xref: /aosp_15_r20/external/tensorflow/tensorflow/cc/saved_model/testdata/generate_saved_models.py (revision b6fb3261f9314811a0f4371741dbb8839866f948) 
1# Copyright 2019 The TensorFlow Authors. All Rights Reserved.
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14# ==============================================================================
15"""Standalone utility to generate some test saved models."""
16
17import os
18
19from absl import app
20
21from tensorflow.python.client import session as session_lib
22from tensorflow.python.compat import v2_compat
23from tensorflow.python.eager import def_function
24from tensorflow.python.framework import dtypes
25from tensorflow.python.framework import ops
26from tensorflow.python.framework import tensor_spec
27from tensorflow.python.module import module
28from tensorflow.python.ops import io_ops
29from tensorflow.python.ops import lookup_ops
30from tensorflow.python.ops import variables
31from tensorflow.python.platform import test
32from tensorflow.python.saved_model import save_options
33from tensorflow.python.saved_model import saved_model
34from tensorflow.python.trackable import asset
35
36
37class VarsAndArithmeticObjectGraph(module.Module):
38  """Three vars (one in a sub-module) and compute method."""
39
40  def __init__(self):
41    self.x = variables.Variable(1.0, name="variable_x")
42    self.y = variables.Variable(2.0, name="variable_y")
43    self.child = module.Module()
44    self.child.z = variables.Variable(3.0, name="child_variable")
45    self.child.c = ops.convert_to_tensor(5.0)
46
47  @def_function.function(input_signature=[
48      tensor_spec.TensorSpec((), dtypes.float32),
49      tensor_spec.TensorSpec((), dtypes.float32)
50  ])
51  def compute(self, a, b):
52    return (a + self.x) * (b + self.y) / (self.child.z) + self.child.c
53
54
55class ReferencesParent(module.Module):
56
57  def __init__(self, parent):
58    super(ReferencesParent, self).__init__()
59    self.parent = parent
60    self.my_variable = variables.Variable(3., name="MyVariable")
61
62
63# Creates a cyclic object graph.
64class CyclicModule(module.Module):
65
66  def __init__(self):
67    super(CyclicModule, self).__init__()
68    self.child = ReferencesParent(self)
69
70
71class AssetModule(module.Module):
72
73  def __init__(self):
74    self.asset = asset.Asset(
75        test.test_src_dir_path("cc/saved_model/testdata/test_asset.txt"))
76
77  @def_function.function(input_signature=[])
78  def read_file(self):
79    return io_ops.read_file(self.asset)
80
81
82class StaticHashTableModule(module.Module):
83  """A module with an Asset, StaticHashTable, and a lookup function."""
84
85  def __init__(self):
86    self.asset = asset.Asset(
87        test.test_src_dir_path(
88            "cc/saved_model/testdata/static_hashtable_asset.txt"))
89    self.table = lookup_ops.StaticHashTable(
90        lookup_ops.TextFileInitializer(self.asset, dtypes.string,
91                                       lookup_ops.TextFileIndex.WHOLE_LINE,
92                                       dtypes.int64,
93                                       lookup_ops.TextFileIndex.LINE_NUMBER),
94        -1)
95
96  @def_function.function(
97      input_signature=[tensor_spec.TensorSpec(shape=None, dtype=dtypes.string)])
98  def lookup(self, word):
99    return self.table.lookup(word)
100
101
102def get_simple_session():
103  ops.disable_eager_execution()
104  sess = session_lib.Session()
105  variables.Variable(1.)
106  sess.run(variables.global_variables_initializer())
107  return sess
108
109
110MODULE_CTORS = {
111    "VarsAndArithmeticObjectGraph": (VarsAndArithmeticObjectGraph, 2),
112    "CyclicModule": (CyclicModule, 2),
113    "AssetModule": (AssetModule, 2),
114    "StaticHashTableModule": (StaticHashTableModule, 2),
115    "SimpleV1Model": (get_simple_session, 1)
116}
117
118
119def main(args):
120  if len(args) != 3:
121    print("Expected: {export_path} {ModuleName}")
122    print("Allowed ModuleNames:", MODULE_CTORS.keys())
123    return 1
124
125  _, export_path, module_name = args
126  module_ctor, version = MODULE_CTORS.get(module_name)
127  if not module_ctor:
128    print("Expected ModuleName to be one of:", MODULE_CTORS.keys())
129    return 2
130  os.makedirs(export_path)
131
132  tf_module = module_ctor()
133  if version == 2:
134    options = save_options.SaveOptions(save_debug_info=True)
135    saved_model.save(tf_module, export_path, options=options)
136  else:
137    builder = saved_model.builder.SavedModelBuilder(export_path)
138    builder.add_meta_graph_and_variables(tf_module, ["serve"])
139    builder.save()
140
141
142if __name__ == "__main__":
143  v2_compat.enable_v2_behavior()
144  app.run(main)
145