lib: graph: add "self" and some "private" APIs
[babeltrace.git] / lib / graph / graph.c
index 722cb2ee28a73fc525e90e92253a51b969edf964..1b4653de735b60c0f9f5e6625261c6214f59ad33 100644 (file)
 #include <babeltrace/values.h>
 #include <babeltrace/private-values.h>
 #include <babeltrace/values-internal.h>
+#include <babeltrace/object.h>
 #include <babeltrace/assert-internal.h>
 #include <babeltrace/assert-pre-internal.h>
 #include <unistd.h>
 #include <glib.h>
 
+typedef void (*port_added_func_t)(void *, void *, void *);
+typedef void (*port_removed_func_t)(void *, void *, void *);
+typedef void (*ports_connected_func_t)(void *, void *, void *, void *, void *);
+typedef void (*ports_disconnected_func_t)(void *, void *, void *, void *, void *);
+typedef enum bt_self_component_status (*comp_init_method_t)(void *, void *, void *);
+
 struct bt_graph_listener {
-       void *func;
        bt_private_graph_listener_removed removed;
        void *data;
 };
 
-static
-int init_listeners_array(GArray **listeners)
-{
-       int ret = 0;
-
-       BT_ASSERT(listeners);
-       *listeners = g_array_new(FALSE, TRUE, sizeof(struct bt_graph_listener));
-       if (!*listeners) {
-               BT_LOGE_STR("Failed to allocate one GArray.");
-               ret = -1;
-               goto end;
-       }
+struct bt_graph_listener_port_added {
+       struct bt_graph_listener base;
+       port_added_func_t func;
+};
 
-end:
-       return ret;
-}
+struct bt_graph_listener_port_removed {
+       struct bt_graph_listener base;
+       port_removed_func_t func;
+};
 
-static
-void call_remove_listeners(GArray *listeners)
-{
-       size_t i;
+struct bt_graph_listener_ports_connected {
+       struct bt_graph_listener base;
+       ports_connected_func_t func;
+};
 
-       for (i = 0; i < listeners->len; i++) {
-               struct bt_graph_listener listener =
-                       g_array_index(listeners, struct bt_graph_listener, i);
+struct bt_graph_listener_ports_disconnected {
+       struct bt_graph_listener base;
+       ports_disconnected_func_t func;
+};
 
-               if (listener.removed) {
-                       listener.removed(listener.data);
-               }
-       }
-}
+#define INIT_LISTENERS_ARRAY(_type, _listeners)                                \
+       do {                                                            \
+               _listeners = g_array_new(FALSE, TRUE, sizeof(_type));   \
+               if (!(_listeners)) {                                    \
+                       BT_LOGE_STR("Failed to allocate one GArray.");  \
+               }                                                       \
+       } while (0)
+
+#define CALL_REMOVE_LISTENERS(_type, _listeners)                       \
+       do {                                                            \
+               size_t i;                                               \
+                                                                       \
+               for (i = 0; i < (_listeners)->len; i++) {               \
+                       _type *listener =                               \
+                               &g_array_index((_listeners), _type, i); \
+                                                                       \
+                       if (listener->base.removed) {                   \
+                               listener->base.removed(listener->base.data); \
+                       }                                               \
+               }                                                       \
+       } while (0)
 
 static
-void bt_graph_destroy(struct bt_object *obj)
+void destroy_graph(struct bt_object *obj)
 {
        struct bt_graph *graph = container_of(obj,
                        struct bt_graph, base);
@@ -116,7 +132,7 @@ void bt_graph_destroy(struct bt_object *obj)
         * step 4 goes from 1 to 2, and from 2 to 1 at step 6. This
         * ensures that this function is not called two times.
         */
-       BT_LOGD("Destroying graph: addr=%p", graph);
+       BT_LIB_LOGD("Destroying graph: %!+g", graph);
        obj->ref_count++;
 
        /*
@@ -126,43 +142,131 @@ void bt_graph_destroy(struct bt_object *obj)
        (void) bt_private_graph_cancel((void *) graph);
 
        /* Call all remove listeners */
-       call_remove_listeners(graph->listeners.port_added);
-       call_remove_listeners(graph->listeners.port_removed);
-       call_remove_listeners(graph->listeners.ports_connected);
-       call_remove_listeners(graph->listeners.ports_disconnected);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added,
+               graph->listeners.source_output_port_added);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added,
+               graph->listeners.filter_output_port_added);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added,
+               graph->listeners.filter_input_port_added);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added,
+               graph->listeners.sink_input_port_added);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed,
+               graph->listeners.source_output_port_removed);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed,
+               graph->listeners.filter_output_port_removed);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed,
+               graph->listeners.filter_input_port_removed);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed,
+               graph->listeners.sink_input_port_removed);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected,
+               graph->listeners.source_filter_ports_connected);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected,
+               graph->listeners.source_sink_ports_connected);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected,
+               graph->listeners.filter_sink_ports_connected);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_disconnected,
+               graph->listeners.source_filter_ports_disconnected);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_disconnected,
+               graph->listeners.source_sink_ports_disconnected);
+       CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_disconnected,
+               graph->listeners.filter_sink_ports_disconnected);
 
        if (graph->notifications) {
                g_ptr_array_free(graph->notifications, TRUE);
+               graph->notifications = NULL;
        }
 
        if (graph->connections) {
                BT_LOGD_STR("Destroying connections.");
                g_ptr_array_free(graph->connections, TRUE);
+               graph->connections = NULL;
        }
 
        if (graph->components) {
                BT_LOGD_STR("Destroying components.");
                g_ptr_array_free(graph->components, TRUE);
+               graph->components = NULL;
        }
 
        if (graph->sinks_to_consume) {
                g_queue_free(graph->sinks_to_consume);
+               graph->sinks_to_consume = NULL;
+       }
+
+       if (graph->listeners.source_output_port_added) {
+               g_array_free(graph->listeners.source_output_port_added, TRUE);
+               graph->listeners.source_output_port_added = NULL;
+       }
+
+       if (graph->listeners.filter_output_port_added) {
+               g_array_free(graph->listeners.filter_output_port_added, TRUE);
+               graph->listeners.filter_output_port_added = NULL;
+       }
+
+       if (graph->listeners.filter_input_port_added) {
+               g_array_free(graph->listeners.filter_input_port_added, TRUE);
+               graph->listeners.filter_input_port_added = NULL;
        }
 
-       if (graph->listeners.port_added) {
-               g_array_free(graph->listeners.port_added, TRUE);
+       if (graph->listeners.sink_input_port_added) {
+               g_array_free(graph->listeners.sink_input_port_added, TRUE);
+               graph->listeners.sink_input_port_added = NULL;
        }
 
-       if (graph->listeners.port_removed) {
-               g_array_free(graph->listeners.port_removed, TRUE);
+       if (graph->listeners.source_output_port_removed) {
+               g_array_free(graph->listeners.source_output_port_removed, TRUE);
+               graph->listeners.source_output_port_removed = NULL;
        }
 
-       if (graph->listeners.ports_connected) {
-               g_array_free(graph->listeners.ports_connected, TRUE);
+       if (graph->listeners.filter_output_port_removed) {
+               g_array_free(graph->listeners.filter_output_port_removed, TRUE);
+               graph->listeners.filter_output_port_removed = NULL;
        }
 
-       if (graph->listeners.ports_disconnected) {
-               g_array_free(graph->listeners.ports_disconnected, TRUE);
+       if (graph->listeners.filter_input_port_removed) {
+               g_array_free(graph->listeners.filter_input_port_removed, TRUE);
+               graph->listeners.filter_input_port_removed = NULL;
+       }
+
+       if (graph->listeners.sink_input_port_removed) {
+               g_array_free(graph->listeners.sink_input_port_removed, TRUE);
+               graph->listeners.sink_input_port_removed = NULL;
+       }
+
+       if (graph->listeners.source_filter_ports_connected) {
+               g_array_free(graph->listeners.source_filter_ports_connected,
+                       TRUE);
+               graph->listeners.source_filter_ports_connected = NULL;
+       }
+
+       if (graph->listeners.source_sink_ports_connected) {
+               g_array_free(graph->listeners.source_sink_ports_connected,
+                       TRUE);
+               graph->listeners.source_sink_ports_connected = NULL;
+       }
+
+       if (graph->listeners.filter_sink_ports_connected) {
+               g_array_free(graph->listeners.filter_sink_ports_connected,
+                       TRUE);
+               graph->listeners.filter_sink_ports_connected = NULL;
+       }
+
+       if (graph->listeners.source_filter_ports_disconnected) {
+               g_array_free(graph->listeners.source_filter_ports_disconnected,
+                       TRUE);
+               graph->listeners.source_filter_ports_disconnected = NULL;
+       }
+
+       if (graph->listeners.source_sink_ports_disconnected) {
+               g_array_free(graph->listeners.source_sink_ports_disconnected,
+                       TRUE);
+               graph->listeners.source_sink_ports_disconnected = NULL;
+       }
+
+       if (graph->listeners.filter_sink_ports_disconnected) {
+               g_array_free(graph->listeners.filter_sink_ports_disconnected,
+                       TRUE);
+               graph->listeners.filter_sink_ports_disconnected = NULL;
        }
 
        bt_object_pool_finalize(&graph->event_notif_pool);
@@ -210,7 +314,7 @@ struct bt_private_graph *bt_private_graph_create(void)
                goto end;
        }
 
