LCORE-158: selectable configuration dump

src/lightspeed-stack.py

@@ -1,6 +1,8 @@
 """Lightspeed stack."""
 
+from argparse import ArgumentParser
 import logging
+
 from runners.uvicorn import start_uvicorn
 from models.config import Configuration
 from configuration import configuration
@@ -14,12 +16,51 @@
 
 logger = logging.getLogger(__name__)
 
-if __name__ == "__main__":
+
+def create_argument_parser() -> ArgumentParser:
+    parser = ArgumentParser()
+    parser.add_argument(
+        "-v",
+        "--verbose",
+        dest="verbose",
+        help="make it verbose",
+        action="store_true",
+        default=None,
+    )
+    parser.add_argument(
+        "-d",
+        "--dump-configuration",
+        dest="dump_configuration",
+        help="dump actual configuration into JSON file and quit",
+        action="store_true",
+        default=None,
+    )
+    return parser
+
+
+def dump_configuration(configuration: Configuration) -> None:
+    """Dump actual configuration into JSON file."""
+    with open("configuration.json", "w", encoding="utf-8") as fout:
+        fout.write(configuration.model_dump_json(indent=4))
+
+
+def main() -> None:
     logger.info("Lightspeed stack startup")
+    parser = create_argument_parser()
+    args = parser.parse_args()
+
     configuration.load_configuration("lightspeed-stack.yaml")
     logger.info("Configuration: %s", configuration.configuration)
     logger.info(
         "Llama stack configuration: %s", configuration.llama_stack_configuration
     )
-    start_uvicorn()
+
+    if args.dump_configuration:
+        dump_configuration(configuration.configuration)
+    else:
+        start_uvicorn()
     logger.info("Lightspeed stack finished")
+
+
+if __name__ == "__main__":
+    main()