1 /* Copyright 2015 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
16 #ifndef TENSORFLOW_CORE_PLATFORM_PROTOBUF_INTERNAL_H_
17 #define TENSORFLOW_CORE_PLATFORM_PROTOBUF_INTERNAL_H_
18
19 #include "google/protobuf/any.pb.h"
20 #include "tensorflow/core/lib/core/errors.h"
21 #include "tensorflow/core/platform/platform.h"
22 #include "tensorflow/core/platform/protobuf.h"
23 #include "tensorflow/core/platform/types.h"
24
25 namespace tensorflow {
26
27 // Returns the DebugString when available, or a stub message otherwise. Useful
28 // for messages that are incompatible with proto_text (e.g. those using Any).
29 #ifdef TENSORFLOW_LITE_PROTOS
30 template <class T>
DebugStringIfAvailable(T proto)31 string DebugStringIfAvailable(T proto) {
32 return "[DebugString not available with lite protos]";
33 }
34 #else
35 template <class T>
36 auto DebugStringIfAvailable(T proto) -> decltype(proto.DebugString()) {
37 return proto.DebugString();
38 }
39 #endif // defined(TENSORFLOW_LITE_PROTOS)
40
41 // Utility for parsing an Any value with full or lite protos.
42 template <class T>
ParseAny(const google::protobuf::Any & any,T * message,const string & type_name)43 Status ParseAny(const google::protobuf::Any& any, T* message,
44 const string& type_name) {
45 #ifdef TENSORFLOW_LITE_PROTOS
46 if (any.type_url() != strings::StrCat("type.googleapis.com/", type_name)) {
47 return errors::FailedPrecondition(
48 "Expected Any type_url for: ", type_name,
49 ". Got: ", string(any.type_url().data(), any.type_url().size()), ".");
50 }
51 if (!message->ParseFromString(any.value())) {
52 return errors::FailedPrecondition("Failed to unpack: ",
53 DebugStringIfAvailable(any));
54 }
55 #else
56 CHECK_EQ(type_name, message->descriptor()->full_name());
57 if (!any.Is<T>()) {
58 return errors::FailedPrecondition(
59 "Expected Any type_url for: ", message->descriptor()->full_name(),
60 ". Got: ", string(any.type_url().data(), any.type_url().size()), ".");
61 }
62 if (!any.UnpackTo(message)) {
63 return errors::FailedPrecondition("Failed to unpack: ",
64 DebugStringIfAvailable(any));
65 }
66 #endif
67 return Status::OK();
68 }
69
70 } // namespace tensorflow
71
72 #endif // TENSORFLOW_CORE_PLATFORM_PROTOBUF_INTERNAL_H_
73