def _fill_meta_graph_def(meta_graph_def, obj, signature_functions,
object_saver):
"""Generates a MetaGraph which calls `signature_functions`.
Args:
meta_graph_def: The MetaGraphDef proto to fill.
obj: The checkpointable object being exported.
signature_functions: A dictionary mapping signature keys to concrete
functions containing signatures to add to the MetaGraph.
object_saver: A CheckpointableSaver to add to the MetaGraph.
Returns:
An _AssetInfo, which contains information to help creating the SavedModel.
"""
signatures = {}
# List objects from the eager context to make sure Optimizers give us the
# right Graph-dependent variables.
accessible_objects = util.list_objects(obj)
resource_initializer_functions = _trace_resource_initializers(
accessible_objects)
exported_graph = ops.Graph()
resource_initializer_ops = []
with exported_graph.as_default():
object_map, resource_map, asset_info = _map_resources(
accessible_objects)
for resource_initializer_function in resource_initializer_functions:
asset_dependencies = []
for capture in resource_initializer_function.graph.external_captures:
asset_initializer = asset_info.asset_initializers_by_resource.get(
capture, None)
if asset_initializer is not None:
asset_dependencies.append(asset_initializer)
with ops.control_dependencies(asset_dependencies):
resource_initializer_ops.append(
_call_function_with_mapped_captures(
resource_initializer_function, [], resource_map))
with ops.control_dependencies(resource_initializer_ops):
init_op = control_flow_ops.no_op()
# Add the same op to the main_op collection and to the init_op
# signature. The collection is for compatibility with older loader APIs;
# only one will be executed.
meta_graph_def.collection_def[
constants.MAIN_OP_KEY].node_list.value.append(init_op.name)
meta_graph_def.signature_def[constants.INIT_OP_SIGNATURE_KEY].CopyFrom(
signature_def_utils.op_signature_def(
init_op, constants.INIT_OP_SIGNATURE_KEY))
# Saving an object-based checkpoint again gathers variables. We need to do the
# gathering from the eager context so Optimizers save the right set of
# variables, but want any operations associated with the save/restore to be in
# the exported graph (thus the `to_graph` argument).
saver = object_saver.freeze(object_map=object_map, to_graph=exported_graph)
# We must resolve the concrete function to add to MetaGraph while in eager
# mode.
concrete_functions = []
for accessible_object in accessible_objects:
for function in function_serialization.list_all_polymorphic_functions(
accessible_object).values():
concrete_functions.extend(
function_serialization.list_all_concrete_functions(function))
with exported_graph.as_default():
signatures = _generate_signatures(signature_functions, resource_map)
for concrete_function in concrete_functions:
concrete_function.add_to_graph()
saver_def = saver.to_proto()
meta_graph_def.saver_def.CopyFrom(saver_def)
graph_def = exported_graph.as_graph_def(add_shapes=True)
# Clean reference cycles so repeated export()s don't make work for the garbage
# collector.
ops.dismantle_graph(exported_graph)
meta_graph_def.graph_def.CopyFrom(graph_def)
meta_graph_def.meta_info_def.tags.append(tag_constants.SERVING)
meta_graph_def.asset_file_def.extend(asset_info.asset_defs)
for signature_key, signature in signatures.items():
meta_graph_def.signature_def[signature_key].CopyFrom(signature)
meta_graph.strip_graph_default_valued_attrs(meta_graph_def)
return asset_info
def _add_op_to_signature_def_map(signature_def_map, op, key):
if op is not None:
signature_def_map[key] = signature_def_utils.op_signature_def(op, key)
def _fill_meta_graph_def(meta_graph_def, saveable_view, signature_functions,
namespace_whitelist):
"""Generates a MetaGraph which calls `signature_functions`.
Args:
meta_graph_def: The MetaGraphDef proto to fill.
saveable_view: The _SaveableView being exported.
signature_functions: A dictionary mapping signature keys to concrete
functions containing signatures to add to the MetaGraph.
namespace_whitelist: List of strings containing whitelisted op namespaces.
Returns:
A tuple of (_AssetInfo, Graph) containing the captured assets and
exported Graph generated from tracing the saveable_view.
