From 1c40ba76992c7a05850df647967eb2e85a474694 Mon Sep 17 00:00:00 2001
From: Pavel Tisnovsky <ptisnovs@redhat.com>
Date: Mon, 12 May 2025 09:36:20 +0200
Subject: [PATCH] Configuration loading code

---
 src/configuration.py    | 43 +++++++++++++++++++++++++++++++++++++++++
 src/lightspeed-stack.py | 14 +++-----------
 2 files changed, 46 insertions(+), 11 deletions(-)
 create mode 100644 src/configuration.py

diff --git a/src/configuration.py b/src/configuration.py
new file mode 100644
index 00000000..4a29a163
--- /dev/null
+++ b/src/configuration.py
@@ -0,0 +1,43 @@
+import yaml
+
+from typing import Any, Optional
+from models.config import Configuration, LLamaStackConfiguration
+
+
+class AppConfig:
+    _instance = None
+
+    def __new__(cls, *args: Any, **kwargs: Any) -> "AppConfig":
+        """Create a new instance of the class."""
+        if not isinstance(cls._instance, cls):
+            cls._instance = super().__new__(cls, *args, **kwargs)
+        return cls._instance
+
+    def __init__(self) -> None:
+        """Initialize the class instance."""
+        self._configuration: Optional[Configuration] = None
+
+    def load_configuration(self, filename: str) -> None:
+        """Load configuration from YAML file."""
+        with open(filename, encoding="utf-8") as fin:
+            config_dict = yaml.safe_load(fin)
+            print(config_dict)
+            self._configuration = Configuration(**config_dict)
+
+    @property
+    def configuration(self) -> Configuration:
+        assert (
+            self._configuration is not None
+        ), "logic error: configuration is not loaded"
+        return self._configuration
+
+    @property
+    def llama_stack_configuration(self) -> LLamaStackConfiguration:
+        assert (
+            self._configuration is not None
+        ), "logic error: configuration is not loaded"
+        return self._configuration.llama_stack
+
+
+configuration: AppConfig = AppConfig()
+xyz: str = "XYZ"
diff --git a/src/lightspeed-stack.py b/src/lightspeed-stack.py
index d2c34258..2f869748 100644
--- a/src/lightspeed-stack.py
+++ b/src/lightspeed-stack.py
@@ -1,21 +1,13 @@
 """Lightspeed stack."""
 
-import yaml
-
 from runners.uvicorn import start_uvicorn
 from models.config import Configuration
-
-
-def load_configuration(filename: str) -> Configuration:
-    """Load configuration from YAML file."""
-    with open(filename, encoding="utf-8") as fin:
-        config_dict = yaml.safe_load(fin)
-        print(config_dict)
-        return Configuration(**config_dict)
+from configuration import configuration
 
 
 if __name__ == "__main__":
     print("Lightspeed stack")
-    configuration = load_configuration("lightspeed-stack.yaml")
+    configuration.load_configuration("lightspeed-stack.yaml")
     print(configuration)
+    print(configuration.llama_stack_configuration)
     start_uvicorn()