteps()
+    self.Validate()
     return self