feat(grpc): Add util method to extract Task ID and Push Notification Config ID from request

src/a2a/utils/proto_utils.py

@@ -366,6 +366,37 @@ def task_push_notification_config(
             ),
         )
 
+    @classmethod
+    def task_push_notification_config_params(
+        cls,
+        request: (
+            a2a_pb2.GetTaskPushNotificationConfigRequest
+            | a2a_pb2.DeleteTaskPushNotificationConfigRequest
+        ),
+    ) -> tuple[str, str]:
+        """Parses the task ID and push notification config ID from the request.
+
+        Args:
+            request: The request to parse.
+
+        Returns:
+            A tuple containing the task ID and push notification config ID.
+
+        Raises:
+            ServerError: If the request name is invalid.
+        """
+        m = _TASK_PUSH_CONFIG_NAME_MATCH.match(request.name)
+        if not m:
+            raise ServerError(
+                error=types.InvalidParamsError(
+                    message=f'No task or config id for {request.name}'
+                )
+            )
+        return (
+            m.group(1),
+            m.group(2),
+        )
+
     @classmethod
     def agent_card(
         cls,

tests/utils/test_proto_utils.py

@@ -244,6 +244,62 @@ def test_task_push_config_from_proto_invalid_parent(self):
             proto_utils.FromProto.task_push_notification_config(request)
         assert isinstance(exc_info.value.error, types.InvalidParamsError)
 
+    @pytest.mark.parametrize(
+        'request_type, name, expected_task_id, expected_config_id',
+        [
+            (
+                a2a_pb2.GetTaskPushNotificationConfigRequest,
+                'tasks/task-123/pushNotificationConfigs/config-456',
+                'task-123',
+                'config-456',
+            ),
+            (
+                a2a_pb2.DeleteTaskPushNotificationConfigRequest,
+                'tasks/task-abc/pushNotificationConfigs/config-def',
+                'task-abc',
+                'config-def',
+            ),
+        ],
+    )
+    def test_task_push_notification_config_params_valid(
+        self, request_type, name, expected_task_id, expected_config_id
+    ):
+        """Test valid name in task_push_notification_config_params."""
+        request = request_type(name=name)
+        task_id, config_id = (
+            proto_utils.ToProto.task_push_notification_config_params(request)
+        )
+        assert task_id == expected_task_id
+        assert config_id == expected_config_id
+
+    @pytest.mark.parametrize(
+        'request_type',
+        [
+            a2a_pb2.GetTaskPushNotificationConfigRequest,
+            a2a_pb2.DeleteTaskPushNotificationConfigRequest,
+        ],
+    )
+    @pytest.mark.parametrize(
+        'name',
+        [
+            'invalid-name-format',
+            'tasks/task-123',
+            'tasks/task-123/pushNotificationConfigs',
+            'tasks//pushNotificationConfigs/config-456',
+            'tasks/task-123/pushNotificationConfigs/',
+            'foo/task-123/bar/config-456',
+        ],
+    )
+    def test_task_push_notification_config_params_invalid(
+        self, request_type, name
+    ):
+        """Test invalid names in task_push_notification_config_params."""
+        request = request_type(name=name)
+        with pytest.raises(ServerError) as exc_info:
+            proto_utils.ToProto.task_push_notification_config_params(request)
+        assert isinstance(exc_info.value.error, types.InvalidParamsError)
+        assert 'No task or config id for' in exc_info.value.error.message
+
     def test_none_handling(self):
         """Test that None inputs are handled gracefully."""
         assert proto_utils.ToProto.message(None) is None