-       bt_object_init_shared(&graph->base, bt_graph_destroy);
+       bt_object_init_shared(&graph->base, destroy_graph);
        graph->connections = g_ptr_array_new_with_free_func(
                (GDestroyNotify) bt_object_try_spec_release);
        if (!graph->connections) {
@@ -229,28 +333,116 @@ struct bt_private_graph *bt_private_graph_create(void)
                goto error;
        }
 
-       bt_graph_set_can_consume(graph, BT_TRUE);
-       ret = init_listeners_array(&graph->listeners.port_added);
-       if (ret) {
-               BT_LOGE_STR("Cannot create the \"port added\" listener array.");
+       bt_graph_set_can_consume(graph, true);
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added,
+               graph->listeners.source_output_port_added);
+
+       if (!graph->listeners.source_output_port_added) {
+               ret = -1;
                goto error;
        }
 
-       ret = init_listeners_array(&graph->listeners.port_removed);
-       if (ret) {
-               BT_LOGE_STR("Cannot create the \"port removed\" listener array.");
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added,
+               graph->listeners.filter_output_port_added);
+
+       if (!graph->listeners.filter_output_port_added) {
+               ret = -1;
                goto error;
        }
 
-       ret = init_listeners_array(&graph->listeners.ports_connected);
-       if (ret) {
-               BT_LOGE_STR("Cannot create the \"port connected\" listener array.");
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added,
+               graph->listeners.filter_input_port_added);
+
+       if (!graph->listeners.filter_input_port_added) {
+               ret = -1;
                goto error;
        }
 
-       ret = init_listeners_array(&graph->listeners.ports_disconnected);
-       if (ret) {
-               BT_LOGE_STR("Cannot create the \"port disconneted\" listener array.");
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added,
+               graph->listeners.sink_input_port_added);
+
+       if (!graph->listeners.sink_input_port_added) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed,
+               graph->listeners.source_output_port_removed);
+
+       if (!graph->listeners.source_output_port_removed) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed,
+               graph->listeners.filter_output_port_removed);
+
+       if (!graph->listeners.filter_output_port_removed) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed,
+               graph->listeners.filter_input_port_removed);
+
+       if (!graph->listeners.filter_input_port_removed) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed,
+               graph->listeners.sink_input_port_removed);
+
+       if (!graph->listeners.sink_input_port_removed) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected,
+               graph->listeners.source_filter_ports_connected);
+
+       if (!graph->listeners.source_filter_ports_connected) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected,
+               graph->listeners.source_sink_ports_connected);
+
+       if (!graph->listeners.source_sink_ports_connected) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected,
+               graph->listeners.filter_sink_ports_connected);
+
+       if (!graph->listeners.filter_sink_ports_connected) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_disconnected,
+               graph->listeners.source_filter_ports_disconnected);
+
+       if (!graph->listeners.source_filter_ports_disconnected) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_disconnected,
+               graph->listeners.source_sink_ports_disconnected);
+
+       if (!graph->listeners.source_sink_ports_disconnected) {
+               ret = -1;
+               goto error;
+       }
+
+       INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_disconnected,
+               graph->listeners.filter_sink_ports_disconnected);
+
+       if (!graph->listeners.filter_sink_ports_disconnected) {
+               ret = -1;
                goto error;
        }
 
@@ -286,10 +478,11 @@ struct bt_private_graph *bt_private_graph_create(void)
 
        graph->notifications = g_ptr_array_new_with_free_func(
                (GDestroyNotify) notify_notification_graph_is_destroyed);
-       BT_LOGD("Created graph object: addr=%p", graph);
+       BT_LIB_LOGD("Created graph object: %!+g", graph);
 
 end:
        return (void *) graph;
+
 error:
        BT_OBJECT_PUT_REF_AND_RESET(graph);
        goto end;
@@ -297,149 +490,93 @@ error:
 
 enum bt_graph_status bt_private_graph_connect_ports(
                struct bt_private_graph *priv_graph,
-               struct bt_port *upstream_port, struct bt_port *downstream_port,
+               struct bt_port_output *upstream_port_out,
+               struct bt_port_input *downstream_port_in,
                struct bt_connection **user_connection)
 {
        struct bt_graph *graph = (void *) priv_graph;
        enum bt_graph_status status = BT_GRAPH_STATUS_OK;
        struct bt_connection *connection = NULL;
-       struct bt_graph *upstream_graph = NULL;
-       struct bt_graph *downstream_graph = NULL;
+       struct bt_port *upstream_port = (void *) upstream_port_out;
+       struct bt_port *downstream_port = (void *) downstream_port_in;
        struct bt_component *upstream_component = NULL;
        struct bt_component *downstream_component = NULL;
-       enum bt_component_status component_status;
-       bt_bool init_can_consume;
+       enum bt_self_component_status component_status;
+       bool init_can_consume;
 
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(upstream_port, "Upstream port");
+       BT_ASSERT_PRE_NON_NULL(downstream_port, "Downstream port port");
+       BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph);
+       BT_ASSERT_PRE(!bt_port_is_connected(upstream_port),
+               "Upstream port is already connected: %!+p", upstream_port);
+       BT_ASSERT_PRE(!bt_port_is_connected(downstream_port),
+               "Downstream port is already connected: %!+p", downstream_port);
+       BT_ASSERT_PRE(bt_port_borrow_component((void *) upstream_port),
+               "Upstream port does not belong to a component: %!+p",
+               upstream_port);
+       BT_ASSERT_PRE(bt_port_borrow_component((void *) downstream_port),
+               "Downstream port does not belong to a component: %!+p",
+               downstream_port);
        init_can_consume = graph->can_consume;
-
-       if (!upstream_port) {
-               BT_LOGW_STR("Invalid parameter: upstream port is NULL.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       if (!downstream_port) {
-               BT_LOGW_STR("Invalid parameter: downstream port is NULL.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       BT_LOGD("Connecting component ports within graph: "
-               "graph-addr=%p, "
-               "upstream-port-addr=%p, upstream-port-name=\"%s\", "
-               "downstream-port-addr=%p, downstream-port-name=\"%s\"",
-               graph, upstream_port, bt_port_get_name(upstream_port),
-               downstream_port, bt_port_get_name(downstream_port));
-
-       if (graph->canceled) {
-               BT_LOGW_STR("Invalid parameter: graph is canceled.");
-               status = BT_GRAPH_STATUS_CANCELED;
-               goto end;
-       }
-
-       bt_graph_set_can_consume(graph, BT_FALSE);
-
-       /* Ensure appropriate types for upstream and downstream ports. */
-       if (bt_port_get_type(upstream_port) != BT_PORT_TYPE_OUTPUT) {
-               BT_LOGW_STR("Invalid parameter: upstream port is not an output port.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-       if (bt_port_get_type(downstream_port) != BT_PORT_TYPE_INPUT) {
-               BT_LOGW_STR("Invalid parameter: downstream port is not an input port.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       /* Ensure that both ports are currently unconnected. */
-       if (bt_port_is_connected(upstream_port)) {
-               BT_LOGW_STR("Invalid parameter: upstream port is already connected.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       if (bt_port_is_connected(downstream_port)) {
-               BT_LOGW_STR("Invalid parameter: downstream port is already connected.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       /*
-        * Ensure that both ports are still attached to their creating
-        * component.
-        */
-       upstream_component = bt_port_get_component(upstream_port);
-       if (!upstream_component) {
-               BT_LOGW_STR("Invalid parameter: upstream port is loose (does not belong to a component)");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       downstream_component = bt_port_get_component(downstream_port);
-       if (!downstream_component) {
-               BT_LOGW_STR("Invalid parameter: downstream port is loose (does not belong to a component)");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       BT_LOGD("Connecting component ports: "
-               "upstream-comp-addr=%p, upstream-comp-name=\"%s\", "
-               "downstream-comp-addr=%p, downstream-comp-name=\"%s\"",
-               upstream_component, bt_component_get_name(upstream_component),
-               downstream_component, bt_component_get_name(downstream_component));
+       BT_LIB_LOGD("Connecting component ports within graph: "
+               "%![graph-]+g, %![up-port-]+p, %![down-port-]+p",
+               graph, upstream_port, downstream_port);
+       bt_graph_set_can_consume(graph, false);
+       upstream_component = bt_port_borrow_component(
+               (void *) upstream_port);
+       downstream_component = bt_port_borrow_component(
+               (void *) downstream_port);
 