"""
# List objects from the eager context to make sure Optimizers give us the
# right Graph-dependent variables.
accessible_objects = saveable_view.nodes
resource_initializer_functions = _trace_resource_initializers(
accessible_objects)
exported_graph = ops.Graph()
resource_initializer_ops = []
with exported_graph.as_default():
object_map, resource_map, asset_info = saveable_view.map_resources()
for resource_initializer_function in resource_initializer_functions:
asset_dependencies = []
for capture in resource_initializer_function.graph.external_captures:
asset_initializer = asset_info.asset_initializers_by_resource.get(
capture, None)
if asset_initializer is not None:
asset_dependencies.append(asset_initializer)
with ops.control_dependencies(asset_dependencies):
resource_initializer_ops.append(
_call_function_with_mapped_captures(
resource_initializer_function, [], resource_map))
resource_initializer_ops.extend(
asset_info.asset_initializers_by_resource.values())
with ops.control_dependencies(resource_initializer_ops):
init_op = control_flow_ops.no_op()
# Add the same op to the main_op collection and to the init_op
# signature. The collection is for compatibility with older loader APIs;
# only one will be executed.
meta_graph_def.collection_def[constants.MAIN_OP_KEY].node_list.value.append(
init_op.name)
meta_graph_def.signature_def[constants.INIT_OP_SIGNATURE_KEY].CopyFrom(
signature_def_utils.op_signature_def(
init_op, constants.INIT_OP_SIGNATURE_KEY))
# Saving an object-based checkpoint again gathers variables. We need to do the
# gathering from the eager context so Optimizers save the right set of
# variables, but want any operations associated with the save/restore to be in
# the exported graph (thus the `to_graph` argument).
saver = functional_saver.MultiDeviceSaver(
saveable_view.checkpoint_view.frozen_saveable_objects(
object_map=object_map, to_graph=exported_graph))
with exported_graph.as_default():
signatures = _generate_signatures(signature_functions, resource_map)
for concrete_function in saveable_view.concrete_functions:
concrete_function.add_to_graph()
saver_def = saver.to_proto()
meta_graph_def.saver_def.CopyFrom(saver_def)
graph_def = exported_graph.as_graph_def(add_shapes=True)
_verify_ops(graph_def, namespace_whitelist)
meta_graph_def.graph_def.CopyFrom(graph_def)
meta_graph_def.meta_info_def.tags.append(tag_constants.SERVING)
meta_graph_def.meta_info_def.tensorflow_version = versions.__version__
meta_graph_def.meta_info_def.tensorflow_git_version = (
versions.__git_version__)
# We currently always strip default attributes.
meta_graph_def.meta_info_def.stripped_default_attrs = True
meta_graph_def.meta_info_def.stripped_op_list.MergeFrom(
meta_graph.stripped_op_list_for_graph(meta_graph_def.graph_def))
meta_graph_def.asset_file_def.extend(asset_info.asset_defs)
for signature_key, signature in signatures.items():
meta_graph_def.signature_def[signature_key].CopyFrom(signature)
meta_graph.strip_graph_default_valued_attrs(meta_graph_def)
return asset_info, exported_graph
def _fill_meta_graph_def(meta_graph_def, saveable_view, signature_functions,
object_saver):
"""Generates a MetaGraph which calls `signature_functions`.
Args:
meta_graph_def: The MetaGraphDef proto to fill.
saveable_view: The _SaveableView being exported.
signature_functions: A dictionary mapping signature keys to concrete
functions containing signatures to add to the MetaGraph.
object_saver: A CheckpointableSaver to add to the MetaGraph.
Returns:
An _AssetInfo, which contains information to help creating the SavedModel.
"""
# List objects from the eager context to make sure Optimizers give us the
# right Graph-dependent variables.
accessible_objects = saveable_view.nodes
resource_initializer_functions = _trace_resource_initializers(
accessible_objects)
exported_graph = ops.Graph()
resource_initializer_ops = []
with exported_graph.as_default():
object_map, resource_map, asset_info = _map_resources(accessible_objects)
for resource_initializer_function in resource_initializer_functions:
asset_dependencies = []
for capture in resource_initializer_function.graph.external_captures:
asset_initializer = asset_info.asset_initializers_by_resource.get(
capture, None)
if asset_initializer is not None:
asset_dependencies.append(asset_initializer)
with ops.control_dependencies(asset_dependencies):
resource_initializer_ops.append(
_call_function_with_mapped_captures(
resource_initializer_function, [], resource_map))
with ops.control_dependencies(resource_initializer_ops):
init_op = control_flow_ops.no_op()
