/// <summary>
/// Returns `MetaGraphDef` proto. Optionally writes it to filename.
/// </summary>
/// <param name="filename"></param>
/// <param name="graph_def"></param>
/// <param name="as_text"></param>
/// <param name="unbound_inputs_col_name"></param>
/// <param name="clear_devices"></param>
/// <param name="saver_def"></param>
/// <param name="clear_extraneous_savers"></param>
/// <param name="strip_default_attrs"></param>
/// <param name="meta_info_def"></param>
/// <returns></returns>
public static MetaGraphDef export_scoped_meta_graph(string filename = "",
GraphDef graph_def = null,
bool as_text = false,
string unbound_inputs_col_name = "unbound_inputs",
bool clear_devices = false,
SaverDef saver_def = null,
bool clear_extraneous_savers = false,
bool strip_default_attrs = false,
byte[] meta_info_def = null)
{
var graph = ops.get_default_graph();
var var_list = new Dictionary <string, RefVariable>();
var variables = graph.get_collection(ops.GraphKeys.GLOBAL_VARIABLES);
foreach (var v in variables as RefVariable[])
{
var_list[v.name] = v;
}
var scoped_meta_graph_def = create_meta_graph_def(
graph_def: graph_def,
export_scope: "",
exclude_nodes: "",
clear_extraneous_savers: clear_extraneous_savers,
saver_def: saver_def,
strip_default_attrs: strip_default_attrs);
throw new NotImplementedException("meta_graph.export_scoped_meta_graph");
}
private static MetaGraphDef create_meta_graph_def(MetaInfoDef meta_info_def = null,
GraphDef graph_def = null,
string export_scope = "",
string exclude_nodes = "",
SaverDef saver_def = null,
bool clear_extraneous_savers = false,
bool strip_default_attrs = false)
{
// Sets graph to default graph if it's not passed in.
var graph = ops.get_default_graph().as_default();
// Creates a MetaGraphDef proto.
var meta_graph_def = new MetaGraphDef();
if (meta_info_def == null)
{
meta_info_def = new MetaInfoDef();
}
// Set the tf version strings to the current tf build.
meta_info_def.TensorflowVersion = tf.VERSION;
meta_info_def.TensorflowGitVersion = "unknown";
meta_graph_def.MetaInfoDef = meta_info_def;
// Adds graph_def or the default.
if (graph_def == null)
{
meta_graph_def.GraphDef = graph.as_graph_def(add_shapes: true);
}
else
{
meta_graph_def.GraphDef = graph_def;
}
// Fills in meta_info_def.stripped_op_list using the ops from graph_def.
if (meta_graph_def.MetaInfoDef.StrippedOpList == null ||
meta_graph_def.MetaInfoDef.StrippedOpList.Op.Count == 0)
{
meta_graph_def.MetaInfoDef.StrippedOpList = stripped_op_list_for_graph(meta_graph_def.GraphDef);
}
var clist = graph.get_all_collection_keys();
foreach (var ctype in clist)
{
if (clear_extraneous_savers)
{
throw new NotImplementedException("create_meta_graph_def clear_extraneous_savers");
}
else
{
add_collection_def(meta_graph_def, ctype, graph);
}
}
return(meta_graph_def);
}
private void _build(string checkpoint_path, bool build_save, bool build_restore)
{
if (_is_built)
{
return;
}
_is_built = true;
if (_saver_def == null)
{
if (_builder == null)
{
_builder = new BulkSaverBuilder(_write_version);
}
if (_var_list == null)
{
_var_list = variables._all_saveable_objects();
}
if (_var_list == null || _var_list.Length == 0)
{
if (_allow_empty)
{
_is_empty = true;
return;
}
else
{
throw new ValueError("No variables to save");
}
}
_is_empty = false;
_saver_def = _builder._build_internal(_var_list,
reshape: _reshape,
sharded: _sharded,
max_to_keep: _max_to_keep,
keep_checkpoint_every_n_hours: _keep_checkpoint_every_n_hours,
name: _name,
restore_sequentially: _restore_sequentially,
filename: checkpoint_path,
build_save: build_save,
build_restore: build_restore);
