[ONNX] Translate ONNX metadata with delegate (#32675)

### Details:
 - *Translate ONNX metadata with delegate*

### Tickets:
 - *ticket-id*

Signed-off-by: Maxim Vafin <[email protected]>

Author: mvafin

src/frontends/onnx/frontend/include/openvino/frontend/onnx/graph_iterator.hpp

@@ -47,6 +47,9 @@ class ONNX_FRONTEND_API GraphIterator : ::ov::RuntimeAttribute {
     /// If there are no domain found returns -1
     virtual int64_t get_opset_version(const std::string& domain) const = 0;
 
+    /// \brief Retrieves metadata associated with the graph.
+    virtual std::map<std::string, std::string> get_metadata() const = 0;
+
     /// \brief Destructor
     virtual ~GraphIterator();
 };

src/frontends/onnx/frontend/src/core/graph_iterator_proto.cpp

@@ -502,6 +502,20 @@ std::int64_t GraphIteratorProto::get_opset_version(const std::string& domain) co
     return -1;
 }
 
+std::map<std::string, std::string> GraphIteratorProto::get_metadata() const {
+    std::map<std::string, std::string> metadata;
+
+    if (!m_model) {
+        return metadata;
+    }
+
+    const auto& model_metadata = m_model->metadata_props();
+    for (const auto& prop : model_metadata) {
+        metadata.emplace(prop.key(), prop.value());
+    }
+    return metadata;
+}
+
 namespace detail {
 namespace {
 enum Field {

src/frontends/onnx/frontend/src/core/graph_iterator_proto.hpp

@@ -119,6 +119,8 @@ class GraphIteratorProto : public ov::frontend::onnx::GraphIterator {
 
     std::int64_t get_opset_version(const std::string& domain) const override;
 
+    std::map<std::string, std::string> get_metadata() const override;
+
     std::string get_model_dir() const {
         return *m_model_dir;
     }

src/frontends/onnx/frontend/src/input_model.cpp

@@ -604,6 +604,10 @@ class InputModel::InputModelONNXImpl {
     void extract_subgraph(const std::vector<ov::frontend::Place::Ptr>& inputs,
                           const std::vector<ov::frontend::Place::Ptr>& outputs);
 
+    std::map<std::string, std::string> get_metadata() const {
+        return m_metadata;
+    }
+
     std::shared_ptr<TelemetryExtension> get_telemetry_extension() const {
         return m_telemetry;
     }
@@ -633,6 +637,7 @@ class InputModel::InputModelONNXImpl {
     std::shared_ptr<GraphIterator> m_graph_iterator;
     const ov::frontend::InputModel& m_input_model;
     std::vector<std::shared_ptr<ov::frontend::onnx::unify::InputModel>> m_subgraphs;
+    std::map<std::string, std::string> m_metadata;
     std::shared_ptr<TelemetryExtension> m_telemetry;
     bool m_enable_mmap;
 
@@ -753,6 +758,8 @@ void InputModel::InputModelONNXImpl::load_model() {
             m_telemetry->send_event("op_count", "onnx_" + op.first, static_cast<int>(op.second));
         }
     }
+
+    m_metadata = m_graph_iterator->get_metadata();
 }
 
 InputModel::InputModelONNXImpl::InputModelONNXImpl(const GraphIterator::Ptr& graph_iterator,
@@ -947,6 +954,10 @@ void InputModel::extract_subgraph(const std::vector<ov::frontend::Place::Ptr>& i
     _impl->extract_subgraph(inputs, outputs);
 }
 
+std::map<std::string, std::string> InputModel::get_metadata() const {
+    return _impl->get_metadata();
+}
+
 std::shared_ptr<TelemetryExtension> InputModel::get_telemetry_extension() {
     return _impl->get_telemetry_extension();
 }

src/frontends/onnx/frontend/src/input_model.hpp

@@ -146,6 +146,7 @@ class InputModel : public ov::frontend::InputModel {
     void extract_subgraph(const std::vector<ov::frontend::Place::Ptr>& inputs,
                           const std::vector<ov::frontend::Place::Ptr>& outputs) override;
 
+    std::map<std::string, std::string> get_metadata() const;
     std::shared_ptr<TelemetryExtension> get_telemetry_extension();
 
     bool is_enabled_mmap() const;

src/frontends/onnx/frontend/src/translate_session.cpp

@@ -217,4 +217,10 @@ void TranslateSession::translate_graph(const ov::frontend::InputModel::Ptr& inpu
 
     auto model_name = "onnx_Frontend_IR";
     ov_model = std::make_shared<ov::Model>(results, m_parameters, model_name);
+
+    const auto& metadata = model_onnx->get_metadata();
+    const std::string framework_section = "framework";
+    for (const auto& pair : metadata) {
+        ov_model->set_rt_info(pair.second, framework_section, pair.first);
+    }
 }

src/frontends/onnx/tests/graph_iterator.cpp

@@ -38,6 +38,10 @@ TEST_P(FrontEndLoadFromTest, testLoadUsingSimpleGraphIterator) {
             return 1;
         }
 
+        std::map<std::string, std::string> get_metadata() const override {
+            return {};
+        }
+
         ~SimpleIterator() override {};
     };