feat: add inja example (#1969)

* feat: add inja example

* chore: add README.md

* fix: temp comment out sync

---------

Co-authored-by: sangjanai <sang@jan.ai>

Author: vansangpfiev

Diff for: engine/CMakeLists.txt

@@ -62,12 +62,16 @@ add_compile_definitions(CORTEX_CPP_VERSION="${CORTEX_CPP_VERSION}")
 add_compile_definitions(CORTEX_CONFIG_FILE_PATH="${CORTEX_CONFIG_FILE_PATH}")
 
 option(CMAKE_BUILD_TEST "Enable testing" OFF)
+option(CMAKE_BUILD_INJA_TEST "Enable inja example" OFF)
 if(CMAKE_BUILD_TEST)
   add_subdirectory(test)
 endif()
 
 add_subdirectory(cli)
 
+if(CMAKE_BUILD_INJA_TEST)
+  add_subdirectory(examples/inja)
+endif()
 
 
 find_package(jsoncpp CONFIG REQUIRED)

Diff for: engine/examples/inja/CMakeLists.txt

@@ -0,0 +1,66 @@
+project(inja-test C CXX)
+
+include(CheckIncludeFileCXX)
+
+check_include_file_cxx(any HAS_ANY)
+check_include_file_cxx(string_view HAS_STRING_VIEW)
+check_include_file_cxx(coroutine HAS_COROUTINE)
+if(HAS_ANY
+   AND HAS_STRING_VIEW
+   AND HAS_COROUTINE)
+  set(CMAKE_CXX_STANDARD 20)
+elseif(HAS_ANY AND HAS_STRING_VIEW)
+  set(CMAKE_CXX_STANDARD 17)
+else()
+  set(CMAKE_CXX_STANDARD 14)
+endif()
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(OPENSSL_USE_STATIC_LIBS TRUE)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+if(MSVC)
+  add_compile_options(
+      $<$<CONFIG:>:/MT> #---------|
+      $<$<CONFIG:Debug>:/MTd> #---|-- Statically link the runtime libraries
+      $<$<CONFIG:Release>:/MT> #--|
+  )
+
+  add_compile_options(/utf-8)
+  add_definitions(-DUNICODE -D_UNICODE)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /DUNICODE /D_UNICODE")
+endif()
+
+find_package(jsoncpp CONFIG REQUIRED)
+find_package(Trantor CONFIG REQUIRED)
+set(TARGET_NAME ${PROJECT_NAME})
+
+add_executable(${TARGET_NAME} main.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../extensions/template_renderer.cc
+  )
+
+target_link_libraries(${TARGET_NAME} PRIVATE JsonCpp::JsonCpp)
+target_link_libraries(${TARGET_NAME} PRIVATE Trantor::Trantor)
+
+# ##############################################################################
+
+if(CMAKE_CXX_STANDARD LESS 17)
+  # With C++14, use boost to support any and std::string_view
+  message(STATUS "use c++14")
+  find_package(Boost 1.61.0 REQUIRED)
+  target_include_directories(${TARGET_NAME} PRIVATE ${Boost_INCLUDE_DIRS})
+elseif(CMAKE_CXX_STANDARD LESS 20)
+  message(STATUS "use c++17")
+else()
+  message(STATUS "use c++20")
+endif()
+ 
+target_include_directories(${TARGET_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../..)
+target_include_directories(${TARGET_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+
+set_target_properties(${TARGET_NAME} PROPERTIES
+                      RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_BINARY_DIR}
+                      RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR}
+                      RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}
+)

Diff for: engine/examples/inja/README.md

@@ -0,0 +1,5 @@
+Build cortex with `CMAKE_BUILD_INJA_TEST=ON`
+
+```bash title="Run inja-test"
+./inja-test --template path_to_template_file --data path_to_data_file
+```

Diff for: engine/examples/inja/data.txt

@@ -0,0 +1,17 @@
+{
+    "choices": [
+        {
+            "delta": {
+                "content": " questions"
+            },
+            "finish_reason": null,
+            "index": 0
+        }
+    ],
+    "created": 1735372587,
+    "id": "",
+    "model": "o1-preview",
+    "object": "chat.completion.chunk",
+    "stream": true,
+    "system_fingerprint": "fp_1ddf0263de"
+}

Diff for: engine/examples/inja/main.cc

@@ -0,0 +1,45 @@
+#include "extensions/template_renderer.h"
+#include "utils/json_helper.h"
+
+void print_help() {
+  std::cout << "Usage: \ninja-test [options]\n\n";
+  std::cout << "Options:\n";
+  std::cout << "  --template  Path to template file\n";
+  std::cout << "  --data      Path to data file\n";
+
+  exit(0);
+}
+
+int main(int argc, char* argv[]) {
+  std::filesystem::path template_path;
+  std::filesystem::path data_path;
+  for (int i = 0; i < argc; i++) {
+    if (strcmp(argv[i], "--template") == 0) {
+      template_path = argv[i + 1];
+    } else if (strcmp(argv[i], "--data") == 0) {
+      data_path = argv[i + 1];
+    } else if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
+      print_help();
+    }
+  }
+
+  auto get_str = [](const std::filesystem::path& p) {
+    std::ifstream ifs(p);
+    std::stringstream buffer;
+    buffer << ifs.rdbuf();
+    return buffer.str();
+  };
+
+  std::string tpl = get_str(template_path);
+  std::string message = get_str(data_path);
+  auto data = json_helper::ParseJsonString(message);
+
+  extensions::TemplateRenderer rdr;
+  auto res = rdr.Render(tpl, data);
+  std::cout << std::endl;
+  std::cout << "Result: " << std::endl;
+  std::cout << res << std::endl;
+  std::cout << std::endl;
+
+  return 0;
+}

Diff for: engine/examples/inja/template.txt

@@ -0,0 +1,10 @@
+{ 
+    {% set first = true %} 
+    {% for key, value in input_request %} 
+        {% if  key == "choices" or key == "created" or key == "model" or key == "service_tier" or key == "system_fingerprint" or key == "stream" or key == "object" or key == "usage" %} 
+          {% if not first %},{% endif %} 
+            "{{ key }}": {{ tojson(value) }} 
+          {% set first = false %} 
+        {% endif %} 
+    {% endfor %} 
+}

Diff for: engine/services/model_source_service.cc

@@ -64,7 +64,8 @@ std::vector<ModelInfo> ParseJsonString(const std::string& json_str) {
 ModelSourceService::ModelSourceService(
     std::shared_ptr<DatabaseService> db_service)
     : db_service_(db_service) {
-  sync_db_thread_ = std::thread(&ModelSourceService::SyncModelSource, this);
+  // TODO(sang) temporariy comment out because of race condition bug
+  // sync_db_thread_ = std::thread(&ModelSourceService::SyncModelSource, this);
   running_ = true;
 }