Fix: remove the redundant catch blocks

Author: papriwal

src/sagemaker/hyperpod/cli/cluster_utils.py

@@ -40,26 +40,17 @@ def _get_current_aws_identity(session: boto3.Session) -> Tuple[str, str]:
         parts = arn.split('/')
         if len(parts) >= 3:
             role_name = parts[1]  # Extract role name from ARN
-            
-            # Validate role name before API call
-            if not role_name or not role_name.strip():
-                logger.debug(f"Invalid role name extracted from ARN: {arn}")
+        
+            # Try IAM API first (preferred method)
+            try:
+                iam_client = session.client('iam')
+                role_response = iam_client.get_role(RoleName=role_name)
+                # Use actual ARN from IAM API
+                arn = role_response['Role']['Arn']
+                logger.debug(f"Retrieved base role ARN from IAM API: {arn}")
+            except Exception as e:
+                logger.debug(f"IAM API failed, falling back to string replacement: {e}")
                 arn = arn.replace(':sts:', ':iam:').replace(':assumed-role/', ':role/').rsplit('/', 1)[0]
-            else:
-                # Try IAM API first (preferred method)
-                try:
-                    iam_client = session.client('iam')
-                    role_response = iam_client.get_role(RoleName=role_name)
-                    arn = role_response['Role']['Arn']  # Use actual ARN from IAM API
-                    logger.debug(f"Retrieved base role ARN from IAM API: {arn}")
-                except ClientError as e:
-                    # Fall back to string replacement if IAM API fails
-                    logger.debug(f"IAM API failed, falling back to string replacement: {e}")
-                    arn = arn.replace(':sts:', ':iam:').replace(':assumed-role/', ':role/').rsplit('/', 1)[0]
-                except Exception as e:
-                    # Fall back to string replacement for any other errors
-                    logger.debug(f"Unexpected error with IAM API, falling back to string replacement: {e}")
-                    arn = arn.replace(':sts:', ':iam:').replace(':assumed-role/', ':role/').rsplit('/', 1)[0]
     else:
         identity_type = 'unknown'