def __init__(self, save_path: str):
if not isinstance(save_path, str):
raise ValueError(
"param 'save_path' must be str, but got {}".format(save_path))
self.version_ = None
self.checkpoint_dir_ = self.DEFAULT_CHECKPOINT_DIR
self.saved_model_dir_ = save_path
self.saved_model_pb_filename_ = "{}.pb".format(
self.DEFAULT_SAVED_MODEL_FILE_BASENAME)
self.saved_model_pbtxt_filename_ = "{}.prototxt".format(
self.DEFAULT_SAVED_MODEL_FILE_BASENAME)
self.saved_model_proto_ = saved_model_pb.SavedModel()
self.graph_builders_ = {}
def load_saved_model(
self,
saved_model_dir,
model_version=ModelVersionPolicy.LATEST,
saved_model_meta_file_basename="saved_model",
graph_name=None,
signature_name=None,
):
if not os.path.isdir(saved_model_dir):
raise ValueError(
"{} is not a valid directory".format(saved_model_dir))
if isinstance(model_version, int):
pass
elif model_version == ModelVersionPolicy.LATEST:
model_version = _find_model_latest_version(saved_model_dir)
else:
raise NotImplementedError
saved_model_path = os.path.join(saved_model_dir, str(model_version))
if not os.path.isdir(saved_model_path):
raise ValueError(
"version {} of saved model in dir {} do not exist".format(
model_version, saved_model_dir))
subfiles = list(os.listdir(saved_model_path))
saved_model_meta_pb_filename = saved_model_meta_file_basename + ".pb"
saved_model_meta_prototxt_filename = (saved_model_meta_file_basename +
".prototxt")
saved_model_proto = saved_model_pb.SavedModel()
if saved_model_meta_pb_filename in subfiles:
saved_model_meta_file_path = os.path.join(
saved_model_path, saved_model_meta_pb_filename)
with open(saved_model_meta_file_path, "rb") as f:
saved_model_proto.ParseFromString(f.read())
elif saved_model_meta_prototxt_filename in subfiles:
saved_model_meta_file_path = os.path.join(
saved_model_path, saved_model_meta_prototxt_filename)
with open(saved_model_meta_file_path, "rt") as f:
text_format.Merge(f.read(), saved_model_proto)
else:
raise ValueError(
"saved model meta file {} do not exist in {}".format(
saved_model_meta_file_basename, saved_model_path))
# set checkpoint
self.set_checkpoint_path(
os.path.join(saved_model_path, saved_model_proto.checkpoint_dir))
# get signature
signature = None
if graph_name is None:
graph_name = saved_model_proto.default_graph_name
else:
if graph_name not in saved_model_proto.graphs:
raise ValueError("graph {} do not exist".format(graph_name))
graph_def = saved_model_proto.graphs[graph_name]
if signature_name is None and graph_def.HasField(
"default_signature_name"):
signature_name = graph_def.default_signature_name
if signature_name is not None:
if signature_name not in graph_def.signatures:
raise ValueError(
"signature {} do not exist".format(signature_name))
else:
signature = graph_def.signatures[signature_name]
# compile job
with self.open(graph_name, signature):
self.compile(graph_def.op_list)
def load_saved_model(model_meta_file_path):
saved_model_proto = saved_model_pb.SavedModel()
with open(model_meta_file_path, "rb") as f:
text_format.Merge(f.read(), saved_model_proto)
return saved_model_proto
