lib: graph API: remove "listener removed" callback parameters

[babeltrace.git] / src / bindings / python / bt2 / bt2 / graph.py

diff --git a/src/bindings/python/bt2/bt2/graph.py b/src/bindings/python/bt2/bt2/graph.py
index 79be1ca80905a94c8aab0de01044c96b41bf287f..a3926e5951ff14df902f47c5b5203281bad27cbd 100644 (file)
--- a/src/bindings/python/bt2/bt2/graph.py
+++ b/src/bindings/python/bt2/bt2/graph.py
@@ -40,32 +40,6 @@ def _graph_port_added_listener_from_native(
     user_listener(component, port)
 
 
-def _graph_ports_connected_listener_from_native(
-    user_listener,
-    upstream_component_ptr,
-    upstream_component_type,
-    upstream_port_ptr,
-    downstream_component_ptr,
-    downstream_component_type,
-    downstream_port_ptr,
-):
-    upstream_component = bt2_component._create_component_from_const_ptr_and_get_ref(
-        upstream_component_ptr, upstream_component_type
-    )
-    upstream_port = bt2_port._create_from_const_ptr_and_get_ref(
-        upstream_port_ptr, native_bt.PORT_TYPE_OUTPUT
-    )
-    downstream_component = bt2_component._create_component_from_const_ptr_and_get_ref(
-        downstream_component_ptr, downstream_component_type
-    )
-    downstream_port = bt2_port._create_from_const_ptr_and_get_ref(
-        downstream_port_ptr, native_bt.PORT_TYPE_INPUT
-    )
-    user_listener(
-        upstream_component, upstream_port, downstream_component, downstream_port
-    )
-
-
 class Graph(object._SharedObject):
     _get_ref = staticmethod(native_bt.graph_get_ref)
     _put_ref = staticmethod(native_bt.graph_put_ref)
@@ -83,6 +57,10 @@ class Graph(object._SharedObject):
 
         super().__init__(ptr)
 
+        # list of listener partials to keep a reference as long as
+        # this graph exists
+        self._listener_partials = []
+
     def add_component(
         self,
         component_class,
@@ -166,18 +144,8 @@ class Graph(object._SharedObject):
         if listener_ids is None:
             raise bt2._Error('cannot add listener to graph object')
 
-    def add_ports_connected_listener(self, listener):
-        if not callable(listener):
-            raise TypeError("'listener' parameter is not callable")
-
-        fn = native_bt.bt2_graph_add_ports_connected_listener
-        listener_from_native = functools.partial(
-            _graph_ports_connected_listener_from_native, listener
-        )
-
-        listener_ids = fn(self._ptr, listener_from_native)
-        if listener_ids is None:
-            raise bt2._Error('cannot add listener to graph object')
+        # keep the partial's reference
+        self._listener_partials.append(listener_from_native)
 
     def run_once(self):
         status = native_bt.graph_run_once(self._ptr)