def SubRespire(build_filepath,
params_file,
out_dir,
function_name,
timestamp_file=None):
with open(params_file, 'r') as f:
params_content = f.read()
registry_files_basename = registry_helpers.GetHashedBaseFilename(
build_filepath, function_name, params_content)
respire_filepaths = registry_helpers.GetSubRespireFilepaths(
out_dir, registry_files_basename)
build_dir = os.path.dirname(build_filepath)
# Make sure that the path has the current respire module's directory in it
# first thing.
sys.path.insert(0, build_dir)
# Change the system current directory to the build file's directory to make
# it so that build files can be more hermetic in assuming the cwd is the
# directory they reside in.
original_cwd = os.getcwd()
os.chdir(build_dir)
# Make sure that all modules have access to the respire standard build
# library.
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'buildlib'))
build_module = respire_python_wrapper_helpers.LoadSourceModule(
'respire_build', build_filepath)
registry = Registry(out_dir, build_filepath, build_module,
respire_filepaths)
params = json_utils.DecodeFromJSONWithFlattening(params_content)
if not hasattr(build_module, function_name):
raise Exception(
'Requested respire function, "%s", not found in build file: %s.' %
(function_name, build_filepath))
function = getattr(build_module, function_name)
if not _IsFunctionParameter('registry', function):
raise Exception(
'You may only pass functions with a "registry" parameter to '
'SubRespire().')
out_params = function(registry=registry, **params)
(out_params_content, out_futures) = json_utils.EncodeToJSON(out_params)
_GenerateSystemCommandForFlattenedOutput(
registry, out_futures, respire_filepaths.output_filepath,
respire_filepaths.flattened_output_filepath)
if timestamp_file:
# Timestamp the timestamp file!
open(timestamp_file, 'w').close()
registry_contents = registry.CompileToString()
respire_python_wrapper_helpers.WriteToFileIfContentsDiffer(
respire_filepaths.registry_filepath, registry_contents)
respire_python_wrapper_helpers.WriteToFileIfContentsDiffer(
respire_filepaths.output_filepath, out_params_content)
deps = (respire_python_wrapper_helpers.
GetCurrentNonBuiltInImportDependencySources() + registry.deps)
deps_file_content = '\n'.join(deps)
respire_python_wrapper_helpers.WriteToFileIfContentsDiffer(
respire_filepaths.deps_filepath, deps_file_content)
os.chdir(original_cwd)
return True