# Add the same op to the main_op collection and to the init_op
# signature. The collection is for compatibility with older loader APIs;
# only one will be executed.
meta_graph_def.collection_def[constants.MAIN_OP_KEY].node_list.value.append(
init_op.name)
meta_graph_def.signature_def[constants.INIT_OP_SIGNATURE_KEY].CopyFrom(
signature_def_utils.op_signature_def(
init_op, constants.INIT_OP_SIGNATURE_KEY))
# Saving an object-based checkpoint again gathers variables. We need to do the
# gathering from the eager context so Optimizers save the right set of
# variables, but want any operations associated with the save/restore to be in
# the exported graph (thus the `to_graph` argument).
saver = object_saver.freeze(object_map=object_map, to_graph=exported_graph)
# We must instantiate and list all concrete functions of `Function`s while in
# eager mode so they end up added to the graph and can later be used by the
# object based saved model.
concrete_functions = []
for obj in accessible_objects:
for function in saveable_view.functions[obj].values():
if isinstance(function, defun.ConcreteFunction):
concrete_functions.append(function)
else:
concrete_functions.extend(
function._list_all_concrete_functions_for_serialization()) # pylint: disable=protected-access
with exported_graph.as_default():
signatures = _generate_signatures(signature_functions, resource_map)
for concrete_function in concrete_functions:
concrete_function.add_to_graph()
saver_def = saver.to_proto()
meta_graph_def.saver_def.CopyFrom(saver_def)
graph_def = exported_graph.as_graph_def(add_shapes=True)
# Clean reference cycles so repeated export()s don't make work for the garbage
# collector.
ops.dismantle_graph(exported_graph)
meta_graph_def.graph_def.CopyFrom(graph_def)
meta_graph_def.meta_info_def.tags.append(tag_constants.SERVING)
meta_graph_def.asset_file_def.extend(asset_info.asset_defs)
for signature_key, signature in signatures.items():
meta_graph_def.signature_def[signature_key].CopyFrom(signature)
meta_graph.strip_graph_default_valued_attrs(meta_graph_def)
return asset_info
def _fill_meta_graph_def(meta_graph_def, saveable_view, signature_functions):
"""Generates a MetaGraph which calls `signature_functions`.
Args:
meta_graph_def: The MetaGraphDef proto to fill.
saveable_view: The _SaveableView being exported.
signature_functions: A dictionary mapping signature keys to concrete
functions containing signatures to add to the MetaGraph.
Returns:
An _AssetInfo, which contains information to help creating the SavedModel.
"""
# List objects from the eager context to make sure Optimizers give us the
# right Graph-dependent variables.
accessible_objects = saveable_view.nodes
resource_initializer_functions = _trace_resource_initializers(
accessible_objects)
exported_graph = ops.Graph()
resource_initializer_ops = []
with exported_graph.as_default():
object_map, resource_map, asset_info = saveable_view.map_resources()
for resource_initializer_function in resource_initializer_functions:
asset_dependencies = []
for capture in resource_initializer_function.graph.external_captures:
asset_initializer = asset_info.asset_initializers_by_resource.get(
capture, None)
if asset_initializer is not None:
asset_dependencies.append(asset_initializer)
with ops.control_dependencies(asset_dependencies):
resource_initializer_ops.append(
_call_function_with_mapped_captures(
resource_initializer_function, [], resource_map))
resource_initializer_ops.extend(
asset_info.asset_initializers_by_resource.values())
with ops.control_dependencies(resource_initializer_ops):
init_op = control_flow_ops.no_op()
# Add the same op to the main_op collection and to the init_op
# signature. The collection is for compatibility with older loader APIs;
# only one will be executed.
meta_graph_def.collection_def[constants.MAIN_OP_KEY].node_list.value.append(
init_op.name)
meta_graph_def.signature_def[constants.INIT_OP_SIGNATURE_KEY].CopyFrom(
signature_def_utils.op_signature_def(
init_op, constants.INIT_OP_SIGNATURE_KEY))
