!4363 export and load model for serving

Merge pull request !4363 from hexia/export_and_load_model_for_serving

mindspore/ccsrc/utils/load_onnx/anf_converter.cc

@@ -57,7 +57,7 @@ int AnfConverter::ValidateFileStr(const std::string &modelFile, std::string file
 
 bool AnfConverter::ReadOnnxFromBinary(const std::string &modelFile, google::protobuf::Message *onnx_model) {
   std::unique_ptr<char> onnx_file(new (std::nothrow) char[PATH_MAX]{0});
-  int fd = open(onnx_file.get(), O_RDONLY);
+  int fd = open(modelFile.c_str(), O_RDONLY);
   if (fd < 0) {
     MS_LOG(EXCEPTION) << "failed to open file";
   }

mindspore/ccsrc/utils/load_onnx/anf_model_parser.h

@@ -52,18 +52,17 @@ class MSANFModelParser {
   bool GetAttrValueForCNode(const PrimitivePtr &prim, const onnx::AttributeProto &attr_proto);
   bool ObtainCNodeAttrInTypeForm(const PrimitivePtr &prim, const std::string &attr_name,
                                  const onnx::TensorProto &attr_tensor);
-  bool ObtainCNodeAttrInScalarForm(const PrimitivePtr &prim, const std::string &attr_name,
-                                   const onnx::TensorProto &attr_tensor);
+  ValuePtr ObtainCNodeAttrInScalarForm(const onnx::TensorProto &attr_tensor);
   bool ObtainCNodeAttrInTensorForm(const PrimitivePtr &prim, const std::string &attr_name,
                                    const onnx::TensorProto &attr_tensor);
   bool BuildValueNodeForFuncGraph(const onnx::NodeProto &node_proto);
   bool ObtainValueNodeInTensorForm(const string &value_node_name, const onnx::TensorProto &attr_tensor);
 
   bool ObtainValueNodeInScalarForm(const string &value_node_name, const onnx::TensorProto &attr_tensor);
-  bool GetAttrValueForValueNode(const string &ref_attr_name, const std::string &value_node_name,
-                                const onnx::TensorProto &attr_tensor);
+  bool GetAttrValueForValueNode(const std::string &value_node_name, const onnx::AttributeProto &attr_tensor);
   bool ObtainValueNodeInTypeForm(const string &value_node_name, const onnx::TensorProto &attr_tensor);
-  AbstractBasePtr GetAbstractForCNode(const onnx::AttributeProto &attr_proto);
+  std::unordered_map<std::string, abstract::AbstractBasePtr> GetAbstractForCNode(
+    const onnx::AttributeProto &attr_proto);
 
   std::string producer_name_;
   int model_version_;