aboutsummaryrefslogtreecommitdiffhomepage
path: root/tensorflow/cc/saved_model/reader.cc
diff options
context:
space:
mode:
Diffstat (limited to 'tensorflow/cc/saved_model/reader.cc')
-rw-r--r--tensorflow/cc/saved_model/reader.cc88
1 files changed, 88 insertions, 0 deletions
diff --git a/tensorflow/cc/saved_model/reader.cc b/tensorflow/cc/saved_model/reader.cc
new file mode 100644
index 0000000000..2146c8a197
--- /dev/null
+++ b/tensorflow/cc/saved_model/reader.cc
@@ -0,0 +1,88 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "tensorflow/cc/saved_model/reader.h"
+
+#include <unordered_set>
+
+#include "tensorflow/cc/saved_model/constants.h"
+#include "tensorflow/core/lib/io/path.h"
+#include "tensorflow/core/lib/strings/str_util.h"
+#include "tensorflow/core/lib/strings/strcat.h"
+#include "tensorflow/core/platform/env.h"
+#include "tensorflow/core/protobuf/saved_model.pb.h"
+
+namespace tensorflow {
+namespace {
+
+Status ReadSavedModel(const string& export_dir, SavedModel* saved_model_proto) {
+ LOG(INFO) << "Reading SavedModel from: " << export_dir;
+
+ const string saved_model_pb_path =
+ io::JoinPath(export_dir, kSavedModelFilenamePb);
+ if (Env::Default()->FileExists(saved_model_pb_path).ok()) {
+ return ReadBinaryProto(Env::Default(), saved_model_pb_path,
+ saved_model_proto);
+ }
+ const string saved_model_pbtxt_path =
+ io::JoinPath(export_dir, kSavedModelFilenamePbTxt);
+ if (Env::Default()->FileExists(saved_model_pbtxt_path).ok()) {
+ return ReadTextProto(Env::Default(), saved_model_pbtxt_path,
+ saved_model_proto);
+ }
+ return Status(error::Code::NOT_FOUND,
+ "Could not find SavedModel .pb or .pbtxt at supplied export "
+ "directory path: " +
+ export_dir);
+}
+
+Status FindMetaGraphDef(const SavedModel& saved_model_proto,
+ const std::unordered_set<string>& tags,
+ MetaGraphDef* meta_graph_def) {
+ LOG(INFO) << "Reading meta graph with tags { " << str_util::Join(tags, " ")
+ << " }";
+ for (const MetaGraphDef& graph_def : saved_model_proto.meta_graphs()) {
+ // Get tags from the graph_def.
+ std::unordered_set<string> graph_tags;
+ for (const string& tag : graph_def.meta_info_def().tags()) {
+ graph_tags.insert(tag);
+ }
+ // Match with the set of tags provided.
+ if (graph_tags == tags) {
+ *meta_graph_def = graph_def;
+ return Status::OK();
+ }
+ }
+ return Status(
+ error::Code::NOT_FOUND,
+ strings::StrCat(
+ "Could not find meta graph def matching supplied tags: { ",
+ str_util::Join(tags, " "),
+ " }. To inspect available tag-sets in the SavedModel, please "
+ "use the SavedModel CLI: `saved_model_cli`"));
+}
+
+} // namespace
+
+Status ReadMetaGraphDefFromSavedModel(const string& export_dir,
+ const std::unordered_set<string>& tags,
+ MetaGraphDef* const meta_graph_def) {
+ SavedModel saved_model_proto;
+ TF_RETURN_IF_ERROR(ReadSavedModel(export_dir, &saved_model_proto));
+ TF_RETURN_IF_ERROR(FindMetaGraphDef(saved_model_proto, tags, meta_graph_def));
+ return Status::OK();
+}
+
+} // namespace tensorflow