}
else if (_saver_def != null && !string.IsNullOrEmpty(_name))
{
throw new NotImplementedException("Saver._build");
}
_check_saver_def();
_next_checkpoint_time = time() + _saver_def.KeepCheckpointEveryNHours * 3600;
}
public Saver(IVariableV1[] var_list = null,
bool reshape = false,
bool sharded = false,
int max_to_keep = 5,
float keep_checkpoint_every_n_hours = 10000,
string name = null,
bool restore_sequentially = false,
SaverDef saver_def = null,
ISaverBuilder builder = null,
bool defer_build = false,
bool allow_empty = false,
SaverDef.Types.CheckpointFormatVersion write_version = SaverDef.Types.CheckpointFormatVersion.V2,
bool pad_step_number = false,
bool save_relative_paths = false,
string filename = "")
{
_var_list = var_list;
_reshape = reshape;
_sharded = sharded;
_max_to_keep = max_to_keep;
_keep_checkpoint_every_n_hours = keep_checkpoint_every_n_hours;
_name = name;
_restore_sequentially = restore_sequentially;
_saver_def = saver_def;
_builder = builder;
_is_built = false;
_allow_empty = allow_empty;
_write_version = write_version;
_pad_step_number = pad_step_number;
if (!defer_build)
{
build();
}
if (_saver_def != null)
{
_check_saver_def();
_write_version = _saver_def.Version;
}
_save_relative_paths = save_relative_paths;
_object_restore_saver = null;
_last_checkpoints = new Dictionary <string, float>();
_checkpoints_to_be_deleted = new Dictionary <string, float>();
}
public MetaGraphDef export_meta_graph(string filename = "",
byte[] meta_info_def = null,
GraphDef graph_def = null,
SaverDef saver_def = null,
string[] collection_list = null,
bool as_text = false,
bool clear_devices = false,
bool clear_extraneous_savers = false,
bool strip_default_attrs = false,
string export_scope = "")
{
var meta_graph_def = meta_graph.export_scoped_meta_graph(
filename: filename,
meta_info_def: meta_info_def,
graph_def: graph_def,
saver_def: saver_def,
// collection_list: collection_list,
as_text: as_text,
clear_devices: clear_devices,
clear_extraneous_savers: clear_extraneous_savers,
strip_default_attrs: strip_default_attrs);
return(meta_graph_def.Item1);
}
/// <summary>
/// Returns `MetaGraphDef` proto. Optionally writes it to filename.
/// </summary>
/// <param name="filename"></param>
/// <param name="graph_def"></param>
/// <param name="as_text"></param>
/// <param name="unbound_inputs_col_name"></param>
/// <param name="clear_devices"></param>
/// <param name="saver_def"></param>
/// <param name="clear_extraneous_savers"></param>
/// <param name="strip_default_attrs"></param>
/// <param name="meta_info_def"></param>
/// <returns></returns>
public static (MetaGraphDef, Dictionary <string, IVariableV1>) export_scoped_meta_graph(string filename = "",
GraphDef graph_def = null,
bool as_text = false,
string unbound_inputs_col_name = "unbound_inputs",
bool clear_devices = false,
SaverDef saver_def = null,
bool clear_extraneous_savers = false,
bool strip_default_attrs = false,
byte[] meta_info_def = null)
{
var graph = ops.get_default_graph();
var var_list = new Dictionary <string, IVariableV1>();
var variables = graph.get_collection <IVariableV1>(tf.GraphKeys.GLOBAL_VARIABLES);
if (variables != null)
{
foreach (var v in variables)
{
var_list[v.Name] = v;
}
}
var scoped_meta_graph_def = create_meta_graph_def(
graph_def: graph_def,
export_scope: "",
exclude_nodes: "",
clear_extraneous_savers: clear_extraneous_savers,
saver_def: saver_def,
strip_default_attrs: strip_default_attrs);
if (!string.IsNullOrEmpty(filename))
{
graph_io.write_graph(scoped_meta_graph_def, "", filename, as_text: as_text);
}
return(scoped_meta_graph_def, var_list);
}