add onnx model parse api

parser/onnx/onnx_parser.cc

@@ -506,7 +506,6 @@ Status OnnxModelParser::GetModelFromFile(const char *file, ge::onnx::ModelProto
   GELOGI("File path is %s.", file);
 
   // 1. Get graph from onnx model file.
-  ge::onnx::ModelProto onnx_model;
   if (!ge::parser::ReadProtoFromBinaryFile(file, onnx_model)) {
     ErrorManager::GetInstance().ATCReportErrMessage(
         "E19021", {"reason"}, {"Read onnx model file failed."});
@@ -520,11 +519,10 @@ Status OnnxModelParser::GetModelFromMemory(const char *data, uint32_t size, ge::
   GE_CHECK_NOTNULL(data);
 
   // 1. Get graph from onnx model file.
-  ge::onnx::ModelProto onnx_model;
-  if (!ge::parser::ReadProtoFromArray(file, onnx_model)) {
+  if (!ge::parser::ReadProtoFromArray(data, onnx_model)) {
     ErrorManager::GetInstance().ATCReportErrMessage(
         "E19021", {"reason"}, {"Read onnx model from memory failed."});
-    GELOGE(PARAM_INVALID, "Read onnx model file failed.");
+    GELOGE(PARAM_INVALID, "Read onnx model from memory failed.");
     return FAILED;
   }
   return SUCCESS;
@@ -652,6 +650,7 @@ Status OnnxModelParser::ParseFromMemory(const char *data, uint32_t size, ge::Gra
     return FAILED;
   }
 }
+
 Status OnnxModelParser::ToJson(const char *model_file, const char *json_file) {
   if (model_file == nullptr) {
     GELOGE(FAILED, "Model file is nullptr.");