chore: update CLI to accept log level as string

Author: bchampp

src/aws_durable_execution_sdk_python_testing/cli.py

@@ -44,7 +44,7 @@ class CliConfig:
     # Server configuration
     host: str = "0.0.0.0"  # noqa:S104
     port: int = 5000
-    log_level: int = 20  # INFO level
+    log_level: str = "info"
     lambda_endpoint: str = "http://127.0.0.1:3001"
     local_runner_endpoint: str = "http://0.0.0.0:5000"
     local_runner_region: str = "us-west-2"
@@ -56,7 +56,7 @@ def from_environment(cls) -> CliConfig:
         return cls(
             host=os.getenv("AWS_DEX_HOST", "0.0.0.0"),  # noqa:S104
             port=int(os.getenv("AWS_DEX_PORT", "5000")),
-            log_level=int(os.getenv("AWS_DEX_LOG_LEVEL", "20")),
+            log_level=os.getenv("AWS_DEX_LOG_LEVEL", "info"),
             lambda_endpoint=os.getenv(
                 "AWS_DEX_LAMBDA_ENDPOINT", "http://127.0.0.1:3001"
             ),
@@ -90,9 +90,9 @@ def run(self, args: list[str] | None = None) -> int:
 
             # Configure logging based on log level
             logging.basicConfig(
-                level=parsed_args.log_level
+                level=getattr(logging, parsed_args.log_level.upper())
                 if hasattr(parsed_args, "log_level")
-                else self.config.log_level,
+                else getattr(logging, self.config.log_level.upper()),
                 format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
             )
 
@@ -151,9 +151,10 @@ def _create_start_server_parser(self, subparsers) -> None:
         )
         start_server_parser.add_argument(
             "--log-level",
-            type=int,
+            type=str,
+            choices=["debug", "info", "warning", "error", "critical"],
             default=self.config.log_level,
-            help=f"Logging level as integer (default: {self.config.log_level}, env: AWS_DEX_LOG_LEVEL)",
+            help=f"Logging level (default: {self.config.log_level}, env: AWS_DEX_LOG_LEVEL)",
         )
         start_server_parser.add_argument(
             "--lambda-endpoint",