# Saving an object-based checkpoint again gathers variables. We need to do the
# gathering from the eager context so Optimizers save the right set of
# variables, but want any operations associated with the save/restore to be in
# the exported graph (thus the `to_graph` argument).
saver = functional_saver.MultiDeviceSaver(
saveable_view.checkpoint_view.frozen_saveable_objects(
object_map=object_map, to_graph=exported_graph))
with exported_graph.as_default():
signatures = _generate_signatures(signature_functions, resource_map)
for concrete_function in saveable_view.concrete_functions:
concrete_function.add_to_graph()
saver_def = saver.to_proto()
meta_graph_def.saver_def.CopyFrom(saver_def)
graph_def = exported_graph.as_graph_def(add_shapes=True)
meta_graph_def.graph_def.CopyFrom(graph_def)
meta_graph_def.meta_info_def.tags.append(tag_constants.SERVING)
meta_graph_def.meta_info_def.tensorflow_version = versions.__version__
meta_graph_def.meta_info_def.tensorflow_git_version = (
versions.__git_version__)
# We currently always strip default attributes.
meta_graph_def.meta_info_def.stripped_default_attrs = True
meta_graph_def.meta_info_def.stripped_op_list.MergeFrom(
meta_graph.stripped_op_list_for_graph(meta_graph_def.graph_def))
meta_graph_def.asset_file_def.extend(asset_info.asset_defs)
for signature_key, signature in signatures.items():
meta_graph_def.signature_def[signature_key].CopyFrom(signature)
meta_graph.strip_graph_default_valued_attrs(meta_graph_def)
return asset_info, exported_graph
def _add_op_to_signature_def_map(signature_def_map, op, key):
if op is not None:
signature_def_map[key] = signature_def_utils.op_signature_def(op, key)
def _fill_meta_graph_def(meta_graph_def, obj, signature_functions,
object_saver):
"""Generates a MetaGraph which calls `signature_functions`.
Args:
meta_graph_def: The MetaGraphDef proto to fill.
obj: The checkpointable object being exported.
signature_functions: A dictionary mapping signature keys to concrete
functions containing signatures to add to the MetaGraph.
object_saver: A CheckpointableSaver to add to the MetaGraph.
Returns:
asset_filename_map, a dictionary mapping from asset base names to
user-specified full asset paths, which should be copied to the SavedModel's
assets/ directory.
"""
signatures = {}
# List objects from the eager context to make sure Optimizers give us the
# right Graph-dependent variables.
accessible_objects = util.list_objects(obj)
resource_initializer_functions = _trace_resource_initializers(
accessible_objects)
exported_graph = ops.Graph()
resource_initializer_ops = []
with exported_graph.as_default():
object_map, resource_map, asset_info = _map_resources(accessible_objects)
for resource_initializer_function in resource_initializer_functions:
asset_dependencies = []
for capture in resource_initializer_function.graph.external_captures:
asset_initializer = asset_info.asset_initializers_by_resource.get(
capture, None)
if asset_initializer is not None:
asset_dependencies.append(asset_initializer)
with ops.control_dependencies(asset_dependencies):
resource_initializer_ops.append(
_call_function_with_mapped_captures(
resource_initializer_function, [], resource_map))
with ops.control_dependencies(resource_initializer_ops):
init_op = control_flow_ops.no_op()
# Add the same op to the main_op collection and to the init_op
# signature. The collection is for compatibility with older loader APIs;
# only one will be executed.
meta_graph_def.collection_def[constants.MAIN_OP_KEY].node_list.value.append(
init_op.name)
meta_graph_def.signature_def[constants.INIT_OP_SIGNATURE_KEY].CopyFrom(
signature_def_utils.op_signature_def(
init_op, constants.INIT_OP_SIGNATURE_KEY))
# Saving an object-based checkpoint again gathers variables. We need to do the
# gathering from the eager context so Optimizers save the right set of
# variables, but want any operations associated with the save/restore to be in
# the exported graph (thus the `to_graph` argument).
saver = object_saver.freeze(object_map=object_map, to_graph=exported_graph)
with exported_graph.as_default():
signatures = _generate_signatures(signature_functions, resource_map)
saver_def = saver.to_proto()
meta_graph_def.saver_def.CopyFrom(saver_def)
graph_def = exported_graph.as_graph_def(add_shapes=True)
# Clean reference cycles so repeated export()s don't make work for the garbage
# collector.
ops.dismantle_graph(exported_graph)
meta_graph_def.graph_def.CopyFrom(graph_def)
meta_graph_def.meta_info_def.tags.append(tag_constants.SERVING)
meta_graph_def.asset_file_def.extend(asset_info.asset_defs)
for signature_key, signature in signatures.items():
meta_graph_def.signature_def[signature_key].CopyFrom(signature)
meta_graph.strip_graph_default_valued_attrs(meta_graph_def)
return asset_info.asset_filename_map