        /*
         * At this point the ports are not connected yet. Both
         * components need to accept an eventual connection to their
         * port by the other port before we continue.
         */
-       BT_LOGD_STR("Asking upstream component to accept the connection.");
+       BT_LIB_LOGD("Asking upstream component to accept the connection: "
+               "%![comp-]+c", upstream_component);
        component_status = bt_component_accept_port_connection(
-               upstream_component, upstream_port, downstream_port);
-       if (component_status != BT_COMPONENT_STATUS_OK) {
-               if (component_status == BT_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) {
+               upstream_component, (void *) upstream_port,
+               (void *) downstream_port);
+       if (component_status != BT_SELF_COMPONENT_STATUS_OK) {
+               if (component_status == BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) {
                        BT_LOGD_STR("Upstream component refused the connection.");
                } else {
                        BT_LOGW("Cannot ask upstream component to accept the connection: "
-                               "status=%s", bt_component_status_string(component_status));
+                               "status=%s", bt_self_component_status_string(component_status));
                }
 
-               status = bt_graph_status_from_component_status(
-                       component_status);
+               status = (int) component_status;
                goto end;
        }
 
-       BT_LOGD_STR("Asking downstream component to accept the connection.");
+       BT_LIB_LOGD("Asking downstream component to accept the connection: "
+               "%![comp-]+c", downstream_component);
        component_status = bt_component_accept_port_connection(
-               downstream_component, downstream_port, upstream_port);
-       if (component_status != BT_COMPONENT_STATUS_OK) {
-               if (component_status == BT_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) {
+               downstream_component, (void *) downstream_port,
+               (void *) upstream_port);
+       if (component_status != BT_SELF_COMPONENT_STATUS_OK) {
+               if (component_status == BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) {
                        BT_LOGD_STR("Downstream component refused the connection.");
                } else {
                        BT_LOGW("Cannot ask downstream component to accept the connection: "
-                               "status=%s", bt_component_status_string(component_status));
+                               "status=%s", bt_self_component_status_string(component_status));
                }
 
-               status = bt_graph_status_from_component_status(
-                       component_status);
+               status = (int) component_status;
                goto end;
        }
 
        BT_LOGD_STR("Creating connection.");
-       connection = bt_connection_create(graph, upstream_port,
-                       downstream_port);
+       connection = bt_connection_create(graph, (void *) upstream_port,
+               (void *) downstream_port);
        if (!connection) {
                BT_LOGW("Cannot create connection object.");
                status = BT_GRAPH_STATUS_NOMEM;
                goto end;
        }
 
-       BT_LOGD("Connection object created: conn-addr=%p", connection);
+       BT_LIB_LOGD("Connection object created: %!+x", connection);
 
        /*
         * Ownership of upstream_component/downstream_component and of
@@ -450,46 +587,37 @@ enum bt_graph_status bt_private_graph_connect_ports(
        /*
         * Notify both components that their port is connected.
         */
-       BT_LOGD_STR("Notifying upstream component that its port is connected.");
+       BT_LIB_LOGD("Notifying upstream component that its port is connected: "
+               "%![comp-]+c, %![port-]+p", upstream_component, upstream_port);
        component_status = bt_component_port_connected(upstream_component,
-               upstream_port, downstream_port);
-       if (component_status != BT_COMPONENT_STATUS_OK) {
-               BT_LOGW("Error while notifying upstream component that its port is connected: "
-                       "status=%s, graph-addr=%p, "
-                       "upstream-comp-addr=%p, upstream-comp-name=\"%s\", "
-                       "downstream-comp-addr=%p, downstream-comp-name=\"%s\", "
-                       "upstream-port-addr=%p, upstream-port-name=\"%s\", "
-                       "downstream-port-addr=%p, downstream-port-name=\"%s\"",
-                       bt_component_status_string(component_status), graph,
-                       upstream_component, bt_component_get_name(upstream_component),
-                       downstream_component, bt_component_get_name(downstream_component),
-                       upstream_port, bt_port_get_name(upstream_port),
-                       downstream_port, bt_port_get_name(downstream_port));
+               (void *) upstream_port, (void *) downstream_port);
+       if (component_status != BT_SELF_COMPONENT_STATUS_OK) {
+               BT_LIB_LOGW("Error while notifying upstream component that its port is connected: "
+                       "status=%s, %![graph-]+g, %![up-comp-]+c, "
+                       "%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p",
+                       bt_self_component_status_string(component_status),
+                       graph, upstream_component, downstream_component,
+                       upstream_port, downstream_port);
                bt_connection_end(connection, true);
-               status = bt_graph_status_from_component_status(
-                       component_status);
+               status = (int) component_status;
                goto end;
        }
 
        connection->notified_upstream_port_connected = true;
-       BT_LOGD_STR("Notifying downstream component that its port is connected.");
+       BT_LIB_LOGD("Notifying downstream component that its port is connected: "
+               "%![comp-]+c, %![port-]+p", downstream_component,
+               downstream_port);
        component_status = bt_component_port_connected(downstream_component,
-               downstream_port, upstream_port);
-       if (component_status != BT_COMPONENT_STATUS_OK) {
-               BT_LOGW("Error while notifying downstream component that its port is connected: "
-                       "status=%s, graph-addr=%p, "
-                       "upstream-comp-addr=%p, upstream-comp-name=\"%s\", "
-                       "downstream-comp-addr=%p, downstream-comp-name=\"%s\", "
-                       "upstream-port-addr=%p, upstream-port-name=\"%s\", "
-                       "downstream-port-addr=%p, downstream-port-name=\"%s\"",
-                       bt_component_status_string(component_status), graph,
-                       upstream_component, bt_component_get_name(upstream_component),
-                       downstream_component, bt_component_get_name(downstream_component),
-                       upstream_port, bt_port_get_name(upstream_port),
-                       downstream_port, bt_port_get_name(downstream_port));
+               (void *) downstream_port, (void *) upstream_port);
+       if (component_status != BT_SELF_COMPONENT_STATUS_OK) {
+               BT_LIB_LOGW("Error while notifying downstream component that its port is connected: "
+                       "status=%s, %![graph-]+g, %![up-comp-]+c, "
+                       "%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p",
+                       bt_self_component_status_string(component_status),
+                       graph, upstream_component, downstream_component,
+                       upstream_port, downstream_port);
                bt_connection_end(connection, true);
-               status = bt_graph_status_from_component_status(
-                       component_status);
+               status = (int) component_status;
                goto end;
        }
 
@@ -501,17 +629,11 @@ enum bt_graph_status bt_private_graph_connect_ports(
        BT_LOGD_STR("Notifying graph's user that new component ports are connected.");
        bt_graph_notify_ports_connected(graph, upstream_port, downstream_port);
        connection->notified_graph_ports_connected = true;
-       BT_LOGD("Connected component ports within graph: "
-               "graph-addr=%p, "
-               "upstream-comp-addr=%p, upstream-comp-name=\"%s\", "
-               "downstream-comp-addr=%p, downstream-comp-name=\"%s\", "
-               "upstream-port-addr=%p, upstream-port-name=\"%s\", "
-               "downstream-port-addr=%p, downstream-port-name=\"%s\"",
-               graph,
-               upstream_component, bt_component_get_name(upstream_component),
-               downstream_component, bt_component_get_name(downstream_component),
-               upstream_port, bt_port_get_name(upstream_port),
-               downstream_port, bt_port_get_name(downstream_port));
+       BT_LIB_LOGD("Connected component ports within graph: "
+               "%![graph-]+g, %![up-comp-]+c, %![down-comp-]+c, "
+               "%![up-port-]+p, %![down-port-]+p",
+               graph, upstream_component, downstream_component,
+               upstream_port, downstream_port);
 
        if (user_connection) {
                /* Move reference to user */
@@ -520,36 +642,42 @@ enum bt_graph_status bt_private_graph_connect_ports(
        }
 
 end:
-       bt_object_put_ref(upstream_graph);
-       bt_object_put_ref(downstream_graph);
-       bt_object_put_ref(upstream_component);
-       bt_object_put_ref(downstream_component);
        bt_object_put_ref(connection);
-       if (graph) {
-               (void) init_can_consume;
-               bt_graph_set_can_consume(graph, init_can_consume);
-       }
+       (void) init_can_consume;
+       bt_graph_set_can_consume(graph, init_can_consume);
        return status;
 }
 
