Add verbose argument to ServerApp

src/py/flwr/server/run_serverapp.py

@@ -22,7 +22,7 @@
 from typing import Optional
 
 from flwr.common import Context, EventType, RecordSet, event
-from flwr.common.logger import log
+from flwr.common.logger import log, logger
 
 from .driver.driver import Driver
 from .server_app import ServerApp, load_server_app
@@ -69,6 +69,10 @@ def run_server_app() -> None:
 
     args = _parse_args_run_server_app().parse_args()
 
+    if args.verbose:
+        for handler in logger.handlers:
+            handler.setLevel(DEBUG)
+
     # Obtain certificates
     if args.insecure:
         if args.root_certificates is not None:
@@ -146,6 +150,11 @@ def _parse_args_run_server_app() -> argparse.ArgumentParser:
         help="Run the server app without HTTPS. By default, the app runs with "
         "HTTPS enabled. Use this flag only if you understand the risks.",
     )
+    parser.add_argument(
+        "--verbose",
+        action="store_true",
+        help="Set the logging to `DEBUG`.",
+    )
     parser.add_argument(
         "--root-certificates",
         metavar="ROOT_CERT",