 static inline
-enum bt_graph_status consume_graph_sink(struct bt_component *sink)
+enum bt_graph_status consume_graph_sink(struct bt_component_sink *comp)
 {
-       enum bt_component_status comp_status;
-
-       BT_ASSERT(sink);
-       comp_status = bt_component_sink_consume(sink);
-       BT_LOGV("Consumed from sink: addr=%p, name=\"%s\", status=%s",
-               sink, bt_component_get_name(sink),
-               bt_component_status_string(comp_status));
-       BT_ASSERT_PRE(comp_status == BT_COMPONENT_STATUS_OK ||
-               comp_status == BT_COMPONENT_STATUS_END ||
-               comp_status == BT_COMPONENT_STATUS_AGAIN ||
-               comp_status == BT_COMPONENT_STATUS_ERROR ||
-               comp_status == BT_COMPONENT_STATUS_NOMEM,
-               "Invalid component status returned by consuming function: "
-               "status=%s", bt_component_status_string(comp_status));
-       return (enum bt_graph_status) comp_status;
+       enum bt_self_component_status comp_status;
+       struct bt_component_class_sink *sink_class = NULL;
+
+       BT_ASSERT(comp);
+       sink_class = (void *) comp->parent.class;
+       BT_ASSERT(sink_class->methods.consume);
+       BT_LIB_LOGD("Calling user's consume method: %!+c", comp);
+       comp_status = sink_class->methods.consume((void *) comp);
+       BT_LOGD("User method returned: status=%s",
+               bt_self_component_status_string(comp_status));
+       BT_ASSERT_PRE(comp_status == BT_SELF_COMPONENT_STATUS_OK ||
+               comp_status == BT_SELF_COMPONENT_STATUS_END ||
+               comp_status == BT_SELF_COMPONENT_STATUS_AGAIN ||
+               comp_status == BT_SELF_COMPONENT_STATUS_ERROR ||
+               comp_status == BT_SELF_COMPONENT_STATUS_NOMEM,
+               "Invalid component status returned by consuming method: "
+               "status=%s", bt_self_component_status_string(comp_status));
+       if (comp_status < 0) {
+               BT_LOGW_STR("Consume method failed.");
+               goto end;
+       }
+
+       BT_LIB_LOGV("Consumed from sink: %![comp-]+c, status=%s",
+               comp, bt_self_component_status_string(comp_status));
+
+end:
+       return (int) comp_status;
 }
 
 /*
@@ -558,11 +686,10 @@ enum bt_graph_status consume_graph_sink(struct bt_component *sink)
  * still something to consume afterwards.
  */
 static inline
-enum bt_graph_status consume_sink_node(struct bt_graph *graph,
-               GList *node)
+enum bt_graph_status consume_sink_node(struct bt_graph *graph, GList *node)
 {
        enum bt_graph_status status;
-       struct bt_component *sink;
+       struct bt_component_sink *sink;
 
        sink = node->data;
        status = consume_graph_sink(sink);
@@ -581,23 +708,21 @@ enum bt_graph_status consume_sink_node(struct bt_graph *graph,
        }
 
 end:
-       BT_LOGV("Consumed sink node: status=%s", bt_graph_status_string(status));
+       BT_LIB_LOGV("Consumed sink node: %![comp-]+c, status=%s",
+               sink, bt_graph_status_string(status));
        return status;
 }
 
 BT_HIDDEN
 enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph,
-               struct bt_component *sink)
+               struct bt_component_sink *sink)
 {
        enum bt_graph_status status;
        GList *sink_node;
        int index;
 
-       BT_LOGV("Making specific sink consume: addr=%p, "
-               "comp-addr=%p, comp-name=\"%s\"",
-               graph, sink, bt_component_get_name(sink));
-
-       BT_ASSERT(bt_component_borrow_graph(sink) == graph);
+       BT_LIB_LOGV("Making specific sink consume: %![comp-]+c", sink);
+       BT_ASSERT(bt_component_borrow_graph((void *) sink) == graph);
 
        if (g_queue_is_empty(graph->sinks_to_consume)) {
                BT_LOGV_STR("Graph's sink queue is empty: end of graph.");
@@ -621,15 +746,15 @@ end:
 }
 
 static inline
-enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph)
+enum bt_graph_status consume_no_check(struct bt_graph *graph)
 {
        enum bt_graph_status status = BT_GRAPH_STATUS_OK;
        struct bt_component *sink;
        GList *current_node;
 
-       BT_LOGV("Making next sink consume: addr=%p", graph);
        BT_ASSERT_PRE(graph->has_sink,
                "Graph has no sink component: %!+g", graph);
+       BT_LIB_LOGV("Making next sink consume: %![graph-]+g", graph);
 
        if (unlikely(g_queue_is_empty(graph->sinks_to_consume))) {
                BT_LOGV_STR("Graph's sink queue is empty: end of graph.");
@@ -639,8 +764,7 @@ enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph)
 
        current_node = g_queue_pop_head_link(graph->sinks_to_consume);
        sink = current_node->data;
-       BT_LOGV("Chose next sink to consume: comp-addr=%p, comp-name=\"%s\"",
-               sink, bt_component_get_name(sink));
+       BT_LIB_LOGV("Chose next sink to consume: %!+c", sink);
        status = consume_sink_node(graph, current_node);
 
 end:
@@ -658,50 +782,38 @@ enum bt_graph_status bt_private_graph_consume(
        BT_ASSERT_PRE(graph->can_consume,
                "Cannot consume graph in its current state: %!+g", graph);
        bt_graph_set_can_consume(graph, BT_FALSE);
-       status = bt_graph_consume_no_check(graph);
+       status = consume_no_check(graph);
        bt_graph_set_can_consume(graph, BT_TRUE);
        return status;
 }
 
-enum bt_graph_status bt_private_graph_run(
-               struct bt_private_graph *priv_graph)
+enum bt_graph_status bt_private_graph_run(struct bt_private_graph *priv_graph)
 {
        struct bt_graph *graph = (void *) priv_graph;
        enum bt_graph_status status = BT_GRAPH_STATUS_OK;
 
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       if (graph->canceled) {
-               BT_LOGW("Invalid parameter: graph is canceled: "
-                       "graph-addr=%p", graph);
-               status = BT_GRAPH_STATUS_CANCELED;
-               goto end;
-       }
-
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph);
        BT_ASSERT_PRE(graph->can_consume,
                "Cannot consume graph in its current state: %!+g", graph);
        bt_graph_set_can_consume(graph, BT_FALSE);
-       BT_LOGV("Running graph: addr=%p", graph);
+       BT_LIB_LOGV("Running graph: %!+g", graph);
 
        do {
                /*
                 * Check if the graph is canceled at each iteration. If
                 * the graph was canceled by another thread or by a
-                * signal, this is not a warning nor an error, it was
-                * intentional: log with a DEBUG level only.
+                * signal handler, this is not a warning nor an error,
+                * it was intentional: log with a DEBUG level only.
                 */
                if (unlikely(graph->canceled)) {
-                       BT_LOGD("Stopping the graph: graph is canceled: "
-                               "graph-addr=%p", graph);
+                       BT_LIB_LOGD("Stopping the graph: graph is canceled: "
+                               "%!+g", graph);
                        status = BT_GRAPH_STATUS_CANCELED;
                        goto end;
                }
 
-               status = bt_graph_consume_no_check(graph);
+               status = consume_no_check(graph);
                if (unlikely(status == BT_GRAPH_STATUS_AGAIN)) {
                        /*
                         * If AGAIN is received and there are multiple
@@ -710,9 +822,9 @@ enum bt_graph_status bt_private_graph_run(
                         *
                         * However, in the case where a single sink is
                         * left, the caller can decide to busy-wait and
-                        * call bt_graph_run() continuously until the
-                        * source is ready or it can decide to sleep for
-                        * an arbitrary amount of time.
+                        * call bt_private_graph_run() continuously
+                        * until the source is ready or it can decide to
+                        * sleep for an arbitrary amount of time.
                         */
                        if (graph->sinks_to_consume->length > 1) {
                                status = BT_GRAPH_STATUS_OK;
@@ -727,191 +839,587 @@ enum bt_graph_status bt_private_graph_run(
        }
 
 end:
-       BT_LOGV("Graph ran: status=%s", bt_graph_status_string(status));
-       if (graph) {
-               bt_graph_set_can_consume(graph, BT_TRUE);
-       }
+       BT_LIB_LOGV("Graph ran: %![graph-]+g, status=%s", graph,
+               bt_graph_status_string(status));
+       bt_graph_set_can_consume(graph, BT_TRUE);
        return status;
 }
 
-static
-int add_listener(GArray *listeners, void *func, void *removed, void *data)
+enum bt_graph_status
+bt_private_graph_add_source_component_output_port_added_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_source_component_output_port_added_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
 {
-       struct bt_graph_listener listener = {
-               .func = func,
-               .removed = removed,
-               .data = data,
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_port_added listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_added_func_t) func,
        };
+       int listener_id;
 
-       g_array_append_val(listeners, listener);
-       return listeners->len - 1;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.source_output_port_added, listener);
+       listener_id = graph->listeners.source_output_port_added->len - 1;
+       BT_LIB_LOGV("Added \"source component output port added\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
 }
 
-int bt_private_graph_add_port_added_listener(
+enum bt_graph_status
+bt_private_graph_add_filter_component_output_port_added_listener(
                struct bt_private_graph *priv_graph,
-               bt_private_graph_port_added_listener listener,
-               bt_private_graph_listener_removed listener_removed, void *data)
+               bt_private_graph_filter_component_output_port_added_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
 {
        struct bt_graph *graph = (void *) priv_graph;
-       int ret;
+       struct bt_graph_listener_port_added listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_added_func_t) func,
+       };
+       int listener_id;
 
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.filter_output_port_added, listener);
+       listener_id = graph->listeners.filter_output_port_added->len - 1;
+       BT_LIB_LOGV("Added \"filter component output port added\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       if (graph->in_remove_listener) {
-               BT_LOGW("Cannot call this function during the execution of a remove listener: "
-                       "addr=%p", graph);
-               ret = -1;
-               goto end;
-       }
+enum bt_graph_status
+bt_private_graph_add_filter_component_input_port_added_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_filter_component_input_port_added_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_port_added listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_added_func_t) func,
+       };
+       int listener_id;
 
-       if (!listener) {
-               BT_LOGW_STR("Invalid parameter: listener is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.filter_input_port_added, listener);
+       listener_id = graph->listeners.filter_input_port_added->len - 1;
+       BT_LIB_LOGV("Added \"filter component input port added\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       ret = add_listener(graph->listeners.port_added, listener,
-               listener_removed, data);
-       BT_LOGV("Added \"port added\" listener to graph: "
-               "graph-addr=%p, listener-addr=%p, pos=%d",
-               graph, listener, ret);
+enum bt_graph_status
+bt_private_graph_add_sink_component_input_port_added_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_sink_component_input_port_added_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_port_added listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_added_func_t) func,
+       };
+       int listener_id;
 
-end:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.sink_input_port_added, listener);
+       listener_id = graph->listeners.sink_input_port_added->len - 1;
+       BT_LIB_LOGV("Added \"sink component input port added\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
 }
 
-int bt_private_graph_add_port_removed_listener(
+enum bt_graph_status
+bt_private_graph_add_source_component_output_port_removed_listener(
                struct bt_private_graph *priv_graph,
-               bt_private_graph_port_removed_listener listener,
-               bt_private_graph_listener_removed listener_removed, void *data)
+               bt_private_graph_source_component_output_port_removed_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
 {
        struct bt_graph *graph = (void *) priv_graph;
-       int ret;
+       struct bt_graph_listener_port_removed listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_removed_func_t) func,
+       };
+       int listener_id;
 
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.source_output_port_removed, listener);
+       listener_id = graph->listeners.source_output_port_removed->len - 1;
+       BT_LIB_LOGV("Added \"source component output port removed\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       if (graph->in_remove_listener) {
-               BT_LOGW("Cannot call this function during the execution of a remove listener: "
-                       "addr=%p", graph);
-               ret = -1;
-               goto end;
-       }
+enum bt_graph_status
+bt_private_graph_add_filter_component_output_port_removed_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_filter_component_output_port_removed_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_port_removed listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_removed_func_t) func,
+       };
+       int listener_id;
 
-       if (!listener) {
-               BT_LOGW_STR("Invalid parameter: listener is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.filter_output_port_removed, listener);
+       listener_id = graph->listeners.filter_output_port_removed->len - 1;
+       BT_LIB_LOGV("Added \"filter component output port removed\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       ret = add_listener(graph->listeners.port_removed, listener,
-               listener_removed, data);
-       BT_LOGV("Added \"port removed\" listener to graph: "
-               "graph-addr=%p, listener-addr=%p, pos=%d",
-               graph, listener, ret);
+enum bt_graph_status
+bt_private_graph_add_filter_component_input_port_removed_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_filter_component_input_port_removed_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_port_removed listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_removed_func_t) func,
+       };
+       int listener_id;
 
-end:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.filter_input_port_removed, listener);
+       listener_id = graph->listeners.filter_input_port_removed->len - 1;
+       BT_LIB_LOGV("Added \"filter component input port removed\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
 }
 
-int bt_private_graph_add_ports_connected_listener(
+enum bt_graph_status
+bt_private_graph_add_sink_component_input_port_removed_listener(
                struct bt_private_graph *priv_graph,
-               bt_private_graph_ports_connected_listener listener,
-               bt_private_graph_listener_removed listener_removed, void *data)
+               bt_private_graph_sink_component_input_port_removed_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
 {
        struct bt_graph *graph = (void *) priv_graph;
-       int ret;
+       struct bt_graph_listener_port_removed listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (port_removed_func_t) func,
+       };
+       int listener_id;
 
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.sink_input_port_removed, listener);
+       listener_id = graph->listeners.sink_input_port_removed->len - 1;
+       BT_LIB_LOGV("Added \"sink component input port removed\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       if (graph->in_remove_listener) {
-               BT_LOGW("Cannot call this function during the execution of a remove listener: "
-                       "addr=%p", graph);
-               ret = -1;
-               goto end;
-       }
+enum bt_graph_status
+bt_private_graph_add_source_filter_component_ports_connected_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_source_filter_component_ports_connected_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_ports_connected listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (ports_connected_func_t) func,
+       };
+       int listener_id;
 
-       if (!listener) {
-               BT_LOGW_STR("Invalid parameter: listener is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.source_filter_ports_connected,
+               listener);
+       listener_id = graph->listeners.source_filter_ports_connected->len - 1;
+       BT_LIB_LOGV("Added \"source to filter component ports connected\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       ret = add_listener(graph->listeners.ports_connected, listener,
-               listener_removed, data);
-       BT_LOGV("Added \"port connected\" listener to graph: "
-               "graph-addr=%p, listener-addr=%p, pos=%d",
-               graph, listener, ret);
+enum bt_graph_status
+bt_private_graph_add_source_sink_component_ports_connected_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_source_sink_component_ports_connected_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_ports_connected listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (ports_connected_func_t) func,
+       };
+       int listener_id;
 
-end:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.source_sink_ports_connected,
+               listener);
+       listener_id = graph->listeners.source_sink_ports_connected->len - 1;
+       BT_LIB_LOGV("Added \"source to sink component ports connected\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
 }
 
-int bt_private_graph_add_ports_disconnected_listener(
+enum bt_graph_status
+bt_private_graph_add_filter_sink_component_ports_connected_listener(
                struct bt_private_graph *priv_graph,
-               bt_private_graph_ports_disconnected_listener listener,
-               bt_private_graph_listener_removed listener_removed, void *data)
+               bt_private_graph_filter_sink_component_ports_connected_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
 {
        struct bt_graph *graph = (void *) priv_graph;
-       int ret;
+       struct bt_graph_listener_ports_connected listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (ports_connected_func_t) func,
+       };
+       int listener_id;
 
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.filter_sink_ports_connected,
+               listener);
+       listener_id = graph->listeners.filter_sink_ports_connected->len - 1;
+       BT_LIB_LOGV("Added \"filter to sink component ports connected\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       if (graph->in_remove_listener) {
-               BT_LOGW("Cannot call this function during the execution of a remove listener: "
-                       "addr=%p", graph);
-               ret = -1;
-               goto end;
-       }
+enum bt_graph_status
+bt_private_graph_add_source_filter_component_ports_disconnected_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_source_filter_component_ports_disconnected_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_ports_disconnected listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (ports_disconnected_func_t) func,
+       };
+       int listener_id;
 
-       if (!listener) {
-               BT_LOGW_STR("Invalid parameter: listener is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.source_filter_ports_disconnected,
+               listener);
+       listener_id = graph->listeners.source_filter_ports_disconnected->len - 1;
+       BT_LIB_LOGV("Added \"source to filter component ports disconnected\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
 
-       ret = add_listener(graph->listeners.ports_disconnected, listener,
-               listener_removed, data);
-       BT_LOGV("Added \"port disconnected\" listener to graph: "
-               "graph-addr=%p, listener-addr=%p, pos=%d",
-               graph, listener, ret);
+enum bt_graph_status
+bt_private_graph_add_source_sink_component_ports_disconnected_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_source_sink_component_ports_disconnected_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_ports_disconnected listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (ports_disconnected_func_t) func,
+       };
+       int listener_id;
 
-end:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.source_sink_ports_disconnected,
+               listener);
+       listener_id = graph->listeners.source_sink_ports_disconnected->len - 1;
+       BT_LIB_LOGV("Added \"source to sink component ports disconnected\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
+}
+
+enum bt_graph_status
+bt_private_graph_add_filter_sink_component_ports_disconnected_listener(
+               struct bt_private_graph *priv_graph,
+               bt_private_graph_filter_sink_component_ports_disconnected_listener func,
+               bt_private_graph_listener_removed listener_removed, void *data,
+               int *out_listener_id)
+{
+       struct bt_graph *graph = (void *) priv_graph;
+       struct bt_graph_listener_ports_disconnected listener = {
+               .base = {
+                       .removed = listener_removed,
+                       .data = data,
+               },
+               .func = (ports_disconnected_func_t) func,
+       };
+       int listener_id;
+
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(func, "Listener");
+       BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener");
+       BT_ASSERT_PRE(!graph->in_remove_listener,
+               "Graph currently executing a \"listener removed\" listener: "
+               "%!+g", graph);
+       g_array_append_val(graph->listeners.filter_sink_ports_disconnected,
+               listener);
+       listener_id = graph->listeners.filter_sink_ports_disconnected->len - 1;
+       BT_LIB_LOGV("Added \"filter to sink component ports disconnected\" listener to graph: "
+               "%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
+               listener_id);
+
+       if (listener_id) {
+               *out_listener_id = listener_id;
+       }
+
+       return BT_GRAPH_STATUS_OK;
 }
 
 BT_HIDDEN
 void bt_graph_notify_port_added(struct bt_graph *graph, struct bt_port *port)
 {
-       size_t i;
+       uint64_t i;
+       GArray *listeners;
+       struct bt_component *comp;
 
-       BT_LOGV("Notifying graph listeners that a port was added: "
-               "graph-addr=%p, port-addr=%p, port-name=\"%s\"",
-               graph, port, bt_port_get_name(port));
+       BT_ASSERT(graph);
+       BT_ASSERT(port);
+       BT_LIB_LOGV("Notifying graph listeners that a port was added: "
+               "%![graph-]+g, %![port-]+p", graph, port);
+       comp = bt_port_borrow_component(port);
+       BT_ASSERT(comp);
+
+       switch (comp->class->type) {
+       case BT_COMPONENT_CLASS_TYPE_SOURCE:
+       {
+               switch (port->type) {
+               case BT_PORT_TYPE_OUTPUT:
+                       listeners = graph->listeners.source_output_port_added;
+                       break;
+               default:
+                       abort();
+               }
+
+               break;
+       }
+       case BT_COMPONENT_CLASS_TYPE_FILTER:
+       {
+               switch (port->type) {
+               case BT_PORT_TYPE_INPUT:
+                       listeners = graph->listeners.filter_input_port_added;
+                       break;
+               case BT_PORT_TYPE_OUTPUT:
+                       listeners = graph->listeners.filter_output_port_added;
+                       break;
+               default:
+                       abort();
+               }
 
-       for (i = 0; i < graph->listeners.port_added->len; i++) {
-               struct bt_graph_listener listener =
-                       g_array_index(graph->listeners.port_added,
-                               struct bt_graph_listener, i);
-               bt_private_graph_port_added_listener func = listener.func;
+               break;
+       }
+       case BT_COMPONENT_CLASS_TYPE_SINK:
+       {
+               switch (port->type) {
+               case BT_PORT_TYPE_INPUT:
+                       listeners = graph->listeners.sink_input_port_added;
+                       break;
+               default:
+                       abort();
+               }
 
-               BT_ASSERT(func);
-               func(port, listener.data);
+               break;
+       }
+       default:
+               abort();
+       }
+
+       for (i = 0; i < listeners->len; i++) {
+               struct bt_graph_listener_port_added *listener =
+                       &g_array_index(listeners,
+                               struct bt_graph_listener_port_added, i);
+
+               BT_ASSERT(listener->func);
+               listener->func(comp, port, listener->base.data);
        }
 }
 
@@ -919,20 +1427,65 @@ BT_HIDDEN
 void bt_graph_notify_port_removed(struct bt_graph *graph,
                struct bt_component *comp, struct bt_port *port)
 {
-       size_t i;
+       uint64_t i;
+       GArray *listeners;
+
+       BT_ASSERT(graph);
+       BT_ASSERT(port);
+       BT_LIB_LOGV("Notifying graph listeners that a port was removed: "
+               "%![graph-]+g, %![comp-]+c, %![port-]+p", graph, comp, port);
+
+       switch (comp->class->type) {
+       case BT_COMPONENT_CLASS_TYPE_SOURCE:
+       {
+               switch (port->type) {
+               case BT_PORT_TYPE_OUTPUT:
+                       listeners = graph->listeners.source_output_port_removed;
+                       break;
+               default:
+                       abort();
+               }
+
+               break;
+       }
+       case BT_COMPONENT_CLASS_TYPE_FILTER:
+       {
+               switch (port->type) {
+               case BT_PORT_TYPE_INPUT:
+                       listeners = graph->listeners.filter_input_port_removed;
+                       break;
+               case BT_PORT_TYPE_OUTPUT:
+                       listeners = graph->listeners.filter_output_port_removed;
+                       break;
+               default:
+                       abort();
+               }
+
+               break;
+       }
+       case BT_COMPONENT_CLASS_TYPE_SINK:
+       {
+               switch (port->type) {
+               case BT_PORT_TYPE_INPUT:
+                       listeners = graph->listeners.sink_input_port_removed;
+                       break;
+               default:
+                       abort();
+               }
 
-       BT_LOGV("Notifying graph listeners that a port was removed: "
-               "graph-addr=%p, port-addr=%p, port-name=\"%s\"",
-               graph, port, bt_port_get_name(port));
+               break;
+       }
+       default:
+               abort();
+       }
 
-       for (i = 0; i < graph->listeners.port_removed->len; i++) {
-               struct bt_graph_listener listener =
-                       g_array_index(graph->listeners.port_removed,
-                               struct bt_graph_listener, i);
-               bt_private_graph_port_removed_listener func = listener.func;
+       for (i = 0; i < listeners->len; i++) {
+               struct bt_graph_listener_port_removed *listener =
+                       &g_array_index(listeners,
+                               struct bt_graph_listener_port_removed, i);
 
-               BT_ASSERT(func);
-               func(comp, port, listener.data);
+               BT_ASSERT(listener->func);
+               listener->func(comp, port, listener->base.data);
        }
 }
 
@@ -940,23 +1493,65 @@ BT_HIDDEN
 void bt_graph_notify_ports_connected(struct bt_graph *graph,
                struct bt_port *upstream_port, struct bt_port *downstream_port)
 {
-       size_t i;
+       uint64_t i;
+       GArray *listeners;
+       struct bt_component *upstream_comp;
+       struct bt_component *downstream_comp;
 
-       BT_LOGV("Notifying graph listeners that two ports were connected: "
-               "graph-addr=%p, "
-               "upstream-port-addr=%p, upstream-port-name=\"%s\", "
-               "downstream-port-addr=%p, downstream-port-name=\"%s\"",
-               graph, upstream_port, bt_port_get_name(upstream_port),
-               downstream_port, bt_port_get_name(downstream_port));
+       BT_ASSERT(graph);
+       BT_ASSERT(upstream_port);
+       BT_ASSERT(downstream_port);
+       BT_LIB_LOGV("Notifying graph listeners that ports were connected: "
+               "%![graph-]+g, %![up-port-]+p, %![down-port-]+p",
+               graph, upstream_port, downstream_port);
+       upstream_comp = bt_port_borrow_component(upstream_port);
+       BT_ASSERT(upstream_comp);
+       downstream_comp = bt_port_borrow_component(downstream_port);
+       BT_ASSERT(downstream_comp);
+
+       switch (upstream_comp->class->type) {
+       case BT_COMPONENT_CLASS_TYPE_SOURCE:
+       {
+               switch (downstream_comp->class->type) {
+               case BT_COMPONENT_CLASS_TYPE_FILTER:
+                       listeners =
+                               graph->listeners.source_filter_ports_connected;
+                       break;
+               case BT_COMPONENT_CLASS_TYPE_SINK:
+                       listeners =
+                               graph->listeners.source_sink_ports_connected;
+                       break;
+               default:
+                       abort();
+               }
 
-       for (i = 0; i < graph->listeners.ports_connected->len; i++) {
-               struct bt_graph_listener listener =
-                       g_array_index(graph->listeners.ports_connected,
-                               struct bt_graph_listener, i);
-               bt_private_graph_ports_connected_listener func = listener.func;
+               break;
+       }
+       case BT_COMPONENT_CLASS_TYPE_FILTER:
+       {
+               switch (downstream_comp->class->type) {
+               case BT_COMPONENT_CLASS_TYPE_SINK:
+                       listeners =
+                               graph->listeners.filter_sink_ports_connected;
+                       break;
+               default:
+                       abort();
+               }
 
-               BT_ASSERT(func);
-               func(upstream_port, downstream_port, listener.data);
+               break;
+       }
+       default:
+               abort();
+       }
+
+       for (i = 0; i < listeners->len; i++) {
+               struct bt_graph_listener_ports_connected *listener =
+                       &g_array_index(listeners,
+                               struct bt_graph_listener_ports_connected, i);
+
+               BT_ASSERT(listener->func);
+               listener->func(upstream_comp, downstream_comp,
+                       upstream_port, downstream_port, listener->base.data);
        }
 }
 
@@ -964,26 +1559,66 @@ BT_HIDDEN
 void bt_graph_notify_ports_disconnected(struct bt_graph *graph,
                struct bt_component *upstream_comp,
                struct bt_component *downstream_comp,
-               struct bt_port *upstream_port, struct bt_port *downstream_port)
+               struct bt_port *upstream_port,
+               struct bt_port *downstream_port)
 {
-       size_t i;
+       uint64_t i;
+       GArray *listeners;
+
+       BT_ASSERT(graph);
+       BT_ASSERT(upstream_comp);
+       BT_ASSERT(downstream_comp);
+       BT_ASSERT(upstream_port);
+       BT_ASSERT(downstream_port);
+       BT_LIB_LOGV("Notifying graph listeners that ports were disconnected: "
+               "%![graph-]+g, %![up-port-]+p, %![down-port-]+p, "
+               "%![up-comp-]+c, %![down-comp-]+c",
+               graph, upstream_port, downstream_port, upstream_comp,
+               downstream_comp);
+
+       switch (upstream_comp->class->type) {
+       case BT_COMPONENT_CLASS_TYPE_SOURCE:
+       {
+               switch (downstream_comp->class->type) {
+               case BT_COMPONENT_CLASS_TYPE_FILTER:
+                       listeners =
+                               graph->listeners.source_filter_ports_disconnected;
+                       break;
+               case BT_COMPONENT_CLASS_TYPE_SINK:
+                       listeners =
+                               graph->listeners.source_sink_ports_disconnected;
+                       break;
+               default:
+                       abort();
+               }
 
-       BT_LOGV("Notifying graph listeners that two ports were disconnected: "
-               "graph-addr=%p, "
-               "upstream-port-addr=%p, upstream-port-name=\"%s\", "
-               "downstream-port-addr=%p, downstream-port-name=\"%s\"",
-               graph, upstream_port, bt_port_get_name(upstream_port),
-               downstream_port, bt_port_get_name(downstream_port));
+               break;
+       }
+       case BT_COMPONENT_CLASS_TYPE_FILTER:
+       {
+               switch (downstream_comp->class->type) {
+               case BT_COMPONENT_CLASS_TYPE_SINK:
+                       listeners =
+                               graph->listeners.filter_sink_ports_disconnected;
+                       break;
+               default:
+                       abort();
+               }
+
+               break;
+       }
+       default:
+               abort();
+       }
 
-       for (i = 0; i < graph->listeners.ports_disconnected->len; i++) {
-               struct bt_graph_listener listener =
-                       g_array_index(graph->listeners.ports_disconnected,
-                               struct bt_graph_listener, i);
-               bt_private_graph_ports_disconnected_listener func = listener.func;
+       for (i = 0; i < listeners->len; i++) {
+               struct bt_graph_listener_ports_disconnected *listener =
+                       &g_array_index(listeners,
+                               struct bt_graph_listener_ports_disconnected, i);
 
-               BT_ASSERT(func);
-               func(upstream_comp, downstream_comp, upstream_port,
-                       downstream_port, listener.data);
+               BT_ASSERT(listener->func);
+               listener->func(upstream_comp, downstream_comp,
+                       upstream_port, downstream_port, listener->base.data);
        }
 }
 
@@ -991,34 +1626,17 @@ enum bt_graph_status bt_private_graph_cancel(
                struct bt_private_graph *priv_graph)
 {
        struct bt_graph *graph = (void *) priv_graph;
-       enum bt_graph_status ret = BT_GRAPH_STATUS_OK;
-
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               ret = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       graph->canceled = BT_TRUE;
-       BT_LOGV("Canceled graph: addr=%p", graph);
 
-end:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       graph->canceled = true;
+       BT_LIB_LOGV("Canceled graph: %!+i", graph);
+       return BT_GRAPH_STATUS_OK;
 }
 
 bt_bool bt_graph_is_canceled(struct bt_graph *graph)
 {
-       bt_bool canceled = BT_FALSE;
-
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               goto end;
-       }
-
-       canceled = graph->canceled;
-
-end:
-       return canceled;
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       return graph->canceled ? BT_TRUE : BT_FALSE;
 }
 
 BT_HIDDEN
@@ -1027,98 +1645,67 @@ void bt_graph_remove_connection(struct bt_graph *graph,
 {
        BT_ASSERT(graph);
        BT_ASSERT(connection);
-       BT_LOGV("Removing graph's connection: graph-addr=%p, conn-addr=%p",
+       BT_LIB_LOGV("Removing graph's connection: %![graph-]+g, %![conn-]+x",
                graph, connection);
        g_ptr_array_remove(graph->connections, connection);
 }
 
-enum bt_graph_status bt_private_graph_add_component_with_init_method_data(
+BT_ASSERT_PRE_FUNC
+static inline
+bool component_name_exists(struct bt_graph *graph, const char *name)
+{
+       bool exists = false;
+       uint64_t i;
+
+       for (i = 0; i < graph->components->len; i++) {
+               struct bt_component *other_comp = graph->components->pdata[i];
+
+               if (strcmp(name, bt_component_get_name(other_comp)) == 0) {
+                       BT_ASSERT_PRE_MSG("Another component with the same name already exists in the graph: "
+                               "%![other-comp-]+c, name=\"%s\"",
+                               other_comp, name);
+                       exists = true;
+                       goto end;
+               }
+       }
+
+end:
+       return exists;
+}
+
+static
+enum bt_graph_status add_component_with_init_method_data(
                struct bt_private_graph *priv_graph,
-               struct bt_component_class *component_class,
+               struct bt_component_class *comp_cls,
+               comp_init_method_t init_method,
                const char *name, struct bt_value *params,
-               void *init_method_data,
-               struct bt_component **user_component)
+               void *init_method_data, struct bt_component **user_component)
 {
        struct bt_graph *graph = (void *) priv_graph;
        enum bt_graph_status graph_status = BT_GRAPH_STATUS_OK;
-       enum bt_component_status comp_status;
+       enum bt_self_component_status comp_status;
        struct bt_component *component = NULL;
-       enum bt_component_class_type type;
-       size_t i;
-       bt_bool init_can_consume;
+       int ret;
+       bool init_can_consume;
 
+       BT_ASSERT(comp_cls);
+       BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+       BT_ASSERT_PRE_NON_NULL(name, "Name");
+       BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph);
+       BT_ASSERT_PRE(!component_name_exists(graph, name),
+               "Duplicate component name: %!+g, name=\"%s\"", graph, name);
+       BT_ASSERT_PRE(!params || bt_value_is_map(params),
+               "Parameter value is not a map value: %!+v", params);
        bt_object_get_ref(params);
-
-       if (!graph) {
-               BT_LOGW_STR("Invalid parameter: graph is NULL.");
-               graph_status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
        init_can_consume = graph->can_consume;
-
-       if (!component_class) {
-               BT_LOGW_STR("Invalid parameter: component class is NULL.");
-               graph_status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       graph->can_consume = BT_FALSE;
-       type = bt_component_class_get_type(component_class);
-       BT_LOGD("Adding component to graph: "
-               "graph-addr=%p, comp-cls-addr=%p, "
-               "comp-cls-type=%s, name=\"%s\", params-addr=%p, "
+       bt_graph_set_can_consume(graph, false);
+       BT_LIB_LOGD("Adding component to graph: "
+               "%![graph-]+g, %![cc-]+C, name=\"%s\", %![params-]+v, "
                "init-method-data-addr=%p",
-               graph, component_class, bt_component_class_type_string(type),
-               name, params, init_method_data);
+               graph, comp_cls, name, params, init_method_data);
 
-       if (!name) {
-               BT_LOGW_STR("Invalid parameter: name is NULL.");
-               graph_status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       if (graph->canceled) {
-               BT_LOGW_STR("Invalid parameter: graph is canceled.");
-               graph_status = BT_GRAPH_STATUS_CANCELED;
-               goto end;
-       }
-
-       if (type != BT_COMPONENT_CLASS_TYPE_SOURCE &&
-                       type != BT_COMPONENT_CLASS_TYPE_FILTER &&
-                       type != BT_COMPONENT_CLASS_TYPE_SINK) {
-               BT_LOGW("Invalid parameter: unknown component class type: "
-                       "type=%d", type);
-               graph_status = BT_GRAPH_STATUS_INVALID;
-               goto end;
-       }
-
-       for (i = 0; i < graph->components->len; i++) {
-               void *other_comp = graph->components->pdata[i];
-
-               if (strcmp(name, bt_component_get_name(other_comp)) == 0) {
-                       BT_LOGW("Invalid parameter: another component with the same name already exists in the graph: "
-                               "other-comp-addr=%p, name=\"%s\"",
-                               other_comp, name);
-                       graph_status = BT_GRAPH_STATUS_INVALID;
-                       goto end;
-               }
-       }
-
-       /*
-        * Parameters must be a map value, but we create a convenient
-        * empty one if it's NULL.
-        */
-       if (params) {
-               if (!bt_value_is_map(params)) {
-                       BT_LOGW("Invalid parameter: initialization parameters must be a map value: "
-                               "type=%s",
-                               bt_common_value_type_string(
-                                       bt_value_get_type(params)));
-                       graph_status = BT_GRAPH_STATUS_INVALID;
-                       goto end;
-               }
-       } else {
-               params = bt_value_borrow_from_private(
+       if (!params) {
+               params = bt_private_value_borrow_value(
                        bt_private_value_map_create());
                if (!params) {
                        BT_LOGE_STR("Cannot create map value object.");
@@ -1127,12 +1714,11 @@ enum bt_graph_status bt_private_graph_add_component_with_init_method_data(
                }
        }
 
-       comp_status = bt_component_create(component_class, name, &component);
-       if (comp_status != BT_COMPONENT_STATUS_OK) {
-               BT_LOGE("Cannot create empty component object: status=%s",
-                       bt_component_status_string(comp_status));
-               graph_status = bt_graph_status_from_component_status(
-                       comp_status);
+       ret = bt_component_create(comp_cls, name, &component);
+       if (ret) {
+               BT_LOGE("Cannot create empty component object: ret=%d",
+                       ret);
+               graph_status = BT_GRAPH_STATUS_NOMEM;
                goto end;
        }
 
@@ -1144,17 +1730,14 @@ enum bt_graph_status bt_private_graph_add_component_with_init_method_data(
        g_ptr_array_add(graph->components, component);
        bt_component_set_graph(component, graph);
 
-       if (component_class->methods.init) {
+       if (init_method) {
                BT_LOGD_STR("Calling user's initialization method.");
-               comp_status = component_class->methods.init(
-                       bt_private_component_from_component(component), params,
-                       init_method_data);
+               comp_status = init_method(component, params, init_method_data);
                BT_LOGD("User method returned: status=%s",
-                       bt_component_status_string(comp_status));
-               if (comp_status != BT_COMPONENT_STATUS_OK) {
+                       bt_self_component_status_string(comp_status));
+               if (comp_status != BT_SELF_COMPONENT_STATUS_OK) {
                        BT_LOGW_STR("Initialization method failed.");
-                       graph_status = bt_graph_status_from_component_status(
-                               comp_status);
+                       graph_status = (int) comp_status;
                        bt_component_set_graph(component, NULL);
                        g_ptr_array_remove_fast(graph->components, component);
                        goto end;
@@ -1172,7 +1755,7 @@ enum bt_graph_status bt_private_graph_add_component_with_init_method_data(
         * sink queue to be consumed by bt_graph_consume().
         */
        if (bt_component_is_sink(component)) {
-               graph->has_sink = BT_TRUE;
+               graph->has_sink = true;
                g_queue_push_tail(graph->sinks_to_consume, component);
        }
 
@@ -1181,13 +1764,11 @@ enum bt_graph_status bt_private_graph_add_component_with_init_method_data(
         * least once.
         */
        BT_LOGD_STR("Freezing component class.");
-       bt_component_class_freeze(component->class);
-       BT_LOGD("Added component to graph: "
-               "graph-addr=%p, comp-cls-addr=%p, "
-               "comp-cls-type=%s, name=\"%s\", params-addr=%p, "
-               "init-method-data-addr=%p, comp-addr=%p",
-               graph, component_class, bt_component_class_type_string(type),
-               name, params, init_method_data, component);
+       bt_component_class_freeze(comp_cls);
+       BT_LIB_LOGD("Added component to graph: "
+               "%![graph-]+g, %![cc-]+C, name=\"%s\", %![params-]+v, "
+               "init-method-data-addr=%p, %![comp-]+c",
+               graph, comp_cls, name, params, init_method_data, component);
 
        if (user_component) {
                /* Move reference to user */
@@ -1198,28 +1779,86 @@ enum bt_graph_status bt_private_graph_add_component_with_init_method_data(
 end:
        bt_object_put_ref(component);
        bt_object_put_ref(params);
-       if (graph) {
-               graph->can_consume = init_can_consume;
-       }
+       (void) init_can_consume;
+       bt_graph_set_can_consume(graph, init_can_consume);
        return graph_status;
 }
 
-enum bt_graph_status bt_private_graph_add_component(
+enum bt_graph_status
+bt_private_graph_add_source_component_with_init_method_data(
+               struct bt_private_graph *graph,
+               struct bt_component_class_source *comp_cls,
+               const char *name, struct bt_value *params,
+               void *init_method_data, struct bt_component_source **component)
+{
+       BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class");
+       return add_component_with_init_method_data(graph,
+               (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init,
+               name, params, init_method_data, (void *) component);
+}
+
+enum bt_graph_status bt_private_graph_add_source_component(
+               struct bt_private_graph *graph,
+               struct bt_component_class_source *comp_cls,
+               const char *name, struct bt_value *params,
+               struct bt_component_source **component)
+{
+       return bt_private_graph_add_source_component_with_init_method_data(
+               graph, comp_cls, name, params, NULL, component);
+}
+
+enum bt_graph_status
+bt_private_graph_add_filter_component_with_init_method_data(
+               struct bt_private_graph *graph,
+               struct bt_component_class_filter *comp_cls,
+               const char *name, struct bt_value *params,
+               void *init_method_data, struct bt_component_filter **component)
+{
+       BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class");
+       return add_component_with_init_method_data(graph,
+               (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init,
+               name, params, init_method_data, (void *) component);
+}
+
+enum bt_graph_status bt_private_graph_add_filter_component(
+               struct bt_private_graph *graph,
+               struct bt_component_class_filter *comp_cls,
+               const char *name, struct bt_value *params,
+               struct bt_component_filter **component)
+{
+       return bt_private_graph_add_filter_component_with_init_method_data(
+               graph, comp_cls, name, params, NULL, component);
+}
+
+enum bt_graph_status
+bt_private_graph_add_sink_component_with_init_method_data(
                struct bt_private_graph *graph,
-               struct bt_component_class *component_class,
+               struct bt_component_class_sink *comp_cls,
                const char *name, struct bt_value *params,
-               struct bt_component **component)
+               void *init_method_data, struct bt_component_sink **component)
 {
-       return bt_private_graph_add_component_with_init_method_data(graph,
-               component_class, name, params, NULL, component);
+       BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class");
+       return add_component_with_init_method_data(graph,
+               (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init,
+               name, params, init_method_data, (void *) component);
+}
+
+enum bt_graph_status bt_private_graph_add_sink_component(
+               struct bt_private_graph *graph,
+               struct bt_component_class_sink *comp_cls,
+               const char *name, struct bt_value *params,
+               struct bt_component_sink **component)
+{
+       return bt_private_graph_add_sink_component_with_init_method_data(
+               graph, comp_cls, name, params, NULL, component);
 }
 
 BT_HIDDEN
 int bt_graph_remove_unconnected_component(struct bt_graph *graph,
                struct bt_component *component)
 {
-       bt_bool init_can_consume;
-       int64_t count;
+       bool init_can_consume;
+       uint64_t count;
        uint64_t i;
        int ret = 0;
 
@@ -1232,21 +1871,16 @@ int bt_graph_remove_unconnected_component(struct bt_graph *graph,
        count = bt_component_get_input_port_count(component);
 
        for (i = 0; i < count; i++) {
-               struct bt_port *port =
-                       bt_component_get_input_port_by_index(component, i);
+               struct bt_port *port = (void *)
+                       bt_component_borrow_input_port_by_index(component, i);
 
                BT_ASSERT(port);
-               bt_object_put_ref(port);
 
                if (bt_port_is_connected(port)) {
-                       BT_LOGW("Cannot remove component from graph: "
+                       BT_LIB_LOGW("Cannot remove component from graph: "
                                "an input port is connected: "
-                               "graph-addr=%p, comp-addr=%p, "
-                               "comp-name=\"%s\", connected-port-addr=%p, "
-                               "connected-port-name=\"%s\"",
-                               graph, component,
-                               bt_component_get_name(component),
-                               port, bt_port_get_name(port));
+                               "%![graph-]+g, %![comp-]+c, %![port-]+p",
+                               graph, component, port);
                        goto error;
                }
        }
@@ -1254,32 +1888,27 @@ int bt_graph_remove_unconnected_component(struct bt_graph *graph,
        count = bt_component_get_output_port_count(component);
 
        for (i = 0; i < count; i++) {
-               struct bt_port *port =
-                       bt_component_get_output_port_by_index(component, i);
+               struct bt_port *port = (void *)
+                       bt_component_borrow_output_port_by_index(component, i);
 
                BT_ASSERT(port);
-               bt_object_put_ref(port);
 
                if (bt_port_is_connected(port)) {
-                       BT_LOGW("Cannot remove component from graph: "
+                       BT_LIB_LOGW("Cannot remove component from graph: "
                                "an output port is connected: "
-                               "graph-addr=%p, comp-addr=%p, "
-                               "comp-name=\"%s\", connected-port-addr=%p, "
-                               "connected-port-name=\"%s\"",
-                               graph, component,
-                               bt_component_get_name(component),
-                               port, bt_port_get_name(port));
+                               "%![graph-]+g, %![comp-]+c, %![port-]+p",
+                               graph, component, port);
                        goto error;
                }
        }
 
-       graph->can_consume = BT_FALSE;
+       bt_graph_set_can_consume(graph, false);
 
        /* Possibly remove from sinks to consume */
        (void) g_queue_remove(graph->sinks_to_consume, component);
 
        if (graph->sinks_to_consume->length == 0) {
-               graph->has_sink = BT_FALSE;
+               graph->has_sink = false;
        }
 
        /*
@@ -1294,7 +1923,8 @@ error:
        ret = -1;
 
 end:
-       graph->can_consume = init_can_consume;
+       (void) init_can_consume;
+       bt_graph_set_can_consume(graph, init_can_consume);
        return ret;
 }
 
@@ -1315,9 +1945,3 @@ void bt_graph_add_notification(struct bt_graph *graph,
         */
        g_ptr_array_add(graph->notifications, notif);
 }
-
-struct bt_graph *bt_graph_borrow_from_private(
-               struct bt_private_graph *priv_graph)
-{
-       return (void *) priv_graph;